An outdoor air conditioning condenser unit mounted on a concrete pad next to a blue-sided residential house at sunset.

AC Installation in Plainfield, IN

A new air conditioner in Plainfield will run from June through August every year. Tell us about the house, and a licensed contractor who covers Hendricks County will get in touch.

Tell us about the job

It takes about a minute.

Step 1 of 3: Equipment
An outdoor central air conditioning unit mounted on a concrete pad beside a blue-sided house at sunset.

Three months of real heat in Plainfield

Summer afternoons here average 82°F, and that's the stretch your air conditioner has to answer for, June through August. It's not a year-round grind like some places see, but the unit still has to keep up on the hottest afternoons without strain.

Hendricks County has also logged 71 damaging wind events and 26 hail events over the past ten years, some with hail up to 2 inches. An outdoor unit sits exposed to that. Any new central air conditioner installed today has to meet 13.4 SEER2, the federal efficiency minimum, so whatever gets put in will clear that bar.

3 months
June through August, your air conditioner is on duty
82°F
the average summer afternoon it cools against
26 hail events
in ten years, and hail bends the fins on outdoor coils
13.4 SEER2
the federal minimum any new unit must meet
Isometric cutaway illustration of a single-story house showing interior rooms, ductwork and an air handler in the attic space, and an outdoor condenser unit connected by lines at the exterior wall.
Your air conditioner works hardest from June through August.

NOAA nClimDiv, 1991–2020 normals

An outdoor air conditioning condenser unit installed beside the exterior wall of a blue vinyl-sided house at sunset.

A higher-efficiency unit would save about $30 a year to run in Hendricks County compared with a new unit at the federal minimum.

  • A higher-efficiency unit$200 a year
  • A new unit at the federal minimum, 13.4 SEER2$230 a year

Estimates for a typical Hendricks County home, from EIA household energy data, Indiana fuel prices and NOAA climate normals. Your home will differ.

In Indiana, HVAC licensing for homes is left to the counties and cities.

Hendricks County sets its own rule for who can do HVAC work, since Indiana leaves that to the local building office rather than a state board. That means there's no state license number to check on this job. What stands between you and bad work here depends on what the county requires, and most counties in Indiana require a permit for a new air conditioner along with an inspection once it's installed.

That permit and inspection are what take the place of a license on this job. The building office reviews the installation itself, checking that the work was done right, rather than a state board checking who did it. The protection here comes from that inspection actually happening, not from any credential the contractor carries.

Sources: Indiana Department of Workforce Development · State of Indiana

What size air conditioner does my house need?
There's no single number that works for every house. The right size depends on your square footage, how much insulation you have, how many windows face the sun, and the layout of your ductwork. A unit that's too big cools the air fast but shuts off before it pulls the humidity out, so the house feels clammy. A unit that's too small runs constantly and still can't keep up on the hottest afternoons. A contractor will measure your house and calculate the load before recommending a size, and that's worth doing even if the old unit seems to have worked fine.
Should I replace the whole system or just the outdoor unit?
If your indoor and outdoor units are the same age, replace both at the same time. The coil inside and the compressor outside are matched to work together, and pairing a new outdoor unit with an old indoor coil can mean the system never runs at the efficiency it's rated for. It can also void the manufacturer's warranty on the new equipment. A contractor can check whether your indoor coil is compatible with newer refrigerant and efficiency standards before deciding, but in most cases where the system is old enough to need replacement, both parts are near the end of their life together.
Do HVAC contractors in Plainfield need a state license to work on my home?
Indiana doesn't license HVAC contractors at the state level. That's handled by the county or city instead, so whether a license is required for work in Plainfield depends on what Hendricks County has in place. Check with Hendricks County directly, or ask any contractor you're considering to show their license and insurance before they start work.