Garage & Workshop Mini Split Solutions
Transform your garage, workshop, ADU, or detached space into a comfortable, year-round usable area. A dedicated mini split is the cleanest, most efficient way to heat and cool any unconditioned space.
Get a Free QuoteMake Your Space Usable Year-Round
Don't let Seattle's cold, damp winters or warm summers keep you out of your favorite space. Whether it's a home gym, woodworking shop, creative studio, or ADU, a ductless mini split provides independent, on-demand comfort without tapping into your main home's HVAC system.
Unlike portable heaters or window units, a permanently installed mini split is efficient, quiet, and keeps humidity in check — protecting both you and your equipment from Seattle's moisture-heavy climate.
- Perfect for home gyms, workshops, hobby rooms & ADUs
- Independent temperature control from the main house
- Protects sensitive equipment and tools from humidity
- Quick, non-invasive installation — no ductwork needed
- Both heating and cooling in a single compact unit
- Energy-efficient inverter technology
Popular Applications
We install garage and workshop mini splits for all kinds of Seattle-area spaces.
Garages & Car Workshops
Stay comfortable while working on your vehicle year-round. Prevents damage from freezing temperatures and keeps humidity from rusting tools.
Woodworking Studios
Precise humidity control protects your lumber and finished pieces. Filters handle sawdust while keeping your main home dust-free.
Home Gyms
Train in comfort without overheating in summer or shivering in winter. Independently controlled for any workout session.
ADUs & Guest Suites
The industry-standard solution for accessory dwelling units — self-contained, efficient, and completely independent from the main home.
Creative Studios & Offices
Turn a detached space into a productive year-round office or art studio with reliable climate control.
She-Sheds & Man Caves
Make your personal retreat truly comfortable — a mini split is the perfect finishing touch for any dedicated hobby space.
What's Included: Our Installation Process
Simple, clean, and fast — most garage installations are completed in a single day.
Free In-Home Assessment
We visit your garage or workshop, measure the space, and assess insulation and electrical needs.
Load Calculation & Sizing
We size the unit precisely based on your square footage, ceiling height, and insulation levels.
Detailed Quote
You receive a clear quote covering the unit, all electrical work, permits, and labor — no hidden fees.
Installation Day
Our certified technicians complete most garage installs in a single day with minimal disruption.
Walkthrough & Warranty
We walk you through operation and controls, and register your full manufacturer warranty.
Brands We Install
Mitsubishi Electric
Mitsubishi's low-ambient heating technology makes their units ideal for uninsulated garages — they heat effectively even in very cold Seattle winters.
Daikin
Daikin's compact single-zone units are a popular choice for garages and workshops — reliable, efficient, and available in sizes perfectly matched to detached spaces.
LG
LG offers excellent value for straightforward garage applications, combining solid cold-climate performance with easy-to-use smart controls.
Pricing Guide for Garage & Workshop Installs
Small Garage / Studio (up to 400 sq ft)
Starting around $2,800–$4,500
Single-zone unit with all electrical work and permits included.
Standard 2-Car Garage (400–700 sq ft)
Starting around $3,500–$5,500
Properly sized for a typical 2-car garage including ceiling height adjustment.
Large Shop / ADU (700+ sq ft)
Custom quote required
May require larger capacity unit or multi-zone setup. Free estimate to determine exact needs.
Garage and workshop installs may qualify for heat pump rebates if the space is used as living or working quarters. Ask us during your free estimate.
Frequently Asked Questions
Ready to Beat the Seattle Weather?
Don't let the forecast dictate your comfort. Let Mark's Mini Splits bring year-round efficiency to your home with expert ductless installation.
Get Your Free Quote