Horizon Services is the premier heating, air conditioning, plumbing, drain cleaning and sewer services company in Delaware (N ... ew Castle County & Kent County), Pennsylvania (Delaware County, Chester County, Montgomery County & Bucks County), New Jersey (Gloucester County, Camden County, Burlington County, Mercer County, Somerset County, & Middlesex County) and Maryland (Cecil County, Baltimore County, Carroll County, Harford County, Montgomery County, & Howard County). Horizon provides a full-range of residential services including: heating and air conditioning repair, maintenance and tune-ups; comprehensive plumbing and drain cleaning services; and trench-less sewer line/water line inspection, repair and replacement. We also sell and install high-efficiency heating and cooling systems from leading manufacturers such as Lennox, Trane, Ruud, Rheem, York, Comfortmaker, Janitrol, American Standard, Carrier, Bryant and Bradford White. Horizon Services is the company to call in the Delaware Valley for on-time service, up-front pricing and a job done right and clean the first time...GUARANTEED. We're so confident you'll be pleased with our fast, friendly and professional services and equipment installations, you'll become a customer for life! Visit our website at HorizonServices.com © By Horizon Services, LLC. All Rights Reserved. DE License # PL0000726, HL0000299. Contractor Reg. # PA017876, PA057742. NJ HVACR Lic. # 19370, M-PL Lic. # 12323 – David Geiger. MD Master HVACR contractor Lic. # 47186, Master Plumber Lic. # 63739 – David Geiger. read more