How long does installation take?

Ductless systems: 1–3 days. Ducted whole-home systems: typically 2–4 days depending on ductwork condition.

Do heat pumps also cool?

Yes — every heat pump is also a high-efficiency air conditioner. One system, both jobs.

Do heat pumps work in New Hampshire winters?

Yes. Modern cold-climate heat pumps — like the Mitsubishi Hyper-Heat systems we install — deliver full heating capacity at 5°F and keep working below -13°F. They're now the primary heat source in thousands of NH homes. For homes with an existing furnace or boiler, we often set up a dual-fuel arrangement where the heat pump handles most of the season and the backup covers the coldest snaps.

What rebates are available for heat pumps in NH in 2026?

NHSaves currently offers $250 per ton for qualifying cold-climate heat pumps replacing oil, gas, or propane heat, and up to $1,250 per ton when replacing electric resistance heat (that tier requires utility pre-approval before installation). Systems must use newer refrigerants (R-32 or R-454B) to qualify, and the federal 25C tax credit ended December 31, 2025. We handle rebate paperwork with your quote.

Heat pump vs. furnace — which is right for my home?

If you heat with electric baseboard, oil, or propane, a cold-climate heat pump usually cuts your heating costs substantially and adds air conditioning in the same unit. If you have cheap natural gas, a high-efficiency furnace may still win on pure operating cost, and a dual-fuel setup often makes the most sense. We'll run the numbers for your actual home rather than giving a one-size answer.

What size heat pump do I need?

Sizing depends on square footage, insulation, air sealing, window quality, and layout — not just square feet. As a very rough NH guide, most homes need 25–35 BTU per square foot, but an oversized unit short-cycles and an undersized one runs constantly. We do a room-by-room load assessment on every quote so the system is sized right the first time.

How long does a mini split installation take?

Most single-zone installations are done in one day. Multi-zone systems typically take 2–3 days depending on the number of indoor heads and electrical work needed. You'll have heating/cooling in the finished zones the same day they're installed.

How often should my HVAC system be serviced?

Once a year for most systems — ideally spring for AC/heat pumps and fall for heating equipment. Regular maintenance (clean coils, correct refrigerant charge, fresh filters) keeps efficiency up, prevents mid-season breakdowns, and protects your manufacturer warranty, which often requires documented annual service.

Why is my AC running but not cooling?

The most common causes are a clogged air filter, a refrigerant leak, a frozen evaporator coil, or a failing capacitor on the outdoor unit. Check the filter first. If airflow is fine and it's still blowing warm, shut the system off to prevent compressor damage and call us at 603-475-9027 — running it in that state makes repairs more expensive.

What areas do you serve?

We're based in Kingston, NH and serve all of New Hampshire, southern Maine, Vermont, and Massachusetts. Most of our work is in Southern NH — Kingston, Exeter, Epping, Derry, Londonderry, Salem, and surrounding towns.

Exterior of a multi-story house with light green siding.

Heat Pump Installation in Southern New Hampshire

Heat pumps are the most cost-effective way to heat and cool most New Hampshire homes today — one system that replaces both your AC and much of your heating load, at 2–3x the efficiency of electric baseboard or oil. TJM Climate Control installs cold-climate heat pumps built for NH winters across Southern NH, southern Maine, Vermont, and Massachusetts.

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About Us

What we install

Why TJM

We install Mitsubishi Hyper-Heat and other cold-climate rated systems that deliver full heating output at 5°F and continue operating below -13°F. Options include ducted heat pumps (using your existing ductwork), ductless mini splits, and dual-fuel setups that pair a heat pump with your existing furnace or boiler for the coldest stretches.

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Heat Pump Installation in Southern New Hampshire

About Us

What we install

Why TJM

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Do heat pumps also cool?

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