2006 5t attic horizontal hp. System down upon arrival. Frozen coils on the intake side. Refrigerant leak detection underside. Heavy rust throughout indoor unit. Refrigerant charge below manufacturer tolerance. I shared with homeowner all pertinent information and discussed age, performance, saftey and parts availability. Homeowner agreed to a CA appointment 5/26/25 @10a. System down. Slight language barrier. If possible, provide window units. I've informed homeowner the best I can that if he were to purchase window units then we would buy them back upon install. But I'm not sure he understood.