Gas Boiler Repair & Installation in Cotati, CA
Boiler diagnosis and radiant heating repair for Cotati homes, with replacement only when repair no longer makes sense.
Boiler repair in Cotati begins with a question: what is actually failing? The hot water may run fine while the house stays cold, or one room may lag behind the rest. Those symptoms can come from the boiler, the circulator, a zone valve, a thermostat or the radiant tubing. We test each before recommending anything.
Radiant heating repair is part of that work. Floor and baseboard problems are often air, a failed pump or a stuck valve, and those are repairs, not replacements. When a boiler replacement is the right call, we explain why, price it with a free estimate and show how the new unit will connect to the heat you already have.
Cotati is in Sonoma County, so our Santa Rosa and Petaluma offices handle your call. We can also quote a boiler installation or boiler replacement, including a new Rinnai, Navien or Lochinvar unit, once we have seen your system. Either way you get a plain explanation first.
Diagnosis first, replacement second
Our rule is maintain, repair, replace. In Cotati that means we find the cause before we suggest a new boiler.
- We test the boiler, circulator, zone valves and thermostats separately, so a small fault is not mistaken for a failed boiler.
- If a repair is possible, we explain the repair first and replacement second.
- Replacement estimates are free and describe how the new boiler ties into your existing floor loops, radiators or baseboard.
- Cotati is served from our Santa Rosa and Petaluma offices by a family-owned contractor operating since 1986.
- Senior and veteran discounts apply to installs and repairs, and financing is available.
When the house is cold but the hot water works
- Taps run hot, yet the radiators, baseboards or floors stay cool.
- The boiler fires up, runs for a few minutes and shuts off before the house warms.
- A thermostat calls for heat and nothing happens in one zone.
- The pressure gauge keeps falling and you find damp spots near the boiler or pipes.
- You hear gurgling or knocking when the heat comes on.
- A pilot or ignition fault keeps the boiler from lighting.
Frequently Asked Questions
How much does boiler replacement cost?
The price depends on the boiler you choose, whether the vent and gas line can be reused, and what your radiators or floor loops need. That is why we look at the system first. Estimates on replacements are free, and financing is available. Senior and veteran discounts also apply.
Why do I have hot tap water but no heat?
The taps and the heating can run on separate equipment, or one appliance may handle both with different controls. A failed thermostat, circulator, zone valve or boiler fault can stop heating alone. We identify which system you have first, then trace the fault. Tell us what you see on the boiler display.
Is replacing a boiler better than repairing it?
Not always. If the fault is a part such as a circulator, valve, sensor or control, repair is often the sensible choice. Replacement makes sense when repairs keep returning, parts cannot be found or the boiler no longer suits the house. We explain what we see and let you decide. Replacement estimates are free.
Can you repair radiant heating without replacing the whole system?
Often, yes. Air in the loops, a failed circulator, a stuck zone valve or a faulty control are repairs. We find the cause before suggesting anything larger. If a leak is buried in a slab, we will explain what that means for repair options before any work starts.
Which boiler brands do you service?
We service Rinnai, Navien, Triangle Tube, HTP, NTI, Lochinvar, U.S. Boiler, Crown, Peerless and Laars, and John Owens is an authorized Rinnai dealer. Bring the model and serial number when you book, so we can check parts availability before the visit if possible.
Helpful Links
Boiler Manufacturers
Repair, maintenance, and replacement options for the boiler in your home.
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Proudly Serving Marin & Sonoma
From the Marin coast to Sonoma wine country, we bring honest plumbing, heating & cooling to homeowners across both counties — based locally since 1986.
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