# Heating and air conditioning companies in Delaware

There are **547 heating and air conditioning companies** in Delaware (CityPreferred count, October 2026). Wilmington has the most (102), then Newark (55).

## Delaware cities

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

| City | Companies |
| --- | --- |
| Wilmington | 102 |
| Newark | 55 |
| New Castle | 37 |
| Dover | 28 |
| Middletown | 23 |
| Bear | 22 |
| Lewes | 22 |
| Millsboro | 22 |

## Delaware and the rest of the country

Delaware has 547 of the 169,801 heating and air conditioning companies in the country (0%). [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 Delaware?

547, by CityPreferred's count as of October 2026.

### Which Delaware city has the most?

Wilmington, with 102, followed by Newark with 55.

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

Last reviewed: 2026-10-01

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