A boiler replacement typically costs $7,938. You could spend anywhere between $4,290 and $10,070 for a boiler, with the following factors affecting price:
Size: larger boilers are more expensive.
Fuel type: The majority of boilers run on heating oil, natural gas, or propane, but some also use electricity or wood.
Brand: While most boilers are priced similarly regardless of the brand, some high-tech brands are more expensive.
Installation: Various fuel types have varying installation requirements. The price increases with labor intensity.
System type: Some systems are more complex than others due to the way boilers heat and store water, which also affects labor and installation costs.