Review · Budget pick · Smart thermostats
Thermi Go review
A simple smart thermostat with a clear app and no subscription.
Tested by Jake MorrisonReviewed by Ryan MitchellIn use October 15, 2025Purchase Bought ourselvesUpdated September 1, 2026Reading time 5 minutes
7.9out of 10
7.9/ 10
Our test scoreThermi Go
Savings8.2
Installation7.8
App8.0
Integrations7.4
Check price on AmazonPrices checked September 30, 2026. We may earn a commission. Learn more
6-month price historyLowest: $119
$133
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AprMayJunJulAugSep
A simple smart thermostat with a clear app and no subscription.
Pros
+No subscription
+Fits existing wiring
Cons
–No modulating control
Specifications
Price from$119
Test score7.9 out of 10
Rank in our testBudget pick
Tested inThe best smart thermostat
Models compared8
Test period12 weeks
How it compares
| WarmWise 3 | Thermi Go | WarmWise Pro | |
|---|---|---|---|
| Test score | 8.9 | 7.9 | 9.1 |
| Price from | $219 | $119 | $299 |
| Rank | Our pick | Budget pick | Upgrade |
Alternatives
Frequently asked questions
Does a smart thermostat work with every HVAC system?+
Almost all modern systems work with it. Some models need a C-wire for continuous power.
How much do you really save?+
In our test, between 6 and 11 percent on energy compared with a programmable thermostat, depending on how often you’re away.
SourcesHouseholdMe in-house measurements (2026)Manufacturer specifications and manual
Changelog
September 1, 2026Prices checked and review updated.
October 15, 2025Review published.
Tested byJake MorrisonHVAC installer by trade, tests tools and smart devices for the home.
Reviewed byRyan MitchellReviews every buying guide before publication. Former consumer news editor.
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