Amazon is where I got mine. I also got a new heat cartridge 24v 70w that heats up insanely quick.

Thermostat https://www.amazon.com/gp/aw/d/B0BHSLDC5J?psc=1&ref=ppx_pop_mob_b_asin_title

Heat cartridge
https://www.amazon.com/gp/aw/d/B0B245P1VR?psc=1&ref=ppx_pop_mob_b_asin_title