Climate
Zone 5A, 4A
Cooling degree days per year, 1991–2020 normals. More means longer AC runtime and wear.
1,473
AC and furnace replacement cost in Missouri
MissouriModel estimateLocal wages, prices and climateUpdated each quarter
What it costs in Missouri
AC and furnace replacement in Missouri typically costs $11,500 for a 1,500–2,500 sq ft home. Most jobs land between $8,450 and $15,650. That is 1% below the US typical of $11,650, mainly because goods and equipment cost 4% less than average and local services cost 5% less than average. This is a model estimate from public wage, price and climate data; local prices sharpen it as people add theirs.
- Typical price
- $11,500
- Most jobs
- $8,450–$15,650
- Home size assumed
- 1,500–2,500 sq ft
- Price source
- Model estimate
- HVAC tech wage
- $28.82/hr
- Climate zone
- 5A, 4A
- Cooling degree days
- 1,473
- Minimum efficiency
- 13.4 SEER2
- Permit
- Depends on city
- Time on the job
- 1–4 days
What's in the price
How the typical price splits, at local wages and prices. A real quote should show the same parts.
Equipment · $8,750
76% of the typical price. Outdoor condenser (A2L refrigerant); Matched evaporator coil (A2L-rated); Gas furnace. Mid-range brand at the regional minimum efficiency.
Labor · $2,136
19% of the typical price. Remove old condenser, coil and furnace; recover refrigerant; Set furnace, coil and condenser; gas, venting, braze, evacuate, charge, start up. At local HVAC wages.
Materials · $36
0% of the typical price. Outdoor disconnect box (whip replaced with it).
Permit · $187
The local mechanical permit and inspection, pulled by the contractor.
Haul-away · $391
Removing the old equipment and recovering its refrigerant, as the law requires.
Read the quote line by line
A complete quote lists everything on the left. The right-hand column is what is often left off and billed later.
Should be on the quote
- Outdoor condenser (A2L refrigerant)
- Matched evaporator coil (A2L-rated)
- Gas furnace
- Remove old condenser, coil and furnace; recover refrigerant
- Set furnace, coil and condenser; gas, venting, braze, evacuate, charge, start up
- Outdoor disconnect box (whip replaced with it)
- Recover refrigerant, remove and haul away old condenser and coil
Often extra
- Refrigerant trim charge beyond factory pre-charge
- Replace refrigerant line set
- New condenser pad
- Venting conversion 80% -> 95%+
- Condensate trap / pump
- New smart thermostat (unit)
Local factors
What moves the price in Missouri
The same four facts on every place page, so two places read side by side compare the same rows.
Hot days
Days at 90°F or hotter
Including 2 days at 100°F or more, on average.
41
Electricity
State average
Residential rate. It sets what an efficient system saves you each year.
16.1¢
Permit
Depends on the city
The contractor pulls it and books the inspection.
—
Before you sign
Six things to check before you sign
Ask for model numbers
The outdoor and indoor model numbers let you check efficiency, warranty and compare quotes line for line.
13.4 SEER2 is the floor here
New systems must meet the regional minimum. Higher ratings cost more up front and save on power every summer.
Permit
Rules vary by city. Ask the contractor whether a permit applies.
Check the license
Look the contractor up in the state registry before you sign. Our quote check does it for supported states.
Rebates
The federal 25C tax credit ended for systems installed after 2025. Utility and state programs may still apply.
Timing
Replacements are cheapest to book in spring and fall, before the first heat wave or cold snap.
Price it for your home
Home size
Efficiency15.2 SEER2
Typical installed price for this home in Missouri
$11,815
Equipment
At 15.2 SEER2
$9,065
Labor
Local HVAC wages, BLS
$2,136
Materials
Disconnect and small parts. A new line set, pad or extra refrigerant is quoted separately when needed
$36
Permit
Typical local fee
$187
Haul-away
Old equipment and refrigerant recovery
$391
Cooling, per year
$21 a year less than a 14.3 SEER2 system · pays back in about 15 years
$337
Check my quote
An estimate from public wage, price and climate data, not a quote. Energy figures use local rates and weather normals.
Price financed
$11,500
Price financed
Every month
$191
Interest rate (APR)9.99%
Term84 months
If you finance it
What AC and furnace replacement costs a month
Many HVAC quotes lead with a monthly payment. Put the quoted price, rate and term here to see what the loan adds, before you compare it with paying another way.
$4,532
in interest over 84 months, on top of the $11,500 price.
A 0% promotion over 18 months would be $639 a month. Many promotions charge all the deferred interest if a balance is left when the promotion ends, so check the terms. Standard amortized loan, no fees included.
Check a financed quoteCompare
AC and furnace replacement in Missouri's metros
- 3-ton home
- 1–2 days
- Permit
$8,600–$15,950 typical $11,700
- 3-ton home
- 1–2 days
- Permit
$8,450–$15,700 typical $11,500
Questions
AC and furnace replacement: what people ask in Missouri
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HVACFIND Price Index 2026Q4.2
Updated every quarter
How much does AC and furnace replacement cost in Missouri?
Typically $11,500 for a 1,500–2,500 sq ft home. Most jobs fall between $8,450 and $15,650. Smaller homes start near $10,400; larger ones run about $12,600.
Is Missouri more expensive than average?
The typical price here is 1% below the US typical of $11,650. Local wages and prices drive most of the difference.
Is my quote fair?
Quotes between $8,450 and $15,650 are in the normal range here. Paste or upload yours into the free quote check: it compares the total, flags missing items and checks the contractor's license, all on your device.
Where do these numbers come from?
National line-item costs adjusted by local HVAC wages (BLS), regional prices (BEA), climate (NOAA) and permit fees, then corrected with real local prices as people share them. The methodology page has the details.
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