A close-up of a window covered in delicate ice crystal formations along its base, with snowflakes falling and blurred bare trees visible through the frosted glass.

Furnace Installation in Broomfield, CO

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

Tell us about the job

It takes about a minute.

Step 1 of 3: Equipment
A gas furnace with sheet-metal ductwork and PVC pipes installed in an unfinished basement.

Eight months of heat, and winters that test the equipment

Broomfield homes need the furnace running from October through May. That is eight months of the year, with winter nights averaging 20°F through December through February. A new furnace here has to hold up to long stretches of hard use, not just a few cold snaps.

Most homes in the area heat with gas, and any non-weatherized gas furnace built since November 2015 has to reach at least 80 percent AFUE by federal rule. Power loss is worth planning for too. Storm records for the area show 71 winter storms and 60 damaging wind events over the last ten years, and across Colorado 13 percent of households went at least 24 hours without power in 2024. A furnace that comes back on by itself when power returns matters on a night that cold.

8 months
October through May, your furnace is on duty
20°F
the average winter night it heats against
71%
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 small single-story house showing a furnace with a flue pipe through the roof and ducting running to rooms containing a sofa, chair and bed.
Your furnace works hardest from November through April.

NOAA nClimDiv, 1991–2020 normals

An unfinished basement featuring a forced-air furnace, exposed wooden ceiling joists, bare concrete walls, and miscellaneous items including cardboard boxes and coiled cables on the floor.

A high-efficiency gas furnace would save about $70 a year to run in Broomfield County compared with a gas furnace.

  • A high-efficiency gas furnace$370 a year
  • A gas furnace$440 a year

Estimates for a typical Broomfield 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?
The right size comes from a load calculation, not the square footage of your house alone. A contractor looks at your insulation, your windows, your ceiling height, and how the place is laid out, because two homes the same size can need different furnaces. Going too big wastes fuel and cycles the furnace on and off more than it should. Going too small leaves you cold on the nights that drop to 20°F, so it's worth having someone size it properly rather than guessing from a chart.
How do I know it's time to replace my furnace?
Check how old your furnace is first. A furnace that needs a repair every year, or one that leaves some rooms cold while others heat fine, is telling you it's wearing out. Runs that used to end quickly and now drag on are another sign the burner or blower isn't keeping up. With heat needed here from October through May, a furnace on its way out is not something to wait on.
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. A high-efficiency furnace burns less gas to make the same heat, and with 71 percent of homes here heating with gas, that difference shows up over eight months of the year. Every new non-weatherized gas furnace has to hit at least 80.0 percent AFUE by law, so the real question is whether to go beyond that minimum. A contractor can walk you through the options for your house and let you weigh the difference against what each unit costs installed.