Rooms with no ductwork, like additions, converted attics, garages, or ADUs
Air Conditioning · Redmond, WA
Mini Split Installation in Redmond, WA
Most mini split installations in Redmond run $3,800–$9,500 installed, depending on how many zones you need and how far the line set has to run. SPS Pro Services installs single- and multi-zone systems throughout Redmond and King County, with most jobs scheduled within a week and completed in one to two days.
Typical cost$3,800–$9,500
WarrantyWorkmanship warranty
AvailabilitySame-week visits
HoursMon–Fri 8am–6pm
Redmond calls give us a pattern we don't see as often in denser Seattle neighborhoods: outdoor units mounted too close to fences or under eaves without enough clearance, and indoor heads sized for the wrong room. We see it a lot in the tech-office-turned-bonus-room setups common here, where a homeowner adds a mini split to cool a home office and the contractor undersizes it for the heat load of two monitors and a server closet running all day.
Local knowledge
What's different about mini split installation in Redmond
Every area we serve is different — in Redmond, these three factors matter most.
Redmond neighborhoods like Idylwood and Grasslawn have a lot of 1970s-80s ranch and split-level homes with 60-100 amp electrical panels, which often need a subpanel or panel upgrade before a multi-zone mini split can be added.
Newer developments like Redmond Ridge and Trilogy have HOA rules on where outdoor condenser units can be visible from the street, so we plan placement before ordering equipment, not after.
PSE serves electric here, and Redmond's wet winters mean condensate lines need a real slope and insulated wall sleeves, not just a hole drilled through siding, or you get drips and mold behind the unit within a year or two.
Symptoms we see daily
Signs you need mini split installation in Redmond
Relying on electric baseboard heat or portable window AC units
Uneven temperatures between floors or rooms fed by the same central system
Rising electric bills tied to old resistance heaters
No central air and summer afternoons are becoming hard to live with
No surprises
How a Redmond mini split installation visit works
1
Load and site assessment
We measure each room, check window exposure and existing insulation, and look at your electrical panel capacity before recommending a system size.
2
Equipment and zone planning
We map out how many indoor heads you need and where the outdoor unit can go, factoring in HOA sightline rules if you're in a covenant community.
3
Electrical and line set prep
We run dedicated circuits, upgrade the panel if needed, and install the line set with proper insulation and a sloped condensate drain.
4
Installation and vacuum test
We mount the indoor and outdoor units, connect refrigerant lines, pull a vacuum to remove moisture and air, then verify refrigerant charge against manufacturer specs.
5
System walkthrough
We test heating and cooling modes in every zone, show you the remote or app controls, and confirm the drain is clearing properly before we leave.
Flat-rate pricing
Mini Split Installation in Redmond — what it costs
Conservative ranges for the Seattle metro. Your written quote is exact before work begins.
| Job | Typical price |
|---|---|
| In-home estimateExact flat quote for your home | Free |
| Standard mini split installationTypical single-system job | $3,800–$5,700 |
| Mid-range mini split installationHigher-capacity or multi-zone equipment | $5,700–$7,600 |
| Complex mini split installationPremium equipment or difficult access | $7,600–$9,500 |
Prices reviewed by Sergei Petrov · July 2026. Parts availability can shift ranges — the quote you sign is final.
24/7 Emergency Line
Emergency dispatchNo cooling at 11pm? We pick up.
Office hours are Mon–Fri, but the emergency line never closes. Call any hour and we dispatch a licensed tech across Greater Seattle.
Straight answers
Mini Split Installation in Redmond — FAQ
Do I need a permit for a mini split installation in Redmond?
Yes, the City of Redmond requires an electrical permit for the new circuit and often a mechanical permit for the outdoor condenser, especially for multi-zone systems. We pull permits as part of the job so you're not left dealing with inspections on your own.
Why do mini splits in older Redmond homes sometimes trip breakers?
A lot of homes in areas like Idylwood or near downtown were built with 60-100 amp panels that are already near capacity with modern appliances. Adding a mini split without checking available capacity is one of the most common issues we get called out to fix after another contractor's install.
Can I install the outdoor unit if my HOA restricts what's visible from the street?
In communities like Redmond Ridge and Trilogy, HOAs often require condenser units to be screened or placed in specific spots. We check your HOA guidelines before finalizing placement so you don't end up needing to relocate the unit later.
How long does a typical mini split installation take in Redmond?
A single-zone system usually takes one day. Multi-zone systems with three or four indoor heads, especially if we're adding electrical capacity, typically take one to two full days depending on line set length and attic or crawlspace access.
Founder & Lead HVAC Technician, SPS Pro Services
EPA Section 608 UniversalNATE Core Certified14+ years in the trade
Reviews the pricing and service guidance on this page against SPS Pro Services's actual job records in Redmond and across the Seattle metro.
Prices reviewed July 2026
Also in Redmond
Other services our crew handles on the same routes.
Need mini split installation in Redmond?
Call (206) 427-8907 to schedule a mini split assessment for your Redmond home, Monday through Friday, 8am to 6pm.