❄️ Official Rankings
10 Best HVAC in Potomac, MD (September 2026)
We compared 10 hvac serving Potomac and Montgomery County, Maryland, and ranked the top providers by verified reviews, ratings, and local reputation — 2,226 customer reviews in all.
The 10 listed below hold an average rating of 4.9 out of 5, led by Mega Services Inc.. Updated for September 2026.
- HVAC ranked
- 10
- Average rating
- 4.9★
- Reviews analyzed
- 2,226
- Area codes
- 301, 240
⭐ 4.9 · 596 reviews
12324 Wilkins Ave, Rockville, MD 20852
⭐ 4.9 · 456 reviews
2267 Lewis Ave, Rockville, MD 20851
⭐ 5.0 · 69 reviews
8328 Georgetown Pike, McLean, VA 22102
⭐ 4.8 · 359 reviews
1010 Rockville Pike Ste 302, Rockville, MD 20850
⭐ 5.0 · 41 reviews
10809 Great Arbor Dr, Potomac, MD 20854
⭐ 4.8 · 218 reviews
411 Green Pasture Dr, Rockville, MD 20852
⭐ 4.8 · 122 reviews
12288 Wilkins Ave Suite E, Rockville, MD 20852
HVAC listed here serve Potomac, Montgomery County, and nearby ZIP codes including 20854, 20859.