🌡️ Stay smart, save smart — your home’s brain just got an upgrade!
The T4000ES Learning Thermostat E is a modern, app-controlled smart thermostat that learns your schedule to optimize heating and cooling. Compatible with most 24V systems, it offers remote control, energy savings of 10-15%, and easy installation, making it the perfect upgrade for efficient, connected home climate management.
Specification Met | UL |
Shape | Rectangular |
Style | Modern |
Color | 1-pack |
Control Type | Button Control |
Control Method | App |
Backlight | Yes |
Number of Batteries | 1 Lithium Ion batteries required. |
Power Source | Ac/dc |
Voltage | 24 Volts |
Controller Type | Nest |
Specific Uses For Product | Heat Pump |
M**S
Works great
This is a replacement for one I previously had installed and it works great
L**L
Excellent Product! Excellent Service
Love it! The Nest learns how we like our house temperature set, and it adjust it for us. You can also control it from your phone anywhere, so if you forgot to turn the heat down when you left for the day, you just log into the Nest App. & do it. My favorite part during the winter is sleeping cool & waking up warm. You can also manually control it, which my Mom who is older enjoys!! Excellent product, great service! Going to order 1 more. Our first was from Best Buy! Your price was better & I appreciate it. Thank You
B**T
Huge disappointment!
It doesn’t work. It doesn’t light up when I walk by it (even though it is set up to do it). It doesn’t keep proper ambient temperature….I’ll press on it to see what the current room temp is (I have to click on it since it won’t light itself up…), then 10 minutes later, I’ll press on it again, and the ambient temp will be 10 degrees higher. THEN, to add to these problems, it won’t recognize my Wi-Fi (which is a brand new Eero 6e setup…but my other two identical Nests that are running different zones in my house CAN connect).Unfortunately, I waited three weeks before installing the Nest, and I then waited another week before making the decision to try to send it back for a replacement…and when I try to do that, I see that there is only a 30 day return policy. What a disappointment.I’ve owned four of these same Nest thermostats…and two of the four never worked properly right out of the box.
C**Z
Take pictures of the wires on the old unit before doing anything
I was leery about getting a Wi-Fi thermostat. After having it installed and playing with it a bit. I love it.
E**K
Good nest stat
Works well with my old 1950s radiator heater system so a good buy for me.
A**R
It does work without a C wire
Easy to install, it does work without a C wire.
L**E
Additional information on installation.
This company enclosed an information sheet with the Nest which was EXTREMELY helpful with the installation of the unit. I would highly recommend this company for any purchase
J**Y
Great value
Great product! Works just as good as the more expensive model (I have both in different homes). Will buy again.
Trustpilot
2 weeks ago
2 weeks ago