Amazon Smart Thermostat: full spec sheet and buying guide

Updated September 29, 2026 · Category: Smart home · Content based on official specifications and public Amazon buyer ratings, not a hands-on test.

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The Amazon Smart Thermostat is an affordable ENERGY STAR thermostat controlled with Alexa, made with Honeywell Home thermostat technology. At the time of writing it holds a 4.0/5 average from more than 25,528 Amazon ratings.

★ 4.0/5 on Amazon

ENERGY STAR certified, Alexa control and schedules, remote control from the Alexa app, guided DIY installation and Honeywell Home technology.

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Ratings and prices are as shown on Amazon at the time this article was published and may have changed. Affiliate disclosure.

Saving energy

Amazon cites EPA estimates that ENERGY STAR certified thermostats save an average of $90 a year on energy bills. You can create home, away and sleep schedules, or let Alexa adjust the temperature automatically. After purchase, Amazon emails you about possible rebates from your energy provider.

Control and installation

You control it from the Alexa app when you're away, and select Alexa devices can adjust heating and cooling based on their temperature readings or presence detection. The Alexa app guides a do-it-yourself installation. Before buying, check that your heating and cooling system is compatible and whether you have a C wire (or need the adapter).

Strengths based on its spec sheet

ENERGY STAR certified
Low price for a smart thermostat
Honeywell Home technology
Possible utility rebates

What to consider before buying

Designed around Alexa
Check HVAC and C-wire compatibility first
Lower 4.0 average rating

Want to compare this product with other smart home options? Check out our smart home buying guide.

Who is it ideal for?

Alexa homes that want an affordable way to schedule heating and cooling and save energy.

Who is it NOT the best option for?

If you use Google Home or an iPhone without Alexa, the Google Nest Thermostat fits better; see our smart home buying guide.

Frequently asked questions

Does it need Alexa?

Yes, it's set up and controlled through the Alexa app.

Can I install it myself?

Yes, the Alexa app guides you, but check your system's compatibility and C-wire needs first.

How much can it save?

Amazon cites EPA estimates of about $90 a year on average for ENERGY STAR thermostats; real savings vary.

Is the Amazon Smart Thermostat the right fit for you?

See current price on Amazon