check_circleEffective once properly configuredexpand_more0 mentions
Many users express relief and gratitude after finally getting the thermostat working correctly, restoring heat during cold snaps or fixing broken schedules. Once configured, it performs its core scheduling and temperature control functions.
Widely praised
settingsAdjustable via ISU advanced settingsexpand_more0 mentions
Owners who dig into the ISU codes find they can customize cycle times, switchover behavior, adaptive recovery, and locked temperature limits, giving more granular control than expected.
Generally positive
tuneManual override and hold functionsexpand_more0 mentions
Users appreciate being able to override the schedule using temp hold or permanent hold, and can adjust settings for heating/cooling switchover once they learn the ISU codes.
Widely praised
lock_openMaster unlock code availableexpand_more0 mentions
Users who accidentally lock themselves out find relief that a universal 1234 code exists to regain access to the thermostat.
Widely praised
calendar_today7-day programmable schedulingexpand_more0 mentions
Once enabled via ISU 120, the thermostat supports full 7-day scheduling, which some users successfully set up and value for automating temperature changes.
Generally positive
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