Trane Xl80 Gas Furnace, Flashing Fast: Another normal operational state, but this time with a call for heat.
![The installer wrote 20x25x1 on the filter tray and the manual states to use that as well. The manual doesn't mention anything about 5 inch filters, but that tray is 5 inches deep and one would fit without issue. Is there any reason I couldn't use a 20x25x5 filter ... The installer wrote 20x25x1 on the filter tray and the manual states to use that as well. The manual doesn't mention anything about 5 inch filters, but that tray is 5 inches deep and one would fit without issue. Is there any reason I couldn't use a 20x25x5 filter ...](https://i.redd.it/the-installer-wrote-20x25x1-on-the-filter-tray-and-the-v0-12uu50d7klha1.jpg?width=1908&format=pjpg&auto=webp&s=b2413c3abb40918a73ad7cb0763e32e4738000ca)
The installer wrote 20x25x1 on the filter tray and the manual states to use that as well. The manual doesn't mention anything about 5 inch filters, but that tray is 5 inches deep and one would fit without issue. Is there any reason I couldn't use a 20x25x5 filter ...
TDH1C085A9481C - Trane / American Standard Gas Furnace 80,000 BTU Downflow 95% Efficient - North America HVAC
![140,000 BTU PSC FOUR-SPEED DOWNFLOW/HORIZONTAL NATURAL GAS FURNACE, 80% 115/60/1 CFM:2000 | Surplus City Liquidators 140,000 BTU PSC FOUR-SPEED DOWNFLOW/HORIZONTAL NATURAL GAS FURNACE, 80% 115/60/1 CFM:2000 | Surplus City Liquidators](https://surpluscityliquidators.com/product_image/asp_scl/1200x0/341747.jpg)
140,000 BTU PSC FOUR-SPEED DOWNFLOW/HORIZONTAL NATURAL GAS FURNACE, 80% 115/60/1 CFM:2000 | Surplus City Liquidators
![60,000 BTU PSC FOUR-SPEED DOWNFLOW/HORIZONTAL DIRECT VENT NATURAL GAS FURNACE, 95% 115/60/1 CFM:1400 | Surplus City Liquidators 60,000 BTU PSC FOUR-SPEED DOWNFLOW/HORIZONTAL DIRECT VENT NATURAL GAS FURNACE, 95% 115/60/1 CFM:1400 | Surplus City Liquidators](https://surpluscityliquidators.com/product_image/asp_scl/600x0/364849.jpg)