12-17-2023, 06:37 PM
Downdraft just doesn't work. Designers love it for the look but is just doesn't pull anything but light smoke.
You do not want a horizontal exhaust vent as the grease will just coat it and lie there. So that leaves vertical. If you are going to do the furnace first then there should be no issue with using the existing chimney. That will likely be just running an exhaust pipe up it to the top, so no new liner would be needed.
Whatever you do, you want the line to be as short as possible avoiding bends or other restrictions. In the meantime either move the detector or put a switch on it (with a big reminder to turn it back on).
You do not want a horizontal exhaust vent as the grease will just coat it and lie there. So that leaves vertical. If you are going to do the furnace first then there should be no issue with using the existing chimney. That will likely be just running an exhaust pipe up it to the top, so no new liner would be needed.
Whatever you do, you want the line to be as short as possible avoiding bends or other restrictions. In the meantime either move the detector or put a switch on it (with a big reminder to turn it back on).