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HVAC Repair in St. Louis, MO

Compare 10 local hvac repair pros. Typical service: $155–$465.

Top HVAC Repair Companies in St. Louis

  1. 1.Seliga Heating and Cooling

    5.0★ (1,863 reviews)

    5.0★ from 1863 reviews

    +13144817333Website

  2. 2.Dole Heating & Air Conditioning

    4.9★ (1,395 reviews)

    4.9★ from 1395 reviews

    +13146316900Website

  3. 3.Design Aire Heating & Cooling - St. Louis

    5.0★ (1,188 reviews)

    5.0★ from 1188 reviews

    +13149476490Website

  4. 4.Vitt Heating & Cooling

    4.9★ (564 reviews)

    4.9★ from 564 reviews

    +13143473389Website

  5. 5.T-Will Fix It

    4.9★ (195 reviews)

    4.9★ from 195 reviews

    +13147939323Website

  6. 6.Heating & Air Conditioning in St. Louis

    4.7★ (15 reviews)

    4.7★ from 15 reviews

    +13147748741

  7. 7.Heating and Cooling in St. Louis, MO

    4.4★ (7 reviews)

    4.4★ from 7 reviews

  8. 8.Tom White HVAC

    3.7★ (6 reviews)

    3.7★ from 6 reviews

    +13146500125

  9. 9.Vasill Heating and Air Conditioning

    5.0★ (1 reviews)

    5.0★ from 1 reviews

    +13143511192Website

  10. 10.A&A Heating & Air Conditioning LLC

    +13142674089Website

HVAC Repair Cost in St. Louis

Local ranges, adjusted for area wage and cost-of-living data.

ServiceTypical range in St. Louis
AC repair$155–$465/job
Seasonal tune-up$77–$207/visit
Furnace repair$155–$517/job
AC replacement$5,165–$12,396/job

HVAC Repair prices in St. Louis run about 3% above the national average, based on what this trade earns in the metro area — so neighbouring cities in the same metro see similar rates.

Quotes on this page come from 10 companies serving St. Louis, rated 4.7★ on average across 5,234 customer reviews.

St. Louis Climate & Seasonal Timing

What St. Louis's weather means for scheduling hvac repair.

Last spring frost
April 2
First fall frost
November 4
Annual precipitation
43.03"
Heating degree days
4,471
Cooling degree days
1,678
MonthLowHighPrecip
Jan23.8°39.8°2.45"
Feb27.8°45.1°2.39"
Mar37°55.4°3.36"
Apr47.3°67°4.1"
May57.4°76.8°4.8"
Jun66.7°85.3°4.34"
Jul71°89.1°4.19"
Aug69.7°88.1°3.41"
Sep61.1°80.8°3.38"
Oct49.5°68.9°3.43"
Nov39.3°55.9°4.22"
Dec28.1°42.9°2.96"

NOAA station data 1.45 miles from St. Louis.

Permits & Regulations in MO

Permit typically required

  • Missouri has no statewide HVAC contractor license — licensing is handled by cities and counties
  • Kansas City and St. Louis operate their own mechanical licensing and permitting
  • Federal EPA Section 608 certification is required to handle regulated refrigerants regardless of local licensing

License required: Local city or county mechanical license (no statewide license)

Sources: www.mo.gov

HVAC Repair FAQs for St. Louis

How much does AC repair cost in St. Louis?

AC repair in St. Louis typically runs $155-$465 per job.

When should I service my AC in St. Louis?

St. Louis averages 1,678 cooling degree days a year, so most systems get a tune-up before the first sustained heat rather than during it.

Do I need a permit for HVAC work in St. Louis, MO?

In MO, Missouri has no statewide HVAC contractor license — licensing is handled by cities and counties. Verify with the St. Louis building department before equipment is replaced.

How many HVAC companies serve St. Louis?

We track 10 HVAC professionals serving St. Louis.

How hard does St. Louis heat work an air conditioner?

Summer highs near 89F in St. Louis mean systems run long cycles for months, which is what drives the compressor and capacitor failures common here.

Does St. Louis need heating as well as cooling?

With 4,471 heating degree days against 1,678 cooling degree days, St. Louis homes need both, and sizing for one alone leaves the other uncomfortable.

Is HVAC service in St. Louis more expensive than the national average?

HVAC work in St. Louis runs about +3.3% versus the national average.

When should I switch to heat in St. Louis?

Most St. Louis homes need heat by the first frost around November 4, and winter lows near 24F set how hard it has to work.