Performed maintenance on Lennox air conditioner. System is operating normally at this time — refrigerant levels are good, electrical and mechanical components are functioning properly, and drain lines are clear. Advised customer to replace their air filter at least every two months, and to use a MERV 9 filter for better indoor air quality. Pets are present in the home, which increases the need for effective filtration. Recommended the PureAirX air cleaner, ideal for reducing airborne particles, allergens, and pet-related odors. We're currently offering a $200 discount on the PureAirX system, which also includes a one-year supply of media filters. An estimate will be sent separately.