Heating and air conditioning repair in Pittsburgh
Our guide to heating and air conditioning repair covers how the job works. Below: the Pittsburgh numbers a HVAC contractor looks at, with sources.
Homes in Pittsburgh
Around half of the homes in Pittsburgh went up in 1942 or before, according to the Census ACS. By median year built, homes here are older than in 53 of the 56 other cities we cover. Older homes here often have ducts and venting that were sized for a different system.
Source: Census ACS
Source: Census ACS
About 48% of occupied homes in Pittsburgh are lived in by their owners. That is 65,856 of 138,188 households. The share of owner-occupied homes here is higher than in 26 of the 56 other cities we cover. Owners usually decide on a replacement; renters should start with the landlord or property manager.
Source: Census ACS
Source: Census ACS
Utility gas is the leading heating fuel in Pittsburgh, covering about 75% of occupied homes. Other fuels: electricity 21%, bottled or tank gas 2%, fuel oil or kerosene under 1%. The fuel decides which contractor skills matter: gas lines and venting, or heat pump and electrical work.
Source: Census ACS
Source: Census ACS
Pittsburgh climate, by the numbers
Pittsburgh averages about 826 cooling degree days a year, the NOAA measure of how hard air conditioning works. Measured at the Pittsburgh Allegheny Co Ap (PA) station. Of the 56 other cities in this network, 13 have a lower cooling load. More cooling degree days means more run hours, which is where worn capacitors and dirty coils show up first.
Source: NOAA normals
Source: NOAA normals
Winter heating load in Pittsburgh runs to roughly 5,406 heating degree days in a normal year (NOAA 1991-2020 normals). Measured at the Pittsburgh Allegheny Co Ap (PA) station. The heating load here is higher than in 41 of the 56 other cities we cover. Heating load like that decides whether a heat pump alone is enough or a furnace backup makes sense.
Source: NOAA normals
Source: NOAA normals
Lows at or below 32 F come on roughly 106 days a year around Pittsburgh. Of the 52 other cities in this network, 38 have a lower number of freezing days.
Source: NOAA normals
Source: NOAA normals
Highs of 90 F and up come on roughly 8 days a year around Pittsburgh. The number of 90 F days here is higher than in 3 of the 54 other cities we cover.
Source: NOAA normals
Source: NOAA normals
When the weather tests homes in Pittsburgh
FEMA's National Risk Index lists Allegheny County, PA as relatively moderate for heat wave risk. The same heat wave rating applies in 13 of the 55 other cities in this network. During a heat wave contractors book up; a tune-up in spring avoids the rush.
Source: FEMA risk index
Source: FEMA risk index
FEMA's National Risk Index rates cold wave risk in Allegheny County, PA as very high. The same cold wave rating applies in 16 of the 53 other cities in this network. Frozen weather is when a furnace that limped through fall finally quits.
Source: FEMA risk index
Source: FEMA risk index
Sources, checked October 2026
Local offices and rules in Pittsburgh
PLI regulates one- and two-family dwellings under the International Residential Code and other structures under the International Building Code, as part of the Pennsylvania Uniform Construction Code, which adopted the 2018 I-Code series effective February 14, 2022 and has a Triennial Update effective January 1, 2026.
Source: www.pa.gov. Checked October 2026.
Source: www.pa.gov. Checked October 2026.
Peoples Gas, which serves Allegheny, Washington and Greene counties, is a natural gas utility for the Pittsburgh area.
Source: www.peoples-gas.com. Checked October 2026.
Source: www.peoples-gas.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
