HVAC

• Heat, ventilation and Air-conditioning

• Heating, ventilation and air-conditioning

• Heating, ventilating and air-conditioned

HVAC ductwork can also act as a “SPEAKING TUBE”

• False

• True

when operating heating and air-conditioning equipment, a good guideline is “LOWER AND SLOWER”

• Noise from central equipment

• Noise in air-ducts system

• Noise control

Sheet metal ductwork without installation can produce POPPING AND BANGING NOISES due to expansion and contraction caused by changes in air temperature

• True

• False

Heating, ventilating and air-conditioning ductwork can be a source of noise as well as a transmitter of it

• Noise from central equipment

• Noise from air-ducts system

Designed for installation inside sheet metal ductwork to ATTENUATE AIR RUSH and CENTRAL EQUIPMENT

• Fiber glass duct liner

• Fiber glass duct board

• Fiber glass duct wraps

Combining acoustical/thermal insulation with a REINFORCED FOIL-KRAFT AIR BARRIER/VAPOR RETARDER

• Fiber glass duct board

• Fiber glass duct wraps

Used as thermal insulation on exterior of sheet metal ducts, provide little acoustical benefit except by MUFFLING the popping and banging noises

• Fiber glass duct wraps

• Fiber glass duct spiral

Is a TYPE OF FIBER reinforced plastic where the reinforcement fiber

• Fiber glass

• Fiber glass spiral

• Fiber glass duct liner

• Thermal insulator

Is DESIGNED FOR SHEET METAL DUCTS in air conditioning,heating and ventilating systems.

• Fiberglass duct wraps

• Fiberglass duct liner