Menu

Ductless Solutions

Mini-Split Installation

Get targeted heating and cooling for rooms that are hard to keep comfortable. Harts installs ductless mini-split systems for bedrooms, additions, garages, offices, bonus rooms, and other spaces where traditional ductwork may not be the best fit.

Licensed & Insured Upfront Pricing Locally Owned Quality Work
Google Reviews

4.8 / 5 From 8.2k Reviews

Harts technician greeting a homeowner with a branded service van in the driveway
HomeAdvisor Top Rated
Angi super service award 2024 badge
Seattle Times - Best In The PNW
Expertise.com Award
2025 Best of the Sound Sound Award
Best Pick Reports
BBB Accredited Business

Mini-Split Installation Options

Ductless mini-splits can be a smart option when you want heating and cooling in a specific space without adding or extending ductwork. Harts helps you compare system options, choose the right setup, and install equipment designed for your home.

Single-Zone
Mini-Splits

Install a ductless system for one bedroom, office, garage, bonus room, or other specific area.

Multi-Zone
Mini-Splits

Create heating and cooling for multiple rooms with indoor units connected to one outdoor system.

Mini-Split Replacement

Replace an aging, unreliable, or outdated ductless system with a new mini-split setup.

Ductless System Planning

Choose the right system size, indoor unit placement, and zone layout for your home.

Heating And Cooling Without Ductwork

Mini-splits are designed to heat and cool specific areas of the home without relying on traditional ductwork. That makes them a strong option for spaces that never seem to stay the right temperature, including converted garages, home offices, finished basements, bonus rooms, additions, and rooms far from the main HVAC system.

Harts helps homeowners choose ductless equipment that fits the space, layout, and comfort needs of the home. Our technicians review the installation area, discuss indoor and outdoor unit placement, and explain the options before work begins.

A woman comfortable with her home air conditioning unit.
Ductless mini split in a Seattle townhouse.

Where to Install a Ductless Mini-Split?

A ductless mini-split may be a good fit when extending ductwork is expensive, difficult, or unnecessary. These systems can also help with rooms that stay too warm in the summer, too cold in the winter, or uncomfortable compared to the rest of the home.

Mini-splits are often used in bedrooms, additions, workshops, garages, detached living spaces, and areas with limited airflow from the main system. Harts can help you decide whether a single-zone or multi-zone setup makes sense based on how you use the space.

When To Install A Mini-Split

A ductless mini-split can help solve heating and cooling problems in specific areas of your home. If one room or zone never feels right, a mini-split may give you more control without a major ductwork project.

One Room Is Always Too Hot Or Too Cold

You Want Better Room-By-Room Control

You Are Finishing A Garage Or Addition

Extending Ductwork Is Not Practical

Your Home Does Not Have Ductwork

Your Old Mini Split Needs Replacement

Harts technician greeting a homeowner before a service appointment

Why Choose Harts To Install Your Mini-Split?

Installing a ductless mini-split takes more than mounting equipment on the wall. The system needs to be properly sized, placed, connected, and tested so it can heat and cool the space as intended.

Harts sends licensed and trained HVAC technicians who understand ductless system installation, indoor unit placement, outdoor unit setup, line set routing, electrical requirements, and system performance. Homeowners throughout the Puget Sound region trust Harts for clear communication, professional service, and highly rated customer care.

*5% off eligible services, up to $200. Proof of eligibility required. Terms and exclusions may apply.

Ready To Add Ductless System?

Get clear options, upfront pricing, and professional mini-split installation from Harts.

What To Expect From Harts

Harts makes the mini-split installation process clear from the first appointment to the final system test.

01

Schedule Service

Call or book online and tell us about the room, area, or zone you want to add a ductless HVAC system to.

02

Evaluate The Space

A Harts technician reviews the room layout, installation area, system needs, and placement options.

03

Review Options

We explain compatible mini-split options, system sizing, installation requirements, and upfront pricing.

04

Install System

Your technician installs the approved ductless system with care for your home and equipment.

05

Test and Review

We test system operation, review the completed installation, and answer your remaining questions.

Ductless System Planning

Room-By-Room Heating And Cooling Solutions

Mini-splits are useful when a room needs dedicated heating and cooling without a full ductwork project. The right setup depends on the size of the space, insulation, sun exposure, layout, electrical access, indoor unit placement, and how often the room is used.

System Sizing And Layout

A successful mini-split installation starts with choosing the right equipment and layout for the space.

Single-Zone Systems

A single-zone mini-split is designed for one area of the home. This can work well for a bedroom, office, garage, addition, bonus room, or another space that needs dedicated temperature control.

Multi-Zone Systems

A multi-zone mini-split can serve multiple rooms with separate indoor units connected to one outdoor system. This may be helpful when several areas need heating and cooling without adding ductwork.

System Sizing And Placement

Mini-splits need to be sized and placed correctly to perform well. Harts reviews the room size, layout, airflow needs, wall space, outdoor unit location, and installation requirements before recommending options.

Mini-Split Installation Considerations

Mini-split installation may involve indoor equipment, outdoor equipment, refrigerant lines, condensate drainage, controls, and electrical connections.

Indoor And Outdoor Unit Setup

The indoor unit needs to be placed where it can move air effectively through the space. The outdoor unit also needs proper clearance, access, and placement for service and system performance.

Line Sets, Drainage, And Controls

Mini-split systems require refrigerant line sets, condensate drainage, electrical connections, and system controls. These details affect how the system operates and how clean the finished installation looks.

Replacing An Older Mini Split

Mini-split replacement may make sense when an existing ductless system is unreliable, outdated, noisy, inefficient, or no longer heating and cooling properly. Harts can review the current setup and explain replacement options.

Local Reviews

See what local homeowners have shared about their experience with Harts technicians and our AC maintenance service.

“Chris and Rashard were efficient, professional, and kind while installing my new mini-split. I would recommend Harts.”

Kelly C.

Tacoma, WA

Mini-Split Installation

“Joe and Kyle did a great job looking over my ductless mini-split. They cleaned it up and gave me information about necessary ongoing and periodic maintenance tasks.”

Ross S.

SeaTac, WA

Ductless Maintenance

“Thom came out to look at our ductless HVAC system, which had not been heating or cooling properly. He performed a thorough inspection, answered our questions, and helped us feel confident about the repair vs. replace decision.”

Kristyn J.

Tacoma, WA

Ductless HVAC System Service

“We had a great experience with our HVAC installation and are very happy with the results. The work was clean, professional, and detailed, and the technicians explained the system so we understood how everything worked.”

Drew L.

Lakewood, WA

HVAC Installation

“Harts installed a new Midea heat pump system using our existing ductwork to replace an old gas furnace and malfunctioning AC system. They presented options that matched our needs, did not pressure us, and the installation crew was friendly and efficient.”

Ryan F.

Renton, WA

Heat Pump Installation

“Robert was helpful when we decided to install a heat pump, and the team worked hard to get the heat pump and thermostat functioning perfectly.”

Robin S.

Puyallup, WA

Heat Pump Installation

“Harts provided excellent quality and value for our HVAC project. The explanations were easy to understand, the team was polite and friendly, and they cleaned up well afterward.”

Chris S.

Tacoma, WA

HVAC Project

“Johnny was helpful and easy to talk to. He explained the procedures and estimates in detail and gave us multiple options for HVAC replacement.”

Michael T.

Tacoma, WA

HVAC Replacement Options

“The technician answered all my concerns and performed the electrical repairs needed to install a heat pump.”

Mark K.

Tacoma, WA

Heat Pump Installation

Harts service area map covering communities across Pierce, King, Thurston, Snohomish, and Kitsap counties.

Mini-Split Installation Service Areas

Harts provides residential mini-split installation throughout the Puget Sound region, serving homeowners across Thurston, Pierce, King, Snohomish, and Kitsap counties. If you need ductless heating and cooling for a bedroom, garage, office, addition, or hard-to-comfort space, our local HVAC technicians can help.

Primary service hubs:

The Harts markers show our primary service hubs, while the shaded map represents the broader communities we serve. From Olympia and Tacoma to Renton, Seattle, Lynnwood, and the Kitsap Peninsula, mini-split installation help is nearby.

Save On Mini-Split Installation

Offers & Discounts

Check out the current promos and coupons from Harts Plumbers, Electricians, & HVAC Technicians.

Mini-Split Installation FAQs

Find answers to common questions about ductless mini-split installation, replacement, system sizing, room-by-room control, and what to expect from Harts.

A ductless mini-split is an HVAC system that serves specific rooms or zones without traditional ductwork. It usually includes an outdoor unit connected to one or more indoor units. Depending on the system type, a mini-split may provide cooling only or both heating and cooling.

Mini-splits are often installed in bedrooms, offices, garages, additions, bonus rooms, workshops, detached spaces, and homes without existing ductwork. The best location depends on the room layout, wall space, airflow needs, and outdoor unit placement.

Some ductless mini-splits provide both heating and cooling, while others may be designed for cooling only. It depends on whether the system is connected to heat pump equipment or an air conditioning setup. Harts can help you compare options based on how you want to use the space.

No. Mini-splits are ductless systems, which means they can serve specific rooms or zones without adding traditional ductwork. Depending on the equipment, they may provide cooling only or both heating and cooling, making them a good option for additions, garages, older homes, and rooms that are difficult to serve with central HVAC.

A single-zone mini-split serves one room or area. A multi-zone system can serve multiple rooms with separate indoor units. The right option depends on how many spaces need heating and cooling, the layout of your home, and your comfort goals.

Yes. Harts can replace aging or unreliable mini-split systems. Our technicians can review the current setup, explain compatible replacement options, and install the approved ductless equipment.

Many mini-split installations can be completed in a day, but timing depends on the number of indoor units, installation complexity, electrical needs, line set routing, accessibility, and whether old equipment needs to be removed.

Mini-split installation cost depends on the system type, number of zones, equipment size, installation requirements, electrical work, accessibility, and whether an existing system is being replaced. Harts provides upfront pricing before approved installation work begins.

Contact Us Now

This field is for validation purposes and should be left unchanged.
By submitting this form and signing up for texts, you agree to receive informational messages (e.g., appointment reminders, account notifications, offers, etc.) from Harts at the number provided. Msg & data rates may apply. Msg frequency may vary. Unsubscribe at any time by replying STOP and no further messages will be sent. Reply HELP for help or email us at marketing@hartsservices.com. Please review our Privacy Policy and Terms & Conditions.

Ongoing Maintenance

Join The Harts Home Care Plan

Harts Home Care Plan Member

Stay ahead of unexpected home service problems with the Harts Home Care Plan. Members receive priority service, no trip fees, dedicated support, and 10% off eligible service work, making it easier to care for the systems that keep your home safe and comfortable.

Membership includes ongoing preventive service, with biannual HVAC tune-ups, an annual plumbing and sewer safety check, and an annual electrical safety inspection. These visits can help identify wear, safety concerns, and developing problems before they lead to larger repairs or unexpected disruptions.

The plan supports your home’s plumbing, sewer and drain, electrical, heating, and cooling systems, giving you one convenient way to maintain essential equipment, receive member benefits, and get help when you need it.

HVAC Services Across The Puget Sound

Our HVAC technicians provide heating and cooling services to homeowners throughout the Puget Sound region.
Whether your home needs AC, furnace, heat pump, or ductless service, Harts can help you find an HVAC technician near you.

Need Help With Another Service?

Call Harts now or book online, and our team will help get you to the right service.

Need Water Heater Service?

Call Harts now or book online for water heater repair, replacement, or installation.

Need Cooling Service?

Call Harts now or book online for AC repair, replacement, or cooling system service.

Need Heating Service?

Call Harts now or book online for furnace, heat pump, or heating system help.

Need Sewer Service?

Call Harts now or book online for sewer inspections, repairs, or replacement options.

Need Drain Cleaning?

Call Harts now or book online for drain cleaning, clog removal, or drain service.

Need Electrical Service?

Call Harts now or book online to schedule help from a Harts electrician.

Need Plumbing Service?

Call Harts now or book online to schedule fast, reliable plumbing service.