Boiler Replacement Cost in New Hampshire

Across New Hampshire, homeowners pay $7,000 to $15,900 for boiler replacement. Climate, labor rates and housing age all move the price. In New Hampshire's cities, the median home dates to about 1970.

Boiler Replacement Prices in New Hampshire Cities

City	Estimate	Heating / cooling degree days
Manchester	$6,700 to $15,300	6,906 / 537
Nashua	$7,100 to $16,100	6,592 / 704
Concord	$6,900 to $15,600	6,980 / 528
Dover	$7,300 to $16,600	6,919 / 410
Rochester	$6,500 to $14,800	6,789 / 506

From 2020 through 2025, NOAA recorded 300 winter storm and ice events, 7 heat events, 15 extreme cold events and 213 hail reports in New Hampshire. Those are the days when emergency HVAC calls pile up.

When Replacement Makes Sense

The boiler is 20 to 30 years old or more
Leaks, rust, or pressure that keeps dropping
Some radiators stay cold
Fuel bills keep going up
The pilot or ignition keeps failing

What Moves the Price

Condensing or non-condensing boiler
A combi boiler that also makes your hot water
Fuel type: gas, oil or propane
A new chimney liner or venting
Pumps, zone valves and the piping around the boiler

Common Questions

How long does a boiler last?

A cast-iron boiler can last 25 to 35 years. A modern condensing boiler usually lasts 15 to 20 with yearly service.

Can I replace a boiler with a heat pump?

Yes, with an air-to-water heat pump or a ductless system. The radiators may need upgrading, because heat pumps run cooler water than boilers.

Other HVAC Prices in New Hampshire

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