Diagnostic completed. Found temperature drop across home an average of 12°f. Liquid pressure at condenser nearly 480psig. Condensing Coil significantly impacted from nearby dryer vent. Client approved deep coil cleaning. Disassembled condenser and cleaned coil. Found condenser fan blade cracked at rivets, this poses significant risk to condenser and should be replaced. After coil cleaning temperature drop improved to 14°. Advised client that system is aging and to improve delta further would require investment which is not worth spending on older equipment. Recommended replacing fan blade. Client states he has several Carrier condenser fan blades he could install on condenser, advised against using non-oem blade as component is model specific for CFM and condenser design. Correct requests price adjustment by management. Email provided and payment link requested. No further action necessary. Email: amitabh_prasad@verizon.net