Its not the firing or the cold thats the problem. I play Paddle tennis in 2 degree weather and love it. What it is ,is no one else will come out and the mess on the hardwood floors and throughout the kitchen is more work than trying a deep dish in the wolf oven. Its a great set up and I love trying the different styles of pizza. Do you do mostly the same crust or do you do deep dish , cracker , chicago... in the WFO? I love the VPN pizzas it puts out but I find the temp is a bit much for these other styles and by the time it cools down I am done for the night..