Making Sure that You HVAC System Properly Sized Just as you're experiencing discomfort due to uneven temperatures, your system is constantly trying to compensate, which means sky-high bills for you and the potential for expensive repairs. Sometimes, an improperly-sized HVAC system may result in uneven heating or cooling. This could be the result of either an incorrect load calculation at the time of the system's installation or a home's heating and cooling needs changing over time. For example, It is common that an extra room is added or an area like an attic or basement is converted into living space. If your HVAC system is too small to properly heat or cool your home, uneven temperatures and system failures could result. To determine whether your HVAC system is properly sized, contact an HVAC professional for an up-to-date load calculation. Aris Parviz is a writer for Yodle, a business directory and online advertising company. Find an HVAC contractor or more HVAC contractor articles at Yodle Consumer Guide.