WH Series - Air source heat pump water heaters

E-Tech WH Series high efficiency water heaters are air-source heat pumps specifically designed to heat water. They use environmentally friendly R-134a refrigerant and provide final tank temperatures up to 140°F

How does a heat pump water heater work?

An air source heat pump water heater operates like your home heat pump air conditioner, but instead of heating and cooling air, the E-Tech water heater heats (and in special situations, cools) water. A heat pump water heater is more efficient than the air conditioner because it makes use of virtually 100% of the heat absorbed, consumed and generated by the electrical consumption of the system. The integral refrigeration system captures the heat generated by the compressor motor and the refrigeration compression cycle and converts that energy to water heating as well.

Standard water heaters heat water by converting a fuel source (typically electricity or natural gas) into heat, which is then transferred into the water. This requires the purchase of all of the energy it takes to heat the water. Since no standard water heater is 100% efficient, you actually need to pay for more energy than the water heating requires to make up for the inefficiency.

E-Tech heat pump water heaters work by transferring heat, not creating heat. Heat pumps move energy from someplace it's not needed (in this case, the surrounding air) into the water. The total energy required to heat the water does not change, but you only need to purchase the energy which is needed to move the heat - typically only 20 - 50% of the total energy - saving you up to 80% of energy costs.

Want to know more about heat pump water heaters work?

What are some good applications?

Applications that require large amounts of hot water and that can take advantage of the air conditioning produced by the heat pump are the best candidates for an air source heat pump. Some typical examples are

• Commercial kitchens and laundries. They have large hot water demands and a lot of heat producing machinery. This can create an uncomfortable work environment which can benefit by spot cooling work stations, possibly reducing employee turnover.
• Restaurants. They also have large hot water requirements and plenty of heat producing equipment. Cool air can be vented to the grill or dishwashing stations to improve employee comfort.
• Commercial or industrial applications where the cooling can be ducted into the existing air conditioning ducts to reduce the cooling load on the system.

E-Tech commercial water heaters are an energy saving investment for commercial and industrial applications with large hot water requirements. They provide three important benefits:

1. They reduce energy costs.
2. They cool and dehumidify the surrounding air.
3. They are environmentally friendly.

Hot Water Costs $$$:

E-Tech high efficiency heat pump water heaters can save 50-80% of your hot water energy cost. Applications with high utility costs and large hot water requirements save the most, and your geographic area and local energy costs play an important role in how much you can save.

How much can I save?

Most experts expect energy prices to continue to rise. As energy costs go up, the amount of money you save will continue to increase, making today's investment in high efficiency water heating a wise financial decision.

It gets better…Free Air-Conditioning!

Cool, Dehumidified Air

When the heat pump removes energy from the surrounding air, - what happens to the air? It gets colder! The by-product of a heat pump is cool - dehumidified air. This "free" air conditioning is a natural by-product of heat pump operation. This cool air can be used to offset other space cooling loads, reducing air conditioning costs, or ducted to provide spot cooling for increased employee comfort.

WH series units should not be mistaken for air conditioners, because when there is no demand for hot water there is no air conditioning.

Environmentally Responsible - "Green" technology

E-Tech high efficiency water heaters are environmentally friendly in several ways;

• They reduce the purchased energy demand for hot water production by 50-80 % by using energy already available in the room.
• They can replace fossil fuel water heaters, eliminating their greenhouse gas emissions.
• They use environmentally friendly, non-ozone depleting refrigerants.

E-Tech high efficiency water heaters can be an important component in new green building designs.

Storage Tank Requirements

The WH series integrates into a new or existing storage tank. Proper sizing of the storage tank is an important part of an effective heat pump water heating system. Contact us for help in sizing your storage tank or download the storage tank sizing worksheet.

What models are available?

Standard WH Series machines are available in capacities from 49,000 Btuh to 424,000 Btuh as rated conditions. Custom products are available in capacities up to 1,600,000 Btuh.

Model	Heating Capacity (Btuh)	Cooling Capacity (Btuh)	COP	GPM	Final Water Temp (°F)
WH-50 HT	49,000	35,900	3.3	9	140
WH-Super 60 HT	63,400	50,300	3.3	13	140
WH-90 HT	94,000	68,000	3.4	19	140
WH-110 HT	108,000	81,000	3.4	22	140
WH-140 HT	133,000	97,000	3.4	27	140
WH-160 HT	159,000	116,000	3.4	32	140
WH-220 HT	215,000	159,000	3.4	39	140
WH-280 HT	280,000	216,000	3.3	56	140
WH-430 HT	424,000	338,000	3.3	85	140