A 5-bedroom house that is 20,000 ft cubed requires what recommended ventilation rate?

To determine the recommended ventilation rate for a 5-bedroom house with a volume of 20,000 cubic feet, you can apply the guidelines that incorporate the concept of air changes per hour (ACH) along with the ventilation requirements based on the size of the house.

The general recommendation for residential ventilation typically aims for a rate that satisfies the needs of occupants for fresh air while ensuring indoor air quality. One common approach is to calculate the necessary ventilation using the formula that considers the volume of the house and aims for a certain ACH.

For residential applications, a common target is often set at about 0.35 ACH or slightly higher for proper indoor air quality. In this case, by calculating the desired air changes, the appropriate formula would involve calculating the total volume in cubic feet multiplied by the desired air change rate, then dividing by the minutes in an hour to convert this to cubic feet per minute (cfm).

By applying this guideline, for a house of 20,000 cubic feet at the target of around 0.35 ACH, you would arrive at a value that closely approximates 117 cfm. This value takes into account the balancing of air supply needs for a living environment effectively making it suitable for the occupants.

Therefore, the