My shower starts hot for about 2 - 3 minutes then starts turing cold. Hot water in bathroom sink is still hot when I check it out after shower goes cold. I have three handles on the shower. They are old maybe 25 -35 years old. Just started a few weeks ago.

Mention this to the workers at Lowe's, or home Depo. They have retired plumbers on staff. I am sure that they could help

The washer on the hot side is loose and swelling when it gets hot. Replace the washer, possibly new stems for both. What brand is it?

Thanks doug238. Not sure what brand know it is old about 25 - 30 years or so. Will try new stem and washer. Thanks for your input.. tatarman