Most likely, your furnace is making a clicking noise and not providing heat because your furnace’s spark igniter is trying to ignite your pilot light or burners but is failing to do so. In other words, there’s an ignition system malfunction that needs to be fixed. Otherwise, your furnace won’t start.

The three most common causes of a clicking noise from the dashboard are: Heater control module lost calibration. Faulty blend door stepper motor.

The ticking sound is the stepper motor trying to move the blend door into the open position, it just keeps trying to complete the asked for setting. If you would include make model and year when asking automotive questions you would get better and more complete answers.

Clicking If you hear the clicking coming from outside your house, it’s a problem with the outside compressor. It’s probably something as simple as a loose part like a bolt or refrigerant tubing. But a loud clicking could mean a dying capacitor, a very important component of your HVAC.

A repetitive ticking or clicking sound coming from walls and ceilings can result from the expansion and contraction of metal HVAC ductwork that conducts ventilation through these voids. This sound can be conducted along the copper pipes that run up and out through walls.

CHECK DAMPERS AND ACTUATOR Dampers can either be open or closed. Check the dampers on the supply side of your ductwork and try opening them up one at a time to see if this reduces the popping and banging noises. You can also adjust the actuator inside of the duct dampers up or down to reduce the duct noises.

The duct silencers are designed mainly to attenuate noises in ventilation ducting. In most cases, they are mounted between the fan and the diffusing or exhaust fan and before the air diffusers. Duct silencers should be installed behind fans, flow regulators.

A sound attenuator, or duct silencer, sound trap, or muffler, is a noise control acoustical treatment of Heating Ventilating and Air-Conditioning (HVAC) ductwork designed to reduce transmission of noise through the ductwork, either from equipment into occupied spaces in a building, or between occupied spaces.

Backdraft dampers allow air to efficiently flow through exhaust ducts to the outside, yet prevent the unwanted flow of air into a house when the exhaust fans are off. These dampers are most often used in bathroom exhaust systems, clothes dryer vents, kitchen range hoods and microwaves.

Common signs of backdraft include a sudden inrush of air upon an opening into a compartment being created, lack of visible signs of flame (fire above its upper flammability limit), “pulsing” smoke plumes from openings and auto-ignition of hot gases at openings where they mix with oxygen in the surrounding air.

Why Do I Need a Backdraft Damper? A backdraft damper is beneficial if you are looking to control and enhance the air quality of your home or office. Installing a damper keeps temperature-controlled or purified air within your space while simultaneously keeping outside air from coming in.

Exhaust Damper Products. The damper regulates your car engine’s temperature, making it very essential for long drives. It also controls the speed of the exhaust gushing from the engine and keeps a small back pressure to improve its performance.

Pressure relief dampers are backdraft air dampers with an adjustable start-open pressure. This provides the capability of maintaining a relative constant pressure at various airflows. The damper closes when there is a decrease in differential pressure. This damper is generally used as a safety or controlling device.

Non return/pressure relief dampers are designed to be used in commercial and residential air conditioning systems for the intake and discharge of air. They prevent unwanted airflow against the intended direction of the airflow when the system is not functioning.

Non-return dampers open and close automatically. When the system is in operation, the blades open when air flows. When the system is shut down, the blades close due to their weight. They safely prevent air from flowing against the intended airflow direction.

The main purpose of a fire damper is to prevent flame from crossing a fire barrier. Fire dampers respond to heat, when the temperature reaches a set point the damper slams shut. Smoke dampers. Smoke dampers respond to the detection of smoke, and close automatically. They can also be activated remotely.