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Honeywell RTH221B: The Weekly Programmable Thermostat That Simplifies Home Comfort
Thermostats

Honeywell RTH221B: The Weekly Programmable Thermostat That Simplifies Home Comfort

Posted on: October 7, 2025October 7, 2025

Honeywell RTH221B: The Weekly Programmable Thermostat That Simplifies Home Comfort In our latest exploration of home climate control options, we’ve been testing the Honeywell RTH221B1021/E1 Programmable Thermostat in…