Aaron In MinnesotaGot a new mattress pad last year, & just getting it set up again for this winter. Really looking forward to some winter sleeps with this thing. https://neataquapad.com/product/aquapad-cozyflow/
Electric pads are cheaper, but the evenness and improved control of the temperature was something I found really nice with the hydronic system.
In any case a warm bed instead of heating the air in the room while you're under the blankets anyway - highly recommend for both energy efficiency & the sleep quality.
NEAT AquaPad | Water Heated Mattress Pad | Safe, Save & Smart | 50°F to 149°F | 5 Year Warranty
AquaPad is designed in California using water heating technology to improve sleeping quality. It provides natural heating without the risk of overheating. The internal sensors allows precise control of heating temperature (50°F to 149°F). Water continuously circulates to provide even heat distribution for additional comfort and relieves stress, inflammation and soreness all over. Saves up to 50% electric bill during winter. Remote control for easy control from you bed. Loaded with fast heating, sleep mode, child lock, auto off and other smart features.