AC Installation in Delta, CO
A new air conditioner in Delta will run from July through August every year. Tell us about the house, and a licensed contractor who covers Delta County will get in touch.
Tell us about the job
It takes about a minute.
Delta doesn't ask much of an air conditioner, but the summer heat still counts
Cooling season here runs July and August, about two months a year. Summer afternoons average 82°F, which is warm enough that a new system still needs to be sized right for your house, even if it isn't running for most of the year.
Any central air conditioner installed new has to meet 13.4 SEER2, the federal efficiency minimum. That's the floor, not a special upgrade, so it's worth asking what a contractor is installing above that line.
- 2 months
- July through August, your air conditioner is on duty
- 82°F
- the average summer afternoon it cools against
- 13.4 SEER2
- the federal minimum any new unit must meet

NOAA nClimDiv, 1991–2020 normals
Going above the federal minimum saves little here, about $20 a year.
Estimates for a typical Delta 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?
- The right size comes from a load calculation, not the size of your old unit or the square footage alone. A contractor looks at your insulation, your windows, and how much sun your walls and roof take on before they land on a number. An oversized unit will short cycle, cooling the air fast but never running long enough to pull the moisture out, so the house feels damp even when it hits the thermostat setting. Get the calculation done rather than guessing, since a unit that is too big causes as many problems as one that is too small.
- Should I replace the whole system or just the outdoor unit?
- In most cases you replace the outdoor unit and the indoor coil together. The two are matched to run at a specific capacity and efficiency, and pairing a new outdoor unit with an old coil usually means you lose the efficiency gain you paid for, and it can void the warranty. A contractor can check whether your ductwork will still work with a new system, but plan on treating the compressor and coil as a set.
- Do HVAC contractors in Delta need a state license to work on my home?
- Yes, anyone installing or servicing central air conditioning in your home needs a state contractor license. Ask to see the license number before work starts, and check that it covers HVAC work specifically. A licensed contractor also carries the insurance that protects you if something goes wrong during the install.


