Comfort Systems USA Northwest, Inc., Woodinville, WA

Approvals

✓ On the City of Bellevue list Phone matches its Google profile

City of Bellevue backflow testing companies, as of February 19, 2025. Being on this list means the utility lets the company file backflow test reports in its water system; it is not a state license.

Ask for the certificate number of the tester who will do your test, and check that your own water utility accepts reports from this company.

Call (425) 883-9224 Visit website More testers in Washington

Price reports

What a backflow test costs in Woodinville

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Published prices nationwide

$29.99 to $100 per assembly

$0$25$50$75$100$125

Based on 14 published prices · Read Oct 2026 Prices testing businesses list on their own websites, from our cost guide. Listed prices, not what people paid.

Every published price, with its source: what a backflow test costs.

Failed test? Published repair, rebuild and replacement prices: what a backflow repair or replacement costs.

Where you will find Comfort Systems USA Northwest, Inc.

These are the city pages close enough for this business to appear on.

Woodinville, WA(under 1 mi)
Redmond, WA(6 mi)
Bellevue, WA(11 mi)
Seattle, WA(16 mi)
Issaquah, WA(16 mi)
Renton, WA(21 mi)
Tukwila, WA(21 mi)
Burien, WA(22 mi)

Other backflow testers nearby

Business	Services	Distance
Premier Mechanical & Electric, LLC	Backflow Testing	1 mi
Batgirl Backflow Testing, LLC	Backflow Testing	6 mi
Finishing Touches Landscape	Backflow Testing	6 mi
Nor-Tech Fire Protection	Backflow Testing	6 mi
Day & Nite Plumbing & Heating	Backflow Testing	7 mi
Dixon Backflow Testing	Backflow Testing	9 mi

Questions about Comfort Systems USA Northwest, Inc.

Is Comfort Systems USA Northwest, Inc. approved to test backflow assemblies?

Comfort Systems USA Northwest, Inc. is on the City of Bellevue list, as of February 19, 2025. That means the utility lets the company file backflow test reports in its system; it is not a state license. Ask for the tester's certificate number before the test.

What does Comfort Systems USA Northwest, Inc. do?

Their listing covers backflow testing. Call to confirm the service you need, because offerings change.

What areas does Comfort Systems USA Northwest, Inc. serve?

They are based in Woodinville, Washington, within driving distance of Woodinville, Redmond, Bellevue, Seattle, Issaquah. Service areas are set by the business, so confirm yours when you call.

How do I reach Comfort Systems USA Northwest, Inc.?

Call (425) 883-9224. Their website is linked on this page.

Compiled from public records and public business information. Not an endorsement. Check licensing before you hire.

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