NASHVILLE, Tenn. Sept. 6, 2011 – Conventional wisdom suggests that an annual inspection of a homeowner’s heating, ventilation and air conditioning system is the best way to maintain the health and peak efficiency of a system.

Usually a HVAC contractor performs that maintenance in the spring, in preparation for the upcoming summer. But, what about fall maintenance for the upcoming winter months?

“When switching from cooling to heating, there are maintenance tasks in the fall can have a big...