How can we help with your Helio?
Setup guides, Wi-Fi fixes, shipping and returns — and an assistant that answers from these same pages and tells you where it looked.
Helio T2 thermostat
Learning schedules, 24 V systems, Power Bridge for homes without a C-wire.
Helio Air sensor
PM2.5, CO₂, VOC, temperature and humidity — with alerts that respect your sleep.
Setup
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Installing your Helio T2 thermostat
Step-by-step wall installation for the Helio T2, from powering down to first boot.
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Is the Helio T2 compatible with my HVAC system?
Supported system types, the C-wire requirement, and what to do with heat pumps, multi-stage and high-voltage systems.
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Setting up the Helio Air sensor
Where to place the Helio Air, how to pair it, and what the first 24 hours of readings mean.
Wi-Fi
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Wi-Fi pairing and troubleshooting (Helio T2)
Pair the T2 to Wi-Fi, reconnect after a router change, and fix the common ring-colour errors.
Using your device
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Understanding Helio Air readings
What PM2.5, CO₂, VOC, temperature and humidity numbers mean, and the thresholds Helio uses for alerts.
Orders
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Returns, exchanges and refunds
The 45-day return window, what is refundable, how to start a return, and refund timing.
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Shipping times, tracking and delivery
Processing times, carriers, tracking, and what to do if a package is late or missing.
Policies
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Helio Home limited warranty
Two-year hardware warranty for the T2 and Helio Air, what it covers, and how to claim.