AC Unit Installation Cost St. LouisAC Unit Installation Cost St. LouisAC Unit Installation Cost St. LouisAC Unit Installation Cost St. LouisAC Unit Installation Cost St. LouisAC Unit Installation Cost St. LouisAC Unit Installation Cost St. LouisAC Unit Installation Cost St. LouisAC Unit Installation Cost St. LouisAC Unit Installation Cost St. Louis

AC Unit Installation Cost in St. Louis, MO

Detailed pricing guide with local market adjustments and material comparisons

St. Louis Average

$3,450–$9,200

Market Tier

Large City

Cost Breakdown

AC Unit Installation Cost in St. Louis

Large City

LowAverageHigh

$3,450$6,325$9,200

Market Tier

Large City (1.15x)

Large city with competitive market and moderate-high costs

Material Cost Comparison

Condenser unit(Budget)

$2,588–$6,900

Evaporator coil(Mid-Range)

$3,450–$9,200

Refrigerant line set(Premium)

$4,830–$12,880

Factors that affect your cost

System capacity (tons)
SEER efficiency rating
Existing ductwork condition
Line set run length
Electrical panel capacity
Concrete pad for condenser
Permit requirements

Get Quotes in St. Louis

Dole Heating & Air Conditioning

Saint Louis, MO

(314) 631-6900

Jersey heating and cooling llc

Saint Louis, MO

(314) 906-7227

Welsch Heating & Cooling

Saint Louis, MO

(314) 872-8070

St Louis Heating and Cooling

Saint Louis, MO

(314) 736-3400

Founding Member

Premium spot in St. Louis

Ambassador

Lead the St. Louis community

Founding Member

Premium spot in St. Louis

View all 32 hvacs in St. Louis →

St. Louis Housing Market

Median Household Income

$55,279

Median Home Value

$185,100

Median Rent

$978/mo

Homeownership Rate

45.4%

Population

293,109

Median Year Built

1938

Source: U.S. Census Bureau, ACS 2023 5-Year Estimates

Track Your Costs

HVAC

AC Unit Installation

Date

April 2026

Cost

$6,325

Vendor

Your local pro

Warranty

10-year material warranty

St. Louis average: $3,450–$9,200

Before

Issue documented with photos

After

Repair completed, area sealed

Materials Used

Condenser unitEvaporator coilRefrigerant line setElectrical whip and disconnect

Warranty Details

10-year material warranty

Auto-Checkup Created

"AC Performance Check" — every 12 months

Added by youApril 2026

Property Health Score

Good

hvac category +15 pts(66 → 81)

Documentation19/25

Maintenance20/25

Warranty22/25

Investment21/25

Your health score is calculated based on documentation completeness, maintenance currency, warranty coverage, and investment tracking.

Track this repair in PropDoctor →

Get a Personalized Estimate

Find a HVAC tech near me

I found 32 HVAC technicians in your area. Here are the top results:

Professionals Found

32 results

Smith & Sons

Connected

HVAC technician

4.9(47)

BookQuote

J&R Home Services

HVAC technician

4.7(23)

From $95/hr

MessageView

View All in ProPortal

Log my ac unit installation in PropDoctor

I'll help you log this. I've pre-filled the details — review and submit:

Add to Property History

HVAC technician

Title:HVAC tech

Category:HVAC technician

Date:2026-04-10

Fill Form & Review

Fill Form & Submit

SmartSearch understands 51 action types across scheduling, vendor discovery, and home maintenance.

Try SmartSearch →

Cost FAQ

What is the average cost of ac unit installation in St. Louis?

The average cost of ac unit installation in St. Louis, MO ranges from $3,450 to $9,200. The final price depends on System capacity (tons), SEER efficiency rating, Existing ductwork condition.

What factors affect ac unit installation cost?

Key factors include: System capacity (tons), SEER efficiency rating, Existing ductwork condition, Line set run length, Electrical panel capacity, Concrete pad for condenser, Permit requirements. In St. Louis, local labor rates and material availability also influence pricing.

How do I get accurate quotes for ac unit installation in St. Louis?

Get at least 3 quotes from licensed professionals in St. Louis. Use Fizbo SmartSearch to find and compare local hvacs, read reviews, and request estimates — all in one place.

Explore St. Louis, MO

Homes for Salein St. Louis Rentalsin St. Louis Home Servicesin St. Louis Maintenance Guidesin St. Louis Find Professionalsin St. Louis

AC Unit Installation Cost in Nearby Cities

Florissant, MO Chesterfield, MO Belleville, IL Ballwin, MO Maryland Heights, MO Granite City, IL

AC Unit Installation Cost in St. Louis, MO

Cost Breakdown

AC Unit Installation Cost in St. Louis

Material Cost Comparison

Get Quotes in St. Louis

St. Louis Housing Market

Track Your Costs

AC Unit Installation

Property Health Score

Get a Personalized Estimate

Cost FAQ

More Cost Guides for St. Louis

Air Conditioning Repair Cost

HVAC System Installation Cost

Ductwork Repair & Cleaning Cost

Smart Thermostat Installation Cost

Explore St. Louis, MO

AC Unit Installation Cost in Nearby Cities