HVAC Installation in Denver, CO
A new system here will heat from October through May and cool from June through August every year. Tell us about the house, and a licensed contractor who covers Denver County will get in touch.
Tell us about the job
It takes about a minute.
Denver asks a lot of a heating and cooling system
Winter nights here average 19°F from December through February. Whatever you install has to bring a cold house back up to temperature on those nights, again and again, for eight months of heating, October through May. Cooling takes over for June through August, when afternoons average 87°F. Eleven months a year, one system or the other is working.
Most homes here heat with gas, but whatever fuel yours uses, the equipment has to be sized for that 19°F low and that 87°F high, not just for a mild day in between. The area has logged 32 winter storms and 64 damaging wind events over the past ten years, and 13% of Colorado households lost power for at least 24 hours in 2024. A furnace with a standing pilot will relight itself when the power comes back. One with an electronic igniter will not, and someone has to turn it back on.
- 8 months
- October through May, your system heats
- 3 months
- June through August, it cools
- 19°F
- the average winter night it heats against
- 87°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
- When should I replace my HVAC system?
- Replace it when repairs start happening every year, or when the system struggles to keep the house comfortable on the hardest days. A furnace that's losing efficiency is one that's closer to failing on a night near 19°F than on a mild one. Rising utility bills with no other explanation are another sign the equipment is wearing out. If a contractor has already been out more than once this year, ask them straight whether repair still makes sense.
- Should I replace my furnace and air conditioner at the same time?
- If both are old, yes, and it's worth planning for even if only one has failed. They're matched to work together, and pairing new equipment with an aging unit can mean the newer piece never runs at its rated efficiency. Homes here need heat eight months a year and cooling three, so both units log real hours every year. If your furnace and AC were installed around the same time, one failing usually means the other isn't far behind.
- What happens during an HVAC installation?
- A contractor removes the old equipment, sets the new furnace or air conditioner in place, and connects it to the existing ductwork, gas line, electrical, and condensate drain. They'll check that the ducts and vents are sized right for the new unit rather than just swapping equipment one for one. Once it's connected, they test the system, check refrigerant levels or gas pressure, and confirm it's heating or cooling correctly before they leave. A contractor can walk you through the specific steps for your home and equipment.