IN THIS GUIDE ▾
This page is for contractors pricing boiler replacement. It covers what customers expect to pay in 2026 ($3,500-$15,000, typically $7,500 for a standard gas boiler), what the boiler, venting and labor cost you by fuel type and efficiency, and the margin that leaves. Condensing boilers and oil-to-gas conversions carry the highest tickets and the most scope risk, so itemize them.
Boiler Replacement pricingby size and type.
Boiler costs vary by fuel type, efficiency, and whether you're converting from one fuel to another. Condensing boilers cost more upfront but provide significant energy savings.
The Equipment column is roughly what the customer sees on the equipment line; the Installation column is labor, materials and permits. Your cost sits below both. The gap between your cost and the Total column is the margin you have to work with.
Turn the numbers above into a quote you can send from the driveway.
Load your equipment cost, labor hours and rate, apply your markup, and EstimateKit produces the itemized PDF with good-better-best options. Not sure what margin to target? Run the job through the markup calculator first.
What moves the boiler replacement priceand your cost.
Each factor below changes what you can charge, what the job costs you, or both. Use the impact figures to explain price differences to customers and to decide which upgrades belong in your better and best options.
Higher AFUE ratings mean more fuel converts to heat. Condensing boilers (95-98% AFUE) cost more but save significantly on fuel.
Natural gas is most common and affordable. Oil boilers cost more to install and operate. Electric boilers are expensive to run.
Larger homes need higher BTU boilers. Sizing is based on heat loss calculations for the home.
Hot water (hydronic) systems are most common. Steam boilers are found in older buildings and require specialized work.
Standard boilers use chimney venting. High-efficiency condensing boilers use PVC venting, which may require installation.
The condition of radiators, baseboards, or radiant tubing affects whether additional work is needed.
What boiler replacement sells forby region.
Labor rates, permitting and cost of living move the going rate. Price against your local market, not the national average.
High demand for boiler services in cold climates with older housing stock drives up prices.
New York · Boston · Chicago · Philadelphia · MinneapolisEstablished boiler markets with moderate labor rates.
Baltimore · Pittsburgh · Cleveland · Detroit · MilwaukeeLower labor rates and mix of heating systems reduce boiler replacement costs.
Indianapolis · Cincinnati · St. Louis · Kansas City · ColumbusEstimateKit is used by contractors in Boston, Chicago, New york, Philadelphia and every other market. See how it works for your area →
Add-on lines to includein the quote.
These are the items that get forgotten on a rushed quote and then eaten as unbilled cost. Put them on the estimate as separate lines so the customer sees them and you get paid for them.
How to price boiler replacementaccurately.
Customers compare 3-5 quotes on a job this size. The ones that win are rarely the cheapest; they are the clearest. Build your boiler replacement price from cost up, then present it so the customer can see what they are paying for:
Set your markup percentages once, pick the equipment and hours, and the itemized quote is ready to send in 10-15 minutes, with customer records and scheduling in the same place.
See how contractors quote boiler replacement in EstimateKit →Selling against DIYand lowball bids.
When a customer asks why they should not do it themselves or take the cheapest quote, these are the points to put in your proposal.
Payment and financingoptions to offer.
Offering a financing path raises close rates on larger tickets. These are the ways customers typically pay for boiler replacement; put the ones you support on the quote.
Straight answers you can reuse on the phone, in the proposal, or on your own website.
Boilers typically last 15-30 years, longer than forced-air furnaces. Cast iron boilers can last 25-40 years with proper maintenance.
If natural gas is available, conversion typically saves $500-$1,500 annually on fuel costs. The conversion cost ($7,000-$13,000) pays back in 5-10 years.
Condensing boilers capture heat from exhaust gases that standard boilers waste. They achieve 95-98% efficiency vs. 80-85% for standard boilers, saving 15-20% on fuel.