AC Installation in Derby
Get fast, fair pricing from licensed local pros. Typical Derby cost: $3.8k – $7.7k+ installed.
- Central AC (replace)
- $3.8k – $7.7k+
- New central AC + ducts
- $5.7k – $12.5k+
- Ductless mini-split
- $2.9k – $7.7k
- Permit & inspection
- $70 – $375
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AC installation cost by system.
Installed pricing for Derby, adjusted for local labor. Higher SEER2 tiers, larger tonnage, and new ductwork add to the base.
In Derby, Kansas, AC installation costs typically range from $3,800 to $7,700 for a like-for-like central AC replacement, and $5,700 to $12,500+ if new ductwork is needed. Ductless mini-splits run $2,900–$7,700, and heat pumps $4,800–$11,500+. With a median home age of 36 years, many homes may need ductwork upgrades or load calculations to ensure proper sizing. Derby's mixed-humid/cold climate (zones 4A-5A) makes a gas furnace paired with a high-efficiency AC a common choice. Mechanical permits are required locally, and SEER2 minimums (13.4 SEER2 North) apply. The federal 25C tax credit offers up to $600 for qualifying high-efficiency central AC units and up to $2,000 for heat pumps.
- Central AC, like-for-likeExisting ducts in good shape$3,800 – $7,700+
- New central AC + ductworkFirst-time or full duct replacement$5,700 – $12,500+
- Ductless mini-splitSingle or multi-zone, no ducts$2,900 – $7,700
- Heat pump (cooling + heating)Qualifies for federal & local rebates$4,800 – $11,500+
- Permit & inspectionRequired in most jurisdictions$70 – $375
* High-efficiency systems cost more upfront but may qualify for federal tax credits and utility rebates.
Pricing reviewed · Local data from U.S. Census ACS
HVAC systems in Derby
U.S. Census ACS- Households
- 10,220
- Homeowners
- 6,865
- 66% own
- Median home value
- $210,600
- Median income
- $79,581
- Median home built
- 1990
- Housing units
- 10,449
With a median home built in 1990, many Derby AC and furnace systems are at or past their 12–15 year lifespan — a common reason replacements spike here.
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What’s different about Derby.
Generic cost pages skip the things that actually decide your price and which system fits here — local code, climate, and the money you can claim back.
Recommended unit for Derby
Given Kansas’s mixed-humid / cold (iecc zones 4a-5a) climate and gas heating, high-seer2 ac + gas furnace is the sensible default for most Derby homes. A pro can confirm the right size and system for your home with a load calculation.
Sources: Evergy Heating & Cooling Discounts (Kansas) · Kansas HVAC Permit Process - Kansas HVAC Authority · EnergySage - Kansas Electricity Rates
What Derby code requires
Installing or replacing an HVAC system in Derby follows Kansas rules under the state mechanical code. Here’s what applies statewide:
- PermitRequired
Mechanical permit pulled by your licensed HVAC contractor; covers equipment, refrigerant, and the electrical disconnect.
- SEER2 minimum13.4 SEER2 (North)
Federal North-region minimum for new split-system AC. Higher tiers cut bills and unlock rebates.
- Load calculationRecommended
Sizing by load calc — not rule of thumb — prevents an oversized unit that short-cycles and never dehumidifies.
- RefrigerantR-454B / R-32 (R-410A phased down 2025+)
- Good to know—
No statewide HVAC license or building code; mechanical permits and rules are set locally by each city/county, so requirements vary by jurisdiction.
Sources: Evergy Heating & Cooling Discounts (Kansas) · Kansas HVAC Permit Process - Kansas HVAC Authority · EnergySage - Kansas Electricity Rates
Not sure which rules and rebates apply to your home?
A licensed Derby pro will walk you through code, the right unit, and what you can claim back — in one quick call.
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Money back in Derby
Kansas heating is mostly gas, which shapes the money back:
- StateUp to $1,300 (SEER2 15.2+)Evergy Kansas - Air Source Heat Pump Rebate →
State or utility program — verify eligibility before you buy.
- StateUp to $1,000 (SEER2 15.2+)Evergy Kansas - High-Efficiency Central AC Rebate →
State or utility program — verify eligibility before you buy.
- Federal30% of cost, up to $2,000Federal 25C tax credit — heat pump →
For a qualifying ENERGY STAR heat pump meeting the CEE efficiency tier. Claimed on your federal return.
- Federal30% of cost, up to $600Federal 25C tax credit — central AC →
For a qualifying high-efficiency central air conditioner.
The federal 25C tax credit (30%, up to $2,000 for a qualifying heat pump and up to $600 for a high-efficiency central AC) applies in every state, including Kansas.
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- 1
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- 2
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- 3
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AC Installation in Derby, explained.
What Affects AC Installation Cost in Derby
Prices vary based on system type (central AC, heat pump, or ductless), efficiency rating, and whether ductwork is needed. Older homes (median built 1990) may require duct modifications or load calculations. Permit fees and local labor rates also factor in. Choosing a higher SEER2 unit can qualify for federal tax credits but raises upfront cost.
Common AC Installation Issues in Derby
Undersized Ductwork
Many Derby homes built around 1990 may have ductwork designed for older, less efficient systems, requiring resizing or replacement for new AC units.
Permit and Code Compliance
Derby requires mechanical permits for AC installation; failing to pull a permit can lead to fines and issues during home sales.
Refrigerant Transition
With R-410A being phased down after 2025, new installations must use R-454B or R-32, which may require different equipment and handling.
AC Installation FAQs — Derby
Yes, Derby requires a mechanical permit for AC installation. Your contractor should handle this; costs vary but are typically included in the quote.
AC Installation near Derby
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