I have a York heating air conditionong system , a/c stopped working
I am told there is a filter in my furnace unit that if dirty will cause ac not to operate.

York model # m3uf044sa

How do I get filter out of furnace to clean it ?
Thanks

If you have a filter inside the unit it will be in the lower side of the unit(air intake side). Not many companies will leave a filter inside the unit because the home owner forgets to change them. You may just have a filter at the return air grill inside.