As equipment and houses become more complex, contractors are using Manual J in greater numbers. The air handler and ducts should be located in conditioned spaces. Use exhaust fans in the bath and kitchen areas. Programmable thermostats should be used. To diminish the heat caused by concrete, ground cover should be planted near the home.
Shade trees are an excellent way to protect the home from the direct sun.
If you do not recall the answer, refer back to the text to locate it. Most Americans tend to undersize their HVAC equipment in an effort to save money. It is better to oversize the system rather than risk a humid house. Oversized systems may lead to higher installation costs and higher operating costs. A system that is too large will run a shorter time and leave excess humidity in the air.