Water to Air Exchanger

Water to Air Heat Exchangers are designed to fit right into your plenum of your exiting hot air furnace. These exchangers are made with the finest quality in the business.

If you don't understand BTU (British Thermal Unit) This might make it a little easier to understand. 
 

60,000	Used Primarily in one room applications. Single garage, clothes dryer, hot tubs. Heats roughly 250 square feet
80,000	Used for most mobile home, single car garages. 1" Sw ports Heats roughly 500 square feet.
80,000	Used primarily for double garages, small workshops. Heats roughly 800 square feet
100,000	Used in work shops and small quest homes. Heats roughly 1500 square feet
125,000	Used in small homes and large work shops. Heats roughly 2000 square feet
140,000	Used for most homes and large garages or workshops. Heats roughly 2000 to 3000 square feet
160,000	Used to heat large homes. Heats roughly 3000 to 4500 square feet
200,000	Designed for commercial use. Heats roughly 4500 to 6000 square feet