In the last 6 months, two well-known Denver heating and air companies have closed their doors. Both of these now defunct outfits had been in business for years, and had dozens of technicians and company trucks on the road. So naturally, you would think they were thriving, successful businesses, right? Actually, despite their outward appearance of success and stability, both of these companies had been hanging by a thread for years. While customers had no idea how much financial trouble these two companies were in, many of the executives at Denver's top heating and air companies knew it was only a matter of time before both companies went under.