I am going to start off first to say I am new to Electronics/Electrical world. I would not try this but I was just thinking and wanted some expertise advise. I saw this jacuzzi at Sam's Club and the guy said "I purchased 4 of these units for rental cabins. Because the are 110V they cannot maintain the temperature when in use during cold days. I WOULD NOT PURCHASE THESE IF I HAD IT TO DO OVER." (http://www.samsclub.com/shopping/navigate.do?dest=5&item=118410) Is there way you could maybe step up the voltage to make it maintain the temperature during cold weather. Or would the price be to high just to buy a bigger one ? I think it can be done. But when you throw in the money issue of parts it might change the whole problem. I guess I am just getting my brain to think that way. But I would like to read some professional opinions. Until i get that far I will stick to my simple temperature monitoring problems. thanks for all the input.