I HAVE A WOODS UPRIGHT FREEZER MODEL # F20NAC,THE DOOR SEAL HAS GONE BAD,IT IS AROUND 5 YRS OLD ,WHERE CAN I PURCHASE A NEW ONE,MY FOOD IS STARTING TO THAW ON DOOR SHELVES

Woods are no longer in business and all parts are obsolete.

https://www.google.com/search?q=Woods+upright+freezer+WV20-ZF1%2FE+door+gasket

So, you can either buy a door gasket by the size of the one you have, or you can make one by buying a length or door gasket material and cutting 90' notches in the 4 corners and filling / gluing the corners with white silicone.

Or if the gasket is just split, you can clean thoroughly and repair with silicone. Fill the void, close the door, and clean up excess.

https://www.searspartsdirect.com/model/3d1c1uazs3-003083/wc-wood-v20wb-upright-freezer-parts

And then after typing all the above, I searched for the Part Number and there is one here!

https://maxappliances.ca/product/woods-0-90000-046-wp4357142-gasket/

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Unplug the drain tube by shooting hot water down it with a turkey baster. It is located underneath the evaporator.

There are a bunch of 1/4 screws around the door inside underneath the gasket. Make sure you unload all the food from the door. Unscrew the upper half first, remove half of old one and install a new one. Then the other half. Tip: Don't unscrew the screws all the way. Just loosen them up.

Freezer repair in Corona Del Mar, CA
Appliance repair in Corona Del Mar and Orange County, CA

if the freezer is over 5 years old,buy a new one under counter freezers not built in are fairly inexpensive and will cost less to run.fault sounds like temp sensor....
cheap part/labour intensive.....

2 months old should still be under warenty.

Check the freezer fan by opening the freezer door and pressing the door switch and listing for the freezer fan sound. If no sound then the fan motor could be bad.

Look at the back wall too see if you have frost build up. If you do then you have a defrost problem.

If thees are not your problem you could have a seal system problem. (( freon leak ))

my woods upright freezer is running very loud

I would look at the defrost control [sometimes they are defrost clocks]Maybe that the freezer is not defrosting.

it often works to warm the seal with a hairdryer and reshape it

you have a refrigeration issue partner let her go 16 yrs. is good service you can replace it for 3 to 5 hundred the repair will be that IF you can find someone with the r-12. don't go for a top it off and go deal the food you lose is to expensive for that to be economical.

these frigidaire made freezers are notorious for having restrictions in the sealed systems that will cause exactly what your describing.

what happens is oil moves around in the freon system and pools up in the capillary tubes and the freon is not able to flow properly. if the unit is under 5 yrs old then should be inwarranty to sears. if its over 5 then probably cheaper to purchase a new one..