HEAT PUMP FAQs

 

Who are the major manufacturers of heat pumps?

For our climate, Fujitsu, Mitsubishi and Daikin are the leading mini-split heat pump brands.


DO THEY STOP WORKING WHEN IT GETS COLD?

Every heat pump has a “low temperature rating” provided by the manufacturer to indicate at what outdoor temperature the equipment will stop working. Most heat pumps we sell provide 100% of their rated heat capacity at outdoor temperatures as low as 5°F and have low temperature ratings of -15°F or -13°F.  


DO I NEED A BACKUP HEAT SOURCE?

This depends on how the heat pump system is designed, and the needs of your house. Many new homes are putting in only heat pumps with no backup systems. Some people install heat pumps as supplemental heat only. It’s not a bad idea to have a backup system, but we can discuss your specific needs during our site visit.


SOLAR ELECTRICITY FAQs

 

HOW DOES NET METERING WORK?

Net metering is an agreement between the electric utility and a homeowner. It means that when solar panels produce extra electricity not used by the house, the utility tracks how much is sent out to the grid and compensates the homeowner for it.


WHAT TAX CREDITS AND REBATES ARE AVAILABLE?

There are no rebates currently in Maine. To see more information on tax credits, please visit this page: http://energy.gov/savings/residential-renewable-energy-tax-credit


how do i keep snow off my panels?

Panels generally shed most snow by themselves, since they are facing the sun and installed at an angle. We don’t recommend raking or brushing snow off by hand because of the risk of damaging the panels.


HEAT PUMP WATER HEATER FAQs

 

WHAT SHOULD I CONSIDER BEFORE I BUY ONE?

Ideally you have an insulated basement or garage to install the unit. You'll need at least 12" of clearance above, 700 cubic ft around the tank, or a louvered door. You'll also need some kind of drain nearby for condensate drainage; otherwise a pump will be needed.


WHAT TAX CREDITS AND REBATES ARE AVAILABLE?

For rebates, please visit this page: http://www.efficiencymaine.com/at-home/water-heating-solutions/

For tax credits, please visit this page: http://programs.dsireusa.org/system/program/detail/1274


WHAT SIZE TANK DO I NEED?

Look for water heater models with a first hour rating that matches within 1 or 2 gallons of your peak hour demand (the daily peak 1-hour hot water demand for your home).


INSULATION FAQs

 

WHAT TAX CREDITS AND REBATES ARE AVAILABLE?

For rebates, please visit this page: http://www.efficiencymaine.com/docs/HESP-Completion-Form-Universal.pdf

For tax credits, please visit this page: https://www.energystar.gov/about/federal_tax_credits/insulation