@albertballewI don't understand why you want to use a voltage regulator instead of a powerline conditioner unless you are constantly experiencing significant voltage fluctuations from your mains supply.
If mains filtering is a requirement, something like this https://furmanpower.com/products/it-ref-15i which is based on an isolation transformer might be an option where high current is necessary. These units can be sourced at reputable dealers on the internet new for a fraction of this price if you are interested.