Honeywell RTH9580WF
Score: 75/100
ecobee3 Smarter
Score: 84/100Rankings
The ecobee3 Smarter thermostat provides a 3.5-inch color touchscreen and a suite of built-in sensors for precise climate control, along with broad 24 V HVAC compatibility and optional Power Extender Kit. It requires a C-wire or additional kit and uses older 2.4 GHz Wi-Fi, which may limit some setups. Best suited for users wanting multi-zone sensing and Apple ecosystem integration.
The Honeywell RTH9580WF delivers a sleek low-profile design, vibrant color touchscreen and Smart Response learning for precise temperature control. Its drawbacks include discontinuation, reliance on a C-wire and occasional Wi-Fi reliability issues. It suits tech-savvy homeowners who value aesthetics and learning algorithms but can manage potential support limitations.
| Attribute | | |
|---|---|---|
1 years | 3 yearsbest | |
— | 3.5 inchbest | |
| ↓ lower better | 0.544 kgbest | 0.612 kg |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
General(2) | ||
HVAC Compatibility | Compatible with 24 V HVAC (forced air, hydronic, heat pump, oil, gas, electric); not compatible with millivolt or 120/240 V baseboard electric heat | ~95% of 24V systems (conventional 2H/2C, heat pump 4H/2C, gas/oil/electric/dual fuel, humidifier/dehumidifier/ventilator/HRV/ERV) |
Warranty (years) | 1 years | 3 years |
Connectivity(2) | ||
Wi‑Fi Standard | 802.11b/g/n | 802.11 b/g/n (2.4 GHz) |
Smart Home Integration | Alexa | Apple HomeKit, Amazon Alexa, Google Assistant |
Power & Installation(1) | ||
Power Source | 24 V | 24 VAC |
Display(1) | ||
Display Type | Capacitive touchscreen | color touchscreen |
Build & Design(2) | ||
Device Weight (kg) | 0.5443 kg | 0.612 kg |
Device Dimensions (H×W×D) (mm) | 0.88x3.5x4.5 in mm | 23.6×100.3×100.3 mm mm |
Products in the top-left offer the best value (high score, low price).
Professional reviewers commend the Honeywell RTH9580WF for its ultra-slim profile, vibrant customizable touchscreen, and Smart Response learning that balances comfort with energy efficiency. Editors also note the ease of programming, integrated weather data, and ENERGY STAR rating as strong points, while flagging the product's discontinuation and limited sensor array as drawbacks.
Everyday users appreciate the intuitive touch interface, precise temperature control, and the convenience of remote app management, often citing the customizable display as a fun feature. Recurring complaints focus on Wi-Fi connectivity challenges, occasional app glitches, and the lack of automatic geofencing, with some expressing concern over the thermostat being discontinued.
Professional reviewers commend the Ecobee3 for its comprehensive sensor suite that enables smart recovery and precise humidity management, as well as its extensive HVAC compatibility that covers most 24V systems. They note its value for multi-zone comfort without a hub, while pointing out the need for a C-wire or Power Extender Kit and the lack of newer Wi-Fi standards compared to later models.
Everyday users praise the thermostat for its straightforward installation and reliable Wi-Fi control, especially appreciating the seamless Siri and HomeKit integration. The most common feedback revolves around occasional wiring difficulties in homes without a C-wire, but overall sentiment is highly positive.
“Intuitive touch interface”
“Wi-Fi setup issues”
“ease of install and Wi-Fi control”
