tldr; Reddit rarely discusses Alarm.com thermostats specifically; most mentions focus on their security ecosystem, with the thermostat seen as an add-on for existing Alarm.com users.
Check pricesBest praise vs top criticism for Alarm.com Smart Thermostat HD
“I would look at a DIY Alarm.com dealer like Surety. Their alarm panels also support a lot of home automation using Z-Wave, Zigbee, etc.”
263 mentions
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77 Reddit opinions analyzed • Last updated 2/24/2026