Lewis and Son's Air Conditioning Inc has been serving the Arizona, Phoenix, Mesa, Tempe, Chandler, Scottsdale, Gilbert metro area since 1982. Sales, Service, Repair and Installation of all Heating and Cooling Equipment are our specialties. Licensed, bonded, and insured for all Commercial and Residential Heating and Cooling systems. Call 480-832-6442. BBB and Roc complaint free since established in 1982. Family owned and operated. We take extreme pride in our work and are dedicated to our customers? satisfaction. Maintaining Older Existing Air Conditioners: Air conditioners ( older than 12-15 years ) may not be very efficient to use. However, if you choose to make your older air conditioner last requires you to perform proper operation and maintenance. Refrigerant leaks: If your air conditioner is low on refrigerant, either it was undercharged at installation, or it leaks. If it leaks, simply adding refrigerant is not a solution. A trained technician should fix any leak, test the repair, and then charge the system with the correct amount of refrigerant. Remember that the performance and efficiency of your air conditioner is greatest when the refrigerant charge exactly matches the manufacturer's specification, and is neither undercharged nor overcharged. Inadequate maintenance: If you allow filters and air conditioning coils to become dirty, the air conditioner will not work properly, and the compressor or fans are likely to fail prematurely. Electric control failure: The compressor and fan controls can wear out, especially when the air conditioner turns on and off frequently, as is common when a system is oversized. Because corrosion of wire and terminals is also a problem in many systems, electrical connections and contacts should be checked during a professional service call.