Chiller
A machine that cools a secondary fluid (typically chilled water) to air-condition large spaces via coils or heat exchangers.
Technical Glossary
Definitions of common terms in combustion, boilers, HVAC, ventilation and mechanical plumbing.
The technical vocabulary of heating, combustion and HVAC systems can be complex. This glossary gathers the essential terms you will encounter during diagnostics, quotes or intervention reports on your mechanical equipment.
Each definition is written for building managers, maintenance directors and technical decision-makers who want to understand the issues without necessarily mastering the specialized jargon. Terms cover natural gas combustion, hot water and steam boilers, commercial air conditioning, ventilation and mechanical plumbing.
Combustion
An oxidizing chemical reaction of fuel that releases heat; its tuning determines safety, efficiency and emissions quality.
Combustion Analysis
Measurement of flue gases and flame-related parameters to evaluate burner tuning and combustion quality in operation.
ÉcoPerformance
A Québec program for evaluating and labeling energy performance in commercial and institutional buildings, following published rules.
Gas Burner
A device that mixes combustible gas with air to produce a controlled flame feeding a generator or boiler.
Heat Pump
Equipment that moves heat between an external source and the building to provide heating and cooling based on cycle and regulation.
Hot Water Boiler
A generator that heats water for a heating network or domestic hot water needs, often configured in cascade on demanding sites.
HRV
A device that transfers part of the energy from exhaust air to incoming fresh air to reduce heating or cooling loads.
Preventive Maintenance
A structured program of inspections, cleaning and planned replacements to reduce failures and drift before they impact operations.
Rooftop (RTU)
A rooftop air handling unit that typically combines heating, cooling and ventilation for commercial or institutional zones.
Steam Boiler
A unit that generates pressurized steam for heating, sterilizing or driving industrial and institutional equipment.
Water Treatment
A set of chemical and mechanical methods to control hardness, corrosion and biological growth in the hydraulic circuits of thermal equipment.
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