55 Mountain View Ave, Santa Rosa CA 95407 | 24/7 Emergency Service
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Water Heater Repair & Replacement — Santa Rosa CA

No hot water? We diagnose and fix — or replace — same day. All brands, tank and tankless.

Fast Water Heater Service in Sonoma County

A failed water heater affects your entire household. Action Plumbing carries common water heater parts and units on our trucks so most repairs — and many full replacements — happen on the same day you call.

We service all brands and all types: standard tank, high-efficiency tank, tankless/on-demand, and heat pump water heaters. Our technicians will diagnose the issue and give you honest advice about whether repair or replacement is the better investment.

Water Heater Problems We Fix

New Water Heater Installation

When replacement is the right call, we help you choose the best unit for your household size, energy goals, and budget. We install and haul away the old unit — fully permitted and code-compliant.

Want to upgrade to tankless? We handle that too, including any necessary gas line or venting upgrades.

Water Heater Costs in Santa Rosa CA

Service Call / Diagnosis$75 – $125
Thermostat / Element Replacement$150 – $350
Anode Rod Replacement$150 – $250
New 40–50 Gal Tank (installed)$900 – $1,800
New Tankless Unit (installed)$1,500 – $3,500+

Free estimates on replacement. Parts carry manufacturer warranty. Labor warranted.

Frequently Asked Questions

How long do water heaters last?
Tank water heaters typically last 8–12 years. Tankless units last 15–20+ years with proper maintenance. If your unit is over 10 years old and needs a major repair, replacement is often more economical.
What are signs my water heater is failing?
Warning signs include no hot water, lukewarm water, rusty or discolored water, popping or rumbling sounds (sediment buildup), water pooling around the base, and the unit running constantly.
Can you repair my water heater same-day?
In most cases, yes. We stock common parts for major brands on our trucks. Same-day replacement is also available if your unit is beyond repair.
What is the average cost to replace a water heater in Santa Rosa?
A standard 40–50 gallon tank water heater installed typically runs $900–$1,800 depending on the unit. Tankless replacement ranges from $1,500–$3,500+. We provide free estimates.
Should I repair or replace my water heater?
As a rule of thumb: if the repair cost exceeds 50% of a new unit’s cost and the unit is over 8 years old, replacement is usually better value. We’ll give you an honest assessment.
Do you service all water heater brands?
Yes. We service and install all major brands including Rheem, Bradford White, A.O. Smith, Navien, Noritz, Rinnai, and others.

No Hot Water? Call Us Now

Same-day water heater repair and replacement throughout Sonoma County.

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