# Heating and air conditioning companies in Maryland

There are **3,677 heating and air conditioning companies** in Maryland (CityPreferred count, October 2026). Baltimore has the most (217), then Silver Spring (106).

## Maryland cities

**Heating and air conditioning companies in Maryland by city, October 2026**

| City | Companies |
| --- | --- |
| Baltimore | 217 |
| Silver Spring | 106 |
| Gaithersburg | 100 |
| Frederick | 98 |
| Annapolis | 85 |
| Rockville | 76 |
| Laurel | 71 |
| Columbia | 64 |
| Salisbury | 57 |
| Bowie | 56 |
| Glen Burnie | 53 |
| Waldorf | 51 |
| Westminster | 46 |
| Pasadena | 45 |
| Upper Marlboro | 44 |
| Hyattsville | 41 |
| Hagerstown | 41 |
| Ellicott City | 40 |
| Beltsville | 40 |
| Bel Air | 37 |
| Essex | 36 |
| Parkville | 35 |
| Easton | 34 |
| Mount Airy | 34 |
| Elkton | 33 |
| Germantown | 31 |
| Cumberland | 29 |
| Bethesda | 29 |
| Clinton | 29 |
| Crofton | 29 |
| Maryland City | 28 |
| Edgewater | 28 |
| Fort Washington | 27 |
| Capitol Heights | 26 |
| Temple Hills | 26 |
| Halethorpe | 25 |
| Dundalk | 24 |
| Severna Park | 24 |
| Millersville | 23 |
| Lanham | 23 |
| Jessup | 23 |
| Severn | 23 |
| Towson | 22 |
| Reisterstown | 21 |
| Elkridge | 21 |
| Mechanicsville | 21 |
| Middle River | 21 |
| Catonsville | 20 |
| Berlin | 20 |
| Joppa | 20 |

## Maryland and the rest of the country

Maryland has 3,677 of the 169,801 heating and air conditioning companies in the country (2%). [All states](https://citypreferred.com/data/hvac).

## What is counted

Independent businesses that do this work, for homes or for businesses. Suppliers, stores and national chains are left out. Being counted does not mean a company is licensed, insured or recommended. A city is listed when it has 20 or more. [How we count](https://citypreferred.com/data-methodology).

## Questions and answers

### How many heating and air conditioning companies are there in Maryland?

3,677, by CityPreferred's count as of October 2026.

### Which Maryland city has the most?

Baltimore, with 217, followed by Silver Spring with 106.

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Canonical page: https://citypreferred.com/data/hvac/md

Last reviewed: 2026-10-01

Publisher: CityPreferred (https://citypreferred.com)