Heating and air conditioning repair in Indianapolis

Stainless steel exterior vent louver on a stone wall

Our guide to heating and air conditioning repair covers how the job works. Below: the Indianapolis numbers a HVAC contractor looks at, with sources.

Indianapolis housing, by the numbers

The median home in Indianapolis dates from 1973, so about half the housing is that old or older. By median year built, homes here are older than in 29 of the 56 other cities we cover. Age of the house is a clue to duct leaks and insulation, which change the right system size.
Source: Census ACS
Owner households fill about 56% of the occupied homes in Indianapolis. That is 203,339 of 362,961 households. Of the 56 other cities in this network, 44 have a lower share of owner-occupied homes. If you rent, your lease likely puts heating and cooling repairs on the owner.
Source: Census ACS
Most homes in Indianapolis heat with utility gas: about 56% of occupied homes, per the Census ACS. Other fuels: electricity 42%, bottled or tank gas 2%, fuel oil or kerosene under 1%. Switching fuels is possible, but ask what it means for your panel, gas line and ducts.
Source: Census ACS

What the weather asks of a system in Indianapolis

Indianapolis averages about 947 cooling degree days a year, the NOAA measure of how hard air conditioning works. Measured at the Indianapolis Se Side (IN) station. The cooling load here is higher than in 16 of the 56 other cities we cover. That cooling load is what an air conditioner or heat pump has to keep up with on the long summer afternoons.
Source: NOAA normals
By the NOAA 1991-2020 normals, winters in Indianapolis add up to about 5,704 heating degree days. Measured at the Indianapolis Se Side (IN) station. Of the 56 other cities in this network, 45 have a lower heating load. Winters at that level put most of the year's wear on the heating side.
Source: NOAA normals
Near Indianapolis the low drops to freezing on about 120 days in a normal year. Of the 52 other cities in this network, 41 have a lower number of freezing days.
Source: NOAA normals
A normal year brings about 13 days of 90 F or hotter near Indianapolis (NOAA normals). Of the 54 other cities in this network, 8 have a lower number of 90 F days.
Source: NOAA normals

Seasons and risk in Indianapolis

FEMA's National Risk Index lists Marion County, IN as relatively high for heat wave risk. The same heat wave rating applies in 30 of the 55 other cities in this network. Extended heat is hard on compressors that are already weak.
Source: FEMA risk index
The cold wave risk for Marion County, IN is rated relatively high in FEMA's National Risk Index. The same cold wave rating applies in 19 of the 53 other cities in this network. A cold wave also stresses pipes and venting near the furnace, worth a look during a tune-up.
Source: FEMA risk index

Sources, checked October 2026

Local offices and rules in Indianapolis

Indianapolis builds under Indiana's statewide rules; the Fire Prevention and Building Safety Commission lists the 2020 Indiana Residential Code (based on the 2018 IRC) and the 2014 Indiana Building Code (based on the 2012 IBC) as currently in effect.
Source: www.in.gov. Checked October 2026.
Citizens maintains the gas meter and the line from the street to the meter, while the property owner is responsible for all gas piping after the meter.
Source: info.citizensenergygroup.com. Checked October 2026.
AES Indiana's home improvement rebates, paid through its Quality Contractor Network, are tiered for air source heat pumps at SEER 16, 17 and 18+, with a higher capped amount for the top mini-split tier.
Source: www.aesindiana.com. Checked October 2026.
Citizens Energy Group pays residential conversion rebates for a natural gas furnace and a natural gas water heater when replacing electric, oil or propane equipment.
Source: info.citizensenergygroup.com. Checked October 2026.
Electric service in Indianapolis comes from AES Indiana, which says it serves more than 500,000 customers in Central Indiana.
Source: www.aesindiana.com. Checked October 2026.
Citizens Energy Group, a locally owned utility, supplies natural gas in Indianapolis as part of its gas, thermal energy, water and wastewater services to about 900,000 people in the area.
Source: info.citizensenergygroup.com. Checked October 2026.
If you smell gas, leave the house and call your gas utility from outside. Keep a working carbon monoxide alarm near the bedrooms, and do not open a furnace cabinet that is running.

Common jobs

Warm air rising from a floor register in a winter living room