Arrived on site read a customer. Customer let me to two thermostats one downstairs and one upstairs. Set both thermostats to cooling. Went to the basement with air handler is change the filter. Checking temperature split between the return and supply and feedback 30° but also get bouncing back to 23°. Condenser was pretty clogged up, sprayed down with chemical and water left it like new. A customer the status of the unit and customer acknowledge and also signed off.
