Lennox Indoor Comfort Systems. "Commercial and residential heating and air conditioning systems" www.lennox.com Basys Controls Commercial DDC control systems. "Where buildings connect with business" www.tcsbasys.com Viessman International Commercial, industrial and residential boilers. "More than heat" www.viessmann.ca   LINKS  McQuay International Commercial and industrial air conditioning and refrigeration systems. "Engineered for flexibility and performance" www.mcquay.com York International Commercial, industrial and residential heating, air conditioning and refrigeration systems. "Leading the world in heating, ventilation, air conditioning & refrigeration" www.york.com Carrier Commercial, industrial and residential heating, air conditioning and refrigeration systems. "The world leader in air conditioning, heating and refrigeration systems" www.carrier.com Dunham Bush USA Commercial and industrial air conditioning and ventilation systems. "Custom solutions for today's world" www.dunham-bush.com Liebert Commercial computer room environmental control systems. "Precision air conditioning" www.liebert.com Weil-McLain Commercial and industrial boilers. "America's #1 boiler manufacturer" www.weil-mclain.com Nortec Commercial, industrial and residential humidifiers. "Better humidifiers for every application" www.humidity.com Arzel Zoning Technology Inc. Commercial and residential zone control systems. "A unique solution for comfort and efficiency" www.arzelzoning.com HRAC The Heating Refrigeration & Air Conditioning Institute of Canada "Contractors Division" www.hrai.ca Nova Scotia Construction Safety Association www.nscsa.org Ainsworth Inc "One Source,One solution" www.ainsworth.com Heritage Gas "Putting our energy here naturally." www.heritagegas.com © Halifax Heating & Air Conditioning -Ainsworth Group of Companies 2011