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Re: GOODMAN # ARUFO49 AIR HANDLER
MOST ALL GOODMAN ( UP TO 3 TONS)INTERNAL FILTERS ARE 22" x 22" X 1". YOU CAN GET THEM ON LINE AT www.filtera.com.
ALWAYS TAKE A TAPE RULE AND OPEN THE BOTTOM FILTER DOOR AND MEASURE THE FILTER RACK.
MAKE SURE YOU DO NOT HAVE A RETURN-AIR FILTER-GRILLE. LARGE WHOLE -HOUSE RETURN AIR VENT NEAR OR AT YOUR FURNACE, A/C AIR HANDLELER.
Joe_Rex New Member of FixYA
Retired HVAC&R contractor 45+ years exp.
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The model number you listed is for the outside unit which does not have a filter. The indoor part of this system (the furnace or air handler) is what has the air filter. The size varies because the installer usually makes a bracket to hold the filter when the furnace is installed. Need to locate the filter and replace it with the same one. Size should be marked on the old filter.
No you can not use a R-410 air handler with a R-22 condenser unit...the exspansion devices are different as the properties of the refrigerants are enough different that they are not interchangable...
Really your only choice is to replace the whole unit as it sounds like the exspansion valve or the orfice is partially clogged and it makes you constantly freeze up....
There are some things you could do to make it work at reduced capacity but it is way beyond what I could tell you through a computer...
I need more info than just the outdoor unit number. The air handler will be a specific number. If you pull the access panel off the heater, there will be a faceplate inside with the unit name and model number as well as a schematic on the back side of the door.
Either its in a filter grille or its at the furnace/air handler itself. If its in the grille, simply remove and replace.
If its in the unit, it will be at one far end of the unit opposite where the electrical connections are. It's uncommon for Goodman to be filtered at the unit as they do not have an independent filter access panel but I have seen it.
If its not in either of these locations, you either do not have a filter installed or your installing contractor has installed a filter box somewhere that will need to be located.
You may need a "current sensing relay" to clip around the neutral wire on your blower.
Run the 120v power to the main power (the power switch- hot,neutral and ground) . Run the Hot wire through the "Current Sesing Relay" wires to the EAC unit's 120v. power input. The unit will only run when the fan is on.
If your running gas heat it's 5/8 3/8 tubing.If it's elec. heat it's 3/4 3/8 tubing. Etheirway 3/4 3/8 works for both. Use 6 wire for tstat from tstat to furnace or air handler, and you need is 2 wire from condensing unit [outside] to furnace or air handler or anything more than two.
These guys list the actual sizes of a good selection of goodman filters - just measure the old one or the space where it should be and match it to the right filter(should be a fairly tight fit).
and this site describes what the different filter types available are
Hope this helps :)