# HVAC contractors in Gaithersburg

2 hvac contractors near Gaithersburg, ranked by the strength of independent public evidence (reviews, verified credentials and registry data cross-checked across named sources — no ads, no paid placement). Below are the top 2 by evidence.

| Trader | Location | Rating | Reviews | Named sources |
| --- | --- | --- | --- | --- |
| [Presidential Heating & Air Conditioning, Inc](https://us.mytrustedtraders.com/traders/presidential-heating-air-conditioning-inc) | Gaithersburg | 4.8/5 | 763 | Porch |
| [Michael Bonsby Heating & Air Conditioning LLC](https://us.mytrustedtraders.com/traders/michael-bonsby-heating-air-conditioning-llc) | Gaithersburg | 4.7/5 | 565 | Porch |

Each trader's full public-evidence record is at its profile URL (append `/md` for a Markdown version). See all hvac contractors in the United States at `https://us.mytrustedtraders.com/find/hvac-contractor`.

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Source: MyTrustedTraders — https://us.mytrustedtraders.com/find/hvac-contractor/gaithersburg
Real public evidence only: every figure traces to a named source and is cross-checked. If a source does not carry a field, it is not shown.