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22/9/2026
Furnace Blowing Cold Air: What to Check and When to Call
By the team at Homegrown Heating and Air Conditioning. If the furnace is running and the air at the register is cold, check the fan switch on your thermostat first. Set to ON instead of AUTO, the blower runs all the time, including the long stretches between heating cycles, and room-temperature air feels cold coming...
22/9/2026
Furnace Banging Noise When It Starts: What It Means
By the team at Homegrown Heating and Air Conditioning. A single loud bang or boom a few seconds after the furnace fires is not a rattle you can live with. It is almost always delayed ignition, which means gas collected in the burner box for a moment before it lit and then all of it...
Colorado’s Low-NOx Furnace Law: What Changed on January 1, 2026
By the team at Homegrown Heating and Air Conditioning. The Colorado low-NOx furnace law is real, it took effect January 1, 2026, and it does not require you to replace a working furnace. That last point is why most people land on a page like this. Below is what the statute says, where the number...