Benefits of Air-Source Heat Pumps

Air-source heat pumps are a flexible, cost-effective and energy-efficient option for both heating and cooling your home.

Lower greenhouse gas emissions

Lower greenhouse gas emissions than heating with oil, propane, natural gas, and electric resistance

Cost competitive

Save money on utility bills compared to heating with propane, oil, or electric resistance

All-in-one comfort

Heating, cooling, and dehumidification in one system


Can be installed with or without ductwork to heat and cool an individual room or your whole home

The Technology

How It Works

An air-source heat pump system uses electricity to power a compressor and transfer heat using the refrigeration cycle. In winter, it transfers heat indoors; in summer, it transfers heat outdoors. Think of it as an air conditioner that can also work in reverse.
The system may distribute hot or cold air using your existing ductwork. Ductless options are also available.

Air-source heat pumps are ideal for:

Home remodel | Additions | Small spaces | Controlled heating and cooling in individual rooms | Whole home


How a Heat Pump Works

This Old House | 8 min. 36 sec.

This Old House plumbing and heating expert Richard Trethewey instructs Kevin O’Connor on the basic principles of how a heat pump works.


How Are Heat Pumps Different?

National Grid | 2 min. 20 sec.

National Grid employee Melanie Coen discusses her experience with her home’s heat pump system.

Featured Customer Story

Nia’s New Floor Mounted Air-Source Heat Pump

“Normally the bill is anywhere from $400 to $500, and it was more like $200, I was like, ‘Let me look at that again!’”

Explore Heat Pump Coaching Services

Depending on your utility provider and where you live, you may be able to access complimentary or low-cost air-source heat pump coaching services. The goal of these services is to help you determine the best heat pump setup for your home, learn about incentives, and estimate your potential savings before or as you are engaging with an installer.

Check them out below:

Incentives and Financing

Mass Save®

Electric Heating and Cooling Rebates: Up to $10,000 for a whole home air-source heat pump system. May be at no cost or up $16,000 if your household is eligible for Enhanced Rebates.

Municipal Light Plant

If you live in a town served by a Municipal Light Plant (MLP), check your MLP’s website for incentives and rebates.

Mass Department
of Energy
Resources (DOER)

Alternative Energy Certificates (AECs): One-time payment provided to homeowners installing air-source heat pumps.  A 2,000  square foot home with a whole-home system could receive around 100 AECs, worth approximately $250–$1,000.

Federal Tax Credits

Inflation Reduction Act: Federal tax credit of 30% up to $2,000/year.

Federal Rebates

Inflation Reduction Act: Up to $8,000 depending on your household size and income.

Financing Options

Mass Save® HEAT Loan: Up to $50,000 at 0% interest over terms of up to 7 years.

Example Cost for a 2,000 FT2 Home

Cost after incentives is estimated by subtracting $10,000 Mass Save rebate, AECs worth $1,000, and Federal Tax Credit of $2,000 from up-front cost.
Cost after incentives may be substantially lower if your household qualifies for income-scaled State and Federal rebates.

Example up-front cost before incentives


Example cost after


Things to Consider

If you answer yes to ANY of these questions, then air-source heat pumps are a good fit for your home

ASHPS are an efficient heating and cooling solution, which could help lower your utility bills, even if you’re not ready to replace your whole heating and cooling system.

ASHPs are a great option for adding air conditioning while upgrading your heating system at the same time! For homes without existing ductwork, ductless heat pumps can provide heating and cooling to the entire home without the expense and disruption of installing ductwork. 

No need to replace your whole system; a ductless air-source heat pump can be installed just in the hot or cold zone to provide extra heating or cooling.

Ductless air-source heat pumps are often called “zoned home comfort solutions.” You can place indoor units in different zones of your home to heat or cool only the rooms you need.

Your system may be approaching the end of its expected lifetime. Before it fails, consider replacing it with an air-source heat pump system. You may be eligible for rebates from Mass Save to offset the project cost.

Air-source heat pumps run on electricity. If you already have solar panels on your roof that are generating more electricity than your home is currently consuming then you can use the electricity from your solar panels to run your heat pump, decreasing or even eliminating your heating and cooling operating expenses. 

Contact installers to understand how an ASHP could work for you

Questions to ask your air-source heat pump installer

Efficiency First: Weatherize your Home to Save Money

We’re In This Together

Pledge to reduce your home’s carbon footprint by replacing old systems and appliances with clean energy technologies over time.

Join the Clean Energy Transformation

Let's work together to reduce greenhouse gas emissions from our homes and build a clean energy future for Massachusetts.