Professional boiler repair services for homes and businesses in San Martin and surrounding California communities.
Boiler systems serving San Martin, CA homes require specialized knowledge of water chemistry, expansion tank pressure, flue gas analysis, and aquastat sequencing. KIC Refrigeration delivers professional boiler repair that addresses kettling, air-bound radiators, leaking seals, and control board failures with the expertise your hydronic system demands.
Whether you own a single-family home or manage a commercial property in San Martin, professional boiler repair is essential for maintaining safe, efficient indoor climate control. KIC Refrigeration has completed hundreds of boiler repair projects across California, and our San Martin customers benefit from that depth of experience, our fully stocked service vehicles, and our ability to respond the same day for urgent situations.
We understand that boiler repair can feel like a major decision. That is why KIC Refrigeration makes the process simple for San Martin property owners — free evaluations, transparent pricing, flexible scheduling, and a dedicated point of contact from diagnosis through completion. Your satisfaction is guaranteed.
How our NATE-certified technicians deliver quality boiler repair results from start to finish.
We inspect the boiler for visible damage, check the pressure gauge and temperature readings, test safety controls including the pressure relief valve and low-water cutoff, and verify the flue is drafting properly before diagnosing the fault.
At your San Martin property, our technician tests combustion efficiency with a calibrated analyzer. We measure CO parts per million, oxygen percentage in the flue, stack temperature, and calculate combustion efficiency. Readings outside manufacturer specs point directly to the failed component.
KIC Refrigeration repairs boilers in San Martin, CA with the correct parts and procedures. We match components to your specific boiler model and BTU input rating, torque all gas connections to spec, leak-test with gas detector soap, and verify the repair restores proper operation and efficiency.
After repair, we pressurize the system, check for leaks at every connection, purge air from the zone loops, verify the expansion tank pre-charge, and run the boiler through a full heating cycle to confirm proper operation and safety control function.
Transparent answers about boiler repair from our certified technicians.
Boiler repair in San Martin typically costs $200 to $700 for common component failures like thermocouples, aquastats, zone valves, circulator pumps, and expansion tanks. Ignition control module or gas valve replacement runs $300 to $800 depending on the boiler manufacturer. Heat exchanger replacement is the most expensive repair at $1,500 to $4,000, varying by boiler type — cast iron sectional, copper fin tube, or stainless steel condensing — and BTU input rating. KIC Refrigeration provides a detailed written estimate with itemized parts and labor costs before beginning any boiler repair at your San Martin property so you can make an informed decision.
Boiler pressure loss indicates a leak somewhere in the sealed system. The most common causes are a failed expansion tank bladder that allows air into the system, leaking zone valve packings, corroded pipe fittings or baseboard connections, a weeping pressure relief valve, or a pinhole leak in the heat exchanger itself. A healthy hydronic system holds 12 to 18 PSI when cold and rises to 18 to 25 PSI at operating temperature. If the pressure gauge drops below 10 PSI, the low-water cutoff should shut the burner down to prevent damage. KIC Refrigeration pressure-tests the system, inspects all fittings and valves, and locates the leak at your San Martin home so we can repair it permanently.
Most boiler repairs in San Martin take 1 to 3 hours during a single service visit. Circulator pump and zone valve replacements are typically completed in 1.5 to 2 hours including system draining and refilling. Aquastat and control board replacements take 1 to 2 hours. Gas valve replacement takes 1 to 2 hours plus a combustion analysis to verify proper operation. Heat exchanger replacement is the most time-intensive job at 4 to 8 hours depending on whether the boiler has cast iron sections or a sealed stainless steel exchanger. KIC Refrigeration provides an accurate time estimate before starting work at your San Martin property so you can plan accordingly.
Warning signs that your boiler needs professional attention include radiators or baseboard that heat unevenly or stay cold in certain zones, banging or kettling noises caused by scale buildup or air in the system, the pressure gauge reading below 12 PSI or above 25 PSI, visible water leaks at fittings, valves, or the boiler itself, a pilot light or electronic ignition that will not stay lit, error codes flashing on the control board, and a noticeable increase in gas bills without a change in thermostat settings. Any of these symptoms warrants a professional inspection. KIC Refrigeration diagnoses boiler problems in San Martin quickly using combustion analyzers, pressure testing, and electrical diagnostics to identify the exact failure.
Our reputation is built on certified technicians, honest pricing, and results that last.
"KIC Refrigeration replaced our old window units with a mini split system. Night and day difference in comfort and noise level. Wish we had done it sooner."
"AC repair was fast and fairly priced. The compressor was failing and they had the part on the truck. Done in about ninety minutes."
"Mini split repair was done right the first time. The outdoor unit had a refrigerant leak and they found it, fixed it, and recharged the system same day."