Upgrading AC Efficiency

[Riley]

Upgrading your AC system can improve efficiency by installing a programmable thermostat, sealing air leaks in ductwork, upgrading to a more efficient unit, improving insulation, and scheduling regular maintenance with a licensed HVAC professional. These upgrades can help reduce energy consumption, lower utility bills, and improve overall comfort and performance.

[frank]

I think your basic advice is a little lost on a forum for professional refrigeration engineers.

Perhaps your input might be a little more appreciated on hvac.com