Furnace Installation in Lewiston, ME
A new furnace here will run from September through May every year. Tell us about the house, and a licensed contractor who covers Androscoggin County will get in touch.
Tell us about the job
It takes about a minute.
Nine months of heat a year in Lewiston
A new furnace here works from September through May. Winter nights average 13°F, and yours has to recover from that cold every night for most of the year.
Most homes in the area heat with fuel oil, so that is likely what your new furnace will run on too. If it burns gas instead, federal rules now set the floor at 80 percent AFUE, so any new gas furnace installed will meet that or better. Power outages are common here, with more than half of Maine households losing power for at least a day in 2024, so it is worth asking what your new furnace needs to run and what happens to it when the power goes out.
- 9 months
- September through May, your furnace is on duty
- 13°F
- the average winter night it heats against
- 80% AFUE
- the federal minimum any new unit must meet
NOAA nClimDiv, 1991–2020 normals
- What size furnace does my house need?
- It depends on your home's square footage, insulation, window count, and ceiling height, so there's no single number that fits every house. A contractor will run a load calculation, room by room, to size it correctly. Going too big wastes fuel and wears out the furnace faster by cycling on and off. Going too small means it runs constantly and still can't keep up when it's 13°F outside.
- How do I know it's time to replace my furnace?
- Watch for uneven heat between rooms, a furnace that runs longer than it used to, or repair bills that keep coming back. Age matters too, and an older furnace getting less reliable is a real risk with heat needed here from September through May. Yellow flame instead of blue, or soot near the unit, means get it looked at now, not later. A contractor can tell you whether it's worth repairing again or time to replace it.
- Is a high-efficiency furnace worth it?
- It depends on how long you plan to stay in the house and what you're heating with now. Any non-weatherized gas furnace built since late 2015 already has to hit at least 80 percent AFUE, so the real question is whether a higher-efficiency model pays off for your situation. With close to 9 months of heating needed here and most homes running on fuel oil, the fuel type and how much you use it matter as much as the rating itself. A contractor can walk through the numbers for your specific furnace and usage.