
- 240-273-4879
- Year Established: 1987
- Homeowners Served: 70,000+
- Number of Employees: 80+
- License Number(s): MD HVAC 02-47186
“The technician was very knowledgeable and helpful and gave us great customer service would definitely recommend.”
“I was thoroughly satisfied with the products and workmanship for my HVAC replacement and my hot water heater replacement.”
“All their staff”
“The service technician was helpful, knowledgeable and trustworthy.”
“Every easy to get someone to come out to do the work I needed done”
“Extremely professional”
“Great service. Technicians explain everything before they do anything so you can decide if you want to have it all done or just part of it.”
“I have been very pleased with my plumbing services”
“Tech. very good, arrived on time. Very professional explained why maintenance plan is best approach for furnace operation.”
“Mike was very helpful”
“Everyone”
“service tech was very friendly and professional explained every step of job after job leaving with a smile and thanks for chosing Horizon”
“Horizon Services met my expectations in all areas. They worked on two heat pumps for me, and I had a consultation for plumbing. Everybody I dealt with has been outstanding.”
“I was satisfied with the customer service and them providing inside education about our HVAC system.”
“They exceeded my expectations because they arrived on time, and they were courteous and polite.”
“They were very personable, on time, and I think they did a good job.”

- 240-273-4879
- Year Established: 1987
- Homeowners Served: 70,000+
- Number of Employees: 80+
- License Number(s): MD HVAC 02-47186
- Five Star Guarantee
- Licensed
- General Liability Insurance
- Workers' Compensation Insurance
- 24/7 Emergency Service
Heat pump installation, repair, and maintenance
Air conditioning installation, repair, and maintenance
Thermostat installation, repair, and maintenance
Plumbing inspections, repairs, maintenance, and installation
Sewer and drain services
Indoor air quality solutions, installation, repair, and maintenance
24/7 emergency service
Two-year guarantee on repairs
One-year drain clearing guarantee
Up to a ten-year guarantee on water heater installations