Global ranking of Top 500 influencers and players active on Twitter in Building Services – those who are involved with services and facilities, RACHP, ventilation, heating, plumbing and pipework. Players listed on the leaderboard range from contractors, sub-contractors and specialist contractors, via government and campaigning organisations, to market-leading engineers; from those concerned with policy and best practice, business strategies and design solutions; to innovators in technology and materials. Weekly update day: Wednesday.

Curated and Managed by Jim McClelland @SustMeme, the data is published by McClelland Media Ltd, in association with the BESA @BESAGroup. The Building Engineering Services Association (BESA) has evolved throughout the years to reflect the growing needs of its members, encompassing the specialist services available within the built environment. BESA has a proud heritage and has been most notably known as the Heating and Ventilating Contractors’ Association (HVCA) for nearly 50 years. BESA offers specialist services and advice, training and sector-specific apprenticeships – all tailored to support its entire membership, ranging from micro enterprises to the largest organisations within the industry.

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The Top 500 ranks Players on the basis of scores that measure interactions and influence across social media, with the metrics provided predominantly via leading independent platform Kred, plus an additional custom element.

To nominate a person or organisation for potential inclusion on this ranking, please simply Tweet the Twitter Username of the nominee to @SustMemeTop500, using the hashtag #Top500ADDBuildingServices.

To view other sectors for which SustMeme rankings are published please return to the main Top 500 menu. For all news of Top 500 releases, updates and peer group notifications, please Follow dedicated Twitter feed: @SustMemeTop500.

To access and learn more about the full range of Top 500 Player options, please see the SustMeme User Guide, plus visit the Building Services Top 500 host platform direct.

SustMeme Building Services

5:00am, 27th May 2020
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Rank	Player	Index
1. (1)	Schneider Electric With EcoStruxure™, we provide energy and automation digital solutions for efficiency and sustainability.	959
2. (2)	IET The Institution of Engineering and Technology (IET) is a diverse home for engineering and technology across the world.	953
3. (3)	Atkins Official account of Atkins, member of @SNCLavalin, one of the world’s most respected design, engineering and project management consultancies.	906
4. (4)	PHPI Magazine The UK’s biggest heating & plumbing magazine brand. RT/like = bkmrk. Home of #InstallOfFame. Sign up for digital copies at https://t.co/Ca30YHklyN	898
5. (5)	Vaillant UK Vaillant is one of Europe's largest heating technology manufacturers. We monitor this page during office hours. For customer service, please call 0330 100 3150	892
6. (6)	Janet T Beckett Chartered Engineer, HVAC & Low Carbon building designer, I work in construction. Democratic Socialist.	884
7. (7)	SiemensUSA Unlocking the potential of digital transformation to positively impact society. #SiemensUSA	880
8. (10)	Installer Magazine Installer is essential reading for heating, plumbing and renewable professionals.	875
9. (8)	Arup We're a firm of designers, planners, engineers, architects, consultants and technical specialists shaping a better world.	873
10. (9)	AECOM We are the world’s premier infrastructure firm, taking on the most complex challenges and pioneering solutions that push the limits of what’s possible.	869
11. (11)	Honeywell At #Honeywell, we're transforming the way the world works. #futureshaper	867
12. (12)	The IMechE Team We are the Institution of Mechanical Engineers (IMechE). We are raising the profile of mechanical engineering.	861
13. (14)	Nathan James Van Gambling BA Hon. Heating Plumbing Energy Lecturer @lowcarbonhomes & int.speaker Hosts @betateachpod renewables podcast. Training consultant. @A_L_T member #solarheat #andragogy	857
14. (13)	CIBSE Chartered Institution of Building Services Engineers: dedicated to improving building performance through engineering excellence.	851
15. (15)	Electrical Safety First We're Electrical Safety First (formerly Electrical Safety Council), a UK charity aiming to reduce the number of deaths & injuries caused by electrical accidents	847
16. (18)	Mitie The UK’s leading Facilities Management business delivering the exceptional, every day: #BackToBusiness - Social media team here 8.30am - 5:30pm, Mon-Fri.	842
17. (16)	IWFM The Institute of Workplace and Facilities Management (IWFM) is the professional body for workplace and facilities practitioners.	840
18. (19)	Daikin India Daikin India is one of the leading manufacturers of air-conditioners in the commercial and residential segment today. You can talk to us here. 🙂	839
19. (17)	Passivhaus Trust Leading the way in the UK for adoption of the #Passivhaus standard. UK affiliate of @the_iPHA.	838
20. (20)	Saint-Gobain We design, manufacture and distribute materials and solutions which are key ingredients in the #wellbeing of each of us and the future of all.	835
21. (21)	Baxi High efficiency boilers manufactured in UK with national aftersales from Baxi Customer Support & Baxi Genuine Parts Tel 0330 678 0917 Mon-Fri 8-6 Sat 8.30-2	832
22. (23)	Mitsubishi Electric Experience total home comfort while conserving energy and filtering allergens — all at the touch of a button. #MakeYourselfComfortable #smartHVAC	828
23. (26)	Arcadis UK Arcadis is the leading global natural and built asset design and consultancy firm. LinkedIn: Arcadis United Kingdom	825
24. (25)	Facilitate Magazine Magazine of the Institute of Workplace and Facilities Management @IWFM_UK | Winner, Best Magazine, 2019 Association Excellence Awards | For jobs see @IWFM_Jobs	825
25. (29)	Saint-Gobain Designs, manufactures + distributes materials + solutions which are key ingredients in the wellbeing of each of us and the future of all. Improving Daily Lives.	824
26. (31)	IFMA Facility managers improve business and our lives. We help them make it possible.	824
27. (27)	WSP WSP is one of the world’s leading professional services firms. L'une des plus importantes sociétés de services professionnels du monde.	824
28. (30)	AHR Expo Updates from the world's largest event for HVACR professionals. AHR Expo will head to Chicago in 2021! Save the dates January 25-27. #AHRexpo #HVACR #HVAC	824
29. (22)	Buro Happold We're a world-class global practice of engineers, consultants & advisers - a community of experts creating transformative outcomes for clients & communities.	823
30. (33)	Electronic Specifier Electronic Specifier features the latest product & industry news, helping those in the electronics industry make informed choices.	823
31. (24)	WSP In The UK We are WSP UK, a leading engineering professional services consulting firm. We provide news and updates about all things WSP #WeAreWSP	823
32. (28)	Official NICEIC News, views and information from NICEIC, the UK's leading registration body for the electrical contracting industry. Always choose an NICEIC contractor.	823
33. (34)	Pro Electrician The magazine for the electrical trade. News, tech updates, product reviews, competitions. Available for free at electrical wholesale trade counters nationwide.	822
34. (32)	ECA ECA is the UK’s leading trade association for electrotechnical and engineering services organisations. You can also follow our industry magazine @ECATodayonline	821
35. (35)	Passive House Plus Award-winning green building mag. Focus: evidence-based approaches for buildings to mitigate/adapt to climate change. IRL & UK editions	821
36. (36)	Mott MacDonald Group Opening opportunities with connected thinking | Follow our staff and find out about career opportunities @MottMacLife | For early careers follow @MottMacFuture.	820
37. (38)	BDP BDP is a major international, interdisciplinary practice of architects, designers, engineers and urbanists.	819
38. (41)	Johnson Controls 105,000 experts globally, dedicated to protecting the environment in a 150 countries & 130 years of innovation, we are the power behind our customers’ mission.	819
39. (39)	The NEWS Follow for breaking news, products, articles, and HVACR events. Polls, surveys, community discussion, and open forums are integral parts of our Twitter feed.	819
40. (40)	Leviton Leading manufacturer of electrical wiring devices, lighting controls, network solutions, electric vehicle supply equipment & automation. Join us @LevitonCareers	818
41. (44)	Facilties Show Facilities Show is the world's largest FM event, supported by IWFM. #FAC2020 #FacMan	818
42. (42)	Wolseley UK A handy source of news and views for the trade. This page is monitored 9:00 - 17:30 (Monday - Friday).	818
43. (45)	Rob Berridge EngTech Heating Design/Consultancy, Est:1984. We don’t have an energy crisis, we have a wastage crisis! Own views but always up for debate. #BeaPro RT not endorsement.	817
44. (43)	Lux Magazine Your independent guide to lighting.	817
45. (47)	Energyinstitute Bringing together expertise for urgent global challenges. President @SteveJHolliday, CEO @KinghamEI Home of @EIToolbox @SafetyOnTweets @gplusglobalofw @_PfWomen	817
46. (48)	HVP Magazine The leading magazine for the heating, ventilating, and plumbing industry. Likes and retweets are not an endorsement. Contact us at hvp@mail.hgluk.net.	817
47. (46)	FMJ FMJ is the leading resource for the FM sector, providing industry-specific intelligence for the public and private sectors. #facman See jobs at @fmjobfinder	815
48. (37)	WELLcertified At IWBI we believe that buildings should be developed with people's health and wellness at the center of design. #WELLBuildingStandard #weareWELL	814
49. (49)	BUILD UP The European portal for #energyefficiency in #buildings. #EPBD An initiative of the @EU_Commission. Disclaimer: https://t.co/35sqxDmJvq	813
50. (54)	TheCIPHE The professional and voluntary regulatory body for the plumbing and heating engineering industry.	810
51. (52)	Danfoss Group We are engineering solutions that allows the world to use resources in smarter ways & driving the #SustainableTransformation of tomorrow.	809
52. (55)	Siemens Buildings Follow us @SiemensInfra to find out how we're enhancing the way we live & work by intelligently connecting energy systems, buildings & industries.	808
53. (51)	Lutron Electronics Lutron Electronics is a leading manufacturer of energy-saving light, shade, and temperature controls for new and existing homes and offices.	808
54. (56)	ASHRAEnews Shaping Tomorrow's Built Environment Today	807
55. (50)	UK BIM Alliance Here to help Industry support/take the first fundamental step in the journey to digital transformation ensuring BIM becomes business as usual.	806
56. (57)	Kirsty Hammond Specifier Review – The building product news resource for specifiers. Architecture, design & innovation, news & views from the built environment.	806
57. (58)	Installer2019	806
58. (59)	Carrier HVAC A world leader in residential and commercial high-tech heating, air-conditioning & ventilation solutions. Part of @Carrier.	805
59. (53)	Simon Owen Built environment recruiter & #cycling obsessive. Taking a break from Twitter. May send odd tweet, not logging in often.	804
60. (64)	Knauf Insulation UK Knauf Insulation is the UK’s leading insulation manufacturer creating energy efficient systems for buildings.	803
61. (65)	Nick Grant Passivhaus Consultant excited by Sustainable building design. Technical Director of UK Passivhaus Trust but views are mine or stolen.	803
62. (60)	Stephen Gill Changing lives through engineering @Worldrefday Secretariat #coolingforall #solarcooling #CircularEconomy #mentor #WREFD20 #STEM #neurodiversity #MenAsAllies	803
63. (63)	Geberit For up to date news on Geberit products, innovations and real installations from installers.	803
64. (66)	Hipmagazine	803
65. (61)	SOM We are a collective of architects, designers, engineers, and planners building a better future.	802
66. (62)	VoltimumUK Voltimum is the Electrical Industry's number one web portal. Here you will find the latest in products, news, technical articles and electrical training.	801
67. (68)	Ecological Building At the forefront of airtight and windtight building products and natural insulations for over a decade.	798
68. (72)	EnviroVent UK’s leading #manufacturer & supplier of energy efficient & sustainable #ventilation products.	798
69. (67)	WYG Group At WYG, we design, develop, and deliver interdisciplinary projects from technical solutions to complex challenges	798
70. (73)	HPM Magazine Heating & Plumbing Monthly is a must-read magazine in the #heating and #plumbing sector. http://t.co/8a0iQ8eozk	798
71. (75)	Legrand Products and systems for electrical installations and information networks. Solutions for residential, commercial & industrial buildings. 1-877-295-3472.	797
72. (74)	PHAM News The technical magazine for plumbing, heating and air movement in the UK	797
73. (77)	Building Operating Management Leading magazine for #buildingowners, #facilitymanagers, and #cre executives in commercial, institutional and healthcare facilities.	797
74. (71)	ARCADIS Design & Consultancy for natural and built assets. #Improvingqualityoflife	797
75. (70)	EmersonComRes Comfortable, controllable indoor environments. Fresh, safe food throughout the cold chain. Energy-efficient technology to build sustainable infrastructures.	797
76. (76)	PHEX A free to attend exhibition for the plumbing and heating community, offering insight into the latest tools, products and technology. Follow our insta: @phexshow	794
77. (69)	BESA BESA - The Building Engineering Services Association is the UK's leading trade organisation for building engineering services contractors.	793
78. (80)	AECB Association for Environment Conscious Building ◦ We work with our members to inspire, develop and share sustainable building practice ◦ https://t.co/QMkVMdgy00	793
79. (82)	Green Building Store Products and support for Passivhaus and low energy buildings. Working together with @Enhabitfeed for a whole house solution.	792
80. (84)	Mitsubishi Electric Mitsubishi Electric, Living Environment Systems. Energy efficient heating, cooling & ventilation solutions. Retweets not an endorsement.	792
81. (79)	Cundall Cundall are multidisciplinary consulting engineers who operate in the UK, Ireland, Australia, Asia, MENA and Europe.	791
82. (78)	Siemens India From Turbines to Trains, Power Plants to Automation Controls, Energy-efficient Motors to Building Smart Cities. More: https://t.co/543xQOBga9 Call:1800 209 1800	791
83. (81)	LIGHTFAIR Trade show. Conference. Networking. Let's talk lighting. See you in New York for LightFair 2021.	789
84. (83)	Graham Merchant Putting the #CustomerF1rst and keeping you up to date with local & industry news and offers from our range of plumbing, heating, bathroom and renewable products	788
85. (86)	Carrier We’ve forged entire industries, built iconic brands & pioneered over 100 years of firsts. This is the new Carrier.	786
86. (85)	Daikin España Perfil corporativo oficial de Daikin España para escuchar, conversar y compartir novedades de la compañía, climatización eficiente y calidad del aire	786
87. (92)	VENT-AXIA Vent-Axia continues to lead the way in improving the indoor environment by supplying air management solutions in the UK and around the world.	784
88. (88)	David Frise CEO BESA does M&E in built environment Long suffering Spurs fan. Oh & occasional stand up comedy. Views my own	784
89. (87)	ROCKWOOL We are committed to enriching the lives of everyone who comes into contact with our solutions. Tweets from ROCKWOOL UK Marketing Team. https://t.co/uCVfuo1Q7F	781
90. (91)	APHC APHC is the leading plumbing and heating trade association. We represent the interests of our members and provide them with technical and commercial support.	781
91. (115)	Heat-Engineer.Com Built By Engineers For Engineers, this is the worlds first truly professional heat loss calculation software and much, much more. Massive updates coming soon!!	780
92. (94)	Rinnai UK World's Largest manufacturer of gas appliances, including high efficiency multi purpose water heaters and heating systems	778
93. (90)	Sparks Magazine⚡️ ⚡️ The only magazine for electrical students and apprentices ☀️ Read the Summer issue on our website for free now!	778
94. (93)	Stewart Gilmour CA. FD/CFO. Architecture, R2R, Sustainabilty, Passivhaus, PropTech, Women's Health and HealthTech. MAMIOC. Views my own.	777
95. (96)	Philippe Moseley Work at @EU_Commission #EASME on #H2020 #energyefficiency and #renewables in #buildings and urban areas.	777
96. (89)	Tomorrow's FM Tomorrow's FM is your online Facilities Management magazine. Email: ryan@opusbm.co.uk Editor: @Ryanthll	777
97. (101)	P&FM Magazine PFM is the leading independent voice of the UK facilities management industry	777
98. (100)	ACCA The Air Conditioning Contractors of America is the national association representing the nation's best heating, air conditioning, and refrigeration contractors.	777
99. (98)	Int'l PH Assoc The global network of Passive House professionals and enthusiasts working to promote the Passive House Standard https://t.co/3Xtjz4YbMU	777
100. (102)	Dru Crawley #buildings: #tech, #performance, #netzeroenergy, #simulation, #BIM, #climatechange, #data, PhD, father of #EnergyPlus, Bentley Systems, views own	776
101. (97)	Grant UK Leading heating manufacturer supplying award winning condensing oil boilers, renewables, cylinders, heat emitters & controls. Business partner of @BathRugby	776
102. (110)	Thomas Nowak Secretary general of EHPA, convinced supporter of green & energy efficient energy. 100% is possible. HP in the basement: working very well! tweets = own opinion	776
103. (106)	Daikin UK Daikin UK offer the widest range of high quality heat pump, air conditioning, ventilation, refrigeration and applied system solutions available on the market.	774
104. (99)	Kingspan Insulation #Kingspan #Insulation. Market leading manufacturer of insulation products & systems including Kingspan GreenGuard, OPTIM-R, Kooltherm, Therma & TEK.	774
105. (103)	NESEA.org Advancing #sustainable #building & #energy practices in the Northeast's built environment by connecting professionals to ideas, opportunities, and each other.	773
106. (104)	SLL The SLL welcomes all those who are interested in any aspect of the world of light, lighting, and its applications.	773
107. (108)	Ramboll UK Ramboll provides multidisciplinary solutions that serve businesses, governments and communities around the world.	773
108. (109)	Arcadis North America News and views from the North American region of the leading design and consultancy firm for natural and built assets. #Arcadis	772
109. (107)	Max Fordham LLP We create Beautiful Engineering. We engineer air, light, sound and energy to bring buildings to life. Including tweets from our #acoustics team	772
110. (95)	CIBSEJournal Magazine of the Chartered Institution of Building Services Engineers	772
111. (105)	Sentinel Global water treatment experts for 30+ years; helping you clean, protect & maintain heating and hot water systems	771
112. (112)	Pegler Yorkshire UK manufacturer of commercial & residential plumbing & heating products. Our social media team tweet about energy saving products & industry-related news	770
113. (113)	UponorUK Uponor offers innovative plumbing and heating system solutions for all building types, available from your local merchant.	770
114. (111)	New Buildings Inst. A driving force for better energy performance in buildings...NBI assesses technologies, promotes design approaches, and helps guide policies and programs	770
115. (114)	Alpha Innovation Domestic and commercial gas boilers. We monitor this page during office hours Monday to Friday. For customer service, please call 0344 871 8760.	769
116. (121)	Worcester Bosch Head to @WorcsBoschCare for homeowner support	767
117. (116)	NG Bailey NG Bailey is the UK’s leading independent engineering and services business with a deserved reputation for excellence. Passion | Integrity | Excellence	766
118. (118)	Hoare Lea Engineers of human experiences.	766
119. (122)	Click Scolmore Scolmore - Wiring accessories manufacturer ⚡	766
120. (119)	YORK HVAC The official Twitter account for YORK HVAC. Follow us to stay up to date with the latest news.	765
121. (117)	Danfoss Cool We keep people, products and the planet cool. Food Retail, Air Conditioning, Industrial & Commercial Refrigeration #HVACR #Turbocor #Cooling #CoolApps	764
122. (128)	Stroma Building sustainability & compliance! Certification, training, software & consultancy services – for a compliant, more energy-efficient built environment.	763
123. (127)	Taco Comfort Welcome to Taco, a third generation, family owned American manufacturer of the highest quality comfort solutions for residential and commercial applications.	762
124. (120)	BBP Collaboration of the UK's leading commercial property owners who are working together to improve the sustainability of existing commercial building stock.	762
125. (124)	World Plumbing Day Celebrate the important role plumbing plays in the health and safety of modern society - every year on March 11th. #WorldPlumbingDay	762
126. (123)	Energist UK Your independent specialist for planning, sustainability and building regs. The latest industry news and activity from the team at Energist.	761
127. (126)	Plumbing&Mechanical Follow PM for all the latest breaking news, products, articles, and events in the plumbing, mechanical and hydronic heating industries.	761
128. (131)	FMJ @IFMA's official magazine written by & for FM professionals who develop & maintain productive workplaces to shape the future of the built environment. Est. 1988	760
129. (129)	Danfoss Drives Our portfolio of high-quality, application-optimized AC drives maximizes process performance, saves the most energy and minimizes emissions.	760
130. (125)	Parity Projects Award winning experts in home #energyefficiency and #retrofit. Services across the UK for #socialhousing #privatelandlords and #localauthorities.	760
131. (134)	OpenSensors.io OpenSensors aggregates data from a variety of sensors for the next generation of smart Building Management Systems.	759
132. (135)	AEE The Association of Energy Engineers is a nonprofit professional energy engineering society of 18,000 members.	759
133. (130)	HPAC Engineering Content provider for those who design, specify, operate, and maintain mechanical and building-automation systems in non-residential buildings.	759
134. (132)	OFTEC OFTEC represents the oil heating industry in the UK and Ireland and manages a competent person registration scheme for off-gas-grid heating technicians.	759
135. (133)	Setpoint Systems #SystemsIntegrator #BuildingControlSystems #BuildingAutomation #FacilitiesManagement #UL508A #EnergyEfficiency #IoT #CollaborativeSolutionsUnmatchedTraining	757
136. (140)	ACR Journal Essential information for air conditioning and refrigeration professionals. Subscribe FREE online to the magazine or weekly newsletter.	756
137. (143)	Andy SNIPEF membership officer. SNIPEF is the leading trade association for plumbing and heating businesses based in Scotland and Northern Ireland	756
138. (136)	Chapman Ventilation We do restaurant ventilation. And we do it well.	755
139. (149)	Airflow Developments Airflow Developments Ltd. is globally recognized as long established ventilation specialists who move air efficiently, quietly and with the utmost reliability.	755
140. (144)	EHPA The European Heat Pump Association (EHPA) promotes awareness and deployment of #HeatPump technologies in Europe. Join the #HeatPump Community!	755
141. (138)	SELECT Updates Scotland's largest trade association, serving the electrical industry since 1900 | Our main account with regular news updates | Helping with COVID-19 advice	754
142. (137)	Kingspan Panels, UK Welcome to Kingspan Insulated Panels, UK. We’re dedicated to maximising construction efficiency and delivering superior lifetime performance and fire protection	754
143. (139)	Paul Reeve CSR Director at ECA - the UK’s leading engineering services body. Advocating clean energy, sustainability, CSR, safety. RTs may≠agreement. Fellow RSC/IOSH/IEMA	753
144. (147)	RAC Magazine Refrigeration & Air Conditioning. Informing & prompting debate since 1898! We run the Cooling Awards (@coolingawards) F-Gas Question Time etc. Tweets by Ed team	753
145. (145)	Bosch Security EMEA Supplier of security, safety, communications products/systems & solutions for building security/automation & energy efficiency. Imprint https://t.co/dbSpjxyDUH	752
146. (142)	RDH Building Science We have a passion for Building Science. Specializing in Building Enclosure Consulting, Construction Project Management, Research, Energy and Forensics.	750
147. (141)	SES Engineering The UK’s leading design-led Mechanical & Electrical (M&E) provider, specialising in the design & installation of building services & infrastructure solutions	748
148. (146)	H&V News Voice of HVAC for 60+ years! We run the H&V News Awards. Register for mags/newsletters at https://t.co/PtHV4lreNH.Join our 9000-member LinkedIn Group. Tweets from Ed team	748
149. (150)	SNIPEF Scotland and Northern Ireland's Trade Association for the Plumbing and Heating Industry	746
150. (151)	BoschSecuritySystems Supplier of security, safety, communications products/systems & solutions for building security/automation & energy efficiency. Imprint https://t.co/J4kYrtVgF4	746
151. (152)	Johnson Controls Sharing company and industry news from Johnson Controls' Building Technologies & Solutions. The global leader in building technology and services	745
152. (155)	Kensa Heat Pumps The UK's only manufacturer and number one supplier of ground source heat pumps. For large installations visit Kensa Contracting: @KensaContracts	744
153. (153)	Uponor North America Uponor offers sustainable systems for homes and commercial buildings. PEX plumbing, radiant heating/cooling, home fire sprinklers, hydronic piping.	744
154. (157)	CALMAC Use energy more wisely with Thermal Battery cooling featuring Ice Bank #energystorage, for a more sustainable future. Over 1 GW in 60 countries.	743
155. (148)	Toby Cambray M&E and Building Physics Consultant Engineer, specialising in low energy and sustainable design. Tweets on that and whatever else pops into my head	743
156. (154)	IAPMO Founded in 1926 #IAPMO is a world-wide nonprofit association focusing comprehensive capabilities on the technical aspects of #plumbing & #mechanical regulations	741
157. (160)	CORGI Technical We are dedicated experts committed to gas safety. With nearly 50 years experience providing professional services in industry, offering support and expertise	741
158. (161)	Memoori Smart Building Research & Thought Leadership.	741
159. (162)	Cullinan Studio Cullinan Studio is a cooperative architectural and masterplanning practice engaging with organisations and communities to connect people to nature.	740
160. (164)	CIPH News Canadian Institute of Plumbing & Heating (CIPH) - the association for plumbing, heating, hydronics, industrial, waterworks and other mechanical products.	739
161. (156)	World Refrigeration Day #WorldRefrigerationDay is a global awareness raising campaign of the role of #airconditioning, #refrigeration, #heatpumps #WREFD20 #ColdChain4Life	738
162. (159)	Waterman Waterman is a multidisciplinary consultancy providing sustainable solutions to the property, infrastructure, energy and environmental markets.	737
163. (158)	SimonMcGuinness If you build a house, make sure its a certified Passive House.	737
164. (163)	Trimble MEP Trimble MEP consists of global employees providing software solutions to #electrical, #mechanical & #plumbing professionals. Part of the @TrimbleBuilding group.	737
165. (167)	CE CE is the distributor and wholesaler of leading HVAC/R brands: Carrier, Bryant, Payne, Gree and TopTech. Customer service and HVAC/R expertise is our focus.	735
166. (172)	BSRIA BSRIA's engineering, technical and market research experts provide independent and practical help in design, construction and occupancy of the built environment	735
167. (166)	NVent Nuheat nVent NuHeat is the leading brand for premium electric floor #heating in North America.	735
168. (176)	HVROnlineEditor Interesting and quirky HVAC story tweets and retweets and our daily news feed.	734
169. (170)	Mitton Group Mitton is the name behind 1 of the UK’s leading building services groups providing professional & comprehensive mechanical building service solutions nationwide	732
170. (165)	Testo UK Test and Measurement experts. Manufacture & Calibrate instruments for HVAC, Refrigeration, Catering, Food Processing & Climate Monitoring	732
171. (168)	IOR The Institute of Refrigeration, the UK hub for information on refrigeration, air conditioning and heat pump advancement	732
172. (169)	Claire Das Bhaumik Building Physicist. Partner at Inkling LLP. Using physics to make buildings more comfortable and energy efficient #BuildingPhysics	732
173. (189)	Timo Ruohomäki Director, IoT and Data at Forum Virium, the innovation company of City of Helsinki. #smartcity #urbanplatform #kafka #geospatial #CityGML #energy #BEMS #BAS	732
174. (185)	Altecnic Manufacturing accredited #plumbing & #heating equipment, raising industry best practice, making affordable systems safer, sustainable, easier to fit & maintain.	730
175. (171)	CoolMentoring.org STEM Mentoring #coolmentoring #STEM #Mentor #beamentor	730
176. (182)	Remeha Tweets from Remeha, the leading supplier of energy-efficient, low NOx commercial heating solutions.	728
177. (179)	Zehnder UK Indoor Climate Solutions: Heating, Cooling & Ventilation.	728
178. (174)	Mercury Engineering We're an Irish based European contractor. We build and manage complex engineering projects that reimagine how people work & live in the built environment.	727
179. (173)	Nu-Heat UK Nu-Heat is the largest specialist supplier of warm water underfloor heating systems to the UK domestic market, delivering fully designed underfloor systems.	727
180. (177)	PHCPPros Your professional plumbing, heating, cooling and piping community. #PHCNews #PlumbingEngineer #TheWholesaler #Especificar	726
181. (178)	TroupBywaters+Anders We are high performing, award-winning consulting building services engineers, bringing buildings to life for over 60 years.	725
182. (175)	Electrical Charity Supporting our people through life's challenges. The Electrical Industries Charity is the national charity for the electrical and energy industries.	725
183. (188)	CIBSE West Midlands The Chartered Institution of Building Services Engineers (CIBSE) West Midlands region	725
184. (181)	The IES Team Passionate about green building, software simulation tools for architects & engineers and consulting services for design and operation of sustainable buildings	724
185. (186)	Susie Diamond I am a partner at Inkling - a Building Physics consultancy keen to help make buildings more comfortable and energy efficient. #BuildingPhysics	724
186. (187)	Reznor The UK's leading supplier of warm air heating and radiant heating systems to the industrial and commercial markets as part of Nortek Global HVAC	724
187. (193)	Heating Controls Heating Controls & Devices (HCD) we specialise in all types of domestic & industrial Oil & Gas repairs. We’re GAS SAFE Accredited on Domestic & Commercial Gas .	723
188. (183)	Eric Stromquist I am in to HVAC controls, argentine tango, NLP, and using social media marketing to share information on building automation controls.	722
189. (180)	PHCC-National Assn. Founded in 1883, the Plumbing-Heating-Cooling Contractors–National Association is America’s premiere trade group for the plumbing-heating-cooling professional.	721
190. (197)	NIBE Energy Systems NIBE is one of Europe's leading manufacturers of renewable energy products, offering solutions that reflect today's demand for sustainable construction.	720
191. (192)	Construction Supplying responsibly sourced steel products and technical expertise to the construction industry including cladding systems, composite floor deck and tubes.	720
192. (195)	Sara Kassam #Sustainability | #BuiltEnvironment | #Diversity #Inclusion | #WomeninSTEM | #MotherofDaughters	720
193. (190)	Buteline Plumbing & Heating System - UK Buteline designs, engineers & manufactures a world acclaimed plumbing system for hot & cold potable water, central heating &UFH. Widely used on offsite installs	720
194. (196)	ACR News The only dedicated monthly UK trade magazine for the air conditioning and refrigeration industry.	718
195. (191)	ECD Architects Energy Conscious Design is an award winning UK architectural practice committed to design excellence and sustainability. AECB fans and Passivhaus Trust members.	718
196. (184)	Hurley Palmer Flatt HDR | Hurley Palmer Flatt - engineering consultants, delivering design solutions globally. Leaders in mission critical engineering, energy and sustainability.	717
197. (213)	75F We use smart sensors and controls to make commercial buildings more efficient and more comfortable than ever before.	717
198. (199)	Bouygues Energies & Services UK Bouygues Energies & Services is a client-focused facilities management, energy performance, and smart city partner.	716
199. (194)	TLC Engineering An engineering firm that thinks boldly, listens attentively, and creates passionately.	715
200. (217)	BEAMA BEAMA works with manufacturers of vital products, technologies and services that deliver a safe, low carbon, reliable and smart end to end energy system	715
201. (203)	Airmaster AC We #Design, #Install and #Maintain Mechanical Services in all types of buildings. We specialise in #heating and #cooling solutions and passionate about #energy!	715
202. (200)	Coffman Engineers Civil, structural, mechanical, electrical, fire protection, PMCM, corrosion control, pipeline integrity mgmt, commissioning, & industrial consulting engineers.	714
203. (198)	Yaskawa America, Inc. News and resources from Yaskawa America, Inc. - Drives and Motion Division the world's largest manufacturer of inverter and servo drives, servomotors	714
204. (202)	Vital Energi UK’s market leaders for providing district heating, energy generation and energy management solutions. **Account not monitored out of office hours.	714
205. (210)	Hilson Moran Leading multidisciplinary engineering consultancy for the built environment. Creating Environments for Life.	713
206. (201)	Smart HVAC Products We introduce new and innovative HVAC products to HVAC professionals. https://t.co/raFWzovYPT	712
207. (223)	EVORA We make #buildings productive, profitable, and resilient to change. Our market leading #sustainability #data #software, @sierasoftware, enables this.	712
208. (204)	SALUS Controls SALUS Controls is a lead supplier of energy control solutions focused primarily on the European professional market channel. Think Heating, Think SALUS.	712
209. (218)	Plumbing&Heating Mag Plumbing & Heating Magazine specialises in news from the plumbing and heating industry in Ireland – giving a local angle to the news and events in the trade.	712
210. (205)	Heatrae Sadia The UK's largest manufacturer of electric water heating products, we have the most comprehensive product range and a commitment to product innovation & quality.	711
211. (219)	Steven Hunt Assoc Mechanical & Electrical Consulting Engineers based in #Liverpool - helping create buildings that come alive for 30 years	711
212. (207)	Tyco_IS Tyco is now Johnson Controls, the world leader in, security, fire protection, HVAC, building controls and energy storage.	710
213. (209)	ESTA The UK’s Energy Management industry association for demand-side energy management and efficiency including buildings, processes and transport.	710
214. (216)	LG UK B2B LG Electronics UK Business Solutions. Innovative and cutting edge technology for Commercial Display, Hotel TV, Heat Pumps, Air Conditioning and Energy Solutions	709
215. (215)	Elementa Consulting Elementa is an award winning building services, low carbon and sustainability consultancy specialising in low energy design.	709
216. (221)	Dr Penny Sarah Carey	709
217. (208)	Ecolution Consulting Leaders in sustainability and green building	709
218. (206)	Simon Sturgis Working for a low carbon built environment. ex-Chair @RIBA Sustainability Group, MD of #TargetingZero, author of @RICSnews and @RIBA Whole Life Carbon guidances	708
219. (214)	Ref_Industry Follow and use #refindustry for #refrigeration news. Send your refrigeration news info@refindustry.com.	708
220. (220)	Atelier Ten As environmental design consultants and building services engineers we are committed to high-performance and sustainable design within the built environment.	705
221. (212)	KMC Controls KMC Controls provides IoT and Automation solutions to increase operational efficiency, optimize energy usage, and make spaces more comfort and safe.	703
222. (222)	CPW East Mids Environmental Building Services Consultancy. Making buildings feel good. We are the East Midlands offices of CouchPerryWilkes.	703
223. (224)	BuildingIQ BuildingIQ's 5i Platform of technology-enabled services is comprised of five components: data capture and analysis, modeling, M&V, control, and human expertise.	701
224. (211)	APCbySchneiderElecIN We combine Technology with Innovation to create a sustainable future and an energy efficient world. Join us in this journey of change!	701
225. (227)	Glumac Engineers Glumac, a Tetra Tech Company, is a global MEP engineering and commissioning firm focused on delivering Green Buildings That Work.	701
226. (230)	Digital Energy Solutions Energy Solutions for all Businesses - Complete #solutions for #Metering #Monitoring #CRC #ESOS #ISO50001 #compliance #energy #energyefficiency #savings	700
227. (232)	Bosch Security AP Supplier of security, safety, communications products/systems & solutions for building security/automation & energy efficiency. Imprint https://t.co/bFSHPUZSF6	698
228. (225)	Luxaire HVAC The official Twitter account for Luxaire HVAC. Follow us to stay up to date with the latest news.	698
229. (228)	REHVA REHVA is the Federation of European Heating,Ventilation and Air Conditioning Associations representing a network of more than 120000 engineers from 27 countries	698
230. (234)	Switch Automation Switch Automation creates technology to bring people and planet to the center of building operations.	697
231. (236)	Senseware #IoTPlatform for rapid #IoT solution architecting. Accelerate time to market with real-time cloud services #DigitalTransformation #Industry40 #digitization #IAQ	697
232. (226)	Titon Manufacturer and supplier of MVHR systems, trickle ventilators and window and door hardware. Office hours 8.15am - 4.45pm Monday to Friday.	697
233. (235)	Aspen Pumps Group Making the engineer's life easier. Providing everything HVAC/R professionals need under one roof.	696
234. (231)	Monodraught® Natural Lighting, Natural Ventilation and Natural Cooling	696
235. (229)	SVM Building Services Design SVM- BSD is firm of mechanical and electrical consulting engineers that make buildings comfortable, functional and efficient.	695
236. (239)