Will it work with your system?
Works well with
- Phone control and scheduling
- Systems the maker's checker confirms
Check first if you have
- Line-voltage baseboard heat
- Millivolt gas heaters
What it controls
The Google Nest G5AJK GJQ8U Learning Thermostat is a learning thermostat. Its listing doesn't spell out which heating and cooling systems it supports, so run the maker's compatibility checker before you buy.
On power, the listing doesn't say whether it needs a C wire. What a C wire does.
The listing doesn't state heat pump support; if you have an O/B wire, confirm with the maker before ordering. Heat pump wiring.
Connectivity: Bluetooth, Wi-Fi. It amazon Alexa.
Not sure of your wiring? The wiring checker reads your system from the terminal letters and checks it against this model's statements.
Also on the listing: a weight of 1.5 lb and a lcd.
Compatibility and specs
These come from the maker's listing for this exact model; the source of each is marked. Anything the maker leaves out is marked not stated.
| Model number | G5AJK GJQ8U | Retailer |
|---|---|---|
| Model name | Nest Learning Thermostat Pro Edition | Retailer |
| Works with | Amazon Alexa | Retailer |
| Features (seller) | Programmable | Retailer |
| Connectivity | Bluetooth, Wi-Fi | Retailer |
| Display | LCD | Retailer |
| Mounting / installation | Wall Mount | Retailer |
| Batteries | 1 Nonstandard Battery batteries required. | Retailer |
| Product weight | 1.5 lb | Retailer |
Strong points and weak points
Strong points
- Works with Amazon Alexa
Weak points
- C-wire need not stated
- Needs Wi-Fi for smart features
Wiring and install notes
- Compatibility statements are the maker's own. Confirm with the maker's compatibility checker, turn the power off before wiring, and leave line-voltage and furnace work to a licensed electrician or HVAC technician.
Thermostats to compare it with
FAQ
Does the Google Nest G5AJK GJQ8U Learning Thermostat need a C wire?
Does the Google Nest G5AJK GJQ8U Learning Thermostat work with a heat pump?
Other smart thermostats with similar wiring
- Honeywell Home THX321WFS2001W Smart Thermostat
- Riseem STN701W-Blue Smart Thermostat
- meross MTS300 Smart Thermostat
- Google Nest BH1254-US Smart Thermostat
All smart thermostats in one grid · Every Google Nest control listed
Our take
A fit for phone control and scheduling.
Where to get it
The link goes to this exact model's listing. Check that the box includes the trim plate or C-wire adapter you need, and confirm your wiring with the maker's compatibility checker before you order.
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