As an HVAC expert with years of experience, I have witnessed firsthand the significant impact that proper duct sizing can have on the efficiency and effectiveness of a heating and cooling system. While many homeowners may not realize it, the size of their ducts plays a crucial role in keeping their home comfortable and managing their electricity bills. In this article, I will explain the rule of thumb for duct sizing and why it is important to get it right. The general rule for duct sizing is that the diameter of the air conditioning duct should not be less than 125% of the width of the furnace outlet. However, this calculation can be confusing and may vary from home to home and from one HVAC system to another.
That's why I always recommend using an online calculator or consulting with an HVAC contractor to determine the best size for your home's ducts. When it comes to ventilation, every room of 100 square feet or less should have at least one ventilation hole, while larger rooms may require two or three. For example, a 12 x 12 foot room would need a 4 x 8 inch supply duct, which translates to approximately 144 CFM. However, these are just general guidelines and may not apply to every situation. One thing that's clear is that having the right size ductwork is essential for your HVAC system to work effectively. When fresh air enters a room, it expels stale air through a set of ducts.
These channels or ducts are used in heating, ventilation, and air conditioning systems to distribute fresh air and remove stale air. In order to calculate the best duct size for your home, you will need to know the square footage of each room as well as the total square footage of your house. Here in Florida, Aztil AC is always available to help with duct sizing and any other air conditioning issues you may have.
