HVAC company · Gaithersburg, MD
GAC Services
4.9 from 7,927 Google reviews#1 of 22 HVAC companies near Rockville Last updated Sep 25, 2026
90SCORE
About GAC Services
Reliable heating, cooling, plumbing & electrical services in Gaithersburg, MD. Expert repairs, installations & maintenance. Call today!
From the company's website
At a glance
- Trades
- HVAC, Plumbing, Electrical
- In business
- 56 years (since 1970)
- License
- d (as listed by the company, not yet verified)
- Service area
- Gaithersburg, Montgomery, Howard & Frederick, Electric
- Address
- 227 E Deer Park Dr, Gaithersburg, MD 20877
- Highlights
- Emergency serviceFinancing available
Services
- AC repair / service
- Heating repair
- Furnace service
- Heat pump service
- Ductless mini-split
- Thermostats
- HVAC maintenance
- HVAC installation
How the 90 score breaks down
Rating quality40.5 / 45
Review volume25.0 / 25
Review recency15.0 / 15
Years in business10.0 / 10
Verified license0.0 / 5
Scores are calculated the same way for every company. See the method.
What customers say
5★7,514
4★182
3★34
2★33
1★164
Gio was extremely helpful and answered all my questions
Google review, Sep 25, 2026
Charles was very knowledgeable. Shared insights and walked me through the process.
Google review, Sep 25, 2026
Fall furnace check, easy to get appointment, relaible service.
Google review, Sep 25, 2026
Rating distribution and reviews from the company's public Google listing.
Other top HVAC companies near Rockville
- NARFIX HEATING AND AIR CONDITIONING LLCScore 79 · 5.0★ (309)
- B&B Air Conditioning & Heating ServiceScore 78 · 4.9★ (709)
- Glenmont Heating & Air ConditioningScore 77 · 4.9★ (498)
- Metro Services HVACScore 77 · 4.9★ (421)