I’m Nathan. I’ve worked as an HVAC technician for over 10 years, and I can tell you this upfront: a Trane thermostat showing “Waiting” is usually normal and temporary. Most of the time it’s not a “your system is broken” message. It’s a built-in safety delay that protects your compressor from damage. That said, there … Read more

I’m Nathan. I’ve worked as an HVAC technician for over 10 years, and I can tell you this combo is one of the most misunderstood readings I see in the field. When someone hears “superheat is low,” they often assume the system is low on refrigerant. But when superheat is low and subcooling is high … Read more

Hi, I’m Nathan. I’ve worked as an HVAC technician for over 10 years, and one of the most common calls I get is some version of “my Bradford White water heater quit and I don’t have hot water.” A lot of the time, the fix is simple: the high limit safety tripped, and you just … Read more

I’m Nathan. I’ve worked as an HVAC technician for over 10 years, and while most of my day-to-day is home heating and cooling, thermostats are still thermostats. The principles are the same: a thermostat is a temperature-controlled valve or switch that helps a system reach and hold the right operating temperature. In your car, that … Read more

Hi, I’m Nathan. I’ve worked as an HVAC technician for over 10 years, and while home HVAC and automotive AC aren’t identical, the fundamentals are the same: move heat, control airflow, and keep pressures and temperatures in the right range. If your car AC is blowing about 50°F air, you’re probably thinking one of two … Read more

I’m Nathan. I’ve worked as an HVAC technician for over 10 years, and I’ve been on a lot of summer no cooling calls where the homeowner swore the thermostat was the problem. Sometimes it is. A lot of times, the thermostat is doing exactly what it should, but something else in the system is stopping … Read more

Hi, I’m Nathan. I’ve worked as an HVAC technician for over 10 years, and one of the most common “small but annoying” complaints I hear is: “My Lennox thermostat works… but it won’t show the outside temperature.” The good news is this is usually a setup issue, a Wi Fi weather issue, or a sensor … Read more

I’m Nathan, and I’ve worked as an HVAC technician for over 10 years. When homeowners call me about an AC that “kind of cools” or a heat pump that’s acting unpredictable, a failing or restricted TXV is always on my shortlist. Not because it’s the most common part to fail, but because when it does … Read more

Hi, I’m Nathan. I’ve been an HVAC technician for over 10 years, and I’ve walked into a lot of homes where the same thing happens. You go to cool the house, you look at your White Rodgers thermostat, and the snowflake icon is blinking. The air conditioner either isn’t running yet, or it’s running but … Read more

Hi, 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 calls I get: you walk by your Honeywell thermostat and the screen is blank, frozen, or won’t light up no matter what you press. The good news is that a … Read more