Model: ST75
$119.99 – $179.99
HD touchscreen thermostat with HomeKit, geofencing, and Energy Star certification
Want affordable smart thermostat
$120-180 is mid-range pricing
Have C-wire in wall
Full functionality with required C-wire
Want energy savings
Energy Star certified, 23% average savings
Use Apple HomeKit
Native HomeKit support, works with Siri
No C-wire in wall
C-wire required - no battery backup option
Want local-only control
HA integration is cloud-based
Need learning thermostat
Manual scheduling only, no learning
Want Matter support
No Matter certification
Screen becomes unresponsive after power interruptions
JustAnswerTemperature sensor too sensitive/inaccurate, requires manual calibration
Amazon reviewsHA integration is cloud-only - no local control via API
HA CommunityTemperature changes sometimes fail to apply due to Sensi backend issues
GitHub iprak/sensiC-wire required
commonCause: No battery backup design
Temperature inaccuracy
occasionalCause: Sensor placement/sensitivity
Screen issues after outages
occasionalCause: Power cycling sensitivity
No local control
occasionalCause: Cloud-only architecture
No C-wire in existing wiring
Thermostat wont work
Tip: Check for C-wire before buying or add C-wire adapter
Expecting learning capabilities
Must manually create schedules
Tip: Get Nest or Ecobee if learning is important
Expecting local HA control
All control goes through cloud
Tip: Accept cloud dependency or choose Z-Wave thermostat
Remote access, geofencing, app control, HA integration
Local touchscreen control, basic scheduling runs locally
Usage data, temperature history via Sensi cloud
All remote features cloud-dependent. No local API available. HA integration requires cloud account.
HD touchscreen. 7-day scheduling. Geofencing. Smart alerts. Energy Star (23% savings). HomeKit native. 30min install. Most HVAC compatible.
C-wire required. No local API. Screen issues after outages. Temp sensor inaccuracy. No learning. No Matter. Cloud-dependent.
Ecobee Smart Thermostat
If: Want learning and room sensors
Nest Learning Thermostat
If: Want learning thermostat
Honeywell T6 Z-Wave
If: Need local Home Assistant control
Use Apple HomeKit
One of best HomeKit thermostat options
Have C-wire, want affordable option
Good value at $120-180
No C-wire available
C-wire required - get Nest or Ecobee instead
Need local-only HA control
Cloud-based - get Z-Wave thermostat
Known issue after power outages. Try removing from wall and reinserting, or cycling breaker. If persistent, contact Sensi support for warranty replacement.
Source: User reportsNo, Sensi Touch does not learn your schedule. You must manually program schedules. For learning, consider Nest or Ecobee.
Source: Smart Thermostat GuideYes, C-wire is required. Unlike Nest or Ecobee, there is no battery backup option. Verify C-wire before purchase or install a C-wire adapter.
Source: Sensi specsYes, via the iprak/sensi HACS integration. However, its cloud-based - requires your Sensi account and internet connection. No local control available.
Source: Home AssistantYes, the Sensi Touch ST75 has native Apple HomeKit support. You can control it with Siri and add it to HomeKit automations without any additional bridge.
Source: Sensi website