If you’re staring at a Honeywell zone control board and the PURGE light is blinking, I know exactly why you’re concerned. Homeowners usually ask me two things: In most Honeywell TrueZONE systems, a blinking PURGE light usually points to a Discharge Air Temperature Sensor problem. Honeywell calls it the DATS sensor. It’s the small sensor … Read more
Your Honeywell thermostat is basically the control center of your whole heating and cooling system. When it starts acting up, the symptoms can look scary. Blank screen, wrong temperature, Wi-Fi dropping, heat not turning on, AC short cycling. After 10 plus years working as an HVAC technician, I can tell you something reassuring. A reset … Read more
I’m Nathan. I’ve been an HVAC technician for over 10 years, and if there’s one thing I’ve learned from service calls, it’s this: most thermostat problems get solved a lot faster when you’re looking at the correct manual for the exact model on your wall. Emerson thermostats are a little tricky because many “Emerson thermostat” … Read more
Hi, I’m Nathan. I’ve worked as an HVAC technician for over 10 years, and a big chunk of my service calls have started with the same sentence you might be thinking right now: “My Emerson thermostat is acting weird.” The good news is most Emerson thermostat problems are simple. In many homes, I can get … Read more
I’m Nathan, and I’ve worked as an HVAC technician for over 10 years. I’ve been in a lot of homes where the thermostat looks fine but one little symbol, like a blinking flame, has the homeowner worried something is failing. Here’s the good news. On many Emerson thermostats (including Emerson Sensi and many White-Rodgers models … Read more
I’m Nathan. I’ve worked as an HVAC technician for over 10 years, and I can tell you this is one of the most common “my thermostat is broken” moments I see in winter. You look at your Google Nest Thermostat and suddenly it says AUX or EMER, the screen color changes, and your next thought … Read more
Hi, I’m Nathan. I’ve worked as an HVAC technician for over 10 years, and I’ve seen this exact situation in thousands of homes: you pull the thermostat off the wall to install a new one and find a blue wire that isn’t connected to anything. Most of the time, that blue wire is not a … Read more
If your Nest Thermostat is acting weird, won’t connect to Wi Fi, or you’re moving and need to hand it off to someone else, a reset is usually the cleanest fix. I’ve been an HVAC technician for over a decade, and I can tell you this is one of the most common “smart thermostat” problems … Read more
I’m Nathan, and I’ve worked as an HVAC technician for over 10 years. In that time, I’ve installed and serviced a lot of Nest thermostats in real homes with real wiring quirks. The battery question comes up constantly, usually right after someone sees a low-battery message, the screen goes blank, or Wi Fi starts dropping. … Read more
I’m Nathan. I’ve been an HVAC technician for over 10 years, and I’ve helped a lot of homeowners set up Nest thermostats after installs, Wi-Fi changes, router upgrades, and phone swaps. One of the most common hang-ups is the entry key. You’re in the app ready to connect, and the thermostat is sitting there like … Read more