improving your attic ventilation

Posted on: 18 August 2020

When you turn on your air conditioner, the reasonable expectation is that it blows cool air into your room. However, that reasonable expectation isn't always met. Sometimes your AC unit blows out barely-cool air or no air at all. When that action happens, you may have a simple fix, or you may have AC repair in your future.

Find out some of the reasons your AC unit may not blow out cold air and what you should do about it.

Dirty Air Filter

Central air units work by pulling air in from the outside, cooling it, and sending it through your ductwork to your rooms. To keep the unit's inner workings, and your home, clean, the appliance draws the air through a filter. Naturally, as the particles become trapped in the filter, they build up.

Because the unit relies on drawing that air through to the cooling coils, a clogged filter jams up the process. Indeed, you can end up facing the next problem, dirty evaporator coils. Before that happens, replace your air filter. Experts recommend replacement anywhere from three weeks to two months, depending on your locale and circumstances.

Dirty Evaporator Coils

The evaporator coils are located inside the house. As the air draws over them, the coils are supposed to take the heat and humidity out of it to "condition" the air for your home. If they are dirty, though, from a buildup of dust, then they can't perform their job adequately.

If an evaporator coil gets dirty enough, it can actually freeze over. When this freeze happens, you can wait for the coil to defrost. However, you need to have the underlying issue addressed by HVAC technicians.

Refrigerant Leak

The evaporator coils work by way of refrigerant located inside. The presence of refrigerant is the reason they freeze over when dirty. However, they can also develop a leak. When the refrigerant level drops too low, the problem leads to insufficient or no cooling.

The lack of cooling is one sign of a refrigerant leak. Another sign is a hissing sound when you run the AC unit. The sound is the actual refrigerant leaking out of the evaporator coils. You'll need to call for repairs. The HVAC technicians will not only refill the coils with refrigerant, they'll repair whatever holes or cracks caused the leak in the first place.

Don't suffer in the heat with insufficient cooling. If your AC unit doesn't provide cold air, and the filter is clean, call for AC repair.

When you turn on your air conditioner, the reasonable expectation is that it blows cool air into your room. However, that reasonable expectation isn't always met. Sometimes your AC unit blows out barely-cool air or no air at all. When that action happens, you may have a simple fix, or you may have AC repair in your future.

Find out some of the reasons your AC unit may not blow out cold air and what you should do about it.

Dirty Air Filter

Central air units work by pulling air in from the outside, cooling it, and sending it through your ductwork to your rooms. To keep the unit's inner workings, and your home, clean, the appliance draws the air through a filter. Naturally, as the particles become trapped in the filter, they build up.

Because the unit relies on drawing that air through to the cooling coils, a clogged filter jams up the process. Indeed, you can end up facing the next problem, dirty evaporator coils. Before that happens, replace your air filter. Experts recommend replacement anywhere from three weeks to two months, depending on your locale and circumstances.

Dirty Evaporator Coils

The evaporator coils are located inside the house. As the air draws over them, the coils are supposed to take the heat and humidity out of it to "condition" the air for your home. If they are dirty, though, from a buildup of dust, then they can't perform their job adequately.

If an evaporator coil gets dirty enough, it can actually freeze over. When this freeze happens, you can wait for the coil to defrost. However, you need to have the underlying issue addressed by HVAC technicians.

Refrigerant Leak

The evaporator coils work by way of refrigerant located inside. The presence of refrigerant is the reason they freeze over when dirty. However, they can also develop a leak. When the refrigerant level drops too low, the problem leads to insufficient or no cooling.

The lack of cooling is one sign of a refrigerant leak. Another sign is a hissing sound when you run the AC unit. The sound is the actual refrigerant leaking out of the evaporator coils. You'll need to call for repairs. The HVAC technicians will not only refill the coils with refrigerant, they'll repair whatever holes or cracks caused the leak in the first place.

Don't suffer in the heat with insufficient cooling. If your AC unit doesn't provide cold air, and the filter is clean, call for AC repair.