Cost Guides · Replacement & installation

How Much Does a New Boiler Cost?

A typical gas boiler installed lands between $4,500 and $10,000. Condensing and combi units run higher — and repay it in gas.

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The short answer

$4,500–$10,000

Installed price for a like-for-like swap on an existing hydronic system. Piping corrections, venting changes and system flushes are itemized in the quote, never discovered after.

Typical industry ranges for Western Washington — not a quote. Your exact price comes upfront, before any work starts, and you approve it first.

What moves the price

1

Standard vs condensing

Condensing boilers squeeze 90%+ from every therm but need PVC venting and a condensate drain — real install work that pays back in fuel.

2

Combi or heat-only

A combi adds on-demand hot water in one box — great fit for smaller homes, priced above heat-only.

3

System condition

A new boiler on sludgy old piping inherits every problem. Flushing and filtration protect the investment — quoted openly.

4

Venting and location

Chimney-vented to wall-vented conversions, tight closets, long runs — the install environment moves the labor.

Quiet, even heat — priced exactly.

Get an exact installed price for your system, options explained in plain English.

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Typical ranges at a glance

Standard-efficiency gas boiler$4,500–$8,000
High-efficiency condensing$6,000–$10,000
Combi boiler (heat + hot water)$6,500–$12,000
System flush / filtration add-on$300–$900

Typical industry ranges for Western Washington — not a quote. Your exact price comes upfront, before any work starts, and you approve it first.

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Why homeowners hand it to us

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Quick answers

Is a condensing boiler worth it?

Over a Western Washington heating season, usually — 90%+ efficiency vs ~80% legacy units is real money every winter, and rebates often favor high-efficiency. We run your numbers at the quote.

Should I switch to a furnace or heat pump instead?

If your home has radiators or in-floor heat, keeping hydronic is usually right — that gentle heat is why people love boilers. Full system conversions are possible; we’ll give you an honest read on whether it makes sense.

How long does a boiler last?

15–25 years with maintenance. If yours is in that window and needing major parts, replacement math usually wins — we show both numbers.

Ranges are for websites. Quotes are for you.

Book in 60 seconds — a tech reaches out within 1 business hour and your exact price comes before any work.

Get My Upfront Quote

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