How to Repair A/C systems

The condenser and evaporator are two independent components of central A/C systems. The condenser unit is normally installed on a concrete slab outside the home. The evaporator coil is installed above the furnace in the plenum or main duct junction.

The majority of central A/C systems are linked to the home’s forced-air distribution system. As a result, the same heating motor, blower, and ductwork are utilised to transport cold air from the air conditioning system. When the central A/C system is turned on, hot air from the home goes to the furnace via the return-air duct. The blower moves hot air through the plenum’s cooled evaporator coil, which is subsequently fed through ducts to chill the home.

The evaporator and condenser are both sealed. As a result, for nearly any maintenance other than normal cleaning, a professional service person should be summoned. Before the start of each cooling season, central A/C systems should be properly examined and adjusted. However, your upkeep should not stop with this annual examination. While you won’t be able to do many repairs yourself, there are particular maintenance routines you can follow to maintain your system running at top performance. But it is better to hire a professional like A/C system maintenance reseda

Before performing any work on an air conditioning system, make sure the power to the system is switched off, both to the condenser and to the evaporator assembly.

Let’s attempt to restrict the scope of the job before you start working.

Check out the following websites for additional articles about house repair.

  • How to Repair Window A/C systems: Window A/C systems perform the same function as central A/C systems, but the repair principles are different. Follow these steps to get your unit up and running.
  • Major Appliance Repair: If your A/C system isn’t the only problem in your home, this article will teach you how to fix other devices.
  • Repairing Small Appliances: After dealing with the a/c, a toaster or blender looks like child’s play. Learn how to repair them here.
  • Maintenance of the Thermostat: To ensure if there is an issue with your a/c, you should also check the thermostat. Discover how to calibrate a thermostat.
  • Hire, A/C system maintenance reseda. For top-notch services

Central A/C system Troubleshooting

Although central air conditioning will require expert maintenance, there are numerous small issues that you can simply address yourself. If your central A/C system isn’t operating correctly, search for the problem on this chart and determine if it’s a do-it-yourself project.

Evaporator Cleaning

In the plenum, the evaporator for the central air system is placed directly above the furnace. The evaporator may or may not be accessible, but if it is, it should be cleaned once a year. You can clean the evaporator if the plenum has foil-wrapped insulation at the front; if the plenum is a sealed sheet metal box, do not attempt to access it. The following is how to clean an accessible evaporator:

Step 1: Remove the foil-wrapped insulation in front of the plenum; it is most likely taped in place. Remove the tape with care, since you will need to replace it afterwards. The access plate is hidden under the insulation and is held in place by many screws. Remove the screws and pull the plate off.

Step 2: Using a stiff brush, clean the whole bottom of the evaporator unit. A huge hand mirror might assist you in seeing what you are doing. If you can’t reach all the way back to clean the entire region, gently slide the evaporator out. Even if the evaporator is linked to stiff pipes, it can be slid out, but be cautious not to bend the pipes.

Step 3: Clean the tray beneath the evaporator unit. This tray transports condensation away from the evaporator. To prevent fungal growth, pour 1 tablespoon of household bleach into the tray’s weep hole. Check the condensate drain and pan every other day in excessively humid conditions. If there is a lot of moisture in the pan, the weep hole from the pan to the drain line may be plugged. With a piece of wire, open the weep hole.

Step 4: Replace the unit, reattach the plate, and retape the insulation over it.

Step 5: Restart the A/C system and inspect for air leaks. Duct tape should be used to seal any leaks.

You may also need to clean the condenser to for your A/C system to work correctly. Find out how on the next page.

Condenser Cleaning

The condenser unit in most air-conditioning systems is positioned outside the home and is prone to accumulating dirt and debris from trees, lawn mowing, and airborne dust. A fan in the condenser pushes air over the condenser coil. You must clean the coil on the intake side before turning off the A/C system.

Step 1: Remove any grass, weeds, or vines that have grown around the condenser unit; they may be impeding airflow.

Step 2: Clean the condenser with a professional coil cleaner, which may be found at refrigerator supply stores. There are also instructions for usage. Flush the coil clean (do not use a hose); allow to dry.

Step 3: Remove accumulated dirt from the fins with a soft brush. To reach them, you may need to remove the protective grille. Cleaning fins with a garden hose is not recommended since water can transform dirt into mud and compress it between fins. Clean the fins thoroughly: They’re composed of thin metal that’s readily damaged. Straighten bent fins with a fin comb, which is available at most appliance parts stores.

Step 4: Make sure the concrete pad on which the condenser sits is level. Install a carpenter’s level on top of the unit, front to rear and side to side. If the pad has settled, elevate it with a pry bar or 2 x 4 and press gravel or rocks beneath the concrete to level it.

Outside condenser units should be sheltered from the elements during the fall and winter to avoid leaf obstruction and ice damage. Cover the condenser unit with a professional condenser cover or thick plastic sheeting attached with robust cable.

If you’ve cleaned everything possible and you’re still not getting cold air, the refrigerant might be the issue.

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