❄️ Official Rankings
10 Best HVAC in Germantown, MD (September 2026)
We compared 10 hvac serving Germantown and Montgomery County, Maryland, and ranked the top providers by verified reviews, ratings, and local reputation — 14,111 customer reviews in all.
The 10 listed below hold an average rating of 4.9 out of 5, led by Simply Home Service. Updated for September 2026.
- HVAC ranked
- 10
- Average rating
- 4.9★
- Reviews analyzed
- 14,111
- Area codes
- 301, 240
⭐ 5.0 · 204 reviews
11115 Sceptre Ridge Terrace, Germantown, MD 20876
⭐ 5.0 · 162 reviews
396 N Summit Ave, Gaithersburg, MD 20877
⭐ 4.9 · 7549 reviews
227 E Deer Park Dr, Gaithersburg, MD 20877
⭐ 4.9 · 1831 reviews
8000 Cessna Ave, Gaithersburg, MD 20879
⭐ 4.9 · 116 reviews
13013 Thyme Ct, Germantown, MD 20874
⭐ 4.8 · 2467 reviews
7940 Cessna Ave, Gaithersburg, MD 20879
⭐ 4.8 · 683 reviews
18918 Premiere Ct, Gaithersburg, MD 20879
⭐ 4.8 · 652 reviews
211 Perry Pkwy #9, Gaithersburg, MD 20877
HVAC listed here serve Germantown, Montgomery County, and nearby ZIP codes including 20874, 20875, 20876.