Boilers
Boiler Repair & Installation in Anchorage, Alaska
Moore Heating provides boiler repair and installation throughout Anchorage and the Mat-Su Valley. Our licensed technicians work on gas, oil, and propane hot-water and steam boiler systems, including cast-iron and high-efficiency modulating models, with 24/7 emergency availability when the temperature drops. Call (907) 561-1500 to schedule.
- 24/7 emergency service, 365 days a year
- Serving Anchorage and the Mat-Su Valley
- Licensed, bonded, and insured in Alaska
- Lennox Premier Dealer
- Family-owned, serving Alaska since 1974
- Free installation estimates
What Are the Most Common Boiler Problems in Alaskan Homes?
Boilers in Anchorage and the Mat-Su Valley run hard for eight months a year, and the failures we see are almost always tied to that sustained load. The most common issues are frozen or blocked condensate drain lines (on high-efficiency units), expansion tank failure that leads to pressure swings, circulator pump bearing wear, sediment and scale buildup on the heat exchanger, leaking pressure relief valves, and ignition or flame-sensing failures that lock the unit out on the coldest nights.
Because many Alaska homes have boilers in unheated basements or utility rooms, freeze risk is real. A boiler that loses pressure overnight can stop heating, and within hours that can lead to frozen pipes. Our 21-point HVAC inspection catches these vulnerabilities before they become emergencies.
How Do You Know When to Repair vs. Replace Your Boiler?
Cast-iron boilers can last 20–30 years, while high-efficiency condensing models typically run 15–20 years with proper maintenance. If your boiler is approaching that age and needs major work, a cracked heat exchanger, a failed pump manifold, or repeated control board failures, replacement often makes more financial sense than chasing repairs. Other signals include rising energy bills without a rate increase, uneven heating between zones, and the inability to maintain consistent pressure.
We evaluate the whole system: the boiler itself, the distribution piping, the circulators, and the controls. If a repair buys you another five reliable winters, we’ll tell you. If the math favors replacement, we’ll give you a clear written estimate and walk through equipment options.
What Does Boiler Repair or Replacement Cost in Anchorage?
Boiler pricing in Alaska depends on the type of system (steam vs. hot water, standard vs. high-efficiency), the size of your home, the number of heating zones, and whether the existing piping and venting can be reused. A simple repair like a circulator pump or pressure relief valve is modest; a full high-efficiency replacement with zone valves and a new indirect water heater is a larger investment. Because every home’s hydronic system is different, we don’t quote sight-unseen, every estimate is based on a technician actually evaluating your equipment.
Request a free, no-obligation estimate and we’ll give you a clear written quote.
Hot Water Boiler vs. Steam Boiler, What's the Difference?
Most modern Alaskan homes use hot-water boilers, which circulate heated water through baseboard radiators, in-floor tubing, or hydro-air coils. Steam boilers, more common in older homes, send steam through cast-iron radiators and operate at higher temperatures and pressures. The two systems require different service expertise, steam work involves valve maintenance, trap cleaning, and pressure balancing that hot-water systems don’t need.
Our technicians are trained on both. Whether you have a century-old steam system in Fairbanks or a modern modulating condensing boiler in Eagle River, we can diagnose, repair, and replace it.
What Happens During a Moore Heating Boiler Tune-Up?
- Inspect heat exchanger for cracks, corrosion, and scale
- Check and clean the burner assembly and flame pattern
- Test and clean the flame sensor or thermocouple
- Inspect ignition system (spark, hot surface, or pilot)
- Verify gas pressure (inlet and manifold) or oil nozzle and pump pressure
- Test combustion air supply and venting integrity
- Check and lubricate the circulator pump(s)
- Measure circulator amp draw against manufacturer spec
- Inspect expansion tank pre-charge and bladder condition
- Test pressure relief valve operation and discharge path
- Check system pressure and verify it holds stable
- Inspect and bleed radiators or purge baseboard zones
- Test all zone valves and thermostat end switches
- Inspect electrical connections and tighten as needed
- Check aquastat, low-water cutoff, and high-limit controls
- Measure temperature rise and stack temperature
- Test carbon monoxide levels at the boiler and in the living space
- Inspect condensate drain line and neutralizer (if applicable)
- Check for leaks at joints, valves, and fittings
- Run the system through a full heating cycle
- Review findings with you and document the visit
Frequently Asked Questions
How much does a boiler tune-up cost in Anchorage?
Boiler tune-up pricing depends on the type of system and whether you’re on a maintenance plan. Members of our 15-5 Preventative Maintenance Agreement receive priority scheduling and discounted rates. Call (907) 561-1500 for current pricing.
How long does a new boiler installation take?
Most residential boiler replacements take one to two days. Steam systems and jobs requiring new zone valves, circulators, or piping modifications may take longer. Your technician will give you a clear timeline before any work starts.
What should I do if my boiler stops working in winter?
First, check that the thermostat is on, set above the room temperature, and has working batteries. Confirm the boiler switch and breaker haven’t tripped, and verify the system pressure is in the normal range on the gauge. If those check out and the boiler still won’t fire, call (907) 561-1500, we answer 24/7. In an Alaskan winter, a long no-heat period risks frozen pipes, so don’t wait it out.
How often should I service my boiler?
Annually, ideally in early fall before the heating season ramps up. A yearly tune-up catches small issues before they become midnight emergencies and keeps manufacturer warranties valid on most equipment.
Do you service all boiler brands?
Yes. We’re a Lennox Premier Dealer and we install Lennox and Aire-Flo equipment, but our techs are trained to repair every major boiler brand sold in Alaska. We’ll service the equipment you have regardless of who installed it.
Is it worth upgrading to a high-efficiency boiler in Alaska?
For most Anchorage and Mat-Su homes that heat eight months a year, a high-efficiency condensing boiler pays back faster than in milder climates because the equipment runs so many hours. Your tech can walk through expected savings based on your current system, fuel rates, and the condition of your existing distribution piping.