An outdoor air conditioning condenser unit positioned beside a blue-sided house at sunset.

AC Installation in Hammond, IN

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

Tell us about the job

It takes about a minute.

Step 1 of 3: Equipment
Overhead view of a gray residential air conditioning condenser unit mounted on a concrete pad beside a house with asphalt shingle roofing.

Three months of real work, then a long rest

Summers in Hammond hit average highs of 82°F, and your air conditioner only gets June through August to do its job, three months a year. It has to keep up on those hot afternoons, then sit idle the rest of the year.

Hammond has also logged 121 damaging wind events and 32 hail storms over the past ten years, with hail as large as 2.75 inches. Any central air conditioner installed new today has to meet a federal minimum of 13.4 SEER2, so whatever goes in will already meet that baseline.

3 months
June through August, your air conditioner is on duty
82°F
the average summer afternoon it cools against
32 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 grayscale illustration of a cutaway house showing interior rooms, ductwork, an indoor air handler, and an outdoor condenser unit on a pad connected by lines.
Your air conditioner works hardest from June through August.

NOAA nClimDiv, 1991–2020 normals

Overhead view of an outdoor AC condenser unit on a concrete pad next to a house with a dark shingle roof.

Going above the federal minimum saves little here, about $20 a year.

  • A higher-efficiency unit$190 a year
  • A new unit at the federal minimum, 13.4 SEER2$210 a year

Estimates for a typical Lake 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.

Lake County sets its own rule on who can do this kind of work, and there is no state license standing behind it. Whatever protection exists here comes from the county or city office, not from any statewide list a homeowner could check. Whether a license or registration is required for this job depends on which office covers the address.

For an air conditioner install, the piece that stands in for licensing is the permit. Most cities and counties require one before the new unit goes in, and an inspection once the work is done, and that inspection is what checks the installation was done right.

Sources: Indiana Department of Workforce Development · State of Indiana

What size air conditioner does my house need?
The right size depends on your square footage, your ceiling height, how much shade your house gets, and how well it holds cool air, not just floor space alone. A unit that's too big cools the house fast but shuts off before it pulls the moisture out of the air, leaving rooms cold and clammy. A contractor will measure the house and run a load calculation to land on the right tonnage for your specific home.
Should I replace the whole system or just the outdoor unit?
In most cases you replace both the outdoor unit and the indoor coil together. The two are matched to work at a certain capacity and efficiency, and pairing a new outdoor unit with an old coil usually means you lose the efficiency gains you paid for and can shorten the life of the new equipment. A contractor can look at the age and condition of your indoor coil and tell you whether it's a fit for a new outdoor unit.
Do HVAC contractors in Hammond need a state license to work on my home?
Indiana doesn't license HVAC contractors at the state level. It leaves that decision to counties and cities, so check whether Lake County requires a license before you hire anyone.