❄️ Official Rankings
10 Best HVAC in Oak Harbor, WA (August 2026)
We compared 10 hvac serving Oak Harbor and Island County, Washington, and ranked the top providers by verified reviews, ratings, and local reputation — 2,305 customer reviews in all.
The 10 listed below hold an average rating of 4.7 out of 5, led by High Caliber Plumbing. Updated for August 2026.
- HVAC ranked
- 10
- Average rating
- 4.7★
- Reviews analyzed
- 2,305
- Area code
- 360
High Caliber Plumbing
⭐ 5.0 · 164 reviews
285 NE Midway Blvd Ste 7, Oak Harbor, WA 98277
CPI Plumbing, Heating & Cooling
⭐ 4.9 · 930 reviews
520 E Whidbey Ave Ste 107B, Oak Harbor, WA 98277
Island Electric
⭐ 4.9 · 241 reviews
1105 NE 3rd Ave, Oak Harbor, WA 98277
Legacy Plumbing Group LLC
⭐ 4.9 · 74 reviews
31775 State Rte 20 A2, Oak Harbor, WA 98277
Hearth and Home
⭐ 4.7 · 122 reviews
949 W Ault Field Rd, Oak Harbor, WA 98277
Island Heating & A/C Inc.
⭐ 4.6 · 312 reviews
630 Industrial Ave, Oak Harbor, WA 98277
Oak Harbor Ace Hardware
⭐ 4.5 · 378 reviews
150 SE Pioneer Way, Oak Harbor, WA 98277
Marshall's Heating & AC
⭐ 4.2 · 5 reviews
1151 NE 21st Ct, Oak Harbor, WA 98277
HVAC listed here serve Oak Harbor, Island County, and nearby ZIP codes including 98277, 98278.