Radiant heating and cooling has been around for centuries, but new radiant technologies are constantly being developed and new applications are alway being found. How much do you know about radiant heating and cooling? Take this month's plumbing quiz and find out — you could win a $25 gift card from Amazon, iTunes or Cabelas (your choice)!

And congratulations go out to last month's winner of our Plumbing History Quiz, Vlad Karpnko. Vlad, your $25 Amazon gift card is on the way!