HOUSING INDUSTRY RESEARCH CENTER

A Building And Its Systems Are Only As Good as the Knowledge and Professionalism Applied During Initial Construction, Remodeling and Maintenance.
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What is the age of your furnace, air conditioner, heat pump, boiler, air handler or other HVAC equipment? 
ACPO
ADP
Airco
Air Star
American Best
Anthes Western
Argo
Canatal
Century
Clare
Climate Control
Comfort Aire
Command Aire
Consolidated
Corsaire
Crown
Duo-matic Olsen
Elite
Excelsior (See Utica)
Fedders
Franklin Electric
Fraser-Johnson
Freidrich Climatemaster
Geothermal
GMC
Goettl
Grimsby Stove & Furnace
Haier
Hamilton Electric
Heatmaster
Holly General
Hydro Heat
Johnson
Johnstone
Kilmaire
Lear Siegler
Liberty
Lochinvar
Luxaire
McQuay
Mission
Moncreif (See York)
Munchkin
New Yorker (See Utica)
Northrup
Olsen
Olson Duomatic
PFC
Pameco-Aire
Patriot
Payne
Peerless
Polaris
Premier
Riello
RiteTemp
Singer
Square D
State Industries
Stewart-Warner
Sunbelt
Sunburst
Sundial
Sun Glow
Texaco
Thermo Pride
Trane
Valliant
Weatherking - Addison Products Company
Wesco
Williams
  
OFF SITE RECOMMENDATIONS:  Work of others that we recommend for reading or view.
 
HVAC Assessment Handbook - A Practical Guide to Performance Measurements in Mechanical Heating, Ventilating and Air Conditioning Systems.  2003 Copyright work of TSI Incorporated.  (pdf file - 35 pages).