Review on 🔥 RV Water Holding Tank Heater Pad - 7-1/4"x25" Size, 12V DC Steps Heating Pad for Motorhomes, Trailers, Boats - Automatic Thermostat Control - Fits Up to 50 Gallons Tanks by Paul Williams

Seems to be a quality control issue. My dealer installed three of these on his Winnie Drop. Two failed immediately and were replaced by the dealer for a penny. I just had one of those bugs so I bought a replacement here (after checking out a few other options which showed me it was the best I could buy for my tanks). Unfortunately I did some electrical testing on the heater and found that it only draws 4-4.2 amps at 13.5 volts (not sure why this changes). It should draw 4.8 amps, so I'm disappointed I'm not getting the maximum output. The thermostat works but does not deliver the specified performance. I doubt if I'll send it back as it's pretty close. Update: April 6, 2021 Another one of these has just failed (the failed unit has been working for about 2 years). I have 8 of these installed now and had six failures. I'm buying another one of these as it fits my tank perfectly and I haven't found anything better, but the quality and reliability really need some work.