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Mason Mechanical Services LLC

Jefferson, MD 21755

5.0

Company Info

  • Annual Vol Not Provided

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Our Story

Mason Mechanical Services LLC has been providing dedicated Commercial HVAC service you can count on to Maryland and Virginia for over 10 years with 25 years of experience. From Frederick MD to Leesburg VA, we serve most areas throughout Virginia and Maryland. We specialize in service, repair and equipment change-outs. We do not do new construction install.

We repair all makes and models and specialize in:Service contracts, Air conditioners, Chillers, Boilers, Rooftop units, Cooling towers, VFD's, oil fired burner, water and steam boilers, tankless water heaters.

Broken refrigeration equipment can slow your business down...we are available 24 hours a day, 7 days a week, prepared for any situation.

If you have an air conditioner, chiller, ice machine, walk-in freezer or cooler that isn't actually keeping things cool, give us a call.

 

 

 

 

What We Do

Regions & Counties Serviced

  • Washington D.C.

Maryland All

Virginia All

Our CSI Codes

11 22 00.00.01 - Refrigerated Display Equipment
11 47 00.00.01 - Ice Machines
13 50 00.00.01 - Special Instrumentation
23 01 20 - Operation and Maintenance of HVAC Piping and Pumps
23 01 30 - Operation and Maintenance of HVAC Air Distribution
23 01 50 - Operation and Maintenance of Central Heating Equipment
23 01 60 - Operation and Maintenance of Central Cooling Equipment
23 01 70 - Operation and Maintenance of Central HVAC Equipment
23 01 80 - Operation and Maintenance of Decentralized HVAC Equipment
23 05 13 - Common Motor Requirements for HVAC Equipment
23 06 20 - Schedules for HVAC Piping and Pumps
23 06 30 - Schedules for HVAC Air Distribution
23 06 30.16 - Air Terminal Unit Schedule
23 06 30.19 - Air Outlet and Inlet Schedule
23 06 50 - Schedules for Central Heating Equipment
23 06 50.13 - Heating Boiler Schedule
23 06 60 - Schedules for Central Cooling Equipment
23 06 60.13 - Refrigerant Condenser Schedule
23 06 60.16 - Packaged Water Chiller Schedule
23 06 70 - Schedules for Central HVAC Equipment
23 06 70.13 - Indoor, Central-Station Air-Handling Unit Schedule
23 06 70.16 - Packaged Outdoor HVAC Equipment Schedule
23 06 80 - Schedules for Decentralized HVAC Equipment
23 06 80.13 - Decentralized Unitary HVAC Equipment Schedule
23 06 80.16 - Convection Heating and Cooling Unit Schedule
23 09 13 - Instrumentation and Control Devices for HVAC
23 09 13.13 - Actuators and Operators
23 09 13.23 - Sensors and Transmitters
23 09 23 - Direct-Digital Control System for HVAC
23 09 33 - Electric and Electronic Control System for HVAC
23 09 43 - Pneumatic Control System for HVAC
23 09 53 - Pneumatic and Electric Control System for HVAC
23 09 93 - Sequence of Operations for HVAC Controls
23 20 00.00.01 - HVAC Piping and Pumps
23 23 16 - Refrigerant Piping Specialties
23 23 19 - Refrigerant Safety Relief Valve Discharge Piping
23 23 23 - Refrigerants
23 24 13 - Internal-Combustion Engine Remote-Radiator Coolant Piping
23 30 00.00.01 - HVAC Air Distribution
23 31 16.13 - Fibrous-Glass Ducts
23 31 16.16 - Thermoset Fiberglass-Reinforced Plastic Ducts
23 36 13 - Constant-Air-Volume Units
23 36 16 - Variable-Air-Volume Units
23 50 00.00.01 - Central Heating Equipment
23 52 33.19 - Copper Water-Tube Boilers
23 52 13 - Electric Boilers
23 52 16 - Condensing Boilers
23 52 16.13 - Stainless-Steel Condensing Boilers
23 52 16.16 - Aluminum Condensing Boilers
23 52 19 - Pulse Combustion Boilers
23 52 23 - Cast-Iron Boilers
23 52 33 - Water-Tube Boilers
23 52 33.13 - Finned Water-Tube Boilers
23 52 33.16 - Steel Water-Tube Boilers
23 52 39 - Fire-Tube Boilers
23 52 39.13 - Scotch Marine Boilers
23 52 39.16 - Steel Fire-Tube Boilers
23 53 16 - Deaerators
23 57 19 - Liquid-to-Liquid Heat Exchangers
23 57 19.13 - Plate-Type, Liquid-to-Liquid Heat Exchangers
23 57 19.16 - Shell-Type, Liquid-to-Liquid Heat Exchangers
23 60 00.00.01 - Central Cooling Equipment
23 61 23 - Rotary-Screw Refrigerant Compressors
23 62 13 - Packaged Air-Cooled Refrigerant Compressor and Condenser Units
23 62 23 - Packaged Water-Cooled Refrigerant Compressor and Condenser Units
23 63 13 - Air-Cooled Refrigerant Condensers
23 63 23 - Water-Cooled Refrigerant Condensers
23 63 33 - Evaporative Refrigerant Condensers
23 64 13 - Absorption Water Chillers
23 64 13.13 - Direct-Fired Absorption Water Chillers
23 64 13.16 - Indirect-Fired Absorption Water Chillers
23 64 16 - Centrifugal Water Chillers
23 64 19 - Reciprocating Water Chillers
23 64 23 - Scroll Water Chillers
23 64 26 - Rotary-Screw Water Chillers
23 65 13 - Forced-Draft Cooling Towers
23 65 13.13 - Open-Circuit, Forced-Draft Cooling Towers
23 65 13.16 - Closed-Circuit, Forced-Draft Cooling Towers
23 65 16 - Natural-Draft Cooling Towers
23 65 23 - Field-Erected Cooling Towers
23 65 33 - Liquid Coolers
23 70 00.00.01 - Central HVAC Equipment
23 71 13 - Thermal Heat Storage
23 71 13.13 - Room Storage Heaters for Thermal Storage
23 71 13.23 - Pressurized-Water Thermal Storage Tanks
23 71 16 - Chilled-Water Thermal Storage
23 71 19 - Ice Storage
23 71 19.13 - Internal Ice-on-Coil Thermal Storage
23 71 19.16 - External Ice-on-Coil Thermal Storage
23 71 19.19 - Encapsulated-Ice Thermal Storage
23 71 19.23 - Ice-Harvesting Thermal Storage
23 71 19.26 - Ice-Slurry Thermal Storage
23 72 13 - Heat-Wheel Air-to-Air Energy-Recovery Equipment
23 72 16 - Heat-Pipe Air-to-Air Energy-Recovery Equipment
23 72 19 - Fixed-Plate Air-to-Air Energy-Recovery Equipment
23 72 23 - Packaged Air-to-Air Energy-Recovery Units
23 73 13 - Modular Indoor Central-Station Air-Handling Units
23 73 23 - Custom Indoor Central-Station Air-Handling Units
23 74 13 - Packaged, Outdoor, Central-Station Air-Handling Units
23 74 23.13 - Packaged, Direct-Fired, Outdoor, Heating-Only Makeup-Air Units
23 74 23.16 - Packaged, Indirect-Fired, Outdoor, Heating-Only Makeup-Air Units
23 74 33 - Packaged, Outdoor, Heating and Cooling Makeup Air-Conditioners
23 75 13 - Custom-Packaged, Outdoor, Central-Station Air-Handling Units
23 75 23 - Custom-Packaged, Outdoor, Heating and Ventilating Makeup-Air Units
23 75 33 - Custom-Packaged, Outdoor, Heating and Cooling Makeup Air-Conditioners
23 80 00.00.01 - Decentralized HVAC Equipment
23 81 13 - Packaged Terminal Air-Conditioners
23 81 16 - Room Air-Conditioners
23 81 19 - Self-Contained Air-Conditioners
23 81 19.13 - Small-Capacity Self-Contained Air-Conditioners
23 81 19.16 - Large-Capacity Self-Contained Air-Conditioners
23 81 23 - Computer-Room Air-Conditioners
23 81 26 - Split-System Air-Conditioners
23 82 13 - Valance Heating and Cooling Units
23 82 16 - Air Coils
23 82 19 - Fan Coil Units
25 01 10 - Operation and Maintenance of Integrated Automation Network Equipment
25 01 20 - Operation and Maintenance of Integrated Equipment
25 01 30 - Operation and Maintenance of Integrated Automation Instrumentation and Terminal Devices
25 01 90 - Diagnostic Systems for Integrated Automation
25 05 53 - Identification for Integrated Automation
25 06 11 - Schedules for Integrated Automation Network
25 06 12 - Schedules for Integrated Automation Network Gateways
25 06 13 - Schedules for Integrated Automation Control and Monitoring Network
25 06 14 - Schedules for Integrated Automation Local Control Units
25 06 30 - Schedules for Integrated Automation Instrumentation and Terminal Devices
25 30 00.00.01 - Integrated Automation Instrumentation and Terminal Devices
25 31 00.00.01 - Integrated Automation Instrumentation and Terminal Devices for Facility Equipment
25 35 19 - Integrated Automation Control Valves
25 35 26 - Integrated Automation Compressed Air Supply
25 36 19 - Integrated Automation Current Sensors
25 38 00.00.01 - Integrated Automation Instrumentation and Terminal Devices for Electronic Safety and Security Systems
25 51 00.00.01 - Integrated Automation Control of Facility Equipment
25 55 00.00.01 - Integrated Automation Control of HVAC
25 56 00.00.01 - Integrated Automation Control of Electrical Systems
25 90 00.00.01 - Integrated Automation Control Sequences
25 91 00.00.01 - Integrated Automation Control Sequences for Facility Equipment
25 95 00.00.01 - Integrated Automation Control Sequences for HVAC
25 96 00.00.01 - Integrated Automation Control Sequences for Electrical Systems
26 09 23 - Lighting Control Devices
26 09 36 - Modular Dimming Controls
26 09 36.13 - Manual Modular Dimming Controls
26 09 36.16 - Integrated Multipreset Modular Dimming Controls
26 09 43 - Network Lighting Controls
26 09 43.13 - Digital-Network Lighting Controls
26 09 43.16 - Addressable Fixture Lighting Control
26 24 19 - Motor-Control Centers
28 35 13 - Refrigerant Detection and Alarm Control, GUI, and Logic Systems
28 35 23 - Refrigerant Detection and Alarm Integrated Audio Evacuation Systems
28 35 33 - Refrigerant Detection Sensors
34 43 26.13 - Airfield Lighting Control Equipment
34 43 26.16 - Airfield Lighting PLC Control Equipment
40 90 00.00.01 - Instrumentation and Control for Process Systems
40 92 49 - Variable Frequency Drives
40 94 23 - Distributed Process Control Systems
40 94 43 - Programmable Logic Process Controllers
42 01 20 - Operation and Maintenance of Process Cooling Equipment
42 06 20 - Schedules for Process Cooling Equipment
42 11 13 - Low-Pressure Process Boilers
42 11 16 - Intermediate-Pressure Process Boilers
42 11 19 - High-Pressure Process Boilers
42 11 23 - Specialty Process Boilers
42 13 26 - Industrial Solar Radiation Heat Exchangers
42 21 13 - Open-Circuit Process Cooling Towers
42 21 16 - Closed-Circuit Process Cooling Towers
42 22 13 - Centrifugal Process Chillers and Coolers
42 22 16 - Reciprocating Process Chillers and Coolers
42 22 19 - Refrigerant Process Chillers and Coolers
42 22 23 - Rotary Process Chillers and Coolers
42 22 26 - Thermoelectric Process Chillers and Coolers
48 11 13 - Fossil Fuel Electrical Power Plant Boilers

Gallery

Featured Image 1
Commercial heating and cooling
Featured Image 2
Blue Ridge Meats - refrigeration system replacement
Featured Image 3
Residential heating services
Featured Image 4
Data Center Cooling

Preferred Brands

Mitsubishi Electric
Mitsubishi Electric
Carrier
Carrier
Trane
Trane
Johnson Controls
Johnson Controls
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