One symptom of a blocked air filter is that the furnace stops operating. Furnaces have an over-limit cutoff switch that stops operation if the temperature in the heat exchanger becomes too high. As a result, according to the Family Handyman, the home may remain below the thermostat setting.Continue Reading
The clogged filter causes the system to operate at a lower efficiency. If the unit continues to operate with a dirty filter for an entire month, the home occupant often sees an increase in the utility bills. Replacing inexpensive disposable filters on a monthly basis reduces the cost of operation.
When the HVAC system operates in the cooling mode, the lack of air flow caused by a dirty filter does not allow the cooling to transfer from the coils. As moisture from inside the home passes over the cold coils, it normally condenses and drips to a tray where it drains away. However, the super-cooled coils and the blocked air flow cause the moisture to freeze. In some cases, the ice blocks all air flow through the unit, causing a warmer than normal temperature in the home.
Clogged furnace filters allow a toxic buildup of carbon monoxide in the homes they serve. Carbon monoxide is a colorless, odorless, tasteless and deadly gas. Unfortunately, this is a symptom of a blocked air filter that home occupants usually do not discover until it is too late.Learn more about Car Parts & Maintenance
To replace the air filter in your car, lift the lid from the air cleaner, and pull the air filter out. Put a new air filter where the old one was, and secure the lid back into place.Full Answer >
A tune-up on cars made before about 1990 consists of contact point, air filter and spark plug replacement, and the adjustment of igniting timing, carburetor and fuel mixture. A tune-up for cars made since 1990 involves spark plug and air filter replacement. Tune-up intervals are considerably longer for newer cars.Full Answer >
The tools needed to change a car’s air filter include a set of screwdrivers, an adjustable wrench, pliers and the replacement air filter. Additional tools needed for safety are protective glasses, gloves, clean rags and a flashlight.Full Answer >
A complete car tune-up includes spark plug replacement, rotor replacement, fuel injector cleaning, a new air filter, a new fuel filter, a new PCV valve and checks on various systems, including fluid levels, ignition, emissions, manifold intake, compression, timing, idle, distributor cap, battery, choke, vehicle computer, belts and safety. Anything that shows wear and tear should be replaced during a tune-up.Full Answer >