Boiler Replacement Cost in Connecticut

Boiler replacement in Connecticut costs $6,500 to $14,900 in 2026, though city-to-city prices vary quite a bit. Heating drives most HVAC spending in Connecticut: its larger communities average 5,653 heating and 799 cooling degree days a year.

Boiler Replacement Prices in Connecticut Cities

City	Estimate	Heating / cooling degree days
Bridgeport	$5,600 to $12,700	5,140 / 955
Stamford	$7,800 to $17,700	5,357 / 857
New Haven	$5,600 to $12,700	5,454 / 764
Hartford	$5,300 to $12,200	5,619 / 914
Waterbury	$5,400 to $12,400	5,892 / 718

From 2020 through 2025, NOAA recorded 101 winter storm and ice events, 54 heat events, 16 extreme cold events and 58 hail reports in Connecticut. 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 Connecticut

Get Free Boiler Replacement Quotes

Tell us where you are and up to three licensed local pros will get in touch. You don't have to hire any of them.