![]() This assumes that the user possesses installed price information for each system option. Head-to-head comparisons can also be made between one of Enertech's ground source heat pumps and any other heating system such as a furnace powered by oil, gas, or propane each with a separate air conditioner, keeping this an "apples-to-apples" comparison. The software user inputs desired inside temperatures and desired maximum and minimum ground loop temperatures that will supply the heat pump (called EWT, Entering Water Temperature), along with local electric utility rates. The other critical item entered is your building's hourly heating and cooling load (Btu losses and gains at winter and summer design temperatures) and the number of occupants, so that hot water needs can be assessed. The performance data for all versions of this manufacturer's equipment are built into the software, as are the binned temperatures from hundreds of U.S. ![]() But in this case, it is easier to use software for a specific brand and model heat pump, which was done for this Quincy house and its GeoComfort 3-ton unit. The results of heat pump performance testing are not secret (they're proudly displayed in marketing literature). Ground source engineering software called GeoAnalyst® from Enertech Manufacturing predicted the yearly heating, cooling, and hot water expense using their equipment. Use of binned temperature data from Reno was used in two different ways for this house. Notice that the bin with the highest number of hours that month is 105, representing a temperature of 52☏.įIRST APPROACH TO USE PREDICTION AND COST: Together, these "bins" add up to 90 hours of 62 degree outdoor air temperature for the month. In this illustration, the dead band has been expanded to 10 degrees because the subject house has R-49 ceilings, R-30 walls, R-30 floors, and very good windows.Īs a climatic example, row 211 shows the total hours in three time periods when May temperatures average 62°. Good insulation and a ventilated attic make cooling unnecessary until temperatures climb higher, depending on humidity levels. Internal heat loads of refrigeration, lighting, people, and appliances are enough to raise internal temperatures for comfort. Normally, at least a five degree "dead band" exists near 65°, since outdoor temps of this level usually wouldn't require supplemental heating or cooling. The blue/red column assumes at such temperatures there will be either heating or cooling required to maintain desired indoor temperatures. Email confirmations will be sent to you once you click Submit.(Left) "Binned" temperature data from the National Oceanic and Atmospheric Administration (NOAA) for Reno, NV placed into a working spreadsheet built by your Webmaster.Review the confirmation page and select Submit to accept or select the Back button to make changes.To automatically pay your monthly bill online, set up Recurring Payments and provide your Recurring Payment information.If you optionally added the SmartRate TM program, provide your contact method(s) to receive SmartDay TM Alerts.To optionally enroll in the SmartRate TM program, select the SmartRate TM checkbox.Enter the address where you want to start service and select the correct address from the drop-down menu.If your stop service address has solar, electric only service, or you are not removing gas appliances or cleaning with flammable solvents:.Select your appointment date and preferred time.Answer the safety questions for your stop service address.If your stop service address has gas only service, gas and electric services, or you are removing gas appliances or cleaning with flammable solvents:.If you have upcoming scheduled service requests, select Transfer Service.Scroll down to Service Requests and select Start or Stop Service.For the Visitor feature, enter your PG&E account number and the last four digits of your Social Security number OR your last name, zip code, and the last four digits of your Social Security number.If you are not registered for Your Account, you may use the Visitor feature by selecting Visitor on the Sign In screen. Simply sign in to Your Account and follow these steps to transfer your service.
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