Are Heat Pumps Worth It in Vermont? An Honest Answer for -20°F Winters

The honest short answer

Yes for most homes, not for every home. In Bennington and Rutland counties most households heat with delivered fuels because there is little or no natural gas. That is where a heat pump changes the math the most, since you are replacing an expensive, volatile fuel with electricity that is moving heat rather than burning it.

It is a weaker case when the house loses heat so fast that no system would be efficient, or when your current heating bill is already small. We would rather tell you that at the estimate than sell you a system that disappoints you.

The rest of this page walks through the reasons on both sides so you can judge your own house. For the numbers on your actual fuel, use the Heating Cost Calculator, which takes about two minutes.

Why Vermont is a strong market for heat pumps

• No natural gas in most of our Vermont area. Homes burn oil, propane, kerosene or wood, or run electric baseboard. All of those cost more per unit of heat than a heat pump in typical cases.
• Delivered-fuel price swings. You pay what the market charges the week you fill the tank.
• Utility and state programs. Efficiency Vermont and Green Mountain Power (GMP) run heat pump programs. We do not quote dollar amounts because programs change each year; we confirm exactly what you qualify for at the free estimate and handle the entire rebate application. Rebates are expected to shrink or end in 2027.
• Cooling. Summers include humid, 85 to 90°F stretches. One system heats and cools.
• Wood is hard work. A heat pump can carry the load while you keep the stove for ambiance or outages.

Typical savings are estimates: about $950 per year off oil and about $855 off propane. A 2,000 square foot Upstate home runs a Mitsubishi system for roughly $900 to $1,600 per heating season versus $2,000 to $3,500 or more for oil.

But does it work at -20°F?

Standard mini splits struggle in deep cold. Mitsubishi Hyper-Heat is built for it: 100% Capacity to -13°F and it operates down to -35°F. Vermont winters regularly reach -10°F to -20°F, and design temperatures run around -5°F to -15°F depending on elevation. A properly sized Hyper-Heat system holds the house through those nights.

"Properly sized" is the key phrase. We perform a Manual J load calculation to size each zone for your house, and we commission the system to Mitsubishi spec. A unit chosen by square footage alone can run flat-out on the coldest night and still fall short.

Output does drop gradually below -13°F, which is why some homes keep a backup source, a wood stove or an existing boiler, for the rare extreme night or a power outage. A backup is a comfort choice, not an admission that the heat pump fails. Read more about Hyper-Heat outdoor units.

Weatherization first, or at the same time

A heat pump moves heat efficiently. It cannot make a leaky house hold that heat. If your attic has little insulation, your rim joists are open and your windows rattle, you will spend money warming the outdoors.

Good sequencing:

1. Seal the obvious air leaks and add attic insulation.
2. Get a load calculation, so equipment matches the improved house.
3. Install the heat pump sized for the tighter house.

Weatherization can shrink the size of the system you need, which lowers the installed cost too. Ask us at the estimate whether any program support applies to the weatherization work in your area. Our Home Comfort Diagnostic helps you spot where a house is losing comfort.

When a heat pump is NOT worth it

We would be doing you a disservice not to say this plainly.

• A very leaky, uninsulated farmhouse with no plans for weatherization. The system will work harder than it should, and bills will disappoint.
• A very small heating bill. If you burn a modest amount of propane in a small, tight home, the savings may not justify the investment on cost alone.
• Cheap firewood and you enjoy splitting it. If wood is truly your free fuel and you want it, keep going.
• A home you will leave within a year or two with no resale benefit.

Even in these cases, a single zone for cooling or shoulder-season comfort may make sense. The calculator and the free estimate will show you the numbers rather than a pitch. For the propane comparison specifically, see heat pump vs propane.

What it looks like by housing type

These are typical situations, not named customers.

Older farmhouse in Rutland County

Often oil or wood, with a mix of insulated and uninsulated rooms. Best approach: weatherize the worst areas, then put zones in the main living spaces and keep the existing system as backup. See heat pumps in Rutland.

Ranch or newer build in Bennington County

Typically tighter and easier to heat. A multi-zone system, or ducted air handler where ductwork exists, can often carry the whole home. See Bennington installations.

Small chalet or camp

One or two zones, remote monitoring through the Mitsubishi Comfort App, and a backup for the coldest nights.

Cost, financing and next steps

Mitsubishi single-zone systems are $10,000 to $15,000 installed; whole-home multi-zone systems start at $15,000, larger homes costing more. Financing is 18 months interest-free, or up to 11 years at 9.99% APR, with rebates applied first.

Every install carries our 12-year parts and labor warranty through the Elite Care Plan (spring and fall maintenance required) and a 180-Day Comfort Guarantee. Compare costs on our oil conversion page and see what you may qualify for on the rebates and savings page.

Start with the Heating Cost Calculator. Finish it before your estimate appointment and the savings code takes $250 off.

Frequently asked questions