Looking back at other posts in the thread, I don't think just adding a fan or two is going to solve the problem for you by itself. And BTW small fans (the right ones) are often quieter than the blower on a stove), the ones I use are -- big box fans can be noisy, but efficient small table fans are often pretty quiet especially when run on low just to move the air. But am still questioning whether you're getting it as hot as possible. You talk about lots of hot coals, and coals are at the latter (cooler) stages of the burn, or used to light off the wood in a new fire. If and when you've determined that a really large fire with a fully loaded firebox still can't get the heat you want then, you probably need something larger. If the dealer made the recommendation of the Enerzone unit based on the size of your house, etc., and you relied on his recommendation, you might have some recourse (at least in a moral sense if he's a decent guy) to go back to him and have him try to make things right for you. Worth a try anyway. And he might have some ideas himself as to what you can do. My situation was the first year I was afraid to really fill up the firebox and get it real hot. There were all these warning about over firing. But eventually I realized that the only way to get the house warm was to keep the stove in the 500 + range or even higher if possible for a few hours. You need to know the temp of the stove either with a magnetic thermometer or an IR gun and see how hot your getting it and how long you can keep it there. That's my experience fwiw, anyway.