Ventilation
Maintaining a constant comfortable temperature in the home used to be an expensive proposition. Now with energy efficient windows and building codes that require all exterior surfaces be tightly sealed from the outdoors, indoor air quality becomes an issue.
Homes are built so tightly now that a mechanical device is required to echange the air. Bath fans and whole house fans must be on timers to properly ventilate the home.
HVAC is a complicated and integral part of your home's systems. Properly calculating, installing, balancing and maintaining ensures lifelong enjoyment.