High Efficiency Heat Pumps More than 20,000 high efficiency ductless heat pumps have been installed in Maine homes and businesses in the past 3 years. Word is spreading quickly about how this exciting new technology is able to extract heat from outdoor air (even when it is very cold) and deliver heat energy into homes. There are over 400 Registered Vendors actively installing units around the state who are familiar with the highest performing models as well as our rebate process. Heat pumps can also be part of larger home energy upgrades that qualify for up to $5,000 in incentives. Efficiency Maine offers residential rebates through the Home Energy Savings Program on the installation of eligible high efficiency heat pumps. Click here for Eligibility Criteria and Units. Other important forms include the HESP Rebate Claim Form and the Heat Pump Installation Checklist which needs to be submitted with the claim form and a paid invoice. $500 rebates are available toward installation of ductless heat pumps that provide a single or first zone of heating in your home.

An additional rebate of $250 is available for ductless heat pump installations that provide a second zone of heating in your home. The combination of these rebates can be received with either multiple single indoor unit systems or with a single larger system installed with multiple indoor blower units and completed on or after 9/14/16. ac outside unit freezing upHeat pump rebates require heat pumps that meet minimum efficiency standards and are installed by a Registered Vendor.indoor ac unit not cooling Click on the video below to see a Ductless Heat Pump Case Study in Presque Isle:air conditioner window unit manual Registered Heat Pump Installers – Click here to find some installers in your area that sell heat pumps. Get incentives and financing for energy upgrades – Click here to find out about loans and incentives for projects that include energy assessments, air sealing, insulation, heat pumps and more.

Cost of Heating Comparison Calculator – Click here to find out how much you could save by using heat pumps. Find more information about this exciting technology below: Long used for cooling in warm climates, heat pumps are now one of the fastest growing technologies for ultra-efficient heating in cold climates. Rather than generate heat from combustion or electric resistance, heat pumps extract heat from outside air or the ground and deliver it indoors as needed. This process is a more cost-effective way to heat than most conventional systems. In the summer, heat pumps can reverse and work as air conditioners, cooling indoors and rejecting heat outside. Watch this video to learn more about heat pumps. Heat pumps generally fall into two categories: Air-source heat pumps draw heat from an outdoor unit and deliver it indoors. In the summer, they reverse and act as high-efficiency air conditioners. A. Ductless heat pumps have one outdoor unit connected to one or more indoor units with small copper lines.

These are the most efficient air-source systems and are often installed in homes and offices to supplement existing systems, usually in the most frequently used rooms like family rooms or bedrooms. Over the course of a typical Maine winter, these units can deliver more than three units of heat for every unit of electricity used. B. Ducted heat pumps have an outdoor unit connected to a building’s ductwork. Like ductless heat pumps, ducted heat pumps can both heat and cool buildings. Ground-source heat pumps or “geothermal” heat pumps draw heat from the soil or groundwater and transfer it to a ducted air distribution system or radiators. Ground-source heat pumps are typically more efficient and more expensive than air-source heat pumps. Low-cost heat – The cost of heating with a heat pump is similar to heating with natural gas or wood. This is typically half the cost of heating with oil, kerosene, electric baseboard or propane. Click here to compare heating costs of different heating systems.

Low-cost air conditioning – Today’s best heat pumps are twice as efficient as typical air conditioners. Comfort – With advances in controls, heat pumps can maintain very constant temperatures. Safety – Because heat pumps are electrically powered, there is no risk of combustion gas leaks. Air quality – Heat pumps filter air as they heat/cool/dehumidify it. Cold temperature performance – As outdoor temperatures drop, so does the efficiency of an air-source heat pump. For example, a unit that delivers four units of heat for every unit of electricity at 50°F, may only deliver two units of heat for every unit of electricity at temperatures below zero. There is evidence of highest performance units operating and providing heat even below -15 °F in Presque Isle but if the temperature drops low enough, the system may turn off completely. For this reason, homeowners may choose to keep existing heating systems in place to serve as a secondary backup when outdoor air temperatures are very low.

Click here for a ductless heat pump e-brochure. Click here for a ductless heat pump user tips guide.Air ConditionersMarvair® air conditioners are designed and built for many markets and applications. Pac® wall mount air conditioners are used to cool telecommunication shelters and electronic equipment rooms.ModPac™ wall mount air conditioners are used primarily in the commercial modular & classroom markets.The GreenPac™ & GreenPac HGR™ wall mount air conditioners feature the Marvair GreenWheel® ERV energy recovery ventilator and are used in relocatable and permanent classrooms to meet ASHRAE ventilation requirements & control humidity levels.Download the Marvair Air Conditioner Product Quick Reference Selection Guide ComPac® Models AVPA, AVHA, HVEA, HVESA Exterior Wall MountModel AVPA: 9.0 - 10.00 EERComPac AVPA wall mount air conditioners are our most popular units and are available in cooling capacities of 1, 1.5, 2, 2.5, 3, 3.5, 4, 5 and 6 tons (12,000 BTUH to 72,000 BTUH).

The ComPac AVPA is suitable for operation up to 120°F (49°C). Model AVHA: 10.0 EERAVHA models have EER’s of 10.0.Model HVEA: 10.5 - 11.5 EERThe ComPac HVEA high efficiency air conditioners have cooling capacities of 2, 2.5, 3, 3.5, 4, and 5 tons (24,000 BTUH to 60,000 BTUH). All HVEA models are suitable for operation up to 120°F (49°C).Model HVESA: 10.5 - 11.5 EERThe highly efficient ComPac HVESA 3, 3.5, 4 & 5 ton models (36,000 BTUH-60,000 BTUH) are built with 2-stage compressors. First stage cooling is approximately 65% of the total cooling capacity. The 2-stage compressor provides lower start-up amps which can be critical when operating with a generator. The two stage compressor also reduces energy costs by more precisely matching its cooling capacity with the heat load in the shelter. ComPac® II Models ASDCA, ASDCHA & HSDCA Exterior Wall Mount with 48VDC Evaporator Air MoverModel ASDCA: 9.0 - 10.0 EERBudget oriented standard efficiency models have an Energy Efficiency Ratio (EER) of 9.0 to 9.5 with cooling capacities of 3, 3.5, 4, 5 and 6 tons (36,000 BTUH to 72,000 BTUH) Model ASDCHA: 10.0 EERHigh Efficiency 48 VDC models with an EER of 10.0 and cooling capacities of 3

, 3.5, 4 and 5 tons (36,000 to 60,000 BTUH).Model HSDCA: 10.5 - 11.5 EERMarvair’s most efficient wall mount 48 VDC ultra high efficiency air conditioners. Rated at 10.5 - 11.5 EER and available in cooling capacities of 3, 3.5, 4 and 5 tons (36,000 to 60,000 BTUH). ModPac® II Exterior Wall MountModel AVPA: 9.0 - 9.5 EERThe ModPac II is a cost-effective air conditioner used primarily for modular and relocatable buildings. The unit is built in cooling capacities of 1, 2, 2-1/2, 3, 3-1/2, 4 and 5 tons. A factory installed disconnect is standard. Electric heat can be field or factory installed. Accessories include supply and return grilles and thermostats. The sloped top and built-in mounting flanges, both Marvair firsts, simplify installation. GreenPac & GreenPac HGR Models AVPA, HVEA, HVESA Exterior Wall Mount with GreenWheel® ERVThe Marvair® GreenPac™ and GreenPac HGR™ (Hot Gas Reheat) air conditioners are complete, factory assembled wall-mounted systems designed to provide total comfort while meeting ventilation requirements.

Optional electric heat is available on all models. Ventilation packages include either the GreenWheel® or the GreenCube® Energy Recovery Ventilator (ERV). The GreenWheel ERV is a total energy wheel that can recover both sensible and latent heat with efficiencies of up to 75%. The GreenCube ERV is an enthalpy plate heat exchanger that transfers sensible and latent energies between the outgoing and incoming air streams. The use of the GreenWheel or GreenCube ERV allows compliance with ASHRAE standard for ventilation requirements while keeping operating costs to a minimum.Model AVPA: 9.25 - 9.5 EERModel HVEA: 10.5 - 11.75 EERModel HVESA: 10.5 - 11.75 EERGreenPac and GreenPac HGR AVPA models have an Energy Efficiency Ratio (EER) of up to 9.50. The AVPA & HVEA (single stage compressor units) are built in nominal cooling capacities of 2, 2½, 3, 3½, 4 and 5 tons. The HVESA (2-stage compressor) units are available in nominal cooling capacities of 3, 3½, 4 and 5 tons are our most efficient models and feature EERs of up to 11.75.

No wall mount air conditioner is more efficient. The 2-stage compressor models matches the cooling capacity to the heat load for better comfort for pupils and teachers. GPac Air ConditionersModel AVGA: 9.00 - 9.60 EER with 80% Heating EfficiencyThe GPac wall mounted air conditioner with gas heat is designed for use on a variety of applications including modular classrooms, relocatable offices and a multitude a permanent buildings. The GPac unit is manufactured in two cabinets with nominal cooling capacities of 2, 2-1/2, 3, 3-1/2, 4, and 5 tons and input heating capacities of 45,000; 100,000 and 125,000 BTUHs.  The unit is available with a number of factory and field installed options and accessories that permit the user to optimize the unit for specific applications. Marine & Work Boat Air ConditionersModels MVS & MVWThe Marvair Marine self-contained water and air cooled air conditioners are designed for both new installations and for replacement of older, less efficient units in marine applications.