To many homeowners, finding the right fit for heating, plumbing, and AC services can feel daunting. But when it comes to service in Dover, Delaware, Horizon Services has a proven track record of exceeding homeowner expectations. We focus on delivering excellent customer service—along with some of the most comprehensive warranties in the industry—to address all your heating and air conditioning (and plumbing) needs.

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Air Conditioning

Heating and cooling is a priority for many families because the right temperature means adequate comfort at home. For regular or emergency AC service, Horizon addresses your concerns and ensures your air conditioning is performing properly.


From your seasonal tune-up to emergency calls when your heater quits mid-winter, Horizon is on hand to deal with every scenario. Like air conditioning systems, your furnace is another critical element in keeping you and your family safe and comfortable. You can rely on Horizon to respond quickly and apply the expertise you trust.


Though many people attempt to DIY plumbing repairs, that usually results in more mess and significant damage. Whatever the scenario, be it a leaky faucet or a whole-house breakdown, our professional staff will address the problem promptly.

Horizon Loves Dover

Horizon is proud to serve Dover, DE, and our local community in 19901 and surrounding zip codes. With its range of attractions—from the Biggs Museum of American Art to the epic Dover International Speedway and even the Dover Downs Casino & Hotel, the city is full of entertainment and culture.

Our enjoyment of the vibrant local community extends to our interactions with you, our customers. Whether it’s a professional tune-up or an emergency call to help you with a challenging situation, our service staff appreciate the opportunity to serve you.