The possible fixes to backdraft problems have been listed below:
Install gas water heater properly
Your gas water heater is suspect number one. Consumers need to be worried about fuel-fired water heaters. They should not be installed in a room used as a storage closet. Water heaters located in a bedroom or bathroom need to be installed in a sealed enclosure so that combustion air is not taken from the living space.
Do not seal your home too tight
Today’s homes are sealed up quite nicely, keeping the warm air inside when it’s cold out, or the cool air inside when it’s hot out. We all love to save money on our heating and air conditioning bills, but too much of a good thing can turn bad. Tightly sealed houses can severely exacerbate pre-existing backdrafting issues. No one wants that. And most certainly, not your wallet.
Vent your high efficiency furnace
When replacing your older furnace for a newer high-efficiency model, you will have to convert and change the venting system. If it is not installed properly, or if the venting system has not been adapted to the new model, you might experience backdrafting. A proper, qualified heating technician should know how to convert and adapt, and properly install the venting for your new furnace.
Orphaned water heater
When replacing your old furnace with a higher efficiency one, you have to be careful not to leave the water heater using the chimney all by itself. That’s what is called an orphaned water heater. Orphan water heater-related backdrafting occurs when the draft temperature is so low in the water heater that it often can’t overcome the slug of cold air inside the chimney, and the flue gases can't escape so they come back into the CAZ (combustion appliance zone). When replacing your furnace with a higher efficient model, makes sure to ask your technician about flue gases from your gas water heater. A reliable company will be able to reroute your gas water heater flue as well to avoid backdrafting
Use exhaust fans
If you have all your windows closed and shut tight, your home becomes completely sealed – except for your chimney. If the water heater comes on, the replacement air will come from the easiest and closest hole in the building, which is usually the chimney.
All of this causes the efficiency of the system to go down. Gas water heater vent issues need to be attended by a professional technician. If you are facing problems you know you cannot solve, contact a professional today who will fix it for you.