AC Installation in Centennial
Get fast, fair pricing from licensed local pros. Typical Centennial cost: $4.9k – $9.9k+ installed.
- Central AC (replace)
- $4.9k – $9.9k+
- New central AC + ducts
- $7.4k – $16k+
- Ductless mini-split
- $3.7k – $9.9k
- Permit & inspection
- $90 – $500
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AC installation cost by system.
Installed pricing for Centennial, adjusted for local labor. Higher SEER2 tiers, larger tonnage, and new ductwork add to the base.
In Centennial, Colorado, the cost of AC installation typically ranges from $4,900 to $9,900 for a like-for-like central AC replacement, and $7,400 to $16,000+ if new ductwork is needed. Ductless mini-splits run $3,700–$9,900, while heat pumps cost $6,200–$14,800+. Because most homes were built around 1983, ductwork may be undersized or leaky, affecting both cost and system choice. Local permits are required, and Colorado mandates a minimum SEER2 of 13.4 for the northern region. With cold semi-arid winters and moderate cooling demand, dual-fuel systems—pairing a heat pump with a gas furnace—are a strong fit, especially given Xcel's cold-climate heat pump rebates. The federal 25C tax credit offers up to $2,000 for qualifying heat pumps and up to $600 for high-efficiency central AC.
- Central AC, like-for-likeExisting ducts in good shape$4,900 – $9,900+
- New central AC + ductworkFirst-time or full duct replacement$7,400 – $16,000+
- Ductless mini-splitSingle or multi-zone, no ducts$3,700 – $9,900
- Heat pump (cooling + heating)Qualifies for federal & local rebates$6,200 – $15,000+
- Permit & inspectionRequired in most jurisdictions$90 – $500
* 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 Centennial
U.S. Census ACS- Households
- 43,081
- Homeowners
- 33,687
- 80% own
- Median home value
- $586,500
- Median income
- $124,617
- Median home built
- 1983
- Housing units
- 41,927
With a median home built in 1983, many Centennial 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 Centennial.
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 Centennial
Given Colorado’s cold semi-arid (cold-dry) climate and gas heating, dual-fuel (cold-climate heat pump + gas furnace) is the sensible default for most Centennial homes. A pro can confirm the right size and system for your home with a load calculation.
Sources: Colorado Energy Office - Heat Pump Tax Credit · Xcel Energy Colorado - Heat Pumps & Rebates · EIA - Colorado electricity data
What Centennial code requires
Installing or replacing an HVAC system in Centennial follows Colorado 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—
Cold-climate sizing matters: at altitude with sub-zero winters, heat pumps need a low-temp (5F) rating or gas backup; high-altitude mountain towns and Xcel offer enhanced cold-climate heat pump rebates.
Sources: Colorado Energy Office - Heat Pump Tax Credit · Xcel Energy Colorado - Heat Pumps & Rebates · EIA - Colorado electricity data
Not sure which rules and rebates apply to your home?
A licensed Centennial 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 Centennial
Colorado heating is mostly gas, which shapes the money back:
- State$1,000 upfront rebate in 2026 via registered contractorColorado Heat Pump Tax Credit (Colorado Energy Office) →
State or utility program — verify eligibility before you buy.
- StateUp to ~$2,250 per heating ton (5F) for cold-climate air-source heat pumpsXcel Energy Colorado Heat Pump Rebates →
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 Colorado.
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- 1
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- 2
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AC Installation in Centennial, explained.
What Drives AC Installation Costs in Centennial
System type and efficiency tier are the biggest cost factors: a basic central AC runs $4,900–$9,900, while a cold-climate heat pump can exceed $14,800. Home age (median 1983) often means duct modifications or replacement, adding $2,500–$6,000+. Permit fees and load calculations are required, and high-altitude sizing may necessitate a low-temp rated heat pump or gas backup. Labor rates reflect the Denver metro area's higher median income ($124,617).
Common AC Installation Issues in Centennial
Undersized or Leaky Ductwork
Many homes from the 1980s have ductwork that is too small or poorly sealed, reducing efficiency and requiring modifications or replacement.
Cold-Climate Heat Pump Sizing
At Centennial's altitude and sub-zero winter temps, heat pumps must have a low-temperature rating (e.g., 5°F) or be paired with gas backup to avoid performance issues.
Permit and Code Compliance
Colorado requires a mechanical permit for AC installation; failing to pull one can lead to fines or issues during home sale.
What to Expect During AC Installation in Centennial
A typical job starts with a load calculation to size the system correctly. For a like-for-like replacement, installation takes one to two days. If ductwork is needed, expect an extra day. The contractor will pull a permit, remove the old unit, install the new one, and test refrigerant charge and airflow. Final inspection by the local building department is required.
AC Installation FAQs — Centennial
Yes, Colorado state rules require a mechanical permit for any AC installation. Your contractor should handle the permit and schedule the inspection.
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