Same-Day Service
Most service calls handled same-day across the Denver metro — and we answer the phone 24/7.
Denver's Ductless Mini-Split Experts
Comfort for Spaces Your Current System Can't Reach
Not every room in your home gets equal treatment from your central HVAC system. Finished basements, sunrooms, garage conversions, and older Denver homes built before forced-air systems often have one thing in common: no good way to connect to existing ductwork. A ductless mini-split solves that problem directly. A slim outdoor compressor connects to one or more wall-mounted indoor air handlers through a small conduit — no major construction required. Each indoor unit has its own thermostat, so you heat or cool only the rooms you’re using. Done has been helping Denver homeowners get comfortable in problem spaces since 1999. Whether you need a single-zone unit for a master bedroom or a multi-zone system covering a whole addition, our licensed technicians will size and install it right. Explore our full range of cooling services.
- True Zone-by-Zone Control Each indoor air handler operates independently, so you're not heating or cooling empty rooms — which can meaningfully reduce energy waste.
- Minimal Installation Disruption Installation typically requires only a small hole through the wall for the conduit — no duct runs, no major drywall work, no weeks-long projects.
- Heating and Cooling in One Most mini-splits operate as heat pumps, providing both cooling in summer and efficient heating in winter — ideal for Denver's variable climate.
Do You Have a Problem Room?
Signs a Ductless Mini-Split Is the Right Solution
You may not need a whole-home system overhaul. A ductless mini-split is often the most practical fix for these specific situations.
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A Room That's Always Too Hot or Too Cold
If one room never reaches a comfortable temperature regardless of thermostat settings, it likely has inadequate airflow from your central system — or none at all.
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A New Addition or Converted Space
Room additions, finished basements, converted garages, and sunrooms rarely tie in cleanly to existing ductwork. A mini-split handles these spaces without disrupting your main system.
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An Older Home Without Existing Ducts
Many Denver homes built before the 1960s rely on radiators or have no central HVAC at all. Installing ductwork in these homes is expensive and invasive — mini-splits are the practical alternative.
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High Energy Bills from Heating or Cooling Unused Spaces
If you're conditioning rooms you rarely use just to keep one occupied room comfortable, individual zone control could reduce that waste significantly.
What We Do
Ductless Mini-Split Services from Done
From single-zone installs to multi-zone systems covering an entire floor, Done handles the full range of ductless mini-split work.
- Single-Zone Installation One outdoor unit, one indoor air handler — the straightforward solution for a single problem room, addition, or detached structure like a garage or ADU.
- Multi-Zone System Design and Installation One outdoor compressor can connect to multiple indoor units, each with independent control. We design the system layout and handle the full installation.
- Repair and Diagnostics Mini-split repairs require refrigerant handling certification and brand-specific knowledge. Our technicians are trained on major brands and carry common parts.
- Seasonal Maintenance Annual cleaning of the indoor coils and filters, outdoor unit inspection, and refrigerant level checks keep your system running efficiently season after season. Ask about our <a href='/about/care-club/'>Care Club</a>.
How It Works
Getting a Mini-Split Installed by Done
Most ductless installations can be completed in a single day. Here's what the process looks like from your first call to a comfortable room.
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Call or Book Online
Reach Done at 833-539-9153 or schedule online. We'll set up a time that works for you — no all-day appointment windows.
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On-Site Evaluation
We assess the space, discuss placement options for the indoor unit and outdoor compressor, and evaluate electrical requirements before recommending a system.
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Clear, Upfront Pricing
You get a complete quote before we pick up a tool. We'll explain any electrical work required and walk you through available financing if needed.
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Same-Day Installation and Test
Our crew mounts the indoor unit, sets the outdoor compressor, runs the conduit, connects refrigerant lines, and tests heating and cooling modes before we call the job complete.
Current Specials
Save on the work your home needs most.
Why Choose Done
Upfront Pricing
Flat-rate pricing approved before work begins — no surprises on the invoice.
Licensed & Insured
Fully licensed, bonded, and insured — plumbing, HVAC, and electrical under one roof.
Satisfaction Guaranteed
If it isn't right, we make it right — backed by our workmanship guarantee.
Stop Suffering Through a Problem Room
Call 833-539-9153 or schedule online — Done serves the entire Denver metro, 24/7.
What Our Customers Say
Don't just take our word for it — hear from our satisfied customers
★★★★★
Zach provided outstanding service today! He was friendly, professional, and took the time to explain everything about my AC in a way that was easy to understand. He answered all of my questions thoroughly and never made me feel rushed. I really appreciated how informative and helpful he was throughout the entire visit. Excellent customer service—I highly recommend !
★★★★★
Very impressed by the professionalism and knowledge of Done! Zach came out on a Sunday morning, took the time to evaluate the unit as a whole, explained the issue, and readily corrected the sensor problem with my AC/furnace. Highly recommend!
Maintenance Membership
Join the Care Club
Total home service care, on a schedule.
Members get priority scheduling, seasonal HVAC tune-ups, an annual plumbing & electrical safety inspection, and exclusive discounts — for less than the cost of a single emergency call.
- Priority scheduling
- Seasonal HVAC tune-ups
- Annual safety inspection
- Exclusive member discounts
- Free dispatch on repairs
- No long-term contracts
Frequently Asked Questions
How long does a ductless mini-split installation take?
Most single-zone installations are completed in one day. Multi-zone systems covering several rooms may take longer depending on the number of indoor units and the complexity of routing the refrigerant lines. Your Done technician will give you a realistic timeline during the on-site evaluation.
Can I install a mini-split in my garage or detached workshop?
Yes — this is one of the most common applications. Because mini-splits only need a small conduit through the wall and a dedicated electrical circuit, they work well in detached structures that would be expensive or impractical to tie into your home’s duct system.
Do ductless mini-splits work as heaters in Denver winters?
Most mini-splits operate as heat pumps and provide both cooling and heating. Modern units are rated for heating operation at low temperatures, making them viable for Denver’s winters. If your primary concern is heating an older home or addition without ducts, a heat pump system might also be worth discussing with your technician.
How often do mini-split filters need to be cleaned?
The washable filters inside the indoor air handler should typically be cleaned every four to six weeks during periods of heavy use — more often in dusty environments. This is a simple task homeowners can do themselves. The outdoor unit and refrigerant system should be inspected by a technician annually.
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