Comfort-Calc Heat loss and heat gain calculations Links to manufacturers

Links To HVAC Manufacturers

 US Boiler- Boilers, Radiant Heat, Indirect water heaters, Cast Iron Radiation
  New Yorker Boiler - Boilers, Indirect water heaters
Weil Mclain - Boilers, Radiant Heat, Baseboard Heat, Indirect Water Heaters
Pennco - Boilers
 Slant Fin - Boilers, Indirect Water Heaters, Baseboard Radiation
  Lochinvar - Boilers
Teledyne Laars - Boilers, pool heaters
  IBC Corp. - Boilers
 Newmac - Boilers, furnaces
Triangle Tube Boilers - Boilers, Indirect water heaters
 Dunkirk - Boilers, Indirect Water Heaters
Utica - Boilers, Indirect water heaters
 Columbia - Boilers, Indirect Water Heaters
HTP Products - Boilers, Indirect water heaters
Pensotti - Boilers, Indirect Water Heaters
Rinnai -boilers
Bosch - Boilers, Indirect Water Heaters
Biasi - Boilers, Indirect water heater 
Velocity Boilers - Boilers, Indirect Water Heaters
 
Energy Kinetics - Boilers
.
Peerless - Boilers, Indirect Water Heaters
.
Viessmann - Boilers, Indirects, Indirect Water Heaters
.
H.B. Smith - Boilers
.

Burner Manufacturers

R. W.  Beckett - Professional
R.W. Beckett - Homeowner
Riello Burners
Carlin Combustion Tech.

Parts Manufacturers

Taco
Grundfos - USA
Caleffi - US
Watts HVAC