Sunday, 19 November 2017

NOISY AC? KNOW THE REASONS AND HOW TO REPAIR

Thanks to their inbuilt sound dampening technology, the new generation of ACs is usually quieter than their predecessors. Yet, often the users complain that their units are making noise, especially when they are working too hard. For instance, In warm areas like Tampa, the AC repair experts find that in most of the cases, ACs make noise as a result of running long hours at a stretch. Working continuously in hot and humid weather makes them exhausted. Whatever may be the reason behind the noise, it is annoying. Also, an unusual sound is the indication that your AC is not in perfect health. So, you need to fix the problem as soon as possible. Below are some remedies that you can take to resolve the noise issues.


Know What Causes Noise
The type of sound coming from AC gives an idea of its possible reasons. The squeaking sound usually comes from the fan motors that have lost their balance due to the accumulation of dirt.  The fan is located in front of the coils. So, just by removing the outer casing, you can check whether it is making noise or not. The loose parts of AC unit cause rattling sound. To find out if it is your problem, turn off the unit, disconnect it and check all the panels.

Sometimes ACs make grinding and hissing sounds. The grinding sound occurs due to faulty bearing whereas the leakage in coolant results in a hissing sound. Both the sounds indicate severe issues with your AC unit that calls for your immediate attention.

Remedies for a Noisy AC

Check the Insulation
Sound-eliminating insulation is placed in most of the ACs between their walls and the faceplate. If any part of it is worn-out, torn or missing, consider replacing it with a moisture-resistant material. This type of insulation helps cut down the sound created by moving elements of the AC. If the unit has a large open grid in its faceplate, add some padding to reduce the amount of air-intake, which in turn, reduces the vibration. While doing this, make sure that the case in which the AC is housed, and the faceplate fit one another perfectly, so that there is  no air gap between them.


Noise Blanket
Using a noise blanket is the easiest way to deal with sound, although the efficacy of this trick depends on how you use the blanket. Simply wrapping the unit with a cover will not work in this case. Instead, you should be ready to go through a trial and error process to find out the source.
For instance, to cover the compressor, you have to disassemble the AC parts first. Then keeping the fan on the top, wrap the blanket around the compressor and secure it with a fastener. You can tape other openings to lower the noise further. Remember that the sound blanket does not eliminate the noise, only reduces it. Moreover, this solution does not work for small units. In case, you are not familiar with the AC parts, take help from the technicians.

Create a Fence
A mass loaded vinyl (MLV) barrier between the AC unit and the target is another option to reduce the noise. To do this, first determine the direction of the sound path. Next, build a fence, which is at least eight feet high and six feet wide. Install it as close to the unit as  possible. Then, line up the fence with one-inch thick sound absorbent closed cell foam. If you feel that the sound is going upward, use an overhang to block its way. Sometimes the sound propagates through multiple paths. In these cases, consider installing a ‘V’ shaped or ‘U’ shaped fence. Sometimes you may need a boxed-in area for suppressing the sound. Seek help from experts to plan the ventilation and access doors in this case.


Replace the Power Cord
A worn-out, twisted or torn power cord can make your AC noisy. When the wiring is not in the right condition, the power supply will not be steady, resulting in intermittent stoppages that create vibrating sound every time the unit restarts. Replacing the cord with the help of a technician is the best solution in this case.
If your AC is making a weird noise, contact your nearest AC repairing center in Tampa without any delay.  Strange sound being one of the signs of poor health, you should not waste time talking to an expert.

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