Ohio HVAC Pros
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Furnace Installation in Lorain, OH

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

Tell us about the job

It takes about a minute.

Step 1 of 3: Equipment
An unfinished basement featuring a forced-air furnace, exposed wooden ceiling joists, bare concrete walls, and miscellaneous items including cardboard boxes and coiled cables on the floor.

Eight months of heat, and winters that test the grid

Lorain County needs the furnace running from October through May. That is eight months of the year the system has to work, on nights that average 23°F. A new furnace here is not sized for a mild climate. It has to hold up through a long, cold season.

Most homes in the area heat with gas, so a furnace has to meet the federal minimum of 80 percent AFUE if it was built after November 2015. Winter here also brings storms. Ohio saw 18 percent of households lose power for a day or more in 2024, and the region has logged 12 winter storms and 112 damaging wind events over the past ten years. A furnace installed here needs to be ready for that kind of winter, not just a cold night now and then.

8 months
October through May, your furnace is on duty
23°F
the average winter night it heats against
77%
of homes here heat with gas, so most furnaces here burn gas
80% AFUE
the federal minimum any new unit must meet
Isometric cutaway illustration of a small single-story house showing interior rooms, a furnace unit with a flue, and connected ductwork running below the dark gabled roof.
Your furnace works hardest from November through March.

NOAA nClimDiv, 1991–2020 normals

A gray forced-air furnace with metal ductwork stands in an unfinished basement with exposed wooden joists, concrete walls, and a single hanging light bulb.

A high-efficiency gas furnace would save about $140 a year to run in Lorain County compared with a gas furnace.

  • A high-efficiency gas furnace$680 a year
  • A gas furnace$820 a year

Estimates for a typical Lorain County home, from EIA household energy data, Ohio fuel prices and NOAA climate normals. Your home will differ.

In Ohio, HVAC licensing for homes is left to the counties.

Whether the contractor putting in your furnace is licensed depends on where in Lorain County your house sits, since Ohio leaves that rule to the counties instead of setting one statewide. Ohio does define what a home contractor is, and that definition includes carrying at least $250,000 in liability insurance. That is not a license and nothing is tested to meet it, but it is a real floor on the coverage a contractor doing this kind of work is supposed to carry.

For a furnace install, the protection you actually get comes from the local building office, not from a state license. Most cities and counties require a permit before the work starts and an inspection once it is done, checking that the furnace is installed and vented the way it should be. With gas furnaces as common as they are in Lorain County, that gas connection is the part of the job an inspector will be looking at closely.

Source: Ohio Legislative Service Commission

What size furnace does my house need?
It depends on your square footage, ceiling height, insulation, and how many windows you have, so there's no single number that fits every house. A contractor works this out with a load calculation, not a chart based on home size alone. Getting this right matters more here than in milder places, since your furnace runs from October through May and needs to keep up on nights averaging 23°F. Too small and it will run constantly without catching up. Too large and it will short cycle and wear out faster.
How do I know it's time to replace my furnace?
Age is the first thing to look at. An older furnace that needs repairs more often, and where those repairs cost more each time, is telling you something. Watch for uneven heat between rooms, a furnace that runs long cycles without warming the house, or a rise in gas bills with no other explanation. If a contractor tells you the heat exchanger is cracked, that's a straight replace, not a repair, since it's a safety issue. With 8 months of heating needed here every year, a furnace on its way out has little time to rest before it's asked to work hard again.
Is a high-efficiency furnace worth it?
For a house here, it usually is, because you're heating from October through May with winter lows averaging 23°F. That's a lot of hours the furnace is running, and every point of AFUE above the 80 percent minimum now required by law means less gas burned for the same heat. High-efficiency furnaces vent through PVC pipe instead of a metal flue, which changes the installation itself. A contractor can walk you through which efficiency level makes sense for your house and how the venting would work.