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Ensuring Proper HVAC System Performance Periodic maintenance of HVAC (Heating, Ventilation and Air-conditioning) systems can be performed by a service and maintenance company specializing in such systems. The maintenance technician can do a systems health check which involves overall physical inspection, equipment cleaning and performing preventive maintenance diagnostic tests for checking system response to prescribed settings (relative to ambient temperatures) and initiate any required corrective measures. However, equipment life may be prolonged by the owner thru the following activities. Better filters usage. High-efficiency filter that are able to utilize electrostatic charges to trap the tiniest particles (even those that can carry bacteria).
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Replacing filters at least every three months. Pet dander, though, may cause more frequent replacement. If the filter looks black and clogged, there may be need to replace it at once. Washable filters, though are available, allowing re-use and prolonging filter life, making it unnecessary to replace filters for several more months. Washable filters, however, must be checked relative to the cooling performance of the HVAC system.
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Making sure manufacturer specifications for clearance around outdoor air conditioning units and heat pumps are met for proper air circulation. Avoid putting materials near these units that could impede air flow. Prevent grass clippings during lawn-mowing from discharging into the unit. Monthly check of visible refrigeration insulation (and drainage) and repairing damaged or missing lines. The cooling performance of HVAC systems will definitely be affected by refrigerant loss. Blockage in drains impair unit performance while fan coil unit drain line leaks could damage ceilings and walls. Ascertaining outdoor air-conditioning units and heat pumps remain installed on firm and level ground or pads, with any isolation springs, anchor bolts or screws properly fastened. Air supply and return for HVAC systems are usually facilitated through duct-work. Duct-work is generally configured for a particular air circulation requirement and corresponding equipment rating. Five to seven times a day, the air goes thru the ducts, carrying dust and debris with it. The gunk could build up, threatening system efficiency. Visible clogs of dust, cobwebs, debris or noticeable particles blowing out of supply diffusers, as well as visible mold on the inside surfaces of ducts indicate there may be need for cleaning. If the area is accessible, the owner may just proceed with a vacuum cleaner and other appropriate cleaning tools, taking care not to cause the duct to rust or be damaged. However, expertise and equipment of a professional service technician may be needed for the areas beyond the owner’s reach. Vermin could also enter duct-work and the service technician can help locate and seal entry points to prevent further infestation of ducts (although pest control may be the province of other specialists). Regular equipment maintenance and keeping the duct-work clean prolongs the ability of the HVAC system to perform as intended. However, if the current performance requirement does not match what the system was originally designed for, there may be a need to upgrade the system.