Furnace Installation in Alburgh, VT
A new furnace here will run from September through May every year. Tell us about the house, and a licensed contractor who covers Grand Isle County will get in touch.
Tell us about the job
It takes about a minute.
Nine months of heat, and nights near 13 degrees
Alburgh gets heat going in September and doesn't shut it off until May. That's nine months a year the furnace needs to work. Winter nights average 13°F, cold enough that it runs long stretches, not just short bursts to take the chill off.
A lot of homes here still heat with fuel oil. Whatever goes in next has to meet the federal minimum of 80 percent AFUE if it's a non-weatherized gas furnace. Power is worth planning around too. Vermont saw 21% of households lose power for 24 hours or more in 2024, and this area has logged 16 winter storms and 33 damaging wind events over the past ten years. A furnace here needs to be sized for a long season and installed with those storms in mind.
- 9 months
- September through May, your furnace is on duty
- 13°F
- the average winter night it heats against
- 80% AFUE
- the federal minimum any new unit must meet

NOAA nClimDiv, 1991–2020 normals
Vermont has no state license for HVAC contractors.
Vermont keeps no record of HVAC contractors at all. There is no license to check and no registration on file with the state, so the state itself has no record of who installed your furnace or whether they knew the work.
What stands in for that here is the permit process. In most cities and towns in Grand Isle County, putting in a new furnace requires a permit from the local building office, and the work gets inspected once it's done. That inspection is what catches a bad vent connection or a gas line that wasn't sized right, the parts of the job that actually put a house at risk. No state license backs the contractor, but the permit and inspection still check the work itself.
Source: Vermont Department of Public Safety, Division of Fire Safety
- What size furnace does my house need?
- It depends on your home's size, how well it's insulated, and how many windows it has, so there's no single answer that works for every house. A contractor sizes a furnace by doing a heat loss calculation on your specific home, not by just matching the old unit's number. With winter lows around 13°F here, getting this right matters. Too small and it runs constantly without keeping up. Too big and it short cycles, which wears out parts faster and leaves rooms uneven.
- How do I know it's time to replace my furnace?
- Watch for uneven heat, rooms that used to feel warm now feeling cold, or the furnace running longer to do the same job it used to do quickly. Rising repair calls are another sign, especially if you're replacing the same part more than once. Age matters too. A furnace here runs nine months a year, September through May, so it puts in more hours each year than the same model would in a milder place, and that can bring the end of its life sooner. If a contractor tells you a repair costs a real share of what a new unit would, that's usually the point to stop patching it.
- Is a high-efficiency furnace worth it?
- Any furnace made after November 2015 has to hit at least 80 percent AFUE by law, so the real question is whether to go higher than that. A furnace with a higher AFUE rating burns less fuel to make the same heat, which matters most in a place like this where the furnace runs nine months of the year. Homes here that heat with fuel oil may want to weigh that against switching fuel types entirely, since that changes the equation more than efficiency alone. A contractor can walk you through the actual models and what each one would mean for your house.

