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4.7 Google rating from 432 reviews
AC Installation in Highlands Ranch, CO
Options side by side in writing, then your decision.
- HVAC diagnostic: $99.95
- Price before any work starts
- Written guarantees
AC Installation and Replacement in Highlands Ranch
Summit Heating, A/C, Plumbing & Electrical installs and replaces central air conditioners for homeowners across Highlands Ranch. It’s for households whose AC has quit or is near the end, and for homes adding central air for the first time. You see the options laid out in writing: a minimum-efficiency AC, a higher-efficiency model, or a heat pump. Then you choose, without a hard sell.
Call (720) 870-1580 to schedule a replacement estimate. If your current AC has stopped working, the visit starts as an HVAC diagnostic: $99.95. Your technician reviews the estimate with you, and you can approve it on the spot or later through a link.
Call (720) 870-1580 to schedule a replacement estimate. If your current AC has stopped working, the visit starts as an HVAC diagnostic: $99.95. Your technician reviews the estimate with you, and you can approve it on the spot or later through a link.
When AC Replacement Makes More Sense Than Repair
- The old AC has failed and the repair doesn’t add up. We show you the AC repair price first when the repair is real. Existing R-410A systems can legally be repaired. EPA rules affect new equipment.
- You’re replacing the furnace. A new furnace is a natural time to match the AC and coil to it.
- You’ve never had central air. If your ducts can carry it, central AC can be added. If not, a ductless mini-split cools rooms without ducts. We don’t build ductwork.
- You’d rather heat and cool with one system. See heat pump installation.
What's Included in a New Central Air Installation
Assessment
Existing system, the furnace and coil the AC pairs with, the electrical supply
Options
Minimum, higher-efficiency and heat pump options in writing
Permit
Douglas County mechanical permit, filed online through e-permits
Installation
Condenser, coil, refrigerant lines, disconnect with code-required GFCI protection
Startup
We start the system, check it runs, clean the work area
Inspection
Douglas County inspects the finished work
SEER2 Minimums and Refrigerant Rules for a New AC
Colorado sits in the federal North region. A new split AC must reach 13.4 SEER2, and there’s no regional EER2 requirement here. We price the minimum next to higher-efficiency models so you can see what the extra money buys.
Most manufacturers have moved new residential equipment to R-454B, an A2L refrigerant, and R-32 is also used. New systems made or imported from Jan 1, 2025 must meet the EPA’s GWP 700 limit. Systems whose components were all made before 2025 may still be installed.
Most manufacturers have moved new residential equipment to R-454B, an A2L refrigerant, and R-32 is also used. New systems made or imported from Jan 1, 2025 must meet the EPA’s GWP 700 limit. Systems whose components were all made before 2025 may still be installed.
Douglas County Permits for AC Replacement
Highlands Ranch is unincorporated Douglas County, so a new or replacement AC needs a mechanical permit from the Douglas County Building Division in Castle Rock. Mechanical permits are filed online through the county’s e-permits system, and we file yours. The county has worked under the 2024 International codes since July 1, 2026.
On the electrical side, the county uses the 2023 NEC until a newer edition takes effect on Jan 1, 2027. Under the 2023 NEC, new outdoor AC equipment has needed code-required GFCI protection since Sept 1, 2026. (Douglas County, checked Nov 2026.)
Whether the condenser sits in a BackCountry side yard near Mountain Vista High School or behind a house near Daniels Gate Park in 80130, the permit route is the same.
On the electrical side, the county uses the 2023 NEC until a newer edition takes effect on Jan 1, 2027. Under the 2023 NEC, new outdoor AC equipment has needed code-required GFCI protection since Sept 1, 2026. (Douglas County, checked Nov 2026.)
Whether the condenser sits in a BackCountry side yard near Mountain Vista High School or behind a house near Daniels Gate Park in 80130, the permit route is the same.
AC Installation Cost Factors in Highlands Ranch
- Efficiency level: a 13.4 SEER2 unit costs less than a higher-efficiency one
- AC or heat pump
- Matching the coil and furnace
- The disconnect and GFCI protection the code requires
- The Douglas County permit and inspection
Financing is available through Service Finance Company, LLC, subject to credit approval. See terms when you apply. Ask about our maintenance memberships.
AC Installer Credentials and Homeowner Reviews
Our credentials: Lennox Premier Dealer, Lennox Centurion Award, Mitsubishi Diamond Contractor, and NATE-certified technicians.
“Excellent work, clean install.”
John, Google review of a heating and AC replacement
Our Google rating is 4.7 from 432 reviews.
“Excellent work, clean install.”
John, Google review of a heating and AC replacement
Our Google rating is 4.7 from 432 reviews.
Our Written Guarantees on Every AC Installation
Related Heating and Cooling Services Near Highlands Ranch
HVAC Services Related to AC Installation
AC Installation Questions from Highlands Ranch Homeowners
How much does a new AC cost in Highlands Ranch?
It depends on the efficiency level, whether you choose an AC or a heat pump, the coil and furnace match, and the permit. Your technician reviews a written estimate with you, and you can approve it on the spot or later.
What is the minimum efficiency for a new AC in Colorado?
Colorado is in the federal North region, where a new split AC must reach 13.4 SEER2. We price that minimum next to higher-efficiency options.
Do I need a permit to replace my AC in Highlands Ranch?
Yes. Douglas County’s mechanical permit covers the replacement or addition of an air conditioner. We file it online through the county’s e-permits system and the county inspects the work.
Is there an Xcel rebate for a new central AC?
No. Xcel’s central AC rebates ended for invoices dated after Jan 1, 2024. Xcel rebates may apply to heat pumps, and we confirm current amounts with your quote.
Can I still get an R-410A air conditioner?
Systems whose components were all made before Jan 1, 2025 may still be installed. Most new equipment uses R-454B or R-32, and we explain the options in your estimate.
Is financing available for a new AC?
Yes. Financing is available through Service Finance Company, LLC, subject to credit approval. See terms when you apply.
Schedule AC Installation in Highlands Ranch
Call (720) 870-1580 to schedule a replacement estimate, or request service at /get-a-quote/.