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Specialists in the manufacture of heating,
ventilation, air conditioning (HVAC) ductwork and other sheet metal
products.
Candair Eng Co Ltd was established in February 1965.
Originally, the company designed, manufactured, installed and
serviced warm air heating systems. More recently the company has
diversified and consolidated into mainly manufacturing ductwork
systems and gas flue collector boxes and other sheet metal products.
We specialise in the manufacture of ductwork components, filter
frames, fan housing units, dampers and grille linear, side and top
entry plenums, and pan adapter boxes for the HVAC industry.
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Product Range:
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Square and Rectangular
Ducting |
Vertical or Flat Tee or Y
Branch |
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Flanged Sleeves |
Enclosed Box |
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Bird Mesh Cowls |
Filter frames and housing
boxes |
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Damper Blade |
Square to Rounds
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Plate spigots |
Canopies / Extract boxes |
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Transitions and
Reducers |
Offset Ducts or Reducers |
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Grille Adapter Box to
Spiral |
Flat 90° Air Turn Bends or
Radial bends |
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135°/45° Bend |
Vertical Bend |
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Linear plenums |
Air Flow
Extractor / Heating / Ventilation |
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Brackets, collars, blank
plates |
Register Grilles |
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Heat recovery systems |
Chimney gas flue collector
boxes |
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Side and Top Entry Plenums |
Pan Adapters
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Ducting is manufactured from 0.8mm to
1.2mm galvanised steel with a Pittsburgh lockform, buttonlock,
crimped, internal capped or a spotwelded construction. Generally,
the materials we use are light gauge 0.56mm to 3mm galvanised steel,
aluzinc, zintec, aluminium and "316" or "304" stainless steel.
If you have different specifications, then we would gladly source
items specific to your needs.

Quality Assurance
Ducting will conform on in accordance with specifications for
sheetmetal ductwork under DW 144 Low, medium and high
pressure/velocity air systems 1998 and DW 145 the Guide to good
practice for the installation of fire and smoke dampers (revised
June 2010).
Our fire rated type grille boxes are manufactured from 1.6mm
galvanised steel to satisfy BS 476: Fire Tests on building materials
and structures: Part 24 (1987) Method for determination of the fire
resistance of ventilation ducts and ISO 6944 (1985) Fire resistance
tests – Ventilation ducts. From 1 July 2011, these regulations will
be replaced by BS EN 12101 Part Construction Standards.
Flue gas collector boxes are manufactured in accordance with BS5258
(part 5). We make them from galvanised steel, aluminium and
stainless steel. |