Air Source Heat Pumps

More Comfort and Higher Efficiency. Fewer Emissions. All Year Long.

Air source heat pumps are an all-electric system that delivers heat in the winter and air conditioning in the summer. It replaces the traditional furnace and central AC system, providing home owners with more comfort and greener energy use.
If you are building a new home or are in the market to replace your heating and cooling system, you’ll want to consider an air source heat pump (ASHP). Thanks to new technology advancements, ASHPs are a great choice for cold climates like Michigan.

According to the Department of Energy, these all-electric units can deliver one-and-a-half to three times more heat energy to a home than the electrical energy it consumes, resulting in up to 300% efficiency. What’s more, these energy-smart units offer a wealth of additional benefits for homeowners and the environment.
ASHPs use electricity to transfer energy between indoor and outdoor air. Because they move heat rather than generate heat, these systems consume far less electricity than electric furnaces, baseboard heaters or space heaters.

In cooling mode, the heat pump functions like an air conditioner, moving heat from inside to outside the home. In heating mode, the refrigerant flow is reversed to extract low-temperature heat from outdoors and deliver concentrated high-temperature heat to the home.

Three Types of ASHP Systems

A centrally-ducted ASHP system is typically used when ducts are already available throughout
the home (for example, when replacing an existing furnace and central air conditioner).

A multi-head ductless mini-split system is typically installed when there is no existing ducting or if the homeowner wants zoned control of individual rooms (main living area or bedrooms).

A single-head ductless mini-split system is often installed when trying to heat and cool a specific area of the home, such as add-on rooms, that weren’t ducted.

Heating and Cooling Ratings

Heating efficiency for air source electric heat pumps is indicated by the heating season performance factor (HSPF). This is the total space heating required during the heating season, expressed in Btu, divided by the total electrical energy consumed by the heat pump system during the same season, expressed in watt-hours. The higher the HSPF, the more efficient the unit.

Cooling efficiency is indicated by the seasonal energy efficiency ratio (SEER). It is determined by the total heat removed from the conditioned space during the annual cooling season, expressed in Btu, divided by the total electrical energy consumed by the heat pump during the same season, expressed in watt-hours. The higher the SEER rating, the more efficient the air source heat pump.

ASHP Energy Pricing Options

Air source heat pumps qualify for the D1.1 CoolCurrents® rate, helping you to save even more. CoolCurrents is DTE’s interruptible space conditioning rate that can help customers save significantly on the energy used by an ASHP. Rest assured, we do not interrupt service during the heating season (October through April).

DTE Energy does not sell or install ASHP systems. Customers must have a licensed, independent, electrical contractor install the wiring for a separate D1.1 meter. Please see the Electric Pricing Options page for enrollment instructions and additional information on the D1.1 CoolCurrents rate.

Learn More About ASHPs

Ready to take the next step toward higher efficiency? Submit your contact information through the form below and an ASHP contractor will contact you to discuss what type of air source heat pump is best for your home.

Additional Resources

For more details about ASHPs, see the Air Source Heat Pump page on the Department of Energy website.

DTE ASHP Rebates

With an air source heat pump rebate from DTE Energy, you can start saving right away. To raise your heating and cooling efficiency even more, be sure to check out our Ways to Save page.
Comfort
ASHPs provide extremely consistent temperature, avoiding the hot and cold spikes common in traditional heating and cooling systems. ASHPs don’t turn on and off at certain temperature thresholds. Instead, they continuously run to maintain the desired temperature.
Quiet Operation
Because heat pumps deliver a steady supply of temperature-controlled air, noise caused by the expansion and contraction of heat ducts is eliminated. In addition, both the indoor and outdoor ASHP components are whisper quiet
Environmentally Friendly
Generating electricity to run a heat pump releases less carbon dioxide than burning fossil fuels in a furnace. Just as important, as DTE Energy expands its use of renewable energy, your carbon footprint will continue to shrink.
No On-Site Carbon Emissions
Unlike systems that run on oil, gas, liquid propane gas or biomass fuels, air source heat pumps produce no carbon emissions to heat or cool a building.
Save Money
Switching from propane, fuel oil or an electric furnace will result in significant savings every year. Visit the Northeast Energy Efficiency Partnerships website to learn more about annual savings when using an air source heat pump instead of a traditional heating system.
Flexible, Easy Installation
For existing homes, an air source heat pump is an easy upgrade because there are systems designed to work in almost any application, with or without air ducts. For new homes, heat pumps provide additional flexibility by eliminating the need for both duct work and a furnace exhaust vent.
Safe Heating
Air source heat pumps run on electricity, so you’ll never have to worry about carbon monoxide (CO) buildup and release or CO leaks inside your home.
Simplicity
Having one unit for heating and cooling simplifies your maintenance regimen when compared to a traditional system comprised of a furnace and A/C unit.
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