Completed with heat 1 on a 2005 trane gas horizontal in attic 5 ton, found unit not heating due to a gas valve not opening, flame sensor, ignitor and inducer showing wear. Evaporator coil is very rusted with oil stains. Giving customer the option to do all preventative repairs, minimum repairs, furnace upgrade or complete unit upgrade. Customer got approved for financing but she unable to make a decision untill talking with son. Will call customer later.