ComfortCostGuide

State cost guide

New Hampshire: HVAC Replacement Cost Calculator

Replacing an HVAC system in New Hampshire typically runs $3,500 to $13,000 installed, depending on what you put in. A gas furnace alone lands between $3,500 and $7,000, while a full central AC and furnace pairing runs $7,500 to $13,000, and a heat pump falls between $6,000 and $12,000. New Hampshire labor runs about 10% above the national baseline, with HVAC technicians earning an average of $34.37 per hour.

Worked example

Take a 2,100 sq ft two-story home outside Concord with existing ductwork and a 20-year-old gas furnace paired with an aging condenser. Replacing both at once puts the job in the $7,500 to $13,000 range, and because the ducts are already in place and sized, a mid-efficiency matched system would land closer to $9,000 to $10,500. Pushing toward the $13,000 end usually means higher-efficiency equipment, duct repairs, or a difficult basement or attic install that adds labor hours at New Hampshire's above-average rates.

Frequently asked questions

How much does a heat pump cost to install in New Hampshire?

Heat pump installations in New Hampshire generally run $6,000 to $12,000 installed. The spread reflects equipment capacity and cold-climate performance ratings, which matter in New Hampshire's climate zone 6 winters, plus any electrical or ductwork changes the install requires.

Is a ductless mini split cheaper than central air in New Hampshire?

It can be. Ductless mini splits run $3,500 to $10,000 in New Hampshire versus $4,000 to $7,500 for central AC, so a single-zone mini split is often the lower-cost option. Multi-zone systems covering several rooms climb toward the top of that range and can exceed a basic central AC install.

Why does HVAC installation cost more in New Hampshire than the national average?

Labor in New Hampshire runs roughly 10% above the national baseline, with HVAC technicians averaging $34.37 per hour. Since labor is a large share of any replacement job, that premium shows up across every system type, from a $3,500 furnace swap to a $13,000 full system replacement.

Should I replace my furnace and AC at the same time?

If both units are near end of life, doing them together usually costs less than two separate jobs because you pay one round of labor and setup. A combined AC and furnace replacement runs $7,500 to $13,000 in New Hampshire, compared with $3,500 to $7,000 for a furnace alone and $4,000 to $7,500 for AC alone.

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