AC Installation in Martinsville, IN
A new air conditioner in Martinsville will run from June through September every year. Tell us about the house, and a licensed contractor who covers Morgan County will get in touch.
Tell us about the job
It takes about a minute.
Four months of real heat in Morgan County
Summer afternoons here average 83°F, and a new air conditioner has to hold that line from June through September. That's four months of long afternoon runs, not just a few hot weeks.
Any central air conditioner built since 2023 has to meet a federal minimum of 13.4 SEER2. That's the floor everything sold new has to clear, whatever else you decide on.
- 4 months
- June through September, your air conditioner is on duty
- 83°F
- the average summer afternoon it cools against
- 27 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 Morgan County compared with a new unit at the federal minimum.
Estimates for a typical Morgan 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.
Morgan County sets its own rule on who can do HVAC work, since Indiana leaves that to the counties and cities instead of running a state license. Whether a contractor needs a license or a registration here comes down to the county's own rule, not anything the state tracks. There's no state record to check either way.
In most cities and counties, installing a new air conditioner needs a permit from the local building office, with an inspection once the work is done. That inspection is what catches a bad connection or a unit set up wrong, not a license number.
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 the house gets, and how well it holds insulation, so there is no single number that fits every home. A contractor works this out with a load calculation, not a chart based on square footage alone. Going by size on a sticker or a neighbor's system can leave you with an air conditioner that cools fast but never pulls the humidity down, or one that runs constantly and still can't keep up on the hottest afternoons.
- Should I replace the whole system or just the outdoor unit?
- In most cases the outdoor unit and the indoor coil need to be matched, so replacing just one often means replacing both. Manufacturers pair specific outdoor units with specific coils to hit their rated efficiency, and mixing an old coil with a new condenser can mean the system never runs the way it's supposed to. A contractor can tell you whether your indoor coil and ductwork are in good enough shape to carry over, but if the outdoor unit is old enough to need replacing, the coil usually is too.
- Do HVAC contractors in Martinsville need a state license to work on my home?
- Indiana doesn't license HVAC contractors at the state level, it leaves that to individual counties and cities. Martinsville sits in Morgan County, so whether a license is required comes down to the county's own rules. Ask any contractor you're considering directly whether they hold whatever license or permit Morgan County requires.