A snow-covered two-story house photographed at night during a snowstorm, with one lit upper window and bare trees on either side.

Furnace Installation in Liberty, MO

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

Tell us about the job

It takes about a minute.

Step 1 of 3: Equipment
A bare concrete basement containing a gray gas furnace with metal ductwork and a vertical flue pipe, lit by a single hanging bulb.

Liberty asks a furnace to run seven months a year

October through April, a furnace here is the thing standing between your house and 22 degree nights. That's most of the year spent working, not a few cold snaps to get through.

Most homes in Liberty heat with gas, and any new gas furnace has to meet the federal minimum of 80 percent AFUE. Clay County has also logged 9 winter storms and 116 damaging wind events over the past ten years, and close to a fifth of Missouri households lost power for 24 hours or more in 2024. A new furnace should be sized and installed to handle a full heating season here, not just a mild one.

7 months
October through April, your furnace is on duty
22°F
the average winter night it heats against
67%
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 single-story house in gray tones, showing interior rooms with furniture, ceiling ductwork, and an exterior furnace unit with a tall flue pipe.
Your furnace works hardest from November through March.

NOAA nClimDiv, 1991–2020 normals

An unfinished concrete basement containing a gas furnace with sheet-metal ductwork, utility shelving, and exposed overhead joists.

A high-efficiency gas furnace would save about $180 a year to run in Clay County compared with a gas furnace.

  • A high-efficiency gas furnace$810 a year
  • A gas furnace$990 a year

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

What size furnace does my house need?
It depends on your home's square footage, ceiling height, insulation, window count, and layout, so there isn't one number that fits every house. A contractor works this out with a load calculation, not a chart based on square footage alone. Getting this wrong in either direction causes real problems, an oversized furnace cycles on and off too often, and an undersized one will struggle on the coldest nights when it's 22°F outside. Ask whoever quotes the job to walk through the load calculation with you rather than just naming a number.
How do I know it's time to replace my furnace?
Watch for rooms that won't heat evenly, a furnace that runs longer than it used to, or repairs that keep coming back. An older furnace works harder to keep up than it did when it was new, and with heat needed here from October through April, seven months of the year, that wear adds up fast. If a contractor has already been out more than once this season for the same problem, that's usually the sign to stop repairing and start pricing a replacement.
Is a high-efficiency furnace worth it?
Every new non-weatherized gas furnace sold today has to hit at least 80 percent AFUE by law, so the real question is whether it's worth paying for something higher than that. With heat running seven months a year here, more of the fuel you burn turns into heat you actually use instead of going out the vent. Whether the higher equipment cost makes sense for your house is something a contractor can lay out for you once they know your home and your current setup.