Ductless Mini-Split
System Installation
Room-by-room heating and cooling without ductwork, from a Mitsubishi Electric Diamond Dealer and Quilt dealer. Free in-home estimates with a written, upfront price.
Ductless systems enable you to heat and/or cool your home without invasive ductwork. They also operate quietly, have a compact design, and require minimal installation. Both Heat Pump and A/C solutions are flexible, whether you’re looking to maintain comfort in one room or multiple rooms.
For installation of a ductless HVAC system and to learn more about your heating options in the Seattle-Tacoma area, call Home Comfort Alliance
For installation of a ductless HVAC system and to learn more about your heating options in the Seattle-Tacoma area, call Home Comfort Alliance
Ductless units can address the following:
Hot or cold spots in your home
Renovation challenges
A home without existing ductwork
Ductless mini-splits from Home Comfort Alliance
A ductless mini-split is a heat pump that heats and cools individual rooms without ductwork. An outdoor unit connects through a small hole in the wall to one or more indoor units, mounted on a wall, in the ceiling or on the floor. Each indoor unit has its own temperature setting and remote, so a home office can stay cooler while a bedroom stays warmer, and one system can grow to up to 8 zones. Home Comfort Alliance installs, repairs and maintains ductless systems across the Seattle-Tacoma area as a Mitsubishi Electric Diamond Dealer and Quilt dealer, and we size every installation with a room-by-room ACCA Manual J load calculation.
Ductless or ducted heat pump?
| Ductless mini-split | Ducted heat pump | |
|---|---|---|
| Needs ducts | No | Yes |
| Temperature control | Room by room | Whole home (or by zone with dampers) |
| Good fit | Baseboard or radiator heat, older homes without ducts, additions, finished attics, garages, one hot or cold room | Homes with ductwork in good shape, or replacing a furnace |
| Installation | Small wall opening for the line set; no duct work | Connects to existing ducts and an air handler or furnace |
Replacing electric baseboards? See electric baseboard to heat pump.
What does a ductless system cost?
Your price depends on the number of zones, the indoor unit style (wall, ceiling or floor), the distance between the indoor and outdoor units and any electrical work. Get a price range in about 30 seconds with our instant quote tool, then a comfort advisor confirms the exact price on a free in-home estimate. Typical Seattle-area prices are in our mini-split cost guide.
After installation, a ductless (mini-split) tune-up is $230, or $180 for Home Comfort Club members, for 1 or 2 indoor heads, plus $60 for each additional head (prices as of November 2026). Financing through Salal Credit Union or Synchrony starts at $179/month* (financing).
*Financing through Salal Credit Union or Synchrony, subject to credit approval. Rates, terms and monthly payments depend on the amount financed, the plan and your credit. 0% interest options are available to qualifying customers. See lender for full terms.
Get a free estimateFree in-home estimates on new systems, with a written, upfront price.
Ductless rebates
Most utility rebates for ductless systems apply when the heat pump replaces electric heat. Tacoma Power, for example, gives $1,000 for a ductless heat pump with up to 4 units, or $650 with 5 or more, when it replaces electric baseboards or an electric furnace (mytpu.org, read 5 November 2026). PSE, Seattle City Light, Snohomish PUD and Energy Smart Eastside have their own programs; see rebates by utility. The federal 25C tax credit ended for equipment installed after 31 December 2025.
How we install a ductless system
- Free estimate. We look at the rooms you want to heat and cool, where the indoor units can go and where the outdoor unit can sit.
- Load calculation. A room-by-room ACCA Manual J calculation sizes each indoor unit.
- Written options. You get upfront prices and the rebates each option qualifies for.
- Permits. We pull the required permits.
- Installation and start-up. We mount the units, run the line set, wiring and condensate drain, and test heating and cooling in every zone.
New installations come with a 3-year Comfort Shield labor warranty, kept active with yearly maintenance, and first-year maintenance is included. Local pages: ductless in Tacoma, ductless in Bremerton. Repairs: mini-split repair.
Just one cold room? See how a ductless heat pump can warm a cold bedroom.
Single-stage, two-stage or multi-stage?
Heating systems come in different types, and each type has different levels of efficiency, comfort, and noise.
Single-Stage
A single-stage unit means its operating speed is either on or off.
Two-Stage
A Two-stage unit means it operates on either high or low. The low setting covers most everyday heating needs and keeps temperatures even. On hotter days, it can use the high level of operation to maintain comfort levels. Two-stage systems are typically quieter and more efficient than a single-stage unit.
Multi-Stage
A Multi-stage unit has a range of operation and is therefore the most precise temperature control option, as well as the option that provides the best comfort. These variable speed units are the quietest and offer the most energy savings.
Why Choose Home Comfort Alliance?
Your Comfort is Our Promise
We promise...
Reliable heating, air conditioning, plumbing and electrical service - all from one trusted company.
To educate and guide you through your options so you’ll find the right solution at the right price.
Knowledgeable and respectful workers who ensure both your own comfort during the installation process, and lasting comfort from your home systems.
Outstanding service, communication, and follow-up, so your home is comfortable now and for years to come.
It's a promise we've kept with thousands of homeowners across Western Washington
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Ductless mini-split FAQ
How much does a ductless mini-split cost?
It depends on how many rooms (zones) you want to heat and cool, the indoor unit style, the line-set length and any electrical work. Our instant quote tool gives a price range in about 30 seconds, and a comfort advisor confirms the exact price on a free in-home estimate. Our mini-split cost guide covers typical Seattle-area prices.
How many rooms can one ductless system serve?
A single-zone system serves one room. A multi-zone system connects several indoor units to one outdoor unit, up to 8 separate zones, each with its own temperature setting.
Are there rebates for ductless heat pumps?
Yes, mainly when the system replaces electric heat. For example, Tacoma Power gives $1,000 for a ductless heat pump with up to 4 units, or $650 with 5 or more, when it replaces electric baseboards or an electric furnace (mytpu.org, read 5 November 2026). PSE, Seattle City Light, Snohomish PUD and Energy Smart Eastside run their own programs.
Do ductless mini-splits heat in cold weather?
Yes. Ductless heat pumps heat as well as cool, and cold-climate models keep more of their heating output on the coldest nights.
How much is ductless maintenance?
A ductless (mini-split) tune-up is $230, or $180 for Home Comfort Club members, for 1 or 2 indoor heads, plus $60 for each additional head.
What brands do you install?
We are a Mitsubishi Electric Diamond Dealer and a Quilt dealer, and we service all major brands.
What warranty comes with a new ductless system?
New installations come with a 3-year Comfort Shield labor warranty, kept active with yearly maintenance, and first-year maintenance is included.
Get a ductless estimate
Tell us which rooms you want to heat and cool. A comfort advisor will set up a free in-home estimate with written options and rebates.
Get an estimate
Two quick steps. A comfort advisor will call you to set up your visit.