We tore out a old Lennox zero clearance and want to replace it. The two options we are thinking of, Opel RSF and Valcourt Antoinette are very different. We do want a large good looking glass fireplace look, but also want the heat. The store that we are working with, which is very reputable, has said that we will get quite a bit of radiant heat from the Antoinette. We haven't found too many reviews on this and if it really is able to supplement heat. Obviously the price between the two is drastic as well. We did look at the Valcourt Versailles as well but did not see a huge difference between this and the RSF, other than the price. I'm interested in thoughts on radiant heat, and if this is a viable heat source. My belief is we need blowers, but I don't know about the enclosed glass radiant heat design. Our house is about 3k sq ft, and temp get cold for us which means maybe at the worst 30's. The room in which the fireplace is located has high ceilings, about 25ft, open to a upstairs. Thanks for your help, Santa Cruz Mountain Family.