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Homes in Orleans County, VT run heat about nine months a year, from September through May. The burner assembly and ignition system take the load every time a furnace cycles, and a long heating season means they cycle hard, season after season, with little time idle. A contractor coming in on a repair call checks those parts first: the igniter, the flame sensor, the heat exchanger. They fail by wear, and wear here is not a slow process. A system that has been undersized or poorly serviced shows it in those components well before anything else gives way.
Ductwork in a house this old was sized and routed for equipment that no longer exists. When a furnace in Orleans County opens up, the contractor is looking at heat exchangers, burner assemblies, and control boards from product lines that manufacturers stopped supporting years ago. Half the homes in Orleans County, Vermont were built in 1978 or earlier (2020-2024 ACS 5-year). That gap between the building and what runs in it now is where parts availability becomes the deciding question on a repair job. A contractor who can source the component keeps the system running; one who cannot is pricing a replacement before the first call is finished.
The Parts of a Furnace a Contractor Checks First
The heat exchanger sits at the core of the furnace cabinet, in the mechanical room or basement, and is the piece a contractor looks at closely when a furnace is blowing air but failing to warm the house or when combustion gases become a concern. The burner assembly sits just below it and is the first suspect when the furnace will not ignite or the flame cuts out early.
The blower motor and its fan wheel sit in the lower section of the cabinet and push conditioned air into the supply side of the duct system. The control board, mounted inside the cabinet door, runs the sequence of operations and is what a contractor reads for fault codes when the furnace behaves erratically or refuses to start.
The drawing shows the general layout of a furnace system, and a licensed contractor determines which components apply to the specific equipment and configuration in your home.
Find a contractor in Orleans CountyOrleans County, by the numbers
87 severe weather events were recorded in Orleans County, Vermont between 2015 and 2024.
NOAA National Centers for Environmental Information, Storm Events Database, bulk CSV export, events 2015-01-01 through 2024-12-31.Half the homes in Orleans County, Vermont were built in 1978 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOrleans County, Vermont holds 16,751 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 79.7% of the occupied homes in Orleans County, Vermont (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesCodes & Standards Behind Furnace Repair in Orleans County, Vermont6 sourced rules and standards
What happens when a contractor comes out
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.
What Orleans County, Vermont Requires for This Work
Vermont splits the trade across two specialty licences and a contractor may hold one without the other: field A1 covers automatic gas or oil heating including geo-thermal and ground source heat pumps, and field C3 covers refrigeration or air conditioning including air-to-air heat pumps.
Vermont reaches HVAC work through its electricians’ licence rather than an HVAC licence, and the requirement stops at the front door of a house: anyone performing electrical work in Vermont must be licensed as an electrician unless the work is in a residential building containing two or fewer dwelling units.
Severe Weather Events in Orleans County
Extreme weather puts real stress on heating equipment: hard cold snaps, sudden swings, and prolonged demand all shorten the life of components and bring repairs forward. A furnace serving Orleans County works against local conditions, and what those conditions look like from year to year shapes how much that equipment is asked to do.
87 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.