concerns about heat are unfounded. Currently using one of George Merrills cleaners.
http://hifigem.com/hydraulic-lp-cleaning-apparatusMKII.html
it is a bit messy but if you have a utility sink somewhere like I do it does a fantastic job
After applying the supplied cleaning fluid, I've got enough water pressure that I use hot water from the tap to rinse with a hand sprayer after I blast them with a handheld steam cleaner and never warped a record, even those really thin ones. Try it yourself on a throw away record
there was a lengthy, really lengthy thread, a few years ago about using a steam cleaner... I won't rehash it ... but it works,, something like this which is the one I am currently using
https://www.amazon.com/gp/product/B06XHXFHWG/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1
http://hifigem.com/hydraulic-lp-cleaning-apparatusMKII.html
it is a bit messy but if you have a utility sink somewhere like I do it does a fantastic job
After applying the supplied cleaning fluid, I've got enough water pressure that I use hot water from the tap to rinse with a hand sprayer after I blast them with a handheld steam cleaner and never warped a record, even those really thin ones. Try it yourself on a throw away record
there was a lengthy, really lengthy thread, a few years ago about using a steam cleaner... I won't rehash it ... but it works,, something like this which is the one I am currently using
https://www.amazon.com/gp/product/B06XHXFHWG/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1