Air flow is the lifeblood of heat and many functionality, energy efficiency as well as indoor air quality issues are either the cause or consequence of incorrect air flow. Proper air flow results from a correct match between the output of the furnace blower and the dimensions and design of ductwork that disperses heat throughout the home.
A Question of Balance
Forced-air central heating systems are closed-loop designs incorporating independent supply and return ductwork into recirculate air. The distribution half of the machine communicates heated air from the furnace through ductwork into individual rooms. Simultaneously, the machine pulls air out of every room to the return ductwork and communicates it back to the furnace for reheating. Equivalent quantities of supply air and return air produce impartial atmosphere pressure in chambers. This means the machine is”balanced,” the best condition for heat.
Not Too Much, Not Too Little
The use of industry-standard load calculation software decides the BTUs of heat energy the system must deliver to every space to maintain a comfortable temperature. This data is then utilized to compute the cubic feet-per-minute of blower air output in addition to the best diameter of ductwork into recirculate that atmosphere volume economically. When imbalances are supposed, a manometer can spot quantity at each supply register in addition to the air flow through the return duct. Nice tune air flow in and out of every room by adjusting dampers inside the ducts until the space is balanced and neutral atmosphere pressure revived.