Boiler replacement cost
Replacing a home boiler costs $3,200 to $9,000 installed, about $6,100 on average. The boiler itself is $1,400 to $6,500, plus $1,200 to $3,200 for labor and fittings. High-efficiency condensing boilers cost $4,000 to $10,000.
Quick answer
$3,200 – $9,000installed
Most boiler replacements cost $3,200 to $9,000. Simple electric units start near $1,500; large high-efficiency or combi boilers with venting changes reach $12,000.
Cost by fuel
| Fuel | Unit | Installed |
|---|---|---|
| Natural gas | $1,400 – $5,600 | $4,000 – $9,000 |
| Propane | $1,800 – $4,000 | $2,800 – $7,500 |
| Oil | $1,700 – $6,500 | $3,300 – $9,000 |
| Electric | $1,000 – $6,000 | $1,800 – $8,000 |
| Wood | $5,000 – $13,000 | $7,000 – $16,000 |
- Boiler$1,400–$6,50059%
- Labor and fitting$1,200–$3,20033%
- Removal and permit$250–$7508%
Share of a typical project, using the middle of each range.
Cost by boiler type
| Type | Unit | Installed |
|---|---|---|
| Conventional (standard) | $1,200 – $5,000 | $2,200 – $7,000 |
| Combi (heat + hot water) | $1,700 – $3,500 | $6,000 – $10,000 |
| High-efficiency condensing | $1,900 – $7,000 | $4,000 – $10,000 |
A combi boiler heats the home and supplies on-demand hot water, removing the need for a separate water heater.
Cost by home size
| Home size (sq ft) | Installed |
|---|---|
| 1,200 – 2,000 | $2,200 – $5,700 |
| 2,000 – 2,800 | $2,400 – $6,200 |
| 2,800 – 3,600 | $3,000 – $7,100 |
| 3,600 – 4,000 | $3,200 – $7,300 |
Cost by brand
| Brand | Installed |
|---|---|
| Utica | $2,400 – $10,600 |
| Buderus | $2,900 – $7,600 |
| Burnham | $2,900 – $8,700 |
| Lennox | $2,900 – $9,700 |
| Crown | $3,000 – $8,200 |
| Bosch | $3,100 – $7,400 |
| Navien | $3,200 – $8,200 |
| Peerless | $3,200 – $9,200 |
How to get a fair quote
- Get at least three written quotes that list the brand, model number, size (tons or BTU) and efficiency rating.
- Ask whether the price includes permits, removal of the old unit, refrigerant, a new thermostat and any duct or electrical work.
- Ask for a load calculation (Manual J) instead of matching the old unit's size by default.
- Compare labor warranties (1 to 10 years) as well as the manufacturer's parts warranty, and register the equipment.
- Schedule non-urgent work in spring or fall, when contractors are less busy and more willing to discount.
Frequently asked questions
How much does a new boiler cost?
About $3,200 to $9,000 installed, with an average near $6,100.
How long do boilers last?
Cast-iron boilers often last 20 to 35 years; high-efficiency condensing boilers about 15 to 20 years with annual service.
Is a boiler or furnace cheaper?
A furnace is usually cheaper to install ($3,500 to $7,500), but if your home already has radiators or baseboard, replacing the boiler avoids the cost of adding ducts.
Sources
Prices are national averages and typical ranges from published cost data. Your price depends on your home, region, equipment and contractor, so get several written quotes. Heat & Air Costs is not an HVAC contractor; read our disclaimer.