This ensures that measurements capture the BTUs that are going in and out of the ground loop not those going to the hot water heater. If the unit is equipped with a hot water assist or desuperheater, the desuperheater should be in the off position. This ensures that the coil, refrigerant, and the coaxial have reached the proper temperature for accurate readings, and enough time has elapsed to achieve good refrigerant oil circulation.
Turn the heat pump on, and be certain the unit is operating at high speed and factory blower high speed for five to 10 minutes. Although every manufacturer recommends its own procedures for starting, servicing and/or troubleshooting a geothermal heat pump, each checklist includes the following: To ensure these savings and the added benefits of enhanced comfort, improved indoor air quality, longevity and a smaller carbon footprint, it's important that the system be serviced at least once a year by a trained technician.
In either case, the geothermal system delivers efficiencies that exceed those of conventional home comfort systems, offering homeowners savings as high as 70% for heating, cooling and hot water. In the summer, the process reverses and the system extracts heat from the home and rejects it to the earth. A geothermal heating and cooling system uses a geothermal or ground-source heat pump and a loop system to extract heat from the earth and carry it to a home in the winter.