My husband just took one apart and the ceramic heat plate said 12 watt. They arent heated from a bulb. Its a square ceramic plate. She said that all of there tart warmers were made with the same watt. She said she would understand if there was only one of them not working but that it was crazy that I was saying they were all bad. They only have a 7 day return policy so I am screwed! LOL I will try to melt some container wax and see how that works but I dont want to change a good thing, my tarts are really strong with the 4794 wax, I just told her I wouldnt order from them anymore since I was having so many complaints. Id really like to hear from some that has bought these! If anyone oders from them you will know what I am talking about when I name the ones I have bought-Primitve star,stacked bowls,primitve candle,and vine and berry!