Heating Contractors in Clinton, MD

Comprehensive list of contractors in Clinton, MD offering heating systems installation, maintenance and repair services.

Business Listings

Horizon Mechanical Services. is your complete commercial air conditioning and mechanical contractor. We have been servicing the Maryland, DC, and Virginia metropolitan area since 2001. Our master technicians are trained and licensed to service several brands of air and water cooled chillers, pneumatic and direct digital control DDC systems, cooling towers, and more.


Our goal is to provide to our clients quality products and services, at realistic prices, in an environmentally sound manner, while delivering opportunities for employees and contributing to the well being of the community. With this site, our clients have the capability to order all their fuel online! Just fill out a short form and you're on your way.


Whether you have an air conditioner, heat pump, furnace, boiler, water heater or plumbing requirements. We are pleased to supply the service, sale and quality installation of cooling, plumbing and heating equipment to a growing list of satisfied clients in the Maryland Anne Arundel, Montgomery and Prince George's County and Washington, D.C. area.



April 2009Thornton earns Mechanical Service Contractors of America MSCA STAR designation after surpassing stringent business and HVAC service standards set forth by MSCA. Thornton is the mechanical contractor for William V. Walsh Construction Company for this innovative project.


Our years of knowledge will bring you a Tradition of Excellence & Customer Satisfaction.


Christopher F. Kelly Sr. - President Since October 1994, Christopher F. Kelly Sr. has been the owner/president of Kelly HVAC., a complete service mechanical, sheet metal and plumbing contractor specializing in the service industry. Before starting his own business, Mr. Kelly completed five years in the Steamfitters Local 602 Apprenticeship Program while working for Giant Foods and Johnson Controls.


J&P has its own sheet metal shop, so we can economically fabricate any ductwork that a job requires and install that ductwork speedily and efficiently. From comprehensive service maintenance contracts to periodic service calls. J&P has the expertise to answer any and all heating and air conditioning questions. You deserve the highest service for your home!


Every family should be capable to stay cool and comfortable during the hot summer months. At COUNTY HEATING & AIR CONDITIONING., we are dedicated to assisting you find the correct air conditioning system for your requirements and budget. We're here to ensure that no matter what system you have, it's always working safely and efficiently so your home comfort is 100% Worry Free!