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The Importance of Maintaining Your Air-Conditioning System

por Seymour Crawford (2019-11-20)

Dy6rApcVsAAC5Je.jpg%5CRegular maintenance of your central air or window unit air conditioning installation is key to efficient, reliable performance over many years. Some homeowners and businesses find it easiest to hire air conditioning companies to perform all AC system maintenance, while others prefer a DIY approach. Either way, it's a good idea to have some basic knowledge about AC systems and what's required to keep them running smoothly.

Central Air DIY Maintenance

Central air condensors and evaporators are sealed and require professional air conditioning services for all but the most routine maintenance tasks, outlined below. Turn power off to both components before getting started.

Clean the evaporator. You can clean this if there is foil-wrapped insulation on front of the plenum. Remove insulation and plate. Clean the underside of evaporator and the tray with a stiff brush. Use a bleach/water mixture to clean the weep hole (aka condensate drain). Put everything back together, turn the system on, check for air leaks and repair any with duct tape.

If you cherished this article and you also would like to get more info about cleaning and painting. i implore you to visit the web-page. Maintain the condenser. Cut down any vegetation on or around the unit so there's at least two feet of clear space around it. Use a commercial coil cleaner to clean intake side of the coils. Flush the coil and let it dry. Clean fins with a soft brush, and use a fin comb to straighten any that are bent.

Level the condenser pad. Check slab twice a year. If needed, re-level with dirt or gravel underneath.

Cover condenser during fall and winter. Use a commercial cover, or alternatively, heavy plastic sheeting and a sturdy cord.

Repair coolant lines. If insulation running from the condenser to the evaporator is worn or missing, replace it according to manufacturer's instructions.
AC Window Unit Routine DIY Maintenance

Routine air conditioning service on window units mostly means removing dirt and dust. Call in a professional to repair sealed components (coil, compressor, motor). After unplugging the unit and discharing the capacitor, perform the following tasks at the start of each cooling season, and at least once a month while the unit is in service

Clean or replace the filter. Some units have washable filters; others must be replaced. Check the owner's manual for details.

Clean condenser and evaporator coils. Use a vacuum cleaner to remove dirt and dust from the coils. Use a fin comb to straighten any bent fins.

Clean drain ports. Clean the ports with a piece of sturdy metal wire or a knife blade.

Maintain the fan. Use a soft cloth and/or vacuum cleaner to remove dirt and dust. Tighten fan blades according to the instructions in the owner's manual.

Protect unit from elements during winter. Remove the unit from its window mount and put it in storage, or protect the outside with a commercial cover or heavy plastic sheeting and duct tape.
AC Window Unit Advanced DIY Maintenance

These tasks are for advanced DIYers comfortable using a volt-ohm-milliammeter (VOM). Set the VOM to RX1 scale and unplug the AC unit before getting started. Call in AC companies to test and replace thermostats with more than two connected lead wires or replace a faulty fan if it's accessible only by moving the condenser coil.

Check power cord function. Remove the control panel, unscrew cord terminals and attach a test wire to the bare lead wires. Attach VOM clips to the cord's plug prongs. If reading is higher than zero, replace the cord.

Test and replace a faulty thermostat. Remove the thermostat carefully and mark the exact location of the sensing bulb. Use VOM, clipped to terminals, to check function. If the VOM reads higher than 0, replace the thermostat.

Check for faulty fan motor. Attach the VOM clips to the motor wires disconnected from terminals. VOM readings between 3 and 30 ohms mean the motor is okay. Zero or higher than 30 means the motor needs replacing.

Replace a faulty selector switch. If the AC is plugged in and the power cord is functioning, but it won't run at any setting, it's likely that the switch is faulty. Look for burnt insulation around the switch, or burn marks on the terminals to confirm.




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