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What is a Mechanical Contractor

Mechanical Contractors install, service and retrofit mechanical systems in buildings. Mechanical contractors specialize in plumbing, heating, ventilation, air conditioning, sprinkler systems, fire protection, control systems, refrigeration, insulation, specialized process systems, medical gases, hydronics, site services and welding. Installations, service, and retrofitting are performed in both the Industrial, Commercial and Institutional (ICI) and residential sectors. Mechanical contractors are also responsible for ongoing maintenance of the mechanical systems. A mechanical contractor may also take on the responsibilities of a prime contractor in a construction project.

Air Conditioning

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Air conditioning systems provide cooling or humidity control for residential, commercial, or industrial buildings to maintain constant indoor temperature conditions.
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Boiler Installation

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The installation of boiler systems which heat fluids including water heating and central heating for cooking and sanitation in commercial, industrial, and residential buildings.
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Chilled Water Piping

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Systems of pipes and pumps which distribute chilled water throughout buildings.
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Control Systems

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A control system manages, commands, directs, or regulates the behavior of other devices for heating and cooling a building using control loops.
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Design-Assist & Design-Build

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Design-Assist involves a construction contract which is awarded to a contractor who provides design assistance to the architect or engineer of record. Design-Build is a method to deliver a project where the design and construction services are contracted by a single entity known as the design–builder or design–build contractor.
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District Energy Heating & Cooling

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District energy systems use a central thermal grid to provide efficient heating, cooling, and hot water to a group of buildings.
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Fire Protection

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Systems including smoke detectors and sprinkler systems that help with fire detection and protecting buildings from fires.
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Geothermal Heating

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The use of renewable geothermal energy sourced from below the surface of the Earth for heating applications in buildings.
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Heating

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Heating systems generate heat and warmth in buildings via conduction, convection, radiation or a combination of the three.
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Hydronics

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Commercial and industrial heating and cooling systems which use liquid water, steam, or a water solution as a heat transfer solution.
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Insulation

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Involves insulating all thermal, acoustical, and personnel safety requirements in mechanical piping and equipment, HVAC, and refrigeration applications.
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Mechanical Install & Refits

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The installation of mechanical systems including heating, ventilation, air conditioning, and plumbing into new buildings, building expansions, or refitting these systems in existing or historical buildings.
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Medical Gases

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Medical gas supply systems are required in hospitals and other healthcare facilities for the supply of specialized gases and gas mixtures, including oxygen and anaesthetic gas.
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Pipe Fabrication

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A critical activity on any construction project where piping networks are required, involving the storage, handling, cutting, welding, inspection, testing, insulation, and installation of pipes.
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Pipe Fitting

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The process of installing, assembling, fabricating, fitting, and repairing mechanical piping systems.
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Plumbing

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A multifaceted trade which involves any system that transports fluids for a wide range of applications in commercial, industrial, and residential buildings. Heating and cooling, waste removal, and water delivery are the most common uses of plumbing.
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Radiant Heating

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Radiant heating involves the transfer or exchange of heat directly to the floor or to panels in the walls or ceilings of a building. The systems depend largely on radiant heat transfer.
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Refrigeration

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The artificial cooling of a space or system to lower and maintain its temperature below the natural one for commercial, industrial, or residential applications.
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Re-Piping

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Re-piping involves replacing damaged, old, defective, or leaking pipes in a building, oil or gas well, or centrifuge.
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Service & Maintenance

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The servicing and maintenance of mechanical systems – including plumbing, cooling, and heating systems – in commercial, residential, industrial buildings.
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Solar Heating

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A renewable energy system which collects energy from sunlight to heat water or air in buildings.
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Steam Fitting

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A multifaceted trade, steamfitting involves the assembly, installation, maintenance, and repair of pipes which transport steam, chemicals, or compressed air, liquids, or fuel into buildings.
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Ventilation

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One of the most important factors for maintaining acceptable indoor air quality in buildings, ventilation is the process of moving outside air into any indoor space.
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Welding

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Welding is most widely used in fabrication. It is the process of joining materials, usually metals or thermoplastics, by the application of extreme heat, which causes the materials to fuse once they cool.
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Where do Mechanical
Contractors Work?

Mechanical Contractors offer their services in the industrial, commercial, institutional, and residential sectors. 

From high-rises to hospitals to homes and everything in between, mechanical contractors are important contributors to construction projects, leading various sub-trades through diverse and complex installations, from the conceptual stage of a building through to when the doors open and beyond.

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Search our member directory to connect with trained and qualified professionals in the mechanical contracting industry, in addition to their suppliers and affiliated trades.

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