Having a professional service your air conditioning system at least once a year is typically advised. This maintenance should involve cleaning, checking/replacing filters, lubricating moving parts, inspecting electrical connections, and testing system performance. If you require heating or cooling system servicing, contact Graham Heating & Air Conditioning, a fully bonded, certified, insured, licensed, and registered company. You won't regret making the call! Visit us at http://grahamac.com/