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HVAC Services

Whether it’s repair, install, maintenance, service, or replacement. We do it all! HVAC Services

Heating & Air Services

Heating and Air Services by the best HVAC Contractors in the Business. Heating & Air Services

Air Conditioning Repair

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Heating Repair Services

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Air Conditioner Repair & Furnace Repair College Park, MD

United Service Specialists

A.B. Chelini has been servicing the Washington Metropolitan area as a family owned and operated HVAC business for over 35 years. We provide state of the art service with cutting edge products while providing old-fashioned customer care. Our top priority is you, the customer; from the initial inquiry until we have surpassed your expectations.

We have technicians that have been part of the Chelini family for over 20 years and they help train our new technicians, facilitating continuous quality. We are constantly continuing our education, certifications and licensing. Servicing all brands of air conditioners, furnaces, heat pumps, boilers, water heaters and other equipment, we provide reassurance that you will get the best options to meet your needs.

We strive to make everything easy for our customers by offering email confirmations of appointments and calls to give you time to meet us so you can work us into YOUR work schedule. We have 24-hour emergency service so you are never without help and we offer maintenance agreements so WE can take care of your systems so you don’t have to! If you live in College ParkBethesdaRockvilleGaithersburgGermantownClarksburgSilver SpringBowie  or the surrounding area and you need furnace repair, air conditioning repair, or have any other heating and air conditioning repairs, services, or installations give us a call today!


Need Air Conditioner Repair or Furnace Repair? Look no further. The HVAC experts at United Service Specialists are here to help you today. We have the training and experience necessary to handle all sorts of heating and air conditioning issues for all brands of heating and air equipment. We’re not limited to repairs either. Our HVAC technicians can help you with repairs, service, maintenance, replacement or installation of heating and air conditioning equipment for your home or office. Call us today!

Call us if you need heating repair services, Air Conditioning Repair Services, or other HVAC services