Furnace Installation in London, KY
A new furnace here will run from October through April every year. Tell us about the house, and a licensed contractor who covers Laurel County will get in touch.
Tell us about the job
It takes about a minute.
Seven months of heat, and not much room for the furnace to fail
Laurel County needs a working furnace from October through April. Winter nights average 28°F, so the furnace is running most nights for the better part of the year. That is a long stretch for any unit to carry the load without a break.
Most homes here heat with electricity, and the power does not always stay on. Across Kentucky, close to a quarter of households lost power for at least a day in 2024, and this area has seen 16 winter storms and 115 damaging wind events over the last ten years. A new furnace installed here should be one you can count on through those months, not just on the easy nights. If you are installing a new gas furnace, federal rules now require it to reach at least 80 percent AFUE.
- 7 months
- October through April, your furnace is on duty
- 28°F
- the average winter night it heats against
- 80% AFUE
- the federal minimum any new unit must meet
NOAA nClimDiv, 1991–2020 normals
Kentucky requires HVAC contractors to hold a state license.
Kentucky's license is issued through the Department of Housing, Buildings and Construction, and it covers the contractor, not the job. That means the state has tested this contractor and keeps a record of them, but no state office signs off on your furnace specifically.
That's where the permit comes in. In most cities and counties, installing a furnace needs a permit from the local building office, and an inspection once the work is done. The gas connection is the part worth getting right, since a bad one is what makes a furnace dangerous rather than just broken, and the local inspection is what checks that piece on this job.
Sources: Kentucky Legislative Research Commission · Kentucky Department of Housing, Buildings and Construction
- What size furnace does my house need?
- It depends on your square footage, your insulation, your ceiling height, and how many windows you have facing north. A furnace that's too big cycles on and off too fast and never runs long enough to heat evenly. One that's too small runs constantly and still can't keep up on the coldest nights. A contractor works this out with a load calculation, not a chart based on square footage alone, since two houses the same size can need very different furnaces.
- How do I know it's time to replace my furnace?
- Age is the first sign, along with repairs that keep coming back and bills that climb without a clear reason. Uneven heat between rooms is another sign, since it often means the furnace can no longer push air the way it used to. Homes here need heat from October through April, so a furnace that's already struggling is worth replacing before it fails in the middle of that stretch.
- Is a high-efficiency furnace worth it?
- It depends on how you heat now and how long you plan to stay in the house. Any non-weatherized gas furnace made on or after November 19, 2015 has to reach at least 80 percent AFUE, so even a standard model today wastes less fuel than older units did. A furnace rated above that baseline sends less heat out the flue and more into the house, which matters more here with 7 months of heating and winter nights averaging 28°F. A contractor can walk you through the actual models and what each one would mean for your house.