The efficiency of air conditioning systems—that is, how well they transform electrical power into cooling power—has improved in huge leaps over the last twenty years. The change in efficiency from ACs in the ’70s and ‘80s to today’s special high efficiency models can be almost double. Even standard mid-efficiency air conditioners are far more efficient than the models of the past.
If you are planning to call an HVAC contractor in Delaware to install a new central air conditioning system for your home, we recommend looking into a high-efficiency unit. They cost more than mid-efficiency units, but if you have professionals to help you choose the right unit and install it, you’ll receive a return on your investment that will pay back the extra installation costs in a few years.