You could always try copper tubing (other hand moldable tubing) coiled around the exhaust. Most washer fluid systme route the rubber hosing through the fender and close to the hood hinge.
Stock fluid bottle --> route rubber hose outlet to engine bay --> copper tubbing coiled around close to firewall --> rubber hose secured to firewall --> into stock sytem around hood.
Pros:
Cheap
uses waste heat
No additional draw on electrical system
faster/hotter?
Cons:
Copper + salt
not “neat”
too hot…boiling…clogged deposits
Other options; single pass along rad, single pass along engine block, head, oil pan…