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HVAC Service
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24-hour Emergency Service


    In addition to quick 24-hour Emergency Service, Calvert can perform a wide variety of work for our clients.  This work includes:

        Residential Services
        Commercial Services
        Planned Maintenance Service
        Service Contracts
        Air Conditioning Repairs and Replacments
        Coil Repairs and Replacements
        Condensor Unit Repairs and Replacement
        Refrigeration Lineset Repairs and Replacements
        Energy Management Systems
        Thermostats and Control Wiring
        Make-up Air Units (MAU)
        Rooftop Unit Repairs and Repalcements (RTU)
        Exhaust Systems Design, Installation and Repair
        Computer Room Cooling (Liebert and others)
        Heat Pump Systems (air & water source)
        Thru-wall Units
        Package Mini-units
        High-efficiency Systems
        Gas Furnaces
        Oil Furnaces
        Unit Heaters (gas, electric, steam, hot water)
        Humidifiers
        Ductwork Design and Installation
        Flues and Chimneys
        Hydronic (steam & hot water) Heating Service
        Boiler Repairs and Replacements - Commercial and Residential
        Radiator & Baseboard Repairs and Replacements
        Combustion Efficiency Reports
        Cooling Towers
        Pumps of all kinds
        Condensate Piping
        Refrigeration Unit Repairs and Replacments
        Complete Design & Construction Services for Commercial and                 Residential HVAC Systems