Trustworthy Heating, Plumbing, and Air Conditioning Services for Families in Hartly, Delaware

Homeowners in Hartly wouldn’t dream of using anyone except Horizon. We’re the best choice in Delaware for plumbing, heating, and air conditioning services. Aside from expert proficiency, we also deliver customer service so good you’ll want to tell your friends.

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For over 30 years, the people of Hartly have chosen Horizon. We’re a proud member of the community and look forward to serving you.

Air Conditioning

Delaware summers can get rough without great AC. A professional tune-up helps ensure your air conditioning operates at peak performance to keep you cool (and lower your utility bills). We’re also here when you need repairs, new unit installation, or upgrades like smart thermostats or new filters.


Even a day without working heat is uncomfortable and dangerous during a Hartly winter. We’re experts in all heater maintenance and repairs, including heat pump replacement, furnace installation, and whatever else you need to keep your home comfortable and energy bills low.


We’re not just heating and cooling experts; we’re also local favorites for plumbing repairs and maintenance. We fix all types of dripping faucets, clogged pipes, line damage, water heater problems, and more. Don’t let a minor leak turn into a major problem. Schedule an affordable tune-up for peace of mind.

Horizon Loves Hartly

The families of Hartly, DE, are our friends and neighbors. Our service area for customers covers the entire 19953, including Myers Point, Dover International Speedway, and Tri-State Equine Rescue. We’re proud to remain local favorites for over three decades.

When you call us, we deliver fast and friendly service. You don’t have to worry about high-pressure sales or hidden fees. We’ll craft custom service solutions based on your needs and budget. How can we help you today?

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Connecting you to your local Horizon team for expert technicians, same-day service, and a job done right.