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The verdict in 90 seconds
The ecobee Smart Thermostat Enhanced is the ecobee most people should buy. It runs the same software, supports the same SmartSensors and ships with the same Power Extender Kit as the flagship Premium, minus the built-in microphone, the air quality monitor and the sensor in the box — which are precisely the three Premium features owners describe as unreliable or unnecessary. It earns a stronger owner rating than the Premium as a result. The catch is honest: you must budget for at least one sensor, or you are paying ecobee money for a thermostat that behaves like a plain one.
Best for ecobee sensor support without paying for a microphone and an air quality monitor
- Supports ecobee SmartSensors, sold separately
- Power Extender Kit included for homes with no C wire
- Works with Alexa, Siri and Google Assistant
- eco+ efficiency features and time-of-use awareness
Why buy it: it is the full ecobee platform, sensors included, at a price much closer to the value tier than the flagship.
What owners consistently praise
Sensor support at a lower entry price. The reason to be in the ecobee ecosystem at all is that it lets a remote room drive the system. The Enhanced does that in full — up to 32 SmartSensors, each reporting temperature and occupancy, each configurable to participate always, only when occupied, or on a schedule. Owners describe the same transformation the Premium buyers do: the cold bedroom stops being cold.
The Power Extender Kit in the box. Wiring is the number one cause of returns in this category, and ecobee ships the fix with every unit. Owners in houses built before 2010 repeatedly report that the ecobee installed where a previous thermostat had already been sent back.
eco+ and honest scheduling. Smart recovery that pre-runs the system so the house hits target on time, community energy savings for households that opt in, and time-of-use awareness for anyone on a variable tariff. Owners on time-of-use rates report the clearest measurable savings.
Broad ecosystem support without an on-board assistant. Alexa, HomeKit, Siri, Google Assistant and SmartThings all work. Reviewers consistently frame the absence of a built-in microphone as a feature rather than a loss.
Wide HVAC compatibility. Multi-stage furnaces, heat pumps with auxiliary heat, dual-fuel and accessory control are all supported — the same list as the Premium, which is unusual at this price.
What owners actually complain about
Sensors sold separately, and the price gap that follows. This is the most common criticism. Add one SmartSensor and the Enhanced sits within about 30 to 40 dollars of the Premium, which ships with a sensor. Owners who worked that out after buying feel it, and some say they would have taken the Premium had the arithmetic been clearer on the shelf.
The display is dimmer and lower contrast. Compared side by side with the Premium, owners describe the Enhanced screen as noticeably flatter and harder to read at an angle or in bright daylight. It is a plastic front rather than glass. Nobody calls it bad; plenty call it visibly cheaper.
Deep, fiddly configuration. Staging thresholds, minimum runtimes, auxiliary heat lockouts and sensor participation rules are all buried in nested menus. Heat pump owners in particular report getting the staging wrong initially and seeing short cycling or unnecessary aux heat until they went back through the settings — and the app does not warn you.
Wi-Fi drops and cloud dependence. A persistent low-level complaint: occasional disconnections needing a power cycle, and remote control going dark during ecobee server outages. Local control from the wall continues, but automation and the app do not.
The PEK step intimidates people. Fitting the Power Extender Kit means opening the furnace or air handler and rewiring a control board. Owners without a C wire who are not comfortable doing that end up paying an HVAC technician 100 to 200 dollars, which changes the value equation substantially.
Sensor battery life and range. Coin cells generally last around a year, and a minority in larger or older houses report sensors dropping off at distance through dense walls.
Who it suits, and who should buy something else
Buy it if you want ecobee sensors and full HVAC compatibility, you can budget for a sensor, and you have no interest in talking to your thermostat.
Buy the Premium instead if you want the sensor included and the glass display, and you will genuinely use the air quality readout — our ecobee Premium review covers where those extras fall short.
Buy a Sensi ST55 instead if every room in the house is already comfortable and you just want remote control on old wiring for around 100 dollars — see the Sensi review.
Buy the Amazon Smart Thermostat instead if you have a confirmed C wire, an Alexa household and no uneven-room problem — our Amazon Smart Thermostat review explains the trade. The complete ranked field is in our best smart thermostat guide.
Specifications
| Spec | ecobee Smart Thermostat Enhanced |
|---|---|
| In the box | Thermostat, Power Extender Kit, trim plate — no sensor |
| Display | Colour touchscreen, plastic front |
| Remote sensors | Supported, up to 32; sold separately |
| Voice | No built-in assistant; works with Alexa, Siri, Google Assistant |
| Air quality | Not included |
| C wire | Not required — Power Extender Kit included |
| Systems | Conventional, heat pump with aux, multi-stage, dual fuel |
| Efficiency | eco+, smart recovery, time-of-use support |
| Certification | ENERGY STAR |
| Warranty | 3 year limited |
The bottom line
Strip a flagship of the features its own owners disable and you get a better product, which is roughly what happened here. The Enhanced is the value-correct ecobee: same brain, same wiring solution, same compatibility, lower price. Budget for one SmartSensor at the same time, plan the Power Extender Kit step before you start, and it will do everything a 250 dollar thermostat does that actually matters.
Check price on Amazon → (paid link)
Next: sanity-check the category in are smart thermostats worth it, price the job in how much a smart thermostat costs, plan the swap in how to replace a thermostat, or start from the heating and cooling hub.