Posted: August 11, 2025

Ground-Source vs. Air-Source Heat Pumps

Could your home benefit from an all-electric heating and cooling system?

Heating and cooling your home efficiently shouldn’t be complicated. For South Shore homeowners, heat pumps can be an effective option to maintain year-round comfort while keeping energy costs in check. But if you’re unfamiliar with these systems, it can be hard to know the difference between ground-source and air-source heat pumps. Let the Atlantic-Pratt Energy team provide this primer on how they work and which system is best suited for your needs.

Ground-Source vs. Air-Source Heat Pumps

Heat pumps are fully electric systems that transfer heat between the inside and outside of your home. There are two main types of heat pumps.

Ground-Source Heat Pumps (also known as geothermal heat pumps) pull heat from and transfer heat to underground sources. While they are highly efficient, their installation requires digging into your property, which results in higher upfront costs and more extensive installation work.

Air-Source Heat Pumps (ASHPs) transfer heat between your indoor and outdoor air. These systems are far less invasive to install, more affordable upfront and versatile enough for New England homes.

For many homeowners in Milton and across the South Shore, air-source systems typically offer the perfect balance of efficiency and practicality.

Benefits of Air-Source Heat Pumps

As specialists in air-source heat pumps, Atlantic-Pratt Energy recommends these systems for several compelling reasons:

1. Ease of Installation. One of the key advantages of air-source heat pumps is their simple design. The system includes two main components: an outdoor compressor/condenser and an indoor air handler connected by a thin pipe through your wall. These systems don’t require excavation, making installation straightforward and non-intrusive. You can even connect multiple air handlers to a single compressor, ensuring every corner of your home remains comfortable.
2. Lower Upfront Costs. With a smaller price tag than ground-source systems, air-source heat pumps are a budget-friendly solution for homeowners. Plus, state and federal programs like Mass Save® offer rebates that further lower your costs, making this high-efficiency technology more accessible than ever.
3. Year-Round Comfort. During the winter, the system compresses outdoor air to deliver cozy warmth to your home. Once summer rolls around, it reverses the process, extracting heat from inside your home to cool it down. (Please note, many homeowners elect to hold onto their gas or oil-powered heating system as a backup to the heat pump on the coldest days of the year.)
4. Energy Efficiency. Zoned heating and cooling is a highly energy-efficient way to keep your home comfortable. By directing air only to the areas that need it, you avoid wasting energy on unused spaces.

Getting the Right Fit for Your Home

Sizing your air-source heat pump correctly is crucial. If it’s too large, you’ll consume energy unnecessarily and miss out on potential savings. If it’s too small, it may struggle to meet your home’s heating and cooling demands, leading to faster wear and tear. Factors like your home’s size, insulation and window quality also play a role in determining the perfect system.

Choose Atlantic-Pratt Energy for Your Heat Pump Installation!

With over 100 years of experience serving our part of Massachusetts, Atlantic-Pratt Energy is known for delivering reliable, professional HVAC installations. We offer a FREE consultation to determine if an air-source heat pump is the right solution for your home. Should you move forward, we’ll handle everything—from installation to helping you qualify for available rebates.

Keep your home comfortable every season. Contact us today to schedule your FREE heat pump consultation and discover how air-source heat pumps can enhance your home’s heating and cooling capabilities.