❄️ Official Rankings
10 Best HVAC in Potomac, MD (August 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 August 2026.
- HVAC ranked
- 10
- Average rating
- 4.9★
- Reviews analyzed
- 2,226
- Area codes
- 301, 240
B&B Air Conditioning & Heating Service
⭐ 4.9 · 596 reviews
12324 Wilkins Ave, Rockville, MD 20852
Glenmont Heating & Air Conditioning
⭐ 4.9 · 456 reviews
2267 Lewis Ave, Rockville, MD 20851
Caribbean Cooling & Heating
⭐ 5.0 · 69 reviews
8328 Georgetown Pike, McLean, VA 22102
One Hour Air Conditioning & Heating®
⭐ 4.8 · 359 reviews
1010 Rockville Pike Ste 302, Rockville, MD 20850
EzGreen Air Duct And Dryer Vent Cleaning
⭐ 5.0 · 41 reviews
10809 Great Arbor Dr, Potomac, MD 20854
Heating and Air by Jimmy Gusky
⭐ 4.8 · 218 reviews
411 Green Pasture Dr, Rockville, MD 20852
Home Air Services
⭐ 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.