The models listed on this page reflect the latest commercial dual coil ECU units.
The Doucette Heat Recovery Unit captures waste heat discharged from the refrigerant cycle in an Air Conditioning
or Heat Pump system, and transfers that heat into a water storage tank, thereby creating low cost hot water for
domestic or service use. Not only does the Heat Recovery Unit substantially reduce the amount of energy required
to provide domestic or service hot water, but it also improves the cooling efficiency of the Air Conditioner or Heat
Pump while it is operating. The Light Commercial models are designed to operate with systems of 5 to 20 ton
cooling capacity.
• 230 volt wiring for easy connection to compressor contractor
• Factory wired and preset controls
• Fully automatic operation
• High-Efficiency Vented Double-Wall Heat Exchanger
• Water lubricated low wattage Circulator
• Grounded electrical circuit
• Sturdy Aluminum Cabinet with baked enamel finish for outdoor or indoor use
• ARL listed Appliance, with UL approved components
• Freezestat option available
It's been more than 25 years since the first Heat Recovery Units were produced and installed on residential air conditioners but, even now, about twice a year we hear from someone who says that their A/C Contractor claims that it will void the warranty if they add a Heat Recovery Unit to their A/C. Each time we hear this, we investigate. We have never been able to find any written confirmation nor corporate representative willing to support the claim. Our Heat Recovery Units are sold directly to Carrier, Trane, Lennox, Goodman, and most other brands for use with their own equipment. We also sell to nearly every major national distributor of HVAC components and systems. Of course, all units must be installed by licensed contractors according to the provided installation instructions.