Cost Guides · Plumbing & Heating
Boiler Installation Cost in 2026: Equipment Prices by Size
Posted equipment prices for gas boilers by BTU input and a combi unit, plus installer wages that ride on top.
What is the boiler installation cost right now?
Boiler installation cost starts with the box itself, and two suppliers each post a firm number on it. A 105,000 BTU input cast iron gas boiler prices at $2,340.95 to $2,382.09 across two independent listings. A 150,000 BTU Mini-Therm model runs $2,645.95 to $2,680.39.
Every installer adds labor, venting, and a permit on top. None prints one flat installed total for the whole swap.
Boiler installation cost by size
BTU input drives the equipment price. A combi unit that adds domestic hot water changes the math again. These three posted prices come from five independent suppliers.
| Boiler | Equipment price | Captured |
|---|---|---|
| Crown Aruba, 105,000 BTU input, cast iron, chimney vent | $2,340.95 to $2,382.09 | Sept 25, 2026 |
| Laars Mini-Therm JX-150, 150,000 BTU input, 84% AFUE, chimney vent w/ pump | $2,645.95 to $2,680.39 | Sept 25, 2026 |
| Noritz NRCB180 combi, 180,000 Btuh DHW, 100,000 Btuh space heating, direct vent | $3,004.98 to $3,361.00 | Sept 25, 2026 |
Honest note: only these five suppliers posted a fixed price on these named boilers when we captured them on Sept 25, 2026.
Why does a combi unit change the boiler installation cost?
A combi boiler folds a hot water heat exchanger into the box that heats the home, so one unit replaces a boiler and a separate water heater. That is why the posted combi price sits above the 105,000 BTU heat-only unit, even though its space heating input tops out lower, at 100,000 BTU. You are pricing two jobs in one box.
Turn a mechanical room photo into an itemized estimate, free →
What does labor cost on top of the equipment?
Plumbers, pipefitters, and steamfitters earn a $34.70 mean and $30.67 median hourly wage nationally. That covers 465,840 workers (BLS OEWS, May 2025), and those are wages paid, not a rate billed. Burden, drive time, disposal, permits, and margin ride on top before it becomes a labor line.
| Wage measure | Hourly figure | Source |
|---|---|---|
| Mean wage | $34.70 | BLS OEWS, May 2025 |
| Median wage | $30.67 | BLS OEWS, May 2025 |
| Workers counted | 465,840 | BLS OEWS, May 2025 |
No live publisher bundles this wage into one installed total. Your labor line depends on the local rate, venting changes, and how many hours the swap takes.
How to price a boiler installation
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Get an actual heat loss calculation
A room-by-room heat loss calculation sets the BTU input you need, not a square footage guess. Undersizing runs constantly and never catches up. Oversizing short-cycles and wastes fuel.
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Price the equipment by BTU input and unit type
Use the size table above as a floor. Then decide heat-only or combi, and ask your supplier to name the exact model and AFUE rating on the quote.
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Add labor, permit, and venting as separate lines
The equipment price covers material only. Labor, the mechanical permit, and disposal of the old boiler go on as their own lines. So does any venting change, like a chimney liner or a power-vent conversion.
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Get it in writing before the old boiler comes out
A written, itemized quote protects both sides. It matters most once the old boiler is disconnected. Send it before the homeowner commits to an install date.
SimplyWise Cost Estimator for boiler installation cost
SimplyWise Cost Estimator turns a mechanical room photo into an itemized estimate in about 6 seconds. Equipment, labor, and fee lines stay editable on one quote, and you send a branded quote the client signs to approve. It is $29.99/mo or $239.99/yr, about $20/mo on annual, with a 7-day free trial.
Keep reading
- HVAC Contractor Pricing Guide: how to structure the bid.
- Mini Split Installation Cost: what a ductless system runs by zone.
- Contractor Hourly Labor Rates by Trade: what to bill on top of the wage above.
Sources
Equipment pricing
- PexUniverse, Crown Aruba AWR105-BNT3SU1, 105,000 BTU, $2,340.95, captured 2026-09-25.
- 24hr.supply, Crown Boiler AWR105BNT3SU1, 105K BTU, $2,382.09, captured 2026-09-25.
- PexUniverse, Laars JX150NLXU1 Mini-Therm, 150,000 BTU input, $2,645.95, captured 2026-09-25.
- US Supply, Mini-Therm JX-150, 150,000 BTU input, $2,680.39, captured 2026-09-25.
- Heat and Cool, Noritz NRCB180-NG combi boiler, $3,361.00, captured 2026-09-25.
- Plumbing Deals, Noritz NRCB180DV-NG combi boiler, $3,004.98, captured 2026-09-25.
Labor wages
- BLS OEWS, May 2025, occupation 47-2152, Plumbers, Pipefitters, and Steamfitters, verified 2026-09-25.
Product
- SimplyWise Cost Estimator, App Store, 4.8 rating, verified 2026-09-25.
Frequently asked questions about boiler installation cost
The price
How much does boiler installation cost?
Equipment alone runs $2,340.95 to $2,382.09 for a 105,000 BTU cast iron boiler. A 150,000 BTU Mini-Therm model runs $2,645.95 to $2,680.39, posted by independent suppliers. Labor, venting, and a permit ride on top, and no live publisher prints one flat installed total for the whole swap.
Why does a combi boiler cost more than a heat-only unit?
A combi unit folds a hot water heat exchanger into the same box that heats the home. It replaces a boiler and a separate water heater at once. That is why the posted combi price, $3,004.98 to $3,361.00, sits above a similarly sized heat-only boiler, even though its space heating input is lower.
Sizing and labor
What size boiler do I need?
BTU input comes from a room-by-room heat loss calculation, not a flat square-footage rule. Insulation, window count, and climate all move the number. Two similarly sized homes can need different sized boilers.
What do plumbers and pipefitters earn on the labor line?
Plumbers, pipefitters, and steamfitters earn a $34.70 mean and $30.67 median hourly wage nationally (BLS, May 2025). That is wages paid, not a rate billed. Overhead, disposal, and margin add to it on your quote.
Can I measure the job with my phone camera instead of a tape measure?
Snap the mechanical room and existing venting. SimplyWise Cost Estimator turns that job-site photo into an itemized estimate in about 6 seconds. On a Pro iPhone, the room scan captures interior measurements with LiDAR, and every line stays editable before you send the quote.
Does SimplyWise Cost Estimator price a boiler installation?
It builds material, labor, and fee line items, each with unit, quantity, and price per unit. Enter the equipment price and your labor rate, then send a branded quote the client signs to approve. Pricing is $29.99/mo or $239.99/yr, with a 7-day free trial.
Turn a boiler job into a bid that holds margin.
Snap a photo and get an itemized estimate with editable lines. Send a branded quote before the old boiler comes out. Free to try, then $29.99/mo or $239.99/yr after a 7-day trial.