There are a lot of components that make up the central air conditioning unit, and in order to troubleshoot what is wrong with your air conditioner, you need to understand a wide variety of components that make up the system including refrigeration, electricity, electrical components, electric mechanical controls and AC(air conditioning) components. Since the system can be complex it is probably better to have a trained HVAC specialist look at and diagnose the unit rather than attempt repairs yourself, but you should also be familiar enough with your ac unit so you understand how to maintain it.
When it comes to window AC repairs, Often there will be constant and unusual noises from a window AC unit. These noises can be rather annoying, giving off a loud hum or rattling. Thankfully, many times, this is a problem that can be easily fixed, especially in cases where the noises are caused by loose parts. In this article, we will provide a few tips to help further evaluate the situation. Equipment Needed:• Fin Comb • Screwdrivers • Shims • Various Replacement Parts • Shop Vacuum • Garden Hose • Light Oil • Weather Seal • Wrenches • PuttyStep 1 - The cause of the noise may simply be caused by the unit not being positioned in the window frame properly. If it happens to be loose, the shaking of the unit may cause it to jolt against the frame. In order to check this issue, turn the unit on, press your hand against the window glass, and listen to hear if there is a difference in the noise. If you happen to notice a difference, simply place a weather seal firmly around the unit. You may also try placing shims between the unit and frame. Step 5 - Damages coil fins have also been known to cause a humming sound. To fix, remove the cooling coil housing located near the back of the unit. Clean each coil with the brush attachment of a vacuum, and carefully place the teeth of a fin comb between a set of fins that are undamaged to find the correct spacing. Next, slide the comb through the damaged fins to straighten. There are many AC repair complications that will require professional help. If you cannot fix the unit yourself contact a professional in your area.
First, let us say we have been installing furnaces since 1989 with next to NO repair problems. This includes the 92% versions. We ran a new house HVAC business for 10 years installing not only the furnace, air conditioner or heat pump but all the ductwork, wiring, in other words, a complete turnkey installation. We did this on between 150 - 200 new homes a year for this 10 year period. The size of the flue pipes ( diameter ) runs between 2" and 3". The size of the furnace and the length of the runs of pipe, as well as the number of elbows, will dictate which diameter of the pipe is needed. Here again, if the installer AND the estimator don't understand this, you can count on problems! In other words, if 3" pipe will be needed SOMEONE has to be sure there is enough clearance to allow for installation AND the 1/4" pitch.