Furnace Installation in Lafayette, IN
A new furnace here will run from October through May every year. Tell us about the house, and a licensed contractor who covers Tippecanoe County will get in touch.
Tell us about the job
It takes about a minute.
Eight months of heat in Tippecanoe County
Furnaces here run October through May, with winter nights averaging 21°F from December through February. That is eight months of the year a furnace has to work, and cold nights push it hard.
Any new gas furnace installed now has to reach at least 80.0 percent AFUE, the federal minimum set in 2015. Power is worth planning around too. In 2024, 17 percent of Indiana households lost power for 24 hours or more, and the last ten years brought 10 winter storms and 83 damaging wind events to the area. A furnace that starts back up on its own when the power returns matters here.
- 8 months
- October through May, your furnace is on duty
- 21°F
- the average winter night it heats against
- 54%
- of homes here heat with gas, so most furnaces here burn gas
- 80% AFUE
- the federal minimum any new unit must meet

NOAA nClimDiv, 1991–2020 normals
A high-efficiency gas furnace would save about $100 a year to run in Tippecanoe County compared with a gas furnace.
Estimates for a typical Tippecanoe County home, from EIA household energy data, Indiana fuel prices and NOAA climate normals. Your home will differ.
In Indiana, HVAC licensing for homes is left to the counties and cities.
Tippecanoe County sets its own rule for who can do this work, since Indiana leaves HVAC licensing to the local level. There is no state record of who is qualified to install a furnace here. Whatever protection exists comes from what the county or city requires on its own, not from a state list.
For a furnace install, that protection is the permit. Most cities and counties require one for a furnace replacement, along with an inspection once the work is done, and that inspection is what catches a bad gas connection before it becomes dangerous. More than half the homes in Tippecanoe County heat with gas, so that check matters for a job like this one.
Sources: Indiana Department of Workforce Development · State of Indiana
- What size furnace does my house need?
- It depends on your home's square footage, insulation, window count, and ceiling height, not just floor space. A furnace sized too big will short cycle and wear out faster. One sized too small will run constantly and still leave rooms cold on nights that drop toward 21 degrees. A contractor works this out with a load calculation on your actual house, not a rule of thumb.
- How do I know it's time to replace my furnace?
- An aging furnace that needs more repair calls than it used to is the clearest sign. If the heat exchanger or blower motor is failing, that repair can run close to the cost of a new furnace, so it's worth comparing the two before you commit to the fix. Struggling to keep the house warm on the coldest nights, or gas bills climbing while your habits haven't changed, both point the same way. Homes here need heat from October through May, so a furnace on its way out gets tested most months of the year. Have a contractor look at it before it fails on one of those 21 degree nights.
- Is a high-efficiency furnace worth it?
- It depends on how long you plan to stay in the house and what furnace you have now. Homes here need heat for 8 months of the year, October through May, so a furnace runs more than it would in most places, and higher efficiency has more months to earn its keep. Every new non-weatherized gas furnace sold today has to hit at least 80 percent AFUE by law, and high-efficiency models go beyond that, burning less gas for the same heat. A contractor can tell you what efficiency makes sense for your house and your current system.


