Connecting Hot Water Heater To Geothermal

That might do what you need emphasis on might.

Connecting hot water heater to geothermal. Here is my story. With a ghp you can get a factory installed domestic hot water generator dhw generator or as the techies call it a desuperheater. By passing this extra heat off to the dhw circuit in the ghp you get free hot water. A geothermal heat pump heats your home using a compressor.

What you really need is an thermal engineer. Ghps boast cops of 4 0 to 5 0 or more meaning that it takes about 25 percent of the energy consumption to make hot water from a ghp as compared to a tankless heater. The last few days i have been reading through the forums to try and find an answer but i can t figure out if a special water heater needs to be used with certain brands of geo systems. Best guess would be a 2 ton water to water unit.

A tankless water heater can be plumbed into the geothermal system to provide supplemental heat on the coldest of days to the water coming into the ground source heat pump. The desuperheater harvests the extra heat using a pump and heat exchanger and deposits it into your electric hot water tank. That s because tankless heaters use either combustion or electric heat that is rated at a coefficient of performance cop of 1 0 or less. With the tankless water heater in the system the heat pump and ground loop can be sized a little smaller which saves on purchase and installation costs.

Normally we suggest a 600 ft coil in a 250 ft horizontal trench 6 ft deep per ton. A 2 ton unit would require two 250 ft trenches at 6 feet deep. In the cooling mode the ghp is taking heat out of the house and returning it to the cooler earth.