A central air conditioner is a unit that spreads cold air throughout your home or business via a duct system. Within the machine itself, air is pushed through several coils containing refrigerant that cool it before its pushed through the duct work and into the home. These evaporator coils should be cleaned once a year to keep the unit working efficiently and to help avoid creating allergy problems for you and your family. Before working on any appliance or device powered by electricity, it is important to shut it off at the source. With a central air conditioner, you will want to first turn it off at the thermostat. Afterward, switch the power to the unit off at the breaker box; there should be a breaker dedicated for this purpose. If you cannot find it for some reason, it would be smart to call your electric company to have them help you. If you do not know where the main part of your unit is installed, you will want to look around for it. Generally, you can find panels that cover it outside your home of office, on the side of the building;

however, they can be located on the back of the building, on the ground near your home or office, or even on the roof. Once you have located the panels covering your air conditioner, remove them by loosening the screws. Make sure that the area around you is clean so that nothing will fall and hurt the air conditioner while you are working. After everything is unscrewed, pull the panel away, taking note of how you removed it so that you will be able to reattach it easily when you're done.what is heat pump in ac unit Locate the coils and spray them down with water from a garden hose. air handling unit qualificationUse a spray nozzle specifically so you can dislodge any loose debris easily. hvac package unit maintenanceFollow up by using a degreaser to take care of anything else.

Let it sit on the coils for over half an hour before proceeding. Once the degreaser has set on the coils, rinse a portion to make sure that it worked. If it has not fully cleaned the coils, it may need to sit a little longer. If the coils are clean, you will want to rinse them off completely with your hose nozzle. Make sure it is getting the heaviest water pressure possible so any remaining grease and grime on the coils washes away. To make sure you don’t cause yourself injury, stand at least two to three feet away the entire time. Also make sure that the nozzle is about a foot away from the coils so that the water pressure will not harm the system. Allow the coils to fully dry before reattaching the panel to the outside of the air conditioner. It is of the utmost important that no moisture remains inside. Turn the electricity to the unit back on and you're finished. By maintaining your air conditioning coils, you will make sure that your unit will work longer and more efficiently.

When you hold your hand up to a vent or feel the intake of air at your air conditioner's filter, you can feel how rapidly it circulates air through your home. Another substance, coolant, also flows through its own closed system within your air conditioner. That hidden system holds the key to how your AC unit cools your home. Air conditioners and refrigerators rely on a fundamental property of gases to cool the surrounding air. As pressure on a gas decreases, the gas expands and cools; increasing pressure makes the temperature rise. You could also express these phase changes as evaporation and condensation, which is how evaporator coils and condenser coils get their names. Refrigerants, including Freon and Puron, may never need recharging throughout the life of your AC. The coolant in the system travels through four components: The blower moves warm indoor air over the chilled evaporator apparatus as the exterior exhaust fan moves hot air away from the heated condenser coils.

All air conditioning systems, including window units, heat pumps and ductless units, operate on the same principle. They differ only in the size and configuration of the coils. You might think of your air conditioner as adding cool air to your home, but it's more accurate to say that your AC unit subtracts heat from indoor air and transfers it outside. That transfer takes place in the evaporator coils on the interior half of your air conditioning system. As the coolant inside the metal coils evaporates, it acts as a heat sink for the air that moves across it from the blower. Copper conducts heat readily, so the coils that contain the coolant are usually made of this metal. To maximize surface area and provide more cooling power, the copper coils have metal fins or vanes surrounding them. In a dual or hybrid heat pump system, the same coils that act as evaporation sites in the summer to cool your home become condensation sites in the winter to provide warmth. Keeping the coils clean is vital to proper heat exchange.

When dust and debris collect on coils, the particles form an insulating layer that prevents warm household air from the blower from reaching the chilled metal. If you smoke or cook frequently, you may need additional cleaning power for dirty coils. Investing in quality air filters may save you challenging cleaning jobs in the future. Just as a glass of iced lemonade develops beads of condensation on a hot, humid day, evaporation coils can collect droplets of water. Cooled, conditioned air can hold less water vapor, so the remaining water condenses on the coil's surfaces. Drain pans normally collect the condensation and move it outside your home, but a clogged drain can cause water leaks. Interior coils can also freeze up if they become too cold; it may seem strange that ice makes your air conditioner less efficient, but iced coils cannot transfer heat effectively and should be allowed to thaw before turning the unit on again. During routine seasonal maintenance, your AC service cleans the interior coils for you, but if you notice reduced cooling capacity, check the coils for signs of dirt or ice.

A brush and a commercial coil cleaning spray can remove the worst of the soil, but turn off the power to the unit before attempting to clean the coils. If you feel unsure about working with your AC unit's coils, call a professional instead of trying to do the work yourself and risking damage to delicate metal vanes. Your air conditioner's condenser apparatus is outside where waste heat can dissipate to the outdoor air as the heated gas inside it returns to its liquid state under pressure. Like the interior coils, the exterior coils are a heat transfer site; in this case, though, the heat moves in the opposite direction, going from the coolant into the surrounding air with the help of exhaust fans. Like evaporator arrays, condenser arrays typically contain copper or other metals that easily transfer heat. Their vanes are built into the exterior unit to facilitate cooling. Your air conditioner runs more efficiently when excess heat leaves the system quickly, so keeping the coils clean can lower your utility bills and lengthen the lifespan of your system.