Goodman Furnace: Upflow vertical – drain exiting right side
Upflow vertical - drain exiting right side on a Goodman furnace: This is the hose and fitting job for sending the condensate drain out the right side of an upflow furnace. It looks fussy but it is just four connections. The things people miss are the hose cut line and the clamp sizes, and a loose clamp will drip. Take your time, check it fits, and then test with water before you close it up.
Applies to: Upflow vertical, right side drain
Common causes of upflow vertical - drain exiting right side
- Furnace installed with the drain on the right side
- Hose cut at the wrong line
- Clamps loose or the wrong size, causing drips
- Fitting installed with the barb end the wrong way
How to fix upflow vertical - drain exiting right side: step by step
- Install the 45 degree pipe/hose drain coupling from outside the cabinet through the right side hole, barb end inside. Secure with two #8 self-tapping screws.
- Cut long drain hose #3 at line A.
- Connect the large end of hose #3 to the trap outlet with a 1.25 in clamp.
- Connect the small end of hose #3 to the 45 degree elbow with a 1 in clamp.
- Connect the field drain to the furnace trap outlet per the field drain section.
- Pour water through the trap and check for leaks at every clamp.
- Make sure the hose has no kinks or low spots.
If the unit shows an error code, look it up: Goodman Furnace codes
Source: Goodman GMVC96 service manual, p. 20. Written in our own words as a summary; always check the original manual.
General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.