
Honeywell Home RTH6580WF
Score: 75/100
Amazon Smart Thermostat
Score: 73/100Rankings

The Honeywell Home RTH6580WF is an affordable Wi-Fi thermostat that offers solid basic scheduling and broad system compatibility. Its main drawbacks are the lack of geofencing, auto-learning, and the need for a C-wire. It is best suited for budget-conscious homeowners with standard 24 V HVAC systems who want voice-assistant control.

The Amazon Smart Thermostat is an ENERGY STAR-certified, Alexa-focused thermostat with auto-learning temperature control and a compact touch-sensitive display. Its main trade-offs are the mandatory C-wire and limited 2.4 GHz Wi-Fi with no built-in voice mic. Ideal for Alexa/Ring users seeking an affordable, easy-install solution.
| Attribute | ![]() | ![]() |
|---|---|---|
1 yearsbest | — | |
— | 0.9 inchbest | |
| ↓ lower better | 0.544 kg | 0.11 kgbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
General(1) | ||
HVAC Compatibility | Gas/oil/electric heat with central AC, heat pump (with/without backup/aux heat), heat only (with/without fan), cool only, multi-stage up to 2 heat/2 c | 24V |
Connectivity(1) | ||
Smart Home Integration | Alexa, Google Assistant, Samsung SmartThings, IFTTT, Bonomi, Wink, Stringify | Alexa, Ring |
Power & Installation(1) | ||
Power Source | 24 V | C‑wire (24V) |
Display(1) | ||
Display Type | Backlit digital | Touch-sensitive |
Build & Design(2) | ||
Device Weight (kg) | 0.544 kg | 0.1095 kg |
Device Dimensions (H×W×D) (mm) | 147x89x38 mm | 21.4×90.4×90.4 mm mm |

Products in the top-left offer the best value (high score, low price).

Professional reviewers consider the Honeywell RTH6580WF a solid budget smart thermostat that delivers essential Wi-Fi functionality without the expense of premium models. They commend its reliable build, ENERGY STAR efficiency, and broad system compatibility, while noting the absence of geofencing, auto-learning, and the need for a C-wire as drawbacks.
Everyday users generally praise the thermostat for its easy installation, straightforward Wi-Fi setup, and noticeable energy savings. Common frustrations revolve around wiring requirements, occasional app or connectivity glitches, and the lack of automatic schedule learning.

“Easy Alexa-guided install (even with new C-wire)”

“Heats to 68°F home, drops to 52°F away”



Professional reviewers consider the Amazon Smart Thermostat a strong value proposition, praising its auto-learning algorithm, tight Alexa integration, and broad 24V HVAC compatibility while noting its ecosystem constraints, mandatory C-wire, and limited connectivity as notable drawbacks.
Everyday users generally appreciate the straightforward Alexa-guided setup, reliable auto-scheduling, and remote app control that delivers noticeable energy savings, but they frequently cite the C-wire requirement and occasional cycling glitches as pain points.