Performed Super Tune up on Downstairs unit Delta in cooling was 28 degrees meaning there was an issue Condenser was recently changed to 410a but the evaporator is r22 Metering device was not changed when this happened Coil was filled with bio growth and dust and debris, recommended a cut and along with a new TXV Customer has a transfer switch, units outside do not have a soft start that is meant to go along with a generator, they are attached on the estimates In heating mode, no CO detection whatsoever or gas leaks and had a 50 degree delta in heating Customer was made aware of the situation, and would like to arrange this for late February or early March Setting a follow up for those days Thank you for choosing Comfort Experts, have a great day