Back drafting of Mechanical Appliances Due to Radon System

Backdrafting of combustion appliances is a dangerous occurrence that can be exacerbated when installing radon mitigation systems in homes. The risks of backdrafting can lead to carbon monoxide poisoning and pose a serious threat to the health and safety of those living in the home.

Backdrafting occurs when the pressure inside a home is lower than the pressure outside. This creates a situation where the combustion gases from an appliance, such as a gas furnace or water heater, are not properly vented to the outside of the home. Instead, these gases can be drawn back into the living space, posing a serious health risk to the occupants of the home.

When installing a radon mitigation system, it is important to consider the effects it may have on the pressure within the home. A radon mitigation system works by drawing air from the soil beneath the home and venting it to the outside. This process can create a negative pressure within the home, which can lead to backdrafting of combustion appliances.

Another important consideration is the proper sealing of the home's envelope. Sealing air leaks and ensuring proper insulation can help to maintain a healthy pressure balance within the home. This can prevent negative pressure from developing, reducing the risk of backdrafting.

It is also important to have all combustion appliances properly maintained and inspected regularly. A malfunctioning appliance can produce a dangerous level of carbon monoxide, which can quickly build up in a home with negative pressure.

Whole house fans are a common culprit of backdrafting. For example, a home we mitigated in Kent, OH didn't backdraft under normal testing circumstances however when the whole house fan was turned on, the water heater began to have extreme backdrafting. 

It is important for homeowners to understand the risks of backdrafting and take steps to prevent it. Regular maintenance and inspection of combustion appliances, proper sealing of the home's envelope, and the installation of a combustion air intake can all help to reduce the risk of backdrafting.

In conclusion, the dangers of backdrafting of combustion appliances in regards to radon mitigation cannot be understated. The risk of carbon monoxide poisoning is a serious threat to the health and safety of those living in the home.

If you or anyone you know has any questions about radon mitigation, call Harner Radon Relief at 1-330-274-2390!