Can I get central air conditioning in my house?

The short answer for most residential properties is yes. If you're uncertain, just give us a call or get in touch to confirm. Central air conditioning is far superior to other methods of whole house cooling and will save you money in the long term while bringing you comfort during the hot months.

When should I replace my AC?

Typically, we recommend AC replacement when the air conditioning unit has become older than 10 to 15 years and is not worth putting money into repairs. Like any appliance, most AC units have an expected lifetime of 10 to 20 years, lasting around 10 years on average.

How much does an AC replacement cost?

A regular AC replacement ranges from around $6,200 to $7,800. On average, our customers spent around $6,400 for AC replacement in Denver in 2025. AC installation and replacement costs can vary widely between projects.

Can you repair an old AC?

We can definitely try. We ask that you keep in mind that as the AC unit ages, more and more parts can start failing randomly. We charge $120 to check the unit and provide all options. If you just want a replacement quote for your AC, it's a free estimate.

How much do you charge for a replacement quote?

It's a free estimate to provide replacement or installation pricing for air conditioning with UniColorado. If you want your unit checked & repaired, the cost to come out is $120.

I'm not sure about replacing my AC

If you're not sure you need a replacement on a non-functional unit, we can check your unit out with a service call that costs $120. Our technician will fully check the unit and provide options. If the unit is repairable, we will provide options. Keep in mind that as units pass the 15 year old mark, parts may not be available.

I want to get a high efficiency AC

We install high-efficiency AC systems up to 20+ SEER from Carrier, Mitsubishi, and Bosch. Higher SEER means lower operating costs, though the upfront price is higher. An 18 SEER system costs $7,200-$9,600 installed. We'll walk you through the efficiency vs. cost trade-off during your free estimate so you can decide what fits your budget.

I want to get a heat pump instead of an AC

Heat pumps provide both heating and cooling in one system, which can eliminate your furnace entirely. UniColorado is the largest cold-climate heat pump installer in Colorado. We install air-source, cold-climate, and fully electric systems from Mitsubishi, Bosch, and Carrier. A heat pump typically costs more upfront than a standalone AC, but the combined heating and cooling savings can offset that. See our heat pump installation page for pricing and details.

How much does AC installation cost in Denver?

AC installation in Denver ranges from $6,200 to $9,600 depending on efficiency. A 14 SEER system costs $6,200-$7,800, a 16 SEER system costs $6,400-$9,300, and an 18 SEER system costs $7,200-$9,600. Most customers spent around $6,400 for AC replacement in 2025. Prices include indoor coil, outdoor condenser, installation, materials, and labor.

How long does AC installation take?

Most AC replacements take 6-8 hours (one day) when replacing an existing system. Fresh installations (homes that have never had central AC) take 1-2 days due to electrical circuit installation (220V/30-60A) and refrigerant line routing. Multi-story homes or complex ductwork modifications can add time. We complete permits, install, test, and clean up. Your AC is cooling the same day for most replacement jobs.

What size AC do I need for my Denver home?

For a typical 1,500 sq ft home, you'll need a 2-2.5 ton (24,000-30,000 BTU) AC unit. A 2,000 sq ft home typically needs 2.5-3 tons (30,000-36,000 BTUs). A 2,500 sq ft home needs 3-3.5 tons. Proper sizing depends on insulation, window area, sun exposure, ceiling height, and Denver's altitude (5,280 ft). Oversized units cycle too frequently; undersized units struggle to cool. We perform Manual J load calculations during your free estimate.

When is the best time to install a new AC in Denver?

Late winter or early spring (March-April) is the best time to install a new AC in Denver. You'll avoid the summer rush, often get better scheduling availability, and can complete the install before the hot weather hits.

What is the $5,000 rule for AC replacement?

The $5,000 rule is a quick way to decide between AC repair and replacement. Multiply the age of your unit (in years) by the repair cost. If the result exceeds $5,000, replacement is usually the better investment. For example, a 12-year-old AC needing a $450 repair equals $5,400, so replacement makes more financial sense. This isn't a hard rule, but it's a useful starting point. Other factors matter too: R22 refrigerant phase-out, parts availability, and whether the repair is the first or fourth one this year.

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AC Installation and Replacement

Serving Denver, COServing Centennial, COServing Littleton, COServing Castle Pines, COServing Greenwood Village, COServing Lone Tree, COServing Castle Rock, COServing Golden, COServing Arvada, COServing Lakewood, COServing Englewood, COServing Aurora, CO

AC installation and replacement across the Denver metro area. 14-20+ SEER systems from Carrier, Mitsubishi, and Bosch. Free in-home estimates with upfront pricing. Most replacements completed in one day.

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AC Installation and Replacement

Free in-home estimateAll major brands carriedLicensed & certified installers

Appointments available this week

AC Installation in Denver Metro

Air conditioning installation by UniColorado in Denver

AC Installation and Replacement

Free estimate for installing or replacing central AC systems.

Free in-person visitTakes 15-30 minutesExpert Service

(303) 250-1000

How It Works

Brands We Install

Authorized carrier installer for air conditioning

Installation & Replacement

Central AC for Denver Homes

UniColorado is a residential AC installation contractor serving Denver, Centennial, Littleton, Castle Rock, and the surrounding metro area. We install and replace central air conditioning systems from Carrier, Mitsubishi, and Bosch, ranging from 14 to 20+ SEER efficiency ratings. Every installation includes a Manual J load calculation to properly size your system, permit coordination with your local jurisdiction, and a final inspection. If you're replacing an existing AC, most jobs are completed in one day. If your home has never had central air, we'll evaluate your ductwork, electrical panel capacity, and refrigerant line routing during a free in-home estimate.

Why a Heat Pump is the Right Choice for Your Home

Experienced Technicians

NATE-certified installers with hands-on experience across Carrier, Mitsubishi, Bosch, and all major residential AC brands. Every technician is background-checked and trained on Denver-area building codes.

100% Satisfaction Guarantee

We stand behind every AC installation. If something isn't right, we come back and make it right at no extra charge. Our Google and Yelp reviews consistently reflect that commitment.

Zero-Pressure Sales

Our estimates are free, and there's no pushy upselling. We present options, explain the trade-offs, and let you decide what fits your home and budget.

Upfront Pricing, No Hidden Fees

The price on your estimate is the price you pay. Equipment, labor, materials, taxes, permits, and rebate processing are all included. No surprise charges after the work is done.

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Our Homeowners Love Us For AC Installs

We're proud to consistently achieve 100% homeowner satisfaction. That's the UniCo way.

5.0

Google Reviews (138)

Cori A.

The only company I will use for my heating and AC needs. Always responsive, on time, polite, and friendly.

Google Review

Mark K.

I was so pleasantly surprised by how amazing my experience was with UniColorado. Thorough, honest, and personable, this company gets it. They’ve earned my business for as long as I live in Denver, and I’d like to thank them again for their great work servicing our outdoor A/C units.

Google Review

Mikayla N.

The second time this company has been out to fix something going on with our HVAC. They've really done a great job correcting issues caused by the original home builder and explaining things in detail. I won't call anyone else for our HVAC needs. 10/10 would recommend!

Google Review

Talon J.

Legitimately the best HVAC company I've ever dealt with. They did super clean work and were super professional the entire time.

Google Review

WhyUniColorado

Denver's Most Experienced AC Installation Contractor

Colorado's dry heat and intense UV put unique stress on AC equipment that coastal installers don't deal with. We size every system with a Manual J load calculation, not a tonnage-per-square-foot shortcut. Carrier, Mitsubishi, and Bosch units matched to your home's actual cooling load, all permits and inspection included, and eligible rebates applied at the time of sale.

2013

Our first hyper-heat install

2016

Early Lennox cold-climate adoption

2024

Bosch IDS Ultra install

2026

Latest cold-climate tech

30+

Municipalities

Master

Licensed & Certified

1000s+

Happy Homeowners

AC Certified

Technicians

100% Satisfaction

Guarantee

Up Front Pricing

No hidden fees

$5M+

Saved for homeowners in 2025

$9,250

Average savings

5,000+

Rebate applications submitted

AC installer checking refrigerant gauges

How It Works

AC Installation Process

Our installation starts with a property assessment where we evaluate your ductwork condition, electrical panel capacity, and condenser placement options. We then recommend an AC system sized to your home using Manual J load calculations. On installation day, our technicians handle the full scope: mounting the condenser, connecting refrigerant lines, installing or replacing the indoor coil, wiring the 220V circuit, and verifying charge levels. We pull all required permits and schedule the inspection. After installation, we walk you through thermostat programming, filter replacement schedules, and warranty documentation. The job site is cleaned before we leave.

What's Included

What does AC installation include?

Every UniColorado AC installation quote includes equipment, materials, labor, taxes, permits, and rebate processing. There are no hidden fees. Your quote is your final price. Specifically: the outdoor condenser unit, indoor evaporator coil, refrigerant line set, electrical circuit (if needed), thermostat wiring, permit fees, and a post-installation inspection. We also handle Xcel Energy rebate paperwork and apply all qualifying rebates as upfront discounts on your invoice. Most replacements are completed in a single day. Fresh installations (homes that have never had AC) may take 1-2 days depending on electrical and line set routing.

Never Had AC Before?

AC Installation Costs

Have a house that has ductwork but has never had central air conditioning before? You're looking for a "fresh" AC installation. Fresh air conditioner installation cost in Denver, CO can be as low as $6,400 including all parts and labor, but the total cost varies based on square footage, electrical panel placement and capacity, copper line routing distance, and furnace location. Most of our customers spent around $6,800 to $8,900 to install a new AC in a house that hasn't had it before in 2025. The total cost to install an AC can vary widely depending on the size of your home and the complexity of the installation. Many homes in Colorado have a gas furnace but no air conditioning; this is very common and central AC can typically be added to your existing system. If your home has no ductwork or forced-air heating system (using a boiler for heating, for example), a ductless mini-split system may be a better fit.

AC Type: 14 SEER Air Conditioning System (Coil, Condenser, Lineset, 220v Circuit)
Cost Range: $6,300 to $8,800

AC Type: 16 SEER Air Conditioning System (Coil, Condenser, Lineset, 220v Circuit)
Cost Range: $7,200 to $9,500

AC Type	Cost Range
14 SEER Air Conditioning System (Coil, Condenser, Lineset, 220v Circuit)	$6,300 to $8,800
16 SEER Air Conditioning System (Coil, Condenser, Lineset, 220v Circuit)	$7,200 to $9,500

No ductwork? See mini-split options

AnsweringYour Common Questions