A couple sitting on a couch in front of a wall-mounted air conditioner.

Make Your Ductless Heat Pump/Mini Split System More Efficient in Colder Weather

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Many New Englanders are investing in ductless heat pump or mini split systems to replace their fossil fuel burning systems for heating and cooling. These systems are less costly than oil and gas furnaces and other climate control systems and are easy to install. They also use less energy, relying mainly on electrical power, which can save you money compared to other systems.

Despite all their benefits, ductless heat pump and mini split systems can struggle at colder temperatures (below 20 degrees) to keep the home warm if it is not insulated.

To function at an optimal level of efficiency and keep a home toasty warm no matter how cold it is, ductless heat pump and mini split systems should be installed in a well-insulated home.

The importance of a well-insulated home for your ductless system

A “Hot Roof,” which is the insulation of all the walls and the roof of your attic, can make a TREMENDOUS difference with attaining heating and cooling efficiency, regardless of whether you have a ductless heat pump/mini split system or a traditional oil or gas furnace or other HVAC system.


With a Hot Roof installed, you can:

  • Better retain the heat or AC in your home, achieving greater comfort;
  • Use much less energy;
  • Allow your ductless heat pump/mini split system to not have to work as hard or as often, extending its life; and
  • Save significantly on your energy bills ⎯ potentially 50% in cost savings!

Insulation and duct work in an attic room.

Cool Fact:

If installed properly, insulation lasts the life of your home. The upfront investment may be 5 figures but you get a ROI in 5-6 years due to energy savings that will continue for years to come.

Hot Tip:

If you have an HVAC system (for heating or cooling) in your attic, it is important to keep the unit in “conditioned” space (the insulated area) to allow it to heat or cool more efficiently and maintain consistent warmth or cooling.

See how we can insulate your home with a “hot roof” installation, making it more comfortable and helping you save on your energy costs.