Your boiler repair specialists in Sterling, VA. Free assessments, certified technicians, and guaranteed results.
KIC Refrigeration provides expert boiler repair in Sterling, VA, addressing hydronic system failures including leaking heat exchangers, failing circulator pumps, malfunctioning zone valves, and ignition faults across gas, oil, and electric boiler systems. Our technicians perform combustion analysis and verify safe operation before returning your system to service.
Sterling homeowners and businesses count on reliable boiler repair to maintain comfort and protect indoor air quality. Serving a community of 32,042 across Virginia, KIC Refrigeration brings the experience and crew depth to handle boiler repair projects of any scale. We begin every job with an honest evaluation and a clear, written estimate.
Our boiler repair technicians in Sterling, VA are NATE-certified, EPA 608 licensed, and equipped with advanced diagnostic tools. From the initial inspection through final commissioning, we maintain open communication and hold ourselves to the highest standards. That is how KIC Refrigeration has earned the trust of homeowners across Virginia.
A clear, step-by-step approach to every boiler repair project we take on.
Our Sterling technician begins with a comprehensive safety inspection — testing the pressure relief valve, low-water cutoff, high-limit control, gas valve operation, and flue draft. We check boiler pressure, inspect the expansion tank, and look for signs of corrosion, leaks, and scale buildup.
KIC Refrigeration diagnoses boiler problems in Sterling, VA using combustion analysis data. We measure flue gas CO below 100 PPM air-free, verify oxygen levels between 4 and 8 percent, check that stack temperature is within 100 to 200 degrees of supply water temperature, and calculate AFUE to identify efficiency losses.
We replace the failed component — circulator pump, expansion tank, zone valve, aquastat, gas valve, ignitor, or heat exchanger section — using parts rated for your boiler make, model, and BTU capacity.
Our Sterling crew pressurizes the boiler system to 15 to 20 PSI, inspects every fitting and valve for leaks, bleeds air from all zone circuits, and runs the boiler through a full cycle — verifying ignition, flame signal, circulator operation, and temperature rise to confirm the repair.
Common questions about boiler repair costs, timelines, and what to expect.
Boiler repair in Sterling 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 Sterling property so you can make an informed decision.
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 Sterling quickly using combustion analyzers, pressure testing, and electrical diagnostics to identify the exact failure.
Yes. KIC Refrigeration provides 24/7 emergency boiler repair throughout Sterling and surrounding Virginia communities every day of the year. A failed boiler in cold weather is a serious emergency — indoor temperatures can drop rapidly, putting water pipes at risk of freezing and bursting within hours. Frozen pipes cause thousands of dollars in water damage when they thaw. Our emergency crews are dispatched with the most commonly needed boiler parts — igniters, thermocouples, circulator pumps, zone valves, and control modules — to restore heat at your Sterling property as quickly as possible. Call our emergency line and we will have a technician on the way immediately.
Yes. KIC Refrigeration services all types of boilers in Sterling including combination boilers that provide both space heating and domestic hot water from a single unit. We work on combi boilers from Navien, Rinnai, Viessmann, Weil-McLain, Burnham, Buderus, Baxi, and other manufacturers. Common combi boiler repairs include diverter valve replacement, plate heat exchanger descaling or replacement, flow sensor calibration, expansion vessel recharging, and ignition module troubleshooting. Our technicians carry diagnostic tools specific to combi boiler systems and understand the interaction between the heating and hot water circuits that makes these units unique to diagnose.
Real feedback from customers across the country about the quality of our work.
"Called about a weird smell from the furnace. They came out, found a cracked heat exchanger, and explained the safety concern clearly. Grateful they caught it."
"Boiler kept cycling on and off. Technician found a faulty thermocouple and replaced it on the spot. No nonsense, no upselling. Just good honest work."
"KIC Refrigeration did a full HVAC inspection before we closed on our new house. Very detailed report and the inspector answered all my questions patiently."