6 AC Installation Contractors in Mill Creek, WA
Top-Rated AC Installation Contractors in Mill Creek
Cascadia Comfort
“Five reviewers specifically use the word excellent or outstanding when describing the quality of work and the professionalism of technicians. Communication…”
Washington Natural Gas, Heating & Air Conditioning - FAST - SAME DAY Heating Repair & Installation
“Five-star reviews consistently mention technicians Mike Fahmie, John Palmer, and team leaders by name, with customers praising communication and completion…”
All AC Installation Contractors (6 total)
Mill Creek Heating & Air Conditioning
“Four of ten reviews specifically reference the Mill Creek operation by name, with two reporting negative…”
The Best HVAC Inc
“All four reviews award 5 stars, with Kevin earning specific praise for a same-day furnace replacement and…”
AC Installation Costs in Mill Creek
New central AC installation costs in Mill Creek, by system type and brand.
| Service | Low | Average | High |
|---|---|---|---|
Window unit | $168 | $392 | $784 |
Ductless mini-split (single zone) | $2,240 | $5,040 | $8,960 |
Central AC replacement (existing ducts) | $3,920 | $7,280 | $13,440 |
Central AC new install (with ductwork) | $7,840 | $13,440 | $22,400 |
Carrier (residential) | $4,256 | $6,944 | $11,760 |
Trane (residential) | $5,600 | $9,856 | $15,232 |
Lennox (residential) | $3,920 | $7,280 | $13,440 |
Rheem (residential) | $3,584 | $6,160 | $10,080 |
Prices reflect continental metro averages compiled from published industry cost guides, contractor surveys, and regional labor data. Last updated: April 2026.
AC Installation in Mill Creek, WA: What to Expect
Mill Creek sits in the Seattle metro area, where winters stay wet and mild with overnight lows around 37 degrees Fahrenheit, while summer temperatures once rarely climbed past 76. That pattern is shifting. Recent heat waves have pushed homeowners beyond their historical reliance on heating alone, and the market for AC Installation in Mill Creek has grown accordingly. Six contractors now serve this area, collectively holding an average rating of 3.7 stars across roughly 250 reviews, reflecting a competitive but uneven landscape.
Pricing for cooling systems spans a clear range. A window unit runs $168 to $784, while a ductless mini-split for a single zone costs $2,240 to $8,960, and central AC replacement using existing ductwork runs $3,920 to $13,440. Washington State does not require a statewide HVAC license, so local licensing requirements vary by municipality, which means homeowners should verify credentials directly with their chosen contractor before work begins.
Among the highest-rated names in the area, Cascadia Comfort draws praise for work described as excellent or outstanding, with communication surfacing repeatedly in positive reviews. Washington Natural Gas, Heating & Air Conditioning earns mention for technicians Mike Fahmie and John Palmer, whose customers highlight both clear communication and fast completion. Heating and Cooling receives credit for same-day emergency response and skilled installations, though one review cites a missed appointment. These patterns suggest that response time and proactive communication matter most to local customers.