AC Installation in Delaware, OH
A new air conditioner in Delaware will run from June through August every year. Tell us about the house, and a licensed contractor who covers Delaware County will get in touch.
Tell us about the job
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Three months of real heat in Delaware County
Summer here runs June through August, and afternoons average 83°F. That is the stretch your air conditioner has to handle, and it needs to handle it without strain.
Delaware County has also logged 94 damaging wind events and 12 hail storms over the past ten years, with hailstones up to 2 inches. Whatever gets installed outside, the condenser included, sits through that. Any new central air conditioner built since 2023 has to meet 13.4 SEER2, the federal efficiency minimum, so a proper installation should already be built around that standard.
- 3 months
- June through August, your air conditioner is on duty
- 83°F
- the average summer afternoon it cools against
- 12 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
Going above the federal minimum saves little here, about $20 a year.
Estimates for a typical Delaware County home, from EIA household energy data, Ohio fuel prices and NOAA climate normals. Your home will differ.
In Ohio, HVAC licensing for homes is left to the counties.
Whether a contractor needs a license for this job depends on where the house sits in Delaware County. Some counties run their own licensing and testing, others don't, so the same installation can require a license on one side of a line and not the other. Ohio does define what a home contractor is, and that definition includes carrying at least $250,000 in liability insurance. That's a floor for doing business in the state, not a test anyone passed.
For an air conditioner installation, the protection you can count on is the permit. Most cities and counties require a permit from the local building office before the work, and an inspection once it's in. That inspection is what checks the installation was done right, not a license number.
Source: Ohio Legislative Service Commission
- What size air conditioner does my house need?
- The right size depends on your home's square footage, insulation, window placement, and layout, not on the house next door. A contractor works this out with a load calculation, not a guess based on the old unit. An oversized system cools the air fast but shuts off before it pulls the moisture out, so the house feels clammy. An undersized one runs constantly and still can't keep up on the hottest afternoons. This is worth getting right before installation, not after.
- Should I replace the whole system or just the outdoor unit?
- If the indoor and outdoor units were installed together and matched, replacing only the outdoor unit usually causes problems. The coil, the airflow, and the refrigerant charge are all matched to work as a pair. Put a new high-efficiency condenser next to an old coil and you lose most of the efficiency gain, and some manufacturers will not warranty the mismatch at all. A contractor can look at the age and condition of both pieces and tell you whether the indoor coil is worth keeping. If your system is old enough that parts are hard to find, replacing both at once often makes more sense anyway.
- Do HVAC contractors in Delaware need a state license to work on my home?
- In Ohio, licensing for home HVAC work is handled at the county level, not the state. Whether a contractor needs a license to work on your house depends on where you live, so check with Delaware County directly on their requirement. Asking a contractor for their license number and insurance before work starts is a reasonable step regardless of what the county requires.