WHAT IS A SOLAR ASSISTED HEAT PUMP WATER HEATER?
A heat pump water heater is best described as ‘A Fridge in Reverse’. A household refrigerator uses an exposed panel to keep its contents cold. A heat pump water heater utilizes the same principle to achieve the opposite effect- circulating refrigerant liquid through a panel and absorbing rather than rejecting heat. Solar assisted heat pump water heaters (SAHPs) utilize an exterior aluminum panel to absorb heat- eliminating the need for a fan or internal area from which to “steal” heat. SAHPs are an all-electric appliance using renewable energy to reduce electric consumption by over 50% (as compared to common electric resistance water heaters.)
HOW DOES IT WORK?
SAHP water heaters are engineered to harness energy 24 hours a day, 365 days a year. Unlike solar panels, thermodynamic panels do not require direct sunlight to harvest energy. The panel utilizes the ambient air temperature (day and night in all weather conditions) to change the refrigerant liquid to a gas. The SAHP captures the energy created by this phase change. The heating cycle initiates when refrigerant liquid starting at 8*F is pumped into the panel. This remarkably low temperature allows the panel to transfer ambient energy to the refrigerant, at any hour of the day- even in freezing conditions. As the refrigerant liquid passes through the panel, the ambient energy raises the temperature of the liquid. Once the liquid is heated to 5*F it vaporizes and becomes a gas. The refrigerant gas is then pulled into the SAHP and compressed to create heat. This heat energy is directed into the heating coil wrapped around the internal water storage tank- heating the water to 130°F or more. Once this heat energy is used, the temperature of the refrigerant liquid returns to -8*F and the heating cycle starts again.
SOLAR ASSISTED HEAT PUMPS
STAINLESS STEEL TANK
No anode rod necessary- 25 Year Warranty!
REDUCED ELECTRICITY USE
Using renewable energy to reduce electric consumption by 50% or more (as compared to common electric resistance water heaters.)
NO FANS OR DRAINS NEEDED
Evaporator panels are mounted outside so no fans, filters, or drains are necessary thus reducing maintenance, and noise level.
INTERIOR TEMPERATURE IS NOT AFFECTED
Unlike common heat pump water heaters, heat is harvested from the exterior, so there is no need for interior air space from which to “steal” heat.
SAHPs qualify for the 26% Federal Solar TAX CREDIT and state REBATE programs, yielding a net cost below common heat pump water heaters.
For more information see the video here:
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