Amtrol - tankless coils
Anvil - malteable/cast iron fittlings

Bell & Gosett - heating specialities
Bock - water heaters
Barner & Jones - steam traps
Beckett - burners/parts
Beacon /Morris - kickspace and unit heaters

Crown Engineering - oil parts
Chemicals - Colco, Durocraft, Fppf, Arcan,
Utilityl, Unigard, Stewart Hall, Harveys, Rectorseal,
Nokrode, Oatey, and Hercules

Delavan - oil nozzles
Ducpac - sheet metal

Easy Heat - heat tape

Fields - controls
Firomatic - oil fittings

General Insulation - rubatex, thermacell, fiberglass,
red rubber, and zeston fittings

HeatTimer - vari•valve vents
Hoffman - pumps, floats, and traps
Honeywell - controls
Hydrolevel - controls

Lynn Products - chambers
Lima - registers and grills

Maine Tanks - oil tanks
McDonnell Miller - controls
Millrose - fitting brushes
Mueller - copper fittings

NE. AIR GAS - gas refills

O.E.M. - oil equipment fillings
Olsen - warm air furnaces and a/c
equipment

Purolator - air filters
Panasonic - mini split systems

RTI - pex tubing
Radiant panel - pex fittings
Raypak - boilers/heaters
Rigid - tools
Reillo - burners/parts
Roth - oil tanks

Scully - oil products
Shook - speed screws
Silvabrite 100 - solder
Simpson - b•vent, all fuel
Skuttle - humidifiers
Smith - humidifiers
Spirotherm - spirovents
State - water heaters
Starrett - tape measures/levels
SSC - heating specialties
Suntemp - baseboard
Sparco - mixing valve

Taco - heating specialties
Therma-Flow/Everhot - coils, tanks
Turbo•Torch - gas products

Vaughn/Sepco - water heaters
Ventrite - steam vents
Viessmann - boilers/controls

Watts - ball valves / regulators
Williams - heaters