Boiler Replacement Cost in Concord, New Hampshire

Concord Weather and HVAC Load

Concord logs 6,980 heating degree days and 528 cooling degree days in a normal year, based on the closest NOAA weather station. Heating is the bigger job here, and furnaces and heat pumps in Concord put in far more hours than the air conditioner. On average, Concord gets 165 freezing nights and 14 days above 90°F per year. Snowfall averages about 68 inches. For a 2,000 sq ft house, this climate points to a heating load somewhere near 70,000 BTU/h. Treat that as a starting number. A Manual J calculation will move it up or down based on insulation and windows.

Concord Housing Stock

Census figures put the median build year in Concord at 1970, so a typical house here has about 56 years on it. A lot of these homes are on their second or third system by now. The ductwork is usually original, and leaky joints are common. Owners live in 57.4% of occupied homes, roughly 10,000 households. With a median household income of $83,701 and a median home value of $323,700, local labor rates come out above the national middle in our model.

Between 2020 and 2025, NOAA's Storm Events Database logged 14 hail days and 24 days with damaging thunderstorm winds in Merrimack County. The largest hail reported was 1.5 inches across. Hail flattens the thin aluminum fins on condenser coils and cuts airflow. After a big storm, take a look at the outdoor unit; homeowners insurance often covers the damage. In Concord, 18.5% of residents are 65 or older. For older adults, a house with no heat in January or no AC during a heat wave is a medical risk. Mention it when you call, since many companies put those calls first.

When Replacement Makes Sense

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

What Moves the Price

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

We raised the national figures about 25% for Concord using local income, home values and the equipment size this climate needs. Real bids can still come in outside the range, so collect three written quotes.

What the Quote Should Cover

• Flushing and refilling the system
• The new boiler and the piping around it
• Startup and safety tests
• Venting and fuel hookups
• Removing the old boiler

New Hampshire Permits, Efficiency Rules and Rebates

New Hampshire falls in the DOE's North region. New split central air conditioners must meet at least 13.4 SEER2, and heat pumps sold anywhere in the U.S. need 14.3 SEER2 and 7.5 HSPF2. Expect the contractor to pull a mechanical permit for a replacement job in Concord. If a bidder suggests skipping it, move on. Also ask for a New Hampshire license or registration number and proof of insurance. The federal 25C tax credit ended for equipment installed after December 31, 2025, so incentives now come mostly from utilities and state programs. Check your electric and gas utility's rebate page before you pick equipment.

Before You Hire

• Ask your gas or oil company about rebates on condensing boilers.
• Ask for a heat-loss calculation. A lot of old boilers are much bigger than the house needs.
• For a steam system, hire a contractor who works on steam regularly.

Boiler Replacement Questions from Concord Homeowners

More HVAC Prices in Concord

• Furnace Replacement in Concord
• Furnace Repair in Concord
• AC Installation in Concord
• AC Repair in Concord
• Heat Pump Installation in Concord
• Heat Pump Repair in Concord
• HVAC System Replacement in Concord
• Ductless Mini-Split Installation in Concord
• Emergency HVAC Repair in Concord
• HVAC Tune-Up & Maintenance in Concord
• Air Duct Cleaning in Concord

Boiler Replacement Near Concord

• Manchester $6,700 to $15,300
• Nashua $7,100 to $16,100
• Dover $7,300 to $16,600
• Rochester $6,500 to $14,800