Furnace Installation in Martinsville, IN
A new furnace here will run from October through May every year. Tell us about the house, and a licensed contractor who covers Morgan County will get in touch.
Tell us about the job
It takes about a minute.
Eight months of heat, down to 23 degrees
Morgan County homes need a working furnace from October through May. That's eight months a year it has to run, on nights that average 23°F through December through February.
A furnace installed here needs to be sized for that whole stretch, not just the coldest nights. New non-weatherized gas furnaces are required by federal rule to reach at least 80.0 percent AFUE, so that efficiency comes built into the equipment. What's left to get right is the size, matched to your house and the winter it has to get through.
- 8 months
- October through May, your furnace is on duty
- 23°F
- the average winter night it heats against
- 80% AFUE
- the federal minimum any new unit must meet
NOAA nClimDiv, 1991–2020 normals
In Indiana, HVAC licensing for homes is left to the counties and cities.
Morgan County sets its own rule on who can do HVAC work, since Indiana leaves that decision to counties and cities. Whether a contractor needs a local license or registration to work here depends on what the county or any city inside it requires, not on a state list. There is no state record to check either way. What exists instead, for a furnace install, is the local building office.
A new furnace in most cities and counties needs a permit before the work starts and an inspection after it is done. That inspection is what stands between you and a bad gas connection or a venting mistake, since those are the parts of a furnace install that can actually hurt someone. The permit ties the job to the address, and the inspection is the record that someone other than the installer looked at the work.
Sources: Indiana Department of Workforce Development · State of Indiana
- What size furnace does my house need?
- The right size depends on your square footage, your insulation, your windows, and your home's layout, so there's no single number that fits every house. A contractor will walk through your home and run a load calculation to figure out what your house actually needs. Going too big wastes fuel and cycles on and off more than it should. Going too small means it runs constantly and still can't keep up when your winter nights are dropping to 23°F.
- How do I know it's time to replace my furnace?
- If your furnace is struggling to keep the house warm, cycling on and off more than it used to, or needing repairs more often, it's time to start planning for a replacement. Age matters too. Furnaces here run from October through May, eight months a year, so yours logs a lot of hours over its life and wears accordingly. Rising utility bills with no other explanation are another sign the heat exchanger or blower isn't working the way it should. If a repair would cost close to what a new furnace would, that's usually the point to stop repairing.
- Is a high-efficiency furnace worth it?
- A high-efficiency furnace burns less gas to produce the same heat, which matters here because your furnace runs eight months of the year. Any non-weatherized gas furnace made after November 2015 has to hit at least 80 percent AFUE, so even a standard model today isn't wasteful. A high-efficiency model pulls more heat out of every unit of gas burned than that. Whether the higher upfront cost makes sense for your house is something a contractor can walk you through based on your current furnace and your gas usage.