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Ductless Mini-Split Installation and Replacement in Denver, CO

Efficient Heating and Cooling Without the Need for Ductwork

Need a better way to heat or cool a room without adding traditional ductwork? A ductless mini-split provides efficient, targeted comfort for Denver homes, additions, finished basements, home offices, garages, upper floors, and other hard-to-condition spaces.

Your Cooper Green Team provides professional ductless AC and mini-split installation throughout Denver and the surrounding metro area. We install single-zone and multi-zone systems designed around your home’s layout, comfort needs, energy goals, and budget.

Whether you are adding ductless heating and cooling for the first time or replacing an older mini-split, our team will help you compare your options and choose a system that makes sense for your Denver-area home.

Experience You Can Trust

With hundreds of thousands of successful installations across the Front Range

Efficiency That Works for You

Our high-efficiency systems have saved customers hundreds of millions in energy costs — and counting.

100% Satisfaction

Proven by Our A+ BBB Rating Since 1990

Expires September 30, 2026

Back to School 📚 Back to Comfort 🏡

If your HVAC system is showing its age, now is the perfect time to upgrade before cooler weather arrives.

💰 Save up to $2,000 on a qualifying high-efficiency HVAC system installation.
💵 Qualify for up to $11,800 in rebates
⭐ Flexible financing available

Schedule with offer

- Valid on full, qualifying systems only

- While Supplies Last

Promotion must be presented at the time of booking. Cannot be combined with other offers; no cash value. Additional terms and restrictions may apply.

Contact us with any questions or to schedule your FREE in-home estimate.

Our Denver Ductless Mini-Split Installation Process

  • Schedule Your Free Estimate

    When you're ready to schedule a free, no-obligation estimate with the Cooper Green Team, simply give us a call at (720) 605-7270. A customer service representative will confirm a date and time that works best for your schedule.

  • Get a Professional Home Evaluation

    We will evaluate the rooms you want to condition, your home’s layout, insulation, windows, sun exposure, electrical system, and existing heating and cooling equipment. This assessment helps us determine the correct system capacity, number of zones, indoor-unit locations, and installation requirements.

  • Compare Ductless System Options

    Your Project Manager will explain suitable single-zone and multi-zone systems, energy-efficiency ratings, indoor unit styles, system features, warranties, financing options, and available rebates. You will receive a clear estimate based on your home and the installation option you select.

  • Let Our Team Install Your System

    Our installation team will arrive with the necessary equipment and protect your home throughout the project. We use drop cloths, wear shoe covers, and keep the work area clean and organized. Your installation may include: Mounting the indoor and outdoor equipmentRouting refrigerant and condensate linesCompleting necessary electrical workInstalling system controlsTesting airflow and operationConfirming that each zone heats and cools correctly

  • Learn How to Use Your New Mini-Split

    Before leaving, we will show you how to control the system, adjust each zone, clean accessible filters, and use important comfort and efficiency settings. Your Cooper Green Team is also available for future ductless maintenance, repairs, troubleshooting, and replacement.

Protect Your Mini-Split With the Green Club

Regular mini-split maintenance helps protect system efficiency, airflow, comfort, and equipment life. It also gives a technician an opportunity to identify developing issues before they lead to more expensive repairs.

Green Club members receive benefits that include:

  • Two heating and cooling tune-ups per year
  • Reduced emergency service fees
  • A 10% discount on qualifying repairs and installations
  • A one-year labor warranty on repairs
  • Year-round maintenance support for essential home systems
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"All aspects of this project have surpassed my expectations…"

Great service from all involved. Mini-split heat pump installation with a complicated path that needed to be figured out for the 220v line. Beginning with the solution consultation, the estimate, then the equipment installation and electrical work, and not to overlook the exemplary communications—phone, email, text, and follow-up by your administrative staff—all aspects of this project have surpassed my expectations. Take a bow, Cooper team!

—Phil L. | Colorado Homeowner

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What Affects Ductless Mini-Split Installation Cost in Denver?

System Efficiency

Higher-efficiency and cold-climate mini-splits often cost more upfront than standard systems. However, they may provide better performance during Denver’s hot summers and cold winters, along with more consistent comfort and lower energy use over time.

Your Project Manager can help you compare efficiency ratings, heating performance, equipment features, and potential long-term savings.

Home Size and Number of Zones

A single-zone mini-split designed for one room typically costs less than a multi-zone system serving several bedrooms, living areas, or floors.

Each additional indoor unit may increase the amount of equipment, labor, refrigerant line, drainage, and electrical work required. The final system design will depend on your home’s layout, square footage, insulation, and comfort needs.

System Upgrades and Installation Modifications

Your ductless system can be customized with different features and indoor unit styles.

The more equipment, upgrades, or installation modifications your project requires, the higher the total cost may be.

Ask us for more details!

Looking for a more accurate estimate for your ductless AC installation?

Just call the Cooper Green Team. We'll send over an experienced Project Manager to review your home's heating and cooling needs, and then provide an honest estimate for your ductless AC installation.
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Ductless Mini-Split FAQs

The terms are often used interchangeably. A ductless air conditioner provides cooling, while a ductless mini-split heat pump can provide both heating and cooling. Your estimate will explain the type of system being recommended.

Yes. Mini-splits can be an effective solution for Denver homes, particularly homes without ductwork, older properties with boiler heat, additions, finished basements, upstairs rooms, and areas with uneven temperatures.

The equipment must be properly selected and sized for Denver’s seasonal temperatures.

Cold-climate mini-split heat pumps can provide heat during low outdoor temperatures. Actual performance depends on the equipment, system design, insulation, home layout, and heat loss.

Some Denver homeowners use mini-splits as their main heating system. Others use them alongside a furnace, boiler, or another backup heat source.

In some homes, yes. A properly designed multi-zone mini-split system may provide cooling throughout the home.

In other homes, a single-zone system works best as supplemental cooling for an addition, upper floor, bedroom, home office, or another difficult-to-condition area.

Yes. Many older Denver homes were built without central air conditioning or use boilers and radiators for heat. A ductless mini-split can add cooling without requiring extensive ductwork or major remodeling.

Yes. Ductless systems are frequently installed in Denver basements because they provide targeted comfort without extending the home’s existing duct system.

The correct system size will depend on the basement layout, insulation, windows, and how the space is used.

Yes. Mini-splits are commonly used in home additions, converted garages, workshops, sunrooms, attic spaces, detached offices, and accessory dwelling units.

The number of indoor units depends on your floor plan, the number of enclosed rooms, square footage, insulation, door placement, and comfort goals.

A large open area may need one indoor unit. Multiple enclosed rooms may require separate zones.

Most ductless systems require a dedicated electrical circuit. Requirements vary by the system’s voltage, capacity, and manufacturer.

We will evaluate your panel and include necessary electrical work in the project estimate.

The installation timeline depends on the number of zones, equipment locations, electrical requirements, and overall complexity.

A straightforward single-zone installation will typically require less time than a multi-zone system serving several rooms.

Ductless systems should receive routine professional maintenance. Homeowners should also clean or replace accessible filters according to the manufacturer’s recommendations.

Regular service helps protect efficiency, airflow, indoor air quality, and system life.

The price depends on system capacity, efficiency, number of indoor units, electrical needs, equipment style, and installation complexity.

Because every Denver home is different, a free in-home estimate will provide a more reliable price than a broad online range.

Qualifying high-efficiency mini-split heat pumps may be eligible for utility rebates, tax incentives, or other savings programs.

Eligibility depends on factors such as equipment specifications, installation date, utility provider, and program requirements.

The Cooper Green Team installs ductless AC and mini-split heat pump systems throughout Denver and the surrounding metro area, including:

  • Arvada
  • Aurora
  • Boulder
  • Broomfield
  • Centennial
  • Englewood
  • Golden
  • Highlands Ranch
  • Lakewood
  • Littleton
  • Northglenn
  • Thornton
  • Westminster
  • Wheat Ridge
  • Nearby Colorado Front Range communities

Benefits of Ductless Heating and Cooling

Individual Room and Zone Control: Mini-splits allow you to control the temperature in individual rooms or areas. You do not have to rely on one central thermostat to keep every part of your home comfortable.

No Traditional Ductwork Required: A ductless system can add heating and cooling without the cost and disruption of installing an entirely new duct system.

Heating and Cooling From One System: A ductless heat pump can provide air conditioning during the summer and heat during colder months. We can help you select equipment appropriate for Denver’s climate and your home’s heating requirements.

Flexible Indoor Unit Options: Indoor mini-split units are available in wall-mounted, floor-mounted, and ceiling-mounted styles. Your Project Manager will help you select locations that support comfort, airflow, accessibility, and appearance.

Better Comfort in Difficult Rooms: Ductless systems can help solve hot bedrooms, cold basements, uncomfortable home offices, and upper floors that your central HVAC system cannot adequately reach.

High-Efficiency Performance: Modern inverter-driven systems can adjust their output as indoor conditions change. This helps the system maintain steadier temperatures instead of repeatedly turning fully on and off.

Proper sizing and professional installation are essential for achieving the comfort and efficiency your system was designed to provide.

Ductless Mini-Split Tips for Denver Homeowners

Learn more about ductless air conditioners by reading Cooper's blogs on the topic!

Is Ductless Air Conditioning Right for Me?

More and more homeowners are opting for ductless air conditioners as their cooling solution of choice. Ductless AC units, also known as mini-split units, consist of both indoor and outdoor components. If you’re considering switching to ductless air conditioning, it’s important to carefully evaluate its pros and cons.

Read More

Air Conditioning Systems: Ducted vs. Ductless

Ductless versus ducted is among the most fundamental differences in AC design. Often referred to as central air, a ducted system moves cooled air through ducts where it eventually enters rooms through registers. Often referred to as a mini-split, a ductless system sends cooled air directly to one or more blowers that are installed strategically throughout your home.

Read More

Schedule Ductless Mini-Split Installation in Denver

Get heating and cooling designed around the rooms you actually use.

Your Cooper Green Team has served Denver-area homeowners since 1978. We provide free in-home estimates, clear recommendations, professional ductless installation, flexible financing options, and a 100% Satisfaction Guarantee.

Hours of Operation

The Cooper Green Team is open 24 hours a day, 7 days a week.

11780 Colmans Way
Broomfield, CO 80020

(720) 605-7270

  • Denver
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  • Lakewood
  • Thornton
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