Cast iron, condensing, combi, and atmospheric boilers. Every major brand. Most service calls finish in a single visit because we carry the parts on the truck — and we diagnose with combustion analysis, not guesswork.
25+ years in hydronics<60 min emergency response · SL ValleyAll major brands serviced2-yr warranty on work performed
When you need boiler repair — signs to watch for
If you're reading this, something probably isn't right. The fastest way to figure out what we're walking into is to run through the symptom checklist below. We'd rather you call us with "the boiler is doing X" than guess — most of these tell us within minutes what part likely failed.
No heat at allThe boiler isn't firing, or it's firing but no hot water is reaching the radiators or radiant zones.
Some zones coldOne or two rooms aren't heating while the rest of the house is fine. Usually a zone valve, actuator, or thermostat.
Pressure too high or lowGauge reading above 25 psi or below 10 psi when cold. Indicates expansion tank, fill valve, or leak issue.
Water leaking from the boilerDrips at fittings, the pump flange, the relief valve, or — worst case — the heat exchanger itself.
Banging or kettlingScale buildup on the heat exchanger restricting flow. Common after 8–10 years without proper maintenance.
Pilot light won't stay litOlder atmospheric boilers. Thermocouple, pilot orifice, or gas valve typically.
Short-cyclingBoiler fires for 30 seconds, shuts off, fires again. Wears the unit out fast — needs diagnosis.
Error or fault code displayedMod-con boilers show specific lockout codes. Tell us the code and the brand when you call.
Smell of gas or combustion gasesStop reading and leave the house. Call your gas company first, then call us.
Pressure relief valve ventingWater running from the discharge pipe is a real problem. Pressure is too high somewhere in the system.
How we diagnose and repair
Most of our boiler service calls follow the same arc: phone triage, on-site diagnosis with proper test equipment, repair with parts from the truck. The difference between us and a generalist HVAC company is in the diagnosis step — that's where corners get cut on most service calls in Utah.
Phone triage
We ask what's happening, what brand and model, how old the unit is, and what you've already tried. Two minutes on the phone often tells us what part to bring.
On-site diagnosis
Combustion analysis (O2, CO, stack temp, draft), gas pressure check, system pressure, expansion tank pre-charge, control sequence verification. We measure what's happening — we don't assume.
Honest quote
Before we touch anything billable beyond the diagnostic, you see the number. If we run into something unexpected we stop and re-quote. No surprise bills.
Repair & verify
Most repairs finish same-visit because the common parts are on the truck: igniters, flame rods, circulators, expansion tanks, zone valves, gas valves, aquastats, relief valves, control boards. We re-test after the repair to confirm proper operation.
Why a hydronic specialist outperforms a generalist
Most Utah HVAC companies do furnaces and air conditioners. They install a couple of boilers a year and call themselves boiler people. The truth is that boilers are 90% of our work — and that depth changes how a service call goes.
The two biggest differences:
Combustion analysis on every visit. Most generalists skip this because the test equipment costs $2,000 and the training takes years to develop. Without it, you can't tell whether a boiler is running correctly. We check CO, O2, stack temperature, and draft on every service.
Brand-specific training. A Lochinvar Knight, a Navien NPE, a Weil-McLain CGa, and a Viessmann Vitodens have nothing in common except they're all called "boilers." Each has its own failure modes, control logic, and quirks. We've worked on hundreds of each.
For the older atmospheric cast iron boilers that fill many of the homes in the Avenues, Holladay, Cottonwood Heights, and the Old Town section of Park City, we're often the only call that finds a tech who actually knows the unit. For modern mod-con condensing boilers, we're who installers call when they can't figure out what's wrong.
Boiler repair pricing in Utah
Pricing varies by what failed, brand, and access — but here are realistic 2026 ranges for the most common repairs we run. We give you the actual number before any work starts.
ServiceTypical range
Service call & diagnosticCombustion analysis, full system check$129–$189
If a repair is going to exceed $1,500 and the boiler is over 15 years old, we'll lay out the math on replacement alongside the repair option. Financing is available on the larger repairs and replacements.
Brands we service
If it heats water and burns gas, we know it. Brand-specific repair details and common failure points are on each manufacturer page:
Weil-McLain — CGa, GV90, Ultra, Eco. Common in older SLC and Ogden homes.
Lochinvar — Knight, KHN, KHB, Crest. Dominant in newer Park City and Draper custom homes.
We repair boilers across the Wasatch Front and Wasatch Back. The cities below are our core territory — for the full 26-city list see our service area hub.
Most boiler repairs in Utah fall between $200 and $900 parts and labor, depending on what failed. A circulator pump typically runs $400–$650 installed. An igniter or flame rod usually runs $200–$400. A gas valve or control board can reach $700–$1,200. We give you the number before we start the work — no surprises at the end.
Most of the time, yes. We carry the most common parts for Weil-McLain, Lochinvar, Navien, Triangle Tube, and others on the truck, and roughly 80% of service calls finish in a single visit. Winter no-heat calls in the Salt Lake Valley typically see us within an hour.
All major brands and most older ones. Weil-McLain, Burnham (US Boiler), Lochinvar, Navien, Triangle Tube, Viessmann, Bosch, Buderus, and most others — including older atmospheric cast iron units that most generalist HVAC companies won't touch.
Banging or kettling almost always means scale buildup on the heat exchanger or insufficient flow through the boiler. In Utah's hard water, this is common at 8–10 years on un-maintained systems. The fix is usually a chemical clean or system flush, sometimes a circulator pump check. It's not dangerous immediately, but ignoring it shortens the boiler's life significantly.
Three common causes: a slow leak somewhere in the system (often at a pump flange, air vent, or fitting), a failed pressure-reducing valve that's letting water out through the relief valve, or a waterlogged expansion tank that's letting pressure swing during heat cycles. We diagnose the actual cause rather than just topping up the system, which masks the problem.
Rule of thumb: if the boiler is under 15 years old and the repair is under 30% of replacement cost, fix it. If it's older than 15 years and needs a major component, the math usually favors replacement. We lay out the numbers openly and let you decide — we don't have a quota on replacements.
Yes. Larger repairs over roughly $1,500 are eligible for financing on qualifying applications. We'll walk you through the terms before any work starts. Financing is also available on full replacements.
Yes — and altitude work is a specialty. Boilers in Park City (7,000 ft), Heber (5,600 ft), and the Wasatch Back need proper combustion derate, and many were installed by contractors who never adjusted them correctly. We carry the right test instruments and the experience to tune them properly.
Related services
Boiler depth, end to end.
Repair is one slice. If it's time to replace, or your system has been neglected for years, these are the next stops.
Pick up the phone or send a quick message. We'll triage on the call and tell you straight whether it's same-day, next-day, or something you can probably stop spending money on.