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Our Story
Proudly Serving Colorado Since 1972!
W M Mechanical has been a name trusted in Colorado for almost 50 years. Our quality of work is second-to-none. We assure each customer:
- Attention to Detail
- Fair Pricing
- Outstanding Service
We look forward to serving you!
-J M Dallmann, President/Owner
What We Do
Commercial Experience
Animal Hospital / Kennel
Apartments & Condominiums
Arena / Stadium
Assisted Living
Athletic Field
Auto Dealership / Service
Bank
Casinos
Church / Synagogue
City / Town Hall
Club House / Community Center
Court House
Data Centers - Mission Critical
Design Build
Education (K-12)
Fire / Police Station
Fitness Center
Gas Station
Golf Course
Government
Grocery Stores
Historic Preservation
Hospital / Nursing Home
Hotel / Motel
House
Industrial Maintenance
Jail / Prison
Laboratory
Library
Lighting Retrofits
Manufacturing Plant
Marine
Medical Office
Military
Misc Project
Mixed Use
Museum
Non-Residential Building
Office Building
Park / Playground
Parking Garage
Post Office
Power Generation & Distribution
Pre-Manufactured Structures
Radio / Television Station
Renewable Energy
Residential Building
Restaurant
Retail Store
School / College / University
Secure and Shielded Facilities
Sewage / Water Treatment Plant
Single Family Residential
Storage Facility / Warehouse
Tennis Court
Terminal - Airport / Bus / Railroad
Theater
Theme Park
Tract Housing
Tunnel
Regions & Counties Serviced
- Colorado and Wyoming
Colorado 20
- Adams
- Arapahoe
- Boulder
- Broomfield
- Clear Creek
- Custer
- Denver
- Douglas
- El Paso
- Fremont
- Gilpin
- Jefferson
- Kiowa
- Larimer
- Morgan
- Park
- Pueblo
- Summit
- Teller
- Weld
Our CSI Codes
23 01 10 - Operation and Maintenance of Facility Fuel Systems
23 01 20 - Operation and Maintenance of HVAC Piping and Pumps
23 01 30 - Operation and Maintenance of HVAC Air Distribution
23 01 30.51 - HVAC Air Duct Cleaning
23 01 50 - Operation and Maintenance of Central Heating Equipment
23 01 60 - Operation and Maintenance of Central Cooling Equipment
23 01 60.71 - Refrigerant Recovery/Recycling
23 01 70 - Operation and Maintenance of Central HVAC Equipment
23 01 80 - Operation and Maintenance of Decentralized HVAC Equipment
23 01 90 - Diagnostic Systems for HVAC
23 05 13 - Common Motor Requirements for HVAC Equipment
23 05 16 - Expansion Fittings and Loops for HVAC Piping
23 05 19 - Meters and Gages for HVAC Piping
23 05 23 - General-Duty Valves for HVAC Piping
23 05 29 - Hangers and Supports for HVAC Piping and Equipment
23 05 33 - Heat Tracing for HVAC Piping
23 05 48 - Vibration and Seismic Controls for HVAC Piping and Equipment
23 05 53 - Identification for HVAC Piping and Equipment
23 05 63 - Anti-Microbial Coatings for HVAC Ducts and Equipment
23 05 66 - Anti-Microbial Ultraviolet Emitters for HVAC Ducts and Equipment
23 05 93 - Testing, Adjusting, and Balancing for HVAC
23 06 10 - Schedules for Facility Fuel Service Systems
23 06 20 - Schedules for HVAC Piping and Pumps
23 06 20.13 - Hydronic Pump Schedule
23 06 30 - Schedules for HVAC Air Distribution
23 06 30.13 - HVAC Fan Schedule
23 06 30.16 - Air Terminal Unit Schedule
23 06 30.19 - Air Outlet and Inlet Schedule
23 06 30.23 - HVAC Air Cleaning Device 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 06 80.19 - Radiant Heating Unit Schedule
23 07 13 - Duct Insulation
23 07 16 - HVAC Equipment Insulation
23 07 19 - HVAC Piping Insulation
23 08 00.00.01 - Commissioning of HVAC
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 13.33 - Control Valves
23 09 13.43 - Control Dampers
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 11 13 - Facility Fuel-Oil Piping
23 11 16 - Facility Gasoline Piping
23 11 23 - Facility Natural-Gas Piping
23 11 26 - Facility Liquefied-Petroleum Gas Piping
23 20 00.00.01 - HVAC Piping and Pumps
23 21 13 - Hydronic Piping
23 21 13.13 - Underground Hydronic Piping
23 21 13.23 - Aboveground Hydronic Piping
23 21 13.33 - Ground-Loop Heat-Pump Piping
23 21 23 - Hydronic Pumps
23 21 23.13 - In-Line Centrifugal Hydronic Pumps
23 21 23.16 - Base-Mounted, Centrifugal Hydronic Pumps
23 21 23.19 - Vertical-Mounted, Double-Suction Centrifugal Hydronic Pumps
23 21 23.23 - Vertical-Turbine Hydronic Pumps
23 21 29 - Automatic Condensate Pump Units
23 23 13 - Refrigerant Piping Valves
23 23 16 - Refrigerant Piping Specialties
23 23 19 - Refrigerant Safety Relief Valve Discharge Piping
23 23 23 - Refrigerants
23 25 13 - Water Treatment for Closed-Loop Hydronic Systems
23 25 16 - Water Treatment for Open Hydronic Systems
23 25 19 - Water Treatment for Steam System Feedwater
23 25 23 - Water Treatment for Humidification Steam System Feedwater
23 30 00.00.01 - HVAC Air Distribution
23 31 13 - Metal Ducts
23 31 13.13 - Rectangular Metal Ducts
23 31 13.16 - Round and Flat-Oval Spiral Ducts
23 31 13.19 - Metal Duct Fittings
23 31 16 - Nonmetal Ducts
23 31 16.13 - Fibrous-Glass Ducts
23 31 16.16 - Thermoset Fiberglass-Reinforced Plastic Ducts
23 31 16.19 - PVC Ducts
23 31 16.26 - Concrete Ducts
23 31 19 - HVAC Casings
23 32 13 - Fabricated, Metal Air Plenums
23 32 33 - Air-Distribution Ceiling Plenums
23 32 36 - Air-Distribution Floor Plenums
23 32 39 - Air-Distribution Wall Plenums
23 32 43 - Air-Distribution Chases Formed by General Construction
23 32 48 - Acoustical Air Plenums
23 33 13 - Dampers
23 33 13.13 - Volume-Control Dampers
23 33 13.16 - Fire Dampers
23 33 13.19 - Smoke-Control Dampers
23 33 13.23 - Backdraft Dampers
23 33 19 - Duct Silencers
23 33 23 - Turning Vanes
23 33 33 - Duct-Mounting Access Doors
23 33 43 - Flexible Connectors
23 33 46 - Flexible Ducts
23 33 53 - Duct Liners
23 34 13 - Axial HVAC Fans
23 34 16 - Centrifugal HVAC Fans
23 34 23 - HVAC Power Ventilators
23 34 33 - Air Curtains
23 35 13 - Sawdust Collection Systems
23 35 16 - Engine Exhaust Systems
23 35 16.13 - Positive-Pressure Engine Exhaust Systems
23 35 16.16 - Mechanical Engine Exhaust Systems
23 36 13 - Constant-Air-Volume Units
23 36 16 - Variable-Air-Volume Units
23 37 13 - Diffusers, Registers, and Grilles
23 37 16 - Fabric Air Distribution Devices
23 37 23 - HVAC Gravity Ventilators
23 37 23.13 - HVAC Gravity Dome Ventilators
23 37 23.16 - HVAC Gravity Louvered-Penthouse Ventilators
23 37 23.19 - HVAC Gravity Upblast Ventilators
23 38 13 - Commercial-Kitchen Hoods
23 38 13.13 - Listed Commercial-Kitchen Hoods
23 38 13.16 - Standard Commercial-Kitchen Hoods
23 38 16 - Fume Hoods
23 40 00.00.01 - HVAC Air Cleaning Devices
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 13 - Boiler Feedwater Pumps
23 53 16 - Deaerators
23 54 13 - Electric-Resistance Furnaces
23 54 16 - Fuel-Fired Furnaces
23 54 16.13 - Gas-Fired Furnaces
23 54 16.16 - Oil-Fired Furnaces
23 55 13 - Fuel-Fired Duct Heaters
23 55 13.13 - Oil-Fired Duct Heaters
23 55 13.16 - Gas-Fired Duct Heaters
23 55 23 - Gas-Fired Radiant Heaters
23 55 33 - Fuel-Fired Unit Heaters
23 55 33.13 - Oil-Fired Unit Heaters
23 55 33.16 - Gas-Fired Unit Heaters
23 57 13 - Steam-to-Steam Heat Exchangers
23 57 16 - Steam-to-Water Heat Exchangers
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 57 33 - Direct Geoexchange Heat Exchangers
23 60 00.00.01 - Central Cooling Equipment
23 61 13 - Centrifugal Refrigerant Compressors
23 61 13.13 - Non-Condensable Gas Purge Equipment
23 61 16 - Reciprocating Refrigerant Compressors
23 61 19 - Scroll Refrigerant Compressors
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 70 00.00.01 - Central HVAC Equipment
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 73 33 - Indoor Indirect Fuel-Fired Heating and Ventilating Units
23 73 33.13 - Indoor Indirect Oil-Fired Heating and Ventilating Units
23 73 33.16 - Indoor Indirect Gas-Fired Heating and Ventilating Units
23 73 39 - Indoor, Direct Gas-Fired Heating and Ventilating Units
23 74 13 - Packaged, Outdoor, Central-Station Air-Handling Units
23 74 23 - Packaged, Outdoor, Heating-Only Makeup-Air 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 76 13 - Direct Evaporative Air Coolers
23 76 16 - Indirect Evaporative Air Coolers
23 76 19 - Combined Direct and Indirect Evaporative Air Coolers
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 81 43 - Air-Source Unitary Heat Pumps
23 81 46 - Water-Source Unitary Heat Pumps
23 82 13 - Valance Heating and Cooling Units
23 82 16 - Air Coils
23 82 19 - Fan Coil Units
23 82 23 - Unit Ventilators
23 82 26 - Induction Units
23 82 29 - Radiators
23 82 33 - Convectors
23 82 36 - Finned-Tube Radiation Heaters
23 82 39 - Unit Heaters
23 82 39.13 - Cabinet Unit Heaters
23 82 39.16 - Propeller Unit Heaters
23 82 39.19 - Wall and Ceiling Unit Heaters
23 83 13 - Radiant-Heating Electric Cables
23 83 13.16 - Radiant-Heating Electric Mats
23 83 16 - Radiant-Heating Hydronic Piping
23 83 23 - Radiant-Heating Electric Panels
23 83 33 - Electric Radiant Heaters
23 84 13 - Humidifiers
23 84 16 - Dehumidifiers
23 84 19 - Indoor Pool and Ice-Rink Dehumidification Units
Project Experience
- Non-Union
- Prevailing Wages (Davis Bacon)
- Public
- Private
- New Projects
- Alterations/Renovations
- Interior Fit-Ups
- Service Work/Repairs
- Projects Up to $1,000,000
- LEED Experience
- BIM Experience
Diversity
- Small Business Enterprise
- Veteran-Owned Small Business
- Service-Disabled Veteran-Owned Small Business
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