AC Installation in Greeley, CO
A new air conditioner in Greeley will run from June through August every year. Tell us about the house, and a licensed contractor who covers Weld County will get in touch.
Tell us about the job
It takes about a minute.
Three months of real heat, and hail to plan around
Greeley asks for cooling from June through August, with summer afternoons averaging 86°F. That is a short season, but a hot one, and your air conditioner needs to be sized to handle those three months without straining.
Weld County has seen 388 hail events over the past ten years, with hailstones as large as 4.25 inches, plus 172 damaging wind events in that same span. The outdoor unit sits exposed to all of that, so how it is installed and protected matters as much as the equipment itself. Any new central air conditioner also has to meet the federal efficiency minimum of 13.4 SEER2.
- 3 months
- June through August, your air conditioner is on duty
- 86°F
- the average summer afternoon it cools against
- 388 hail events
- in ten years, and hail bends the fins on outdoor coils
- 13.4 SEER2
- the federal minimum any new unit must meet

NOAA nClimDiv, 1991–2020 normals
A higher-efficiency unit would save about $30 a year to run in Weld County compared with a new unit at the federal minimum.
Estimates for a typical Weld County home, from EIA household energy data, Colorado fuel prices and NOAA climate normals. Your home will differ.
- What size air conditioner does my house need?
- There's no single answer without a load calculation done on your actual house. A contractor figures this using your square footage, insulation, window count and direction, and ceiling height, not just square feet alone. Going bigger than what the calculation calls for isn't a safety margin, it actually makes the unit cool the air fast and shut off before it pulls the humidity out, so the house feels clammy even at the right temperature. A properly sized system run through a Manual J calculation is the only way to get this right.
- Should I replace the whole system or just the outdoor unit?
- In most cases both the outdoor unit and the indoor coil should be replaced together. The two are matched by the manufacturer to work at a specific efficiency, and pairing a new condenser with an old coil often means the system never reaches the rating either piece was built for. It can also void the manufacturer's warranty on the new equipment. A contractor can look at the age and condition of your indoor coil and tell you whether it's worth keeping.
- Do HVAC contractors in Greeley need a state license to work on my home?
- Check for a license number before any work starts, and confirm it's current. A licensed contractor also carries the insurance that protects you if something goes wrong during installation. If you're not sure what to ask for, a contractor can show you their license and insurance before you sign anything.


