Goodman Furnace: Upflow vertical install – drain exit side
Upflow vertical install - drain exit side on a Goodman furnace: Upflow GMVC96 family furnace standing vertical. Leave the condensate trap and hoses the way the factory ran them. Drain can come out left or right. Don't let it hold water.
Applies to: Upflow furnace installed vertically
Common causes of upflow vertical install - drain exit side
- Not a fault call. Setup notes for the drain exit on a vertical upflow.
How to fix upflow vertical install - drain exit side: step by step
- Leave the trap and factory hoses as shipped, no re-routing.
- Pick right or left side. Both sides have two 0.875 in holes, usable for drain or low voltage wiring.
- Need the exit higher? Add a 0.875 in hole in the marked cutout area.
- Seal whatever cabinet opening you don't use, so no air leaks in or out.
- Run the drain hose with a steady fall. No sags, no low spots holding water.
- After hookup, run a heat cycle and look for drips at the hose connections.
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.