Furnace Installation in Everett, WA
A new furnace here will run from September through June every year. Tell us about the house, and a licensed contractor who covers Snohomish County will get in touch.
Tell us about the job
It takes about a minute.
Ten months of heat a year in Everett
A furnace here runs from September through June. Winter nights average 30°F, so the burner is lighting and cycling most nights for most of the year.
More than half of homes in the area heat with electricity, and in 2024, 23 percent of Washington households lost power for 24 hours or more. A new gas furnace installed today has to meet a federal minimum of 80 percent AFUE, so whatever goes in will already meet that standard.
- 10 months
- September through June, your furnace is on duty
- 30°F
- the average winter night it heats against
- 80% AFUE
- the federal minimum any new unit must meet
NOAA nClimDiv, 1991–2020 normals
Washington requires contractors to register with the state.
That registration means the business is on file with the state and carries the bond and insurance L&I requires. It is not a trade exam and not a license. The state does not test contractors on furnace work before letting them register, so the number on file tells you the business is registered, not that anyone checked its work.
For a furnace installation in Snohomish County, the protection that matters comes from the local building office. Most cities and counties here require a permit for a furnace replacement and an inspection once the work is done, and that inspection is what checks the gas connections, the venting, and whether the unit was installed the way it is supposed to be. That inspection is separate from the state registration and happens on its own schedule through the local permit office.
Source: Washington State Legislature
- What size furnace does my house need?
- There is no single number that fits every house. A contractor works out the size by doing a heat loss calculation, looking at your insulation, your windows, your ceiling height, and how much wall and glass you have facing outside. Square footage alone does not tell you this. A furnace that is too big will short cycle and wear out early, and one that is too small will run constantly and still leave you cold on the coldest nights.
- How do I know it's time to replace my furnace?
- Watch for uneven heat, a furnace that runs longer than it used to, or repairs that keep coming back. A furnace nearing the end of its life often struggles to keep up on the coldest nights, and with winter lows here averaging 30°F that shows up fast. If a contractor finds a cracked heat exchanger, that is not a repair, that is a replacement, since a cracked heat exchanger can let combustion gases into your air. Rising repair costs on an older unit are usually a sign the next breakdown is close.
- Is a high-efficiency furnace worth it?
- It depends on how long you plan to stay in the house and what furnace you have now. Every non-weatherized gas furnace made since November 2015 has to reach at least 80 percent AFUE, so even a standard new furnace wastes less fuel than an older one might. A high-efficiency furnace pulls more heat out of the same fuel than one built to that minimum, which matters more here since homes need heat from September through June. A contractor can walk you through the options and price the difference for your house.