Peirce 2145 Center Square Rd Phelps 8085 is one of the 50 largest HVAC supply houses in the country and continues grow and aggressively expand its residential and commercial customer base. AREAS SERVED: Peirce-Phelps operates HVAC supply houses in Pennsylvania North Carolina Maryland New Jersey and Delaware. What Brands Does Peirce-Phelps Sell? Peirce-Phelps carries name brand HVAC supplies from Appion Bacharach Beckett Braeburn Bryant Carlyle Carrier Coleman Cooper Diversitech Dwyer Field Controls First Company Friedrich Frigidaire General Hart & Cooley Honeywell ICM Imperial JB Klein Lambro Lars Lenox Lux Magicaire Mitsubishi Mueller Nu-Calgon Oatey Packard Parker Hannifin Rectorseal Refco RGF Rinnai Ritchie Robertshaw Slimduct Superior Tecumseh Tjerland Toshiba Trion Venstar Watts White Rodgers York as well as many others.