AC Installation in London
Get fast, fair pricing from licensed local pros. Typical London cost: $3.2k – $6.5k+ installed.
- Central AC (replace)
- $3.2k – $6.5k+
- New central AC + ducts
- $4.8k – $10.5k+
- Ductless mini-split
- $2.4k – $6.5k
- Permit & inspection
- $60 – $325
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AC installation cost by system.
Installed pricing for London, adjusted for local labor. Higher SEER2 tiers, larger tonnage, and new ductwork add to the base.
For homeowners in London, Ohio, AC installation costs typically range from $3,200 to $10,500 depending on the system type and scope of work. With a median home age of 54 years, many homes require ductwork modifications or new duct systems, which can push costs higher. London's mixed-humid climate means moderate cooling demand, and most homes use gas heating, making a central AC with a gas furnace a practical choice. All installations must comply with the Residential Code of Ohio and local permitting requirements, which vary by jurisdiction within Madison County. The federal 25C tax credit offers up to $600 for qualifying high-efficiency central AC units, helping offset costs.
- Central AC, like-for-likeExisting ducts in good shape$3,200 – $6,500+
- New central AC + ductworkFirst-time or full duct replacement$4,800 – $10,500+
- Ductless mini-splitSingle or multi-zone, no ducts$2,400 – $6,500
- Heat pump (cooling + heating)Qualifies for federal & local rebates$4,000 – $9,700+
- Permit & inspectionRequired in most jurisdictions$60 – $325
* 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 London
U.S. Census ACS- Households
- 4,126
- Homeowners
- 2,855
- 60% own
- Median home value
- $174,600
- Median income
- $58,040
- Median home built
- 1972
- Housing units
- 4,755
With a median home built in 1972, many London 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 London.
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 London
Given Ohio’s mixed-humid climate and gas heating, high-seer2 ac + gas furnace is the sensible default for most London homes. A pro can confirm the right size and system for your home with a load calculation.
Sources: AEP Ohio Savings / Rebates · Duke Energy Ohio HVAC Replacement Rebate · Ohio Administrative Code 4101:8-14 (Residential Mechanical)
What London code requires
Installing or replacing an HVAC system in London follows Ohio 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—
Work follows the Residential Code of Ohio / Ohio Mechanical Code; permit + post-install inspection required, but permitting is handled by local city/county building departments so requirements vary by jurisdiction.
Sources: AEP Ohio Savings / Rebates · Duke Energy Ohio HVAC Replacement Rebate · Ohio Administrative Code 4101:8-14 (Residential Mechanical)
Not sure which rules and rebates apply to your home?
A licensed London pro will walk you through code, the right unit, and what you can claim back — in one quick call.
No obligation — talk through your options.
Money back in London
Ohio heating is mostly gas, which shapes the money back:
- State$300+ for air-source heat pumps, up to $1,200 for geothermalAEP Ohio Residential Energy Efficiency Rebates (air-source/ductless/geothermal heat pumps) →
State or utility program — verify eligibility before you buy.
- StateVaries by qualifying high-efficiency equipmentDuke Energy Ohio HVAC Replacement 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 Ohio, subject to current federal eligibility.
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- 1
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- 2
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- 3
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AC Installation in London, explained.
What Affects AC Installation Cost in London
The main factors influencing price are system type (central AC vs. heat pump vs. ductless mini-split), whether ductwork needs to be added or replaced (common in older homes), and the efficiency rating. Labor and permit fees also vary by local contractor and jurisdiction. The federal tax credit can reduce costs for qualifying high-efficiency units, but eligibility depends on specific SEER2 ratings and model certifications.
Common AC Installation Issues in London
Aging Ductwork
Many London homes built around 1972 have undersized or deteriorating ducts that need replacement or modification for new AC systems.
Permit and Code Compliance
Local permitting requirements vary by jurisdiction; failing to obtain a permit can lead to fines or issues during home sale.
Refrigerant Transition
With R-410A being phased out, new systems use R-454B or R-32, which may affect equipment availability and service costs.
AC Installation FAQs — London
Yes, a mechanical permit is required by the Residential Code of Ohio. However, permitting is handled by local city or county building departments, so requirements vary by jurisdiction within Madison County.
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