Cooling services
Ductless Mini-Split Installation in Renton, WA
Ductless mini-splits heat and cool room by room without ductwork, which makes them ideal for older homes and additions. Sizing and install quality are what make them efficient.
- Licensed & insured
- Fair rates
- Serving all of Washington
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Before & after
Heating & Cooling, before and after
A representative example of the kind of heating & cooling work we do. Illustrative only, not a photo of a specific customer's job.
Get a free quoteJoshua replaced my AC mini-split and did an excellent job. He was professional, knowledgeable, and took the time to explain everything clearly. The installation was done quickly and with great attention to detail, and the system has been running perfectly ever since. I really appreciate the honest service and would highly recommend Joshua and his team to anyone needing HVAC work.
Overview
Ductless Mini-Split Installation done right
Westside Comfort Solutions is a Mitsubishi Diamond dealer serving Renton, WA that sizes and installs ductless mini-split heat pumps for homes without ductwork.
Ductless mini-splits heat and cool room by room without ductwork, which makes them ideal for older homes and additions. Sizing and install quality are what make them efficient.
- Single and multi-zone mini-split systems
- Mitsubishi Diamond dealer installation
- Right-sizing for each zone
- Clean line-set and condensate routing
- Heating and cooling in one system
Why it matters
Why ductless mini-split installation is worth doing right
Ductless mini-splits solve a problem central systems can't: comfort in homes and rooms that have no ductwork. An outdoor unit feeds one or more wall, ceiling, or floor heads, each with its own thermostat, so a converted attic, an addition, or a too-hot bonus room finally stays comfortable without tearing open walls for ducts.
Because a mini-split is a heat pump, the same system heats and cools, and it does both efficiently. Sizing and install quality are everything: an oversized head short cycles and a sloppy line set leaks performance. As a Mitsubishi Diamond dealer we size each zone to the room and commission the system properly.
Is it the right fit?
Signs a ductless mini-split is right for you
A mini-split tends to be the best fit when:
- A room runs hot or cold no matter what the central system does
- You're finishing an attic, garage, basement, or addition
- Your home has no ductwork, or ducts that aren't worth extending
- You want independent temperature control room by room
- You're replacing noisy, inefficient window units or baseboard heat
- You want efficient heating and cooling from one system
How it works
What to expect with ductless mini-split installation
- 01
Map the zones
We assess each space you want conditioned and the load of each, then plan how many heads and what capacity the home needs.
- 02
Size and recommend
We size each zone to its room and lay out single-zone or multi-zone honestly, no oversizing for the sake of it.
- 03
Install and route
We mount the heads, set the outdoor unit, and run the line set and condensate cleanly, with as little wall disruption as possible.
- 04
Commission and test
We charge and start the system, verify each zone heats and cools, and walk you through the controls.
Your options
Single-zone, multi-zone, or central?
The right configuration depends on how many spaces you're conditioning:
Fair, upfront pricing
What affects the cost
We quote after we see the home and map the zones. What affects cost:
- Number of zones and indoor heads
- Head style (wall, ceiling cassette, or floor)
- Line-set length and routing to each head
- Electrical work and the outdoor unit location
- System capacity and efficiency
Every job is different, so you get a clear quote before any work starts, with no surprises. Financing is available, so the right fix doesn't have to wait. We're licensed (WESTSCS752MT) and insured, and we back our work with a 1-year workmanship guarantee.
Warranty coverage
The warranty behind your new system
These are three separate kinds of coverage, and they protect different things. The manufacturer warranty covers the equipment, our workmanship guarantee covers the quality of the installation, and the optional JB Warranties plan covers labor.
We treat every ductless mini-split installation job like it's in our own home: diagnose it right, quote it fair, and stand behind the work.
Related services
More cooling services
See all cooling services.
Questions
Common questions about ductless mini-split installation
Are mini-splits good for older Washington homes?
Often, yes. Many older homes lack the ductwork central systems need, and a ductless mini-split heats and cools efficiently without it, zone by zone.
Does a ductless mini-split heat as well as cool?
Yes. A mini-split is a heat pump, so the same system both heats and cools, which is why they work well year-round in our climate.
How many rooms can one mini-split handle?
A single outdoor unit can feed several indoor heads, each with its own control. We size the system to the number of zones and the load of each room so every space stays comfortable.
Are mini-splits more efficient than a furnace and AC?
Often, yes. A ductless heat pump avoids the energy lost through ducts and lets you condition only the rooms you're using, which is why they're a strong efficiency upgrade in our climate.
Are ductless mini-splits noisy?
No. The compressor is outside and the indoor heads are very quiet, usually quieter than a window unit or a forced-air system kicking on.
Local experts, reliable service
Proudly serving Renton, WA and nearby communities
Based in Renton, we serve homes and businesses across Washington with honest diagnostics and quality work that lasts.
- Licensed, bonded & insured
- Upfront, fair pricing with no surprises
- 24/7 emergency service
- Clean, respectful crews
- Local and owner-operated
Service areas
- Greater Seattle / Eastside
- South Sound
- North Sound
- Statewide
Need ductless mini-split installation? Let's talk.
Tell us what's going on. We'll diagnose it right and only recommend what you actually need.