Nope. I have 6 ball pythons in 6 cages and all are heated by radiant heat panelsRHP's are awesome as they don't zap humidity, they raise ambient temps (flex watt and UTH's can't), and they are really awesome. Here's how Rich describes the effectiveness of RHP's:
"...RHP's are similar to Ceramic Heat Emitters (CHE) - they both project IR heat into the cage. Unlike CHE's that get very, very hot on their surface, these RHP's maintain temperatures safe to use inside the cage. This Infrared Heat tends to heat objects more than the air, much like the natural sunlight outdoors. This type of heat mimics real sunlight both in the direction it comes from and its penetration into the muscle tissue. IR heat has been shown to have a therapeutic effect on sick and injured animals as well. Your reptiles will spend less time basking and receive a much greater benefit from it. The RHP has been the heat of choice for the bird community for years due to these benefits. We at Reptile Basics Inc want to see the RHP gain this popularity in the reptile field!..."
Here is a link to the RHP FAQ from the Reptile Basics site and from which the above quote was copied: http://www.reptilebasics.com/Radiant...FAQ-sp-11.html