A snow-covered two-story house at night during a snowstorm, with one illuminated upper window and a attached garage.

Furnace Installation in Watford City, ND

A new furnace here will run from September through May every year. Tell us about the house, and a licensed contractor who covers McKenzie County will get in touch.

Tell us about the job

It takes about a minute.

Step 1 of 3: Equipment
A gas furnace and sheet-metal air handler unit installed in an unfinished concrete basement.

Nine months of heat, down to 7 degrees

Watford City asks for heat from September through May. That is nine months of the year your furnace has to work, with winter nights averaging 7°F from December through February. A furnace sized right for this has to carry that load night after night, not just on the coldest one.

Most homes here heat with electricity, and McKenzie County has logged 16 winter storms and 79 damaging wind events over the past ten years. Statewide, 7 percent of households lost power for 24 hours or more in 2024. Any gas furnace installed here has to meet 80.0 percent AFUE at minimum, so that number is the floor to plan from, not the target.

9 months
September through May, your furnace is on duty
7°F
the average winter night it heats against
80% AFUE
the federal minimum any new unit must meet
Isometric cutaway illustration of a single-story house showing a gray furnace connected to white ductwork and a flue pipe extending through the shingled roof, with simplified furniture in the interior rooms.
Your furnace works hardest from November through March.

NOAA nClimDiv, 1991–2020 normals

North Dakota requires HVAC contractors to hold a state license.

The state license comes from the Secretary of State, and it is tied to the contractor, not to any single job. That means the testing and the record behind it follow the business, whatever house they show up at next. North Dakota also sets a line at $4,000. Work under that amount does not need a licensed contractor at all, so on smaller jobs the license requirement drops away.

A furnace installation runs well past that $4,000 line, so the contractor doing this job needs to hold that state license. Beyond the license, the local building office is the other check on this work. In most cities and counties, putting in a new furnace needs a permit, and the work gets inspected once it's done. That inspection is what catches a bad gas connection or a venting mistake, the kind of thing that makes this job worth getting right the first time.

Sources: North Dakota Legislative Branch · North Dakota Secretary of State

What size furnace does my house need?
It depends on your square footage, ceiling height, insulation, window count, and layout, so there's no single number that fits every house. Too big and the furnace short cycles, turning on and off more than it should and wearing out early. Too small and it runs constantly but still can't keep up on a 7°F night. A contractor should run a load calculation on your specific house rather than just match whatever size is already in there.
How do I know it's time to replace my furnace?
Watch for longer run times, rooms that heat unevenly, and repairs that keep coming back. A furnace that cycles on and off more than it used to is working harder than it should. Heat is needed here from September through May, nine months a year, so a furnace on its way out gets tested hard for most of the year. If a repair would cost close to what a new furnace would, replacing it usually makes more sense than patching an old one going into another stretch of nights averaging 7°F.
Is a high-efficiency furnace worth it?
Any furnace installed today has to reach at least 80 percent AFUE, so even the minimum wastes less fuel than an older furnace does. A high-efficiency model rated above that turns more of the fuel it burns into heat instead of losing it out the vent. With heat needed from September through May here, that difference gets used nine months out of the year, not just on the coldest ones. A contractor can walk through whether the higher upfront cost makes sense based on your current furnace and fuel type.