I will be building a new house this spring somewhere in the neighborhood of 2800 sq ft as stated in my other threads a week back. I've done alot of reading about the king in the last week and wondering if it is ok if these things get pushed hard for days at a time. Been mild this year but can see a string of days not get out of the single digits. Will I have an issue with the cat getting too hot and shortened life? I like the idea of the thermostat and the thermostatic damper for an even burn without a huge spike. Or should i stay with a hybrid to burn some of the gasses and impurities so the cat doesn't get hit with a ton and no be able to keep up? I only want to make one big investment and not have regrets.