HVAC in Anchorage means a furnace or a boiler that runs through the long dark and does not get a mild-city break. Houses here were built for cold first. Inlet wind stacks drift on the terminations. A crawl full of duct loses heat before the far bedroom. Higher ground is colder and windier than a sheltered street, and the same machine feels different there. Say what happened on the last hard night.
If you smell trouble, stop the unit and get to fresh air before you describe comfort. Combustion air, the flue, and the heat exchanger are the safety questions. A high-efficiency intake ices or disappears under a drift on the inlet side. Condensate freezes and the heat stops while the thermostat keeps asking. Filters plug. Name gas, oil, or propane, and say whether a boiler is also your hot water.
A shake can move a flue or a fuel connection, and that is a standing Anchorage concern, not a maintenance aside. Say if the house moved. Replacement is saner in the short bright season. A dead unit in the dark does not give you that choice. Say if the house is cold now. Efficiency labels are a test comparison. They are not a promise about your fuel.
Bedrooms over the crawl and rooms on the inlet side are where a lazy duct layout gets caught. A thermostat in a glass room lies when the summer daylight is long and lies again in the dark. Additions and garages that were never really heated should be named. A wood stove in the corner is not the primary system if the primary system is down.
Say the part of Anchorage, heat or no heat, and whether the unit is dead or merely losing rooms. Mention ice on a pipe outside, a frozen condensate line, or a flue that shifted. If the house is cold, lead with that. These nights will not wait on a list. Call the number on this page.