Tell us about the job
Takes about a minute. No obligation.
Sizing a furnace for Kodiak Island Borough requires a contractor to account for a load that never fully disappears. Homes in Kodiak Island Borough, AK run heat in every month of the year. The burner and heat exchanger cycle without the long idle periods that let marginal installations go unnoticed elsewhere. An undersized unit runs longer per cycle and strains the ignition system steadily rather than seasonally. A contractor quoting a replacement here factors that continuous demand into equipment selection before anything else gets priced.
Existing ductwork is what decides how a furnace installation goes in much of Kodiak Island Borough, and what is already in the walls was built around equipment that has since been replaced at least once. Half the homes in Kodiak Island Borough, Alaska were built in 1987 or earlier (2020-2024 ACS 5-year). A contractor sizing a new furnace here has to work out whether the trunk lines and branch runs in the house will carry what the new unit moves, because ductwork laid out for an earlier system carries air differently than the layout a modern furnace wants. Electrical service gets the same look. A panel that was adequate when the house went up may be running closer to its limit now.
What Gets Installed With a New Furnace
The furnace itself sits in a utility space, a basement, or a mechanical closet and is the unit that produces heat. A flue pipe runs from the furnace to an exterior wall or through the roof, carrying combustion gases out of the house. The supply plenum attaches directly to the top of the furnace and is where heated air enters the duct system.
The thermostat mounts on an interior wall and is the control point a homeowner uses to set temperatures and schedules. A contractor also installs a filter housing at the air intake side of the furnace, and a fresh-air intake pipe if the unit draws combustion air from outside rather than from the room it sits in.
The drawing shows a typical layout, and a licensed contractor determines exactly which components apply to your house and how each one is positioned.
Find a contractor in Kodiak Island BoroughKodiak Island Borough, by the numbers
Half the homes in Kodiak Island Borough, Alaska were built in 1987 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesKodiak Island Borough, Alaska holds 5,854 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 61.1% of the occupied homes in Kodiak Island Borough, Alaska (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesFurnace Installation Rules for Kodiak Island Borough, Alaska5 codes, standards, and laws
What happens when the contractor shows up
Non-weatherized gas furnaces manufactured on or after November 19, 2015 must reach 80.0 percent AFUE.
Non-weatherized oil-fired furnaces manufactured on or after November 19, 2015 must reach 83.0 percent AFUE.
Mobile home gas furnaces manufactured on or after November 19, 2015 must reach 80.0 percent AFUE.
Non-weatherized gas furnaces manufactured on or after December 18, 2028 must reach 95.0 percent AFUE, up from the 80.0 percent minimum that applies to units manufactured before that date.
Licensing Rules for HVAC Work in Kodiak Island Borough, Alaska
Alaska requires a certificate of registration as a contractor: a person may not submit a bid or work as a contractor until the department has issued one.