ServiceMark Heating, Cooling & Plumbing Now Part of Horizon Services

Locally operated Horizon Services is excited to announce that the residential division of ServiceMark Heating, Cooling & Plumbing will integrate with Horizon Services’ teams in Pennsylvania and Delaware, while continuing to operate under the ServiceMark brand. With matched reputations for outstanding residential service, both teams look forward to sharing expertise for the benefit of their customers and fellow employees.

Founded in 1987, Horizon Services supports homeowners throughout Delaware, Maryland, Pennsylvania and New Jersey with outstanding comfort solutions and award-winning customer service. Horizon’s leadership team anticipates a host of new opportunities for expanded service and branding in its home marketplace.

ServiceMark’s long-standing reputation for excellence is rooted in its 65-year history of customer-focused care. Supported by a highly-trained team of technicians and customer service professionals, customers in residential markets trust ServiceMark to provide outstanding comfort solutions.

“We’re honored to have been selected to move ServiceMark’s residential division forward as a business and a brand,” says Dave Geiger, founder and CEO of Horizon Services. “Just like Horizon, their team has a wealth of knowledge and experience that will benefit customers of both brands.”

“We respect the reputation and drive of Horizon Services,” says Brian Nefferdorf, current Operations Manager of ServiceMark Heating, Cooling & Plumbing. “We’re thrilled to work with their team, and look forward to sharing best practices.”

A unique family legacy also reinforces this growing relationship. John Cameron Jr., Sales Manager for Horizon Services, first entered the industry as part of John H. Cameron & Sons, Inc. Cameron’s family business later became a part of the ServiceMark group. Says Cameron, “It’s a great feeling to reunite so many familiar faces. Each group offers unique insight and expertise. I look forward to more shared success.”

About ServiceMark
ServiceMark Heating, Cooling & Plumbing, an AmeriGas company, has kept customers comfortable for over 65 years. ServiceMark’s team of expert technicians, installers, master plumbers, sales professionals, and support staff promise reliability, quality, and satisfaction on every project, regardless of size. Learn more about ServiceMark’s tradition of excellence at

About Horizon Services
Locally operated Horizon Services is the award-winning cooling, heating and plumbing service trusted by customers throughout the region since 1987. Eight-time Lennox award winners for service and support, Horizon delivers exceptional comfort solutions that respect each customer’s home, time, and wallet. Find out more at


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