I bought mine from Animal Plastics. It was fast and easy. I got one that was six levels with 4" belly heat. I put it together in about 15 min. It took me the longest to fit the heat tape in but that was because I had a two year old "helping" me. I didn't know where I could get the PVC 'stuff' cut. So went the easy rout. If you decide on DIY there are some great threads that show every step. Good luck