Question about Goodman GMS90703BXA Heater

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Furnace filter on model gmt070-3a...

Our furnace stopped heating in the middle of the night, We are looking to change the filter on the actual model but, can't seem to find the location on the furnace it's self. Can you please let us know where it is so we can replace it? thanks
Brandi Shortt

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We had a similar question on our Goodman furnace, couldn't find where the filter goes.

Our furnace has two large metal covers that cover the lower and upper parts of the furnace in front, approximately 18 inches by 18 inches. The top one has a sticker that says "don't open equpiment, you may void the warranty". The filter is inside this compartment, at the bottom. You have to unscrew the screws that hold these two covers together, then just pull the filter out to change it.

I called the people who installed our furnace and aksed them if it really voids the warranty for us to open it up and they were non-comittal about it. Anyway, I opened it and changed the filter.

Posted on Jun 07, 2008

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Look in and around where the blower motor is located. there has to be a filter compartment there. probably near the bottom as it looks like an upflow heater. make sure the filter door is closed. it may have a door interlock switch that cuts the burner out if it is not fully closed.

Posted on Feb 02, 2008

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1 Answer

On the thermostat the "filter"


Thermostats used in homes sometimes have a timer built in which will remind you to change your furnace filter. Most of them can be adjusted or disabled. The thermostat has no way of knowing whether the filter is actually dirty, it just reminds you every so often by flashing "filter" on the display.

It is possible to reset the timer, or adjust how often it appears, or disable it completely. Exactly how to do that depends on the make and model of your thermostat. Often, it is simply a case of holding two buttons at the same time for a few seconds.

As to why the furnace doesn't come on, there can be many reasons. The problem likely is not the "filter" flashing on the display of your thermostat. Try resetting the breakers that service the furnace unit itself. Make sure that the thermostat is set to "heat" and the setting is turned up. If the thermostat uses batteries (most do these days), replace them.

If this doesn't work, the following information will be helpful to get the furnace running again:
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Hi,
Look on the back of the bottom cover... it should tell you what the blinking means...


Here is a tip that will help you try to figure out why your furnace is not working.

Basic Furnace or Heating System Troubleshooting

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