We initially tried to go through Colorado Discount Heating and Cooling to buy a furnace for a living space that is eight-hundred square feet large. They tried to sell us a furnace for about $3500 which I though was a complete rip off for such a small space. We ended up going elsewhere to find the furnace and were able to find one for around $300. So, I think they tried to drastically overcharge us for the furnace, and therefore I would absolutely not recommend them.