About Thermostat Explained

Thermostat Explained explains what your thermostat is telling you. When a message blinks on the screen, a mode behaves in a way you did not expect, or a setting has a name that means nothing to you, there should be one clear page that tells you what is going on and what you can change on the thermostat itself.

Who writes this site?

Pages are published under the byline Sam Calloway, the pen name of the software developer who runs this site.

Nobody here is an HVAC technician, and the site does not pretend otherwise. The method is simple: read the manufacturer manuals carefully, compare how different brands describe the same feature, and turn that into plain answers. Every figure on this site comes from a manual or an official support page, and each page lists the exact documents it relies on, with the date they were checked. If a manufacturer does not publish a number, the page says so instead of guessing.

That is also why the site stops at the thermostat. Anything that involves opening equipment or touching wiring is a job for a licensed HVAC technician, and every troubleshooting page says where that line is.

What does the site cover?

US consumer thermostats from Honeywell Home, Google Nest, ecobee, Emerson Sensi, Amazon, Carrier, Trane and Lux: display messages, modes, schedules and settings.

What does it not cover?

Repairs. This site stops at the thermostat. It never tells you to open your heating or cooling equipment or to work on wiring. Every troubleshooting page ends with the specific signs that mean you should stop and call a licensed HVAC technician.

How is the site paid for?

By display advertising. No manufacturer pays for coverage, and no page is written to sell a product. See the editorial policy for how pages are sourced, reviewed and corrected.