Furnace Installation in Pueblo, CO
A new furnace here will run from October through May every year. Tell us about the house, and a licensed contractor who covers Pueblo County will get in touch.
Tell us about the job
It takes about a minute.
Eight months of heat, and nights near 19 degrees
Furnaces in Pueblo County work from October through May. That's eight months of the year, and on winter nights that average 19°F, a furnace runs long hours to keep a house warm.
A new furnace here has to be built for that stretch of cold, not just a mild snap now and then. Any non-weatherized gas furnace made after November 19, 2015 has to hit at least 80 percent AFUE, and installing to that standard matters when the burner is going to run this many months a year.
- 8 months
- October through May, your furnace is on duty
- 19°F
- the average winter night it heats against
- 76%
- 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 $70 a year to run in Pueblo County compared with a gas furnace.
Estimates for a typical Pueblo County home, from EIA household energy data, Colorado fuel prices and NOAA climate normals. Your home will differ.
- What size furnace does my house need?
- A load calculation tells you, not the square footage of your house. A contractor measures your walls, windows, insulation, and ceiling height, then runs a Manual J calculation to find out how much heat your house actually loses on a cold night. Two houses the same size can need different sized furnaces depending on how they're built. Get this wrong and you either pay for capacity you don't use or end up with a furnace that runs constantly and still can't keep up when it's 19°F outside.
- How do I know it's time to replace my furnace?
- Age is the first thing to look at. Once a furnace has put in a lot of winters, repairs start costing more and happening more often. Watch for uneven heat between rooms, a furnace that cycles on and off more than it used to, or a rise in your gas bill with no other explanation. Homes here need heat from October through May, so a furnace that quits partway through that stretch leaves you without heat for months, not days, which is reason enough to replace an aging unit before it fails rather than after.
- Is a high-efficiency furnace worth it?
- It depends on how long you plan to stay in the house and how much you run your furnace. Since homes here need heat 8 months a year, a high-efficiency furnace has more chances to earn back the difference in fuel savings than it would somewhere with a short winter. Every new gas furnace sold today has to reach at least 80 percent AFUE, so the real choice is between that baseline and a higher-rated unit. A contractor can look at your gas bills and tell you what the difference would mean for your house specifically.


