What should be done when a venting system for a gas appliance is found to be too small?

When a venting system for a gas appliance is determined to be too small, it is essential to increase the size of the vent to ensure safe and effective operation. A vent that is correctly sized is crucial for the proper exhaust of combustion gases, which helps prevent dangerous situations such as carbon monoxide buildup and ensures that the appliance operates efficiently and safely. By increasing the size of the vent, you enhance the ability of the system to handle the volume of gases produced, maintain proper draft, and reduce the chance of backdrafts that can compromise the appliance's performance and safety.

Using multiple smaller vents can create complications in balancing and may not effectively eliminate combustion gases as efficiently as a single properly sized vent. Restricting air flow to the appliance is detrimental because it can starve the appliance of the necessary air for combustion, compromising safety and efficiency. Additionally, not operating the appliance when the venting is inadequate does not resolve the underlying issue and simply delays the need for proper ventilation adjustments. Therefore, increasing the size of the vent is the most appropriate and effective solution in this situation.