Heat Pump Water Heater


Water heating is extremely important, requiring a large amount of energy in the typical residence.  A new generation of water heaters has moved into the marketplace called “heat pump water heaters” (HPWH).  The HPWH uses a fraction of the energy of either conventional electric or gas water heaters.  Conventional water heaters have an annual water heating energy requirement of 5000kWh for a family of four, while a HPWH would require 3000kWh.  What does an energy savings of 2000kWh get you?  2000kWh of energy is enough for 6000 to 8000 miles of electric vehicle transportation.  That is remarkable!

The heat pump water heater (HPWH) ”pumps” energy from the surrounding air into your water tank.  It elevates the temperature of the energy transferred to the water during the process, too.  Because it is removing energy from the surrounding air, it is cooling and dehumidifying the space around it.  This is also an advantage in warm weather because the HPWH helps air condition your house.  It may seem undesirable to allow the HPWH to also cool your house in the winter if you live in a cold climate, but this is exactly what you want it to do.  Rather than moving the HPWH outside, as some have suggested, it is best to leave it where it is, and let your house conditioning system provide a little bit extra heating to make up for the cooling effect.

Newell Instruments has developed its own highly efficient HPWH that complements our CERV (Conditioning Energy Recovery Ventilator).  Because our wireless house control module “talks” to both the CERV and HPWH, you are able to monitor and adjust either system as desired from anywhere in the house (and in the near future, from anywhere in the world).

Newell Instruments HPWH system has been under development in our laboratory for two years, and is supplying hot water to Equinox House (check out the feature on Equinox hot water).  We are in the process of preparing our HPWH unit for UL certification, and plan to have it available in the near future. Subscribe to our Newsletter to receive announcements regarding its development process.