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Ductless Mini-Split Installation Cost in St. Louis, MO
Detailed pricing guide with local market adjustments and material comparisons
St. Louis Average
$2,300–$8,050
Market Tier
Large City
Cost Breakdown
Ductless Mini-Split Installation Cost in St. Louis
Large CityLowAverageHigh
$2,300$5,175$8,050
Market Tier
Large City (1.15x)
Large city with competitive market and moderate-high costs
Material Cost Comparison
Outdoor condenser unit(Budget)
$1,725–$6,038Indoor air handler(s)(Mid-Range)
$2,300–$8,050Refrigerant line set(Premium)
$3,220–$11,270Factors that affect your cost
- Number of indoor units (zones)
- BTU capacity per zone
- Single-zone vs multi-zone system
- Line set length
- Wall vs ceiling vs floor mount
- Electrical circuit availability
- Number of stories
Get Quotes in St. Louis
Dole Heating & Air Conditioning
Saint Louis, MO
(314) 631-6900Jersey heating and cooling llc
Saint Louis, MO
(314) 906-7227Welsch Heating & Cooling
Saint Louis, MO
(314) 872-8070St Louis Heating and Cooling
Saint Louis, MO
(314) 736-3400Founding Member
Premium spot in St. Louis
Ambassador
Lead the St. Louis community
Founding Member
Premium spot 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
Ductless Mini-Split Installation
Date
April 2026
Cost
$5,175
Vendor
Your local pro
Warranty
10-year material warranty
St. Louis average: $2,300–$8,050
Before
Issue documented with photos
After
Repair completed, area sealed
Materials Used
Outdoor condenser unitIndoor air handler(s)Refrigerant line setCondensate drain line
Warranty Details
10-year material warranty
Auto-Checkup Created
"Mini-Split Service" — every 12 months
Added by youApril 2026
Property Health Score
Fair
77
hvac category +10 pts(67 → 77)
Documentation19/25
Maintenance20/25
Warranty22/25
Investment21/25
Your health score is calculated based on documentation completeness, maintenance currency, warranty coverage, and investment tracking.
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Smith & Sons
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J&R Home Services
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Category:HVAC technician
Date:2026-04-04
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Cost FAQ
What is the average cost of ductless mini-split installation in St. Louis?
The average cost of ductless mini-split installation in St. Louis, MO ranges from $2,300 to $8,050. The final price depends on Number of indoor units (zones), BTU capacity per zone, Single-zone vs multi-zone system.
What factors affect ductless mini-split installation cost?
Key factors include: Number of indoor units (zones), BTU capacity per zone, Single-zone vs multi-zone system, Line set length, Wall vs ceiling vs floor mount, Electrical circuit availability, Number of stories. In St. Louis, local labor rates and material availability also influence pricing.
How do I get accurate quotes for ductless mini-split 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.