Furnace Intake And Exhaust Cover

High efficiency furnaces.

Furnace intake and exhaust cover.

These pvc pipes are connected to the furnace and expelled outside. Many vent screens caps covers and grilles made with a plastic or pvc mesh are unsafe for use on horizontally vented furnaces hot water heaters and boilers. The pvc sticks out of the side of the house and the guy who installed the furnace said not to put any screening over the pipe because in very cold weather northern illinois condensation could collect on the screen freeze and seal off the inlet or outlet. Where problems arise is when a diy er installed furnace or hot water heater exceeds the manufacturers limit on the length of pvc pipe used for venting.

These furnaces are also known as 90 percent furnaces because they have an afue rating of 90. Cvent 3 is for use with 3 in. This high efficiency venting system must be installed when you install the new furnace. Pvc floor drain covers are another improper accessory.

Blocking the fresh air intake in a small or restricted space containing a furnace can lead to negative pressure and can cause a back draft of toxic fumes and carbon monoxide to flow back down the flue vent. A nondirect vent system requires one pipe and a direct vent system requires two one to take in the air and the other as an. High efficiency furnaces require 2 to 3 inch diameter vent pipes. Providing the length of your pvc intake and or exhaust pipes are within manufacturer specifications accounting for length deductions for the use of elbows then you should be fine.

Otherwise wasps might nest in there. I cover both the furnace exhaust and air intake with aluminum foil in the summer. The concentric vent allows both the intake for combustion air and the exhaust vent to pass through a standard roof or sidewall. I recently had a high energy furnace installed with pvc pipe for the air intake and heat exhaust.

These also are inappropriate for covering a furnace vent because they greatly reduce airflow. Get it as soon as sat sep 19. Learn why consumers are being warned to avoid these products and what options are available. I turn off the electricity to the furnace and post a big note over the switch to remind me to remove the foil before turning on the furnace.

To be safe make sure any screen you buy is designed specifically for furnace exhaust intake vents and follow the manufacturer s instructions for installation. Other aspects of high efficiency furnace venting. Raven r1508 2 inch pvc termination vent with stainless steel screen 2 4 7 out of 5 stars 1 207. The pvc pipes are used for air intake exhaust gas and to remove the corrosive condensation resulting from the combustion process.