Dependable Heating, Plumbing, and Air Conditioning Services for Customers in Marriottsville, Maryland

Any homeowner in Marriottsville, Maryland, can depend on Horizon for not only heating and cooling services but also top-notch plumbing. For roughly 30 years, we’ve earned the trust of locals for our expertise, fair pricing, and excellent customer service.

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Families can count on us for emergency home services 24-hours a day, every single day of the year, even on holidays. Our technicians spend hundreds of hours training and gaining hands-on experience before they arrive at your door, so you know you’re getting expert care.

Air Conditioning

Families shouldn’t have to endure the summer months without comfort. From an AC tune-up to a new unit install, we handle air conditioning issues of all kinds. We can fix or replace air conditioners in all varieties of homes.


Customers know us for our knowledgeable heater services. Whether you have a problem with a boiler, heat pump, or furnace, our team is the one to call. Our technicians are rigorously trained and know how to repair or sorts of heating issues, as well as install Nest thermostats, humidifiers, and fix or replace EZ traps.


Heating and air conditioning are not are only areas of expertise. We also have trained team members for all of your plumbing problems, from damaged sewer lines to that sump pump that needs replacing. We can install new faucets, reverse osmosis systems, and even come out to clear drains, so you don’t have to worry about water backups.

Horizon Loves Marriottsville

If you live in or around 21104, Horizon wants to work with you! We love the Marriottsville, MD area, and are proud of everything from the Waverly Historic Mansion to the Patapsco Valley State Park. Whether you just need a professional tune-up or have a heating, cooling, or plumbing home emergency, we are here for you!

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