Heating and air conditioning repair in Fresno
Our guide to heating and air conditioning repair covers how the job works. Below: the Fresno numbers a HVAC contractor looks at, with sources.
Fresno housing, by the numbers
Census figures put the median year built for Fresno homes at 1980. By median year built, homes here are older than in 16 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
Roughly 50 in every 100 occupied homes in Fresno are owner-occupied. That is 90,465 of 180,450 households. Of the 56 other cities in this network, 29 have a lower share of owner-occupied homes. Owners usually decide on a replacement; renters should start with the landlord or property manager.
Source: Census ACS
Source: Census ACS
Utility gas heats about 54% of occupied homes in Fresno, the most common fuel there. Other fuels: electricity 40%, bottled or tank gas 2%, fuel oil or kerosene under 1%. Homes on that fuel need a contractor licensed and equipped for it.
Source: Census ACS
Source: Census ACS
What the weather asks of a system in Fresno
By the NOAA 1991-2020 normals, summers in Fresno add up to about 2,209 cooling degree days. Measured at the Fresno Yosemite Intl Ap (CA) station. Of the 56 other cities in this network, 43 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
NOAA's 30 year normals give Fresno roughly 2,186 heating degree days annually. Measured at the Fresno Yosemite Intl Ap (CA) station. The heating load here is higher than in 16 of the 56 other cities we cover. Winters at that level put most of the year's wear on the heating side.
Source: NOAA normals
Source: NOAA normals
Expect around 11 days a year when Fresno drops to 32 F or below, going by NOAA normals. Of the 52 other cities in this network, 7 have a lower number of freezing days.
Source: NOAA normals
Source: NOAA normals
Fresno logs roughly 113 days of 90 F heat in an average year. Of the 54 other cities in this network, 50 have a lower number of 90 F days.
Source: NOAA normals
Source: NOAA normals
Seasons and risk in Fresno
On heat wave risk, FEMA's National Risk Index puts Fresno County, CA at relatively high. 30 of the 55 other cities we cover sit in counties with the same heat wave rating. Heat waves are when an older air conditioner is most likely to fail, so a pre-season check pays off.
Source: FEMA risk index
Source: FEMA risk index
In California, HVAC contractors are licensed by the Contractors State License Board (CSLB); status can be checked on the agency's official lookup page.
Source: Contractors State License Board (CSLB) (California) · Contractors State License Board (CSLB) license information
Source: Contractors State License Board (CSLB) (California) · Contractors State License Board (CSLB) license information
Sources, checked October 2026
Local offices and rules in Fresno
Statewide, the 2025 California Building, Residential, Mechanical, Plumbing and Energy Codes (Title 24 Parts 2, 2.5, 4, 5 and 6) took effect January 1, 2026 per the California Building Standards Commission.
Source: www.dgs.ca.gov. Checked October 2026.
Source: www.dgs.ca.gov. Checked October 2026.
Southern California Gas Company's list of served communities marks the City of Fresno with a notation meaning only a portion of the city is served by SoCalGas.
Source: www.socalgas.com. Checked October 2026.
Source: www.socalgas.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
