How Far Should Furnace Exhaust Be From Window. The PVC vent size is determined by Furnace size BTUHand the distance from furnace to outsideStandard is 2 or 3 but all this information comes with installation instructions. If it is a PVC vent with an adjacent air intake it can be as little as 1 from an opening.
For 70 of pipe with the same number of elbows the pipe size increases to 3. The vent terminal shall be at least 12-inches below 12-inches horizontally from or 12-inches above any door window or gravity air inlet into a building. The exhaust vent terminal shall be located at least 3-feet above any forced air inlet located within 10-feet.
Distance to a permanently closed or non-operable window.
If its over 100000 BTUhour it should be at least 3 feet away. Each vent shall terminate not less than 10 feet 3048 mm from or not less than 3 feet 914 mm above an openable window door opening air intake or vent shaft or not less than 3 feet 914 mm in every direction from a lot line alley and street excepted. How far does a furnace vent have to be from a window. Also distance from windowsDoors etc.
