Came out today for a no AC call . Upon arrival I found the Lennox system calling for ac but it is extremely hot in the home. Model #XC14-036-230-07, serial #5814L01440 . The temperature split is currently at a 1° differential. I connected my gauges and found that the system is low on refrigerant approximately 4 lbs. the Merv filter is still good for another month and the Evaporator coil’s are clean and in good condition. I explained to the homeowner my findings and presented several solutions for his system. The homeowner went with the bronze option. I charged the system with 3lbs of 410-A and the system now has a temperature split with a 19° differential. The system should run for 1-2 weeks then Chud will return to perform a leak detection. Once the leak is found we can then order the proper part and perform the repair. Fill system with refrigerant per manufacturer specs. Return to perform leak investigation Repair leak after it is located allow 3-4 hrs- labor only.