No Heat in Anchorage? Furnace & Boiler Help
Explore all 10 emergency troubleshooting guides written specifically for Anchorage, Eagle River, Chugiak, Wasilla, and Palmer homeowners—or call our 24/7 dispatch desk at (907) 250-9156 for immediate on-site repair.
No Heat in Anchorage? Furnace & Boiler Emergency Help (24/7 Triage Guide)
If you have no heat in Anchorage, Eagle River, Chugiak, Wasilla, or Palmer, call Anchor Services Alaska at (907) 250-9156 for 24/7 emergency furnace and boiler dispatch (45–60 minute average Anchorage ETA). Before our technician arrives, check your thermostat, verify the red emergency shutoff switch is ON, check your electrical breaker, inspect exterior PVC vents for snow blockage, and open under-sink cabinet doors so water pipes do not freeze.
Boiler Running & Hot, But Baseboards Are Ice Cold? (Alaska Hydronic Guide)
When your boiler burner fires and the temperature gauge reads 160°F–190°F, but your baseboards remain ice cold, hot water is blocked from circulating. The 4 primary causes in Alaska homes are: (1) a seized Taco or Grundfos circulator pump, (2) a burned-out Honeywell zone valve actuator head, (3) an airlocked loop at 0 PSI, or (4) an ice plug inside an exterior wall baseboard loop. Call Anchor Services Alaska at (907) 250-9156 immediately before the stagnant loop freezes solid and bursts.
Furnace Blowing Cold Air in Sub-Zero Alaska Weather? 7 Causes & Fixes
If your forced-air gas furnace is blowing cold air in Anchorage or the Mat-Su Valley, the blower fan is running while the gas burners are locked out. The 5 most common causes are: (1) a clogged air filter tripping the high-limit overheat switch, (2) a dirty flame sensor shutting off gas after 3 seconds, (3) a cracked hot-surface igniter, (4) a snow-blocked outdoor PVC intake/exhaust pipe, or (5) a thermostat fan set to ON instead of AUTO. Call Anchor Services Alaska 24/7 at (907) 250-9156.
Navien & Lochinvar Boiler Error Codes in Alaska (E003, E012, E016, E110)
When a Navien condensing boiler or combi-unit flashes a red screen in Alaska, the error code pinpoints the lockout cause: E003 means Ignition Failure, E012 means Flame Loss (often frozen condensate or gas/vent issue), E016 means Overheating (frozen hydronic loop or bad pump), E109/E110 means Exhaust/Air Pressure blockage (snow or ice in outside PVC pipe), and E302 means Low Water Pressure. Call Anchor Services Alaska 24/7 at (907) 250-9156 for certified Navien & Lochinvar diagnostics.
Boiler Pressure at 0 PSI or Leaking at 30 PSI? Expansion Tank & Auto-Fill Guide
A residential hydronic boiler in Alaska should read 12–15 PSI cold and 18–22 PSI hot. If the gauge reads 0 PSI, water cannot push to upstairs baseboards—causing airlocks and frozen pipes. Never feed cold water into a hot cast-iron boiler (risk of cracking the block). If the gauge hits 28–30+ PSI and discharges water onto the floor, your #30 expansion tank is waterlogged or your auto-fill regulator is stuck open. Call Anchor Services Alaska at (907) 250-9156.
Frozen or Snow-Blocked Furnace & Boiler Vents in Alaska Blizzards
During heavy Alaska snowstorms and -15°F cold snaps, outdoor PVC intake and exhaust vents for high-efficiency furnaces and condensing boilers frequently clog with drifted snow, icicles, or hoarfrost. When airflow drops, the internal air pressure switch immediately locks out the burner to prevent carbon monoxide buildup inside your home. Clear snow 24 inches around the pipes outside, snap off icicles gently, and call Anchor Services Alaska 24/7 at (907) 250-9156 if the unit stays locked out.
How to Tell If Your Hydronic Baseboard Heating Loop Is Frozen (& Safe Thawing)
A hydronic baseboard heating loop can freeze solid along an exterior Alaska wall, cantilevered floor, or garage pass-through even while the boiler itself is running. Warning signs include a hot boiler with one stone-cold room zone, frost on copper fins behind the baseboard cover, or hissing water when ice begins to thaw. NEVER use an open blowtorch—call Anchor Services Alaska 24/7 at (907) 250-9156 for flameless electronic pipe thawing, ProPress/soldered copper repair, and propylene glycol protection.
Weil-McLain or Burnham Boiler Won't Fire? Aquastat, Thermocouple & Rollout Triage
Cast-iron Weil-McLain and Burnham boilers are the workhorses of Anchorage and Mat-Su homes. When a cast-iron boiler refuses to fire, the most common culprits are: (1) a burned-out standing pilot thermocouple or intermittent spark igniter, (2) a stuck motorized flue vent damper that fails to prove open, (3) a failed Honeywell L8148 aquastat control relay, (4) a tripped low-water cutoff (LWCO), or (5) a blown flame rollout thermal fuse. Call Anchor Services Alaska 24/7 at (907) 250-9156.
No Heat AND No Hot Water? Troubleshooting Alaska Boiler + Boilermate Systems
If you lose both house heat and domestic hot water at the same time in Alaska, your main boiler has locked out. However, if you have plenty of scalding hot shower water while your house baseboards are freezing cold, your indirect water heater (such as an Amtrol Boilermate) is likely 'stuck in Domestic Hot Water Priority'—which electronically locks out all house heating zones until the water tank thermostat is satisfied. Call Anchor Services Alaska 24/7 at (907) 250-9156.
How Fast Do House Pipes Freeze When the Heat Goes Out in Alaska? (-40°F to +20°F)
When your boiler or furnace fails in Alaska, water pipes located inside exterior walls, cantilevered floors, crawlspaces, and garages freeze long before the center of your home drops to 32°F. At +15°F outdoors, vulnerable pipes can freeze in 8–12 hours; at 0°F to -10°F, in 4–6 hours; and at -20°F to -40°F in Wasilla, Palmer, or the Anchorage Hillside, pipes can freeze solid in 90 minutes to 3 hours. Call Anchor Services Alaska 24/7 at (907) 250-9156 for emergency heating restoration or emergency drain-down.