About this item
- Simple programming for the entire week, up to 4 periods per day
- Easy to use, basic operation makes programming easy
- Precise +/- 1 Degrees F temperature control
- Easy to install
Q: is this thermostat a 12 volt thermostat i have an old 12 volt termostat needing to be replaced badly
A: Hi raymond, thank you for your question. This thermostat works with 24 VAC systems. We can recommend you a 12 V thermostat. Please reach out to our tech support team at (800) 633-3991 or send us a Private Message to our Honeywell Home Facebook account. - Mariasubmitted byResideo Team - 24 days agoBrand expert
Q: Hi, this thermostat work with electric baseboard heater, what is the voltage & this is 2 wire or 4 wire ?
A: Hi Malik, this is a low voltage (24V) thermostat. To verify the compatibility of this thermostat and your system or recommend you a compatible thermostat we need to know what is the voltage of your system and how many wires your current thermostat has. - Mariasubmitted byResideo Team - 1 year agoBrand expert
Q: what model # is this Honeywell thermostat?
A: Hi Martin, the model number of the Honeywell Home 1-Week Programmable Thermostat is RTH221B1039. Hope this helps! -Jerrysubmitted byResideo Team - 1 year agoBrand expert
Q: is this thermastat compatible with a heat pump? Thanks!
A: This model is compatible with heat pump applications. -Joeysubmitted byResideo Team - 1 year agoBrand expert
Q: Necesito instrucciones para el honeywell termostato
A: Hi, we'd love to assist you with this! Please reach out to our support team on Facebook/Twitter with a private message. We look forward to hearing from you soon.– Charliesubmitted byResideo Team - 2 years agoBrand expert
Q: Is the color pure white? Or, off-white? Thanks!
A: This model is pure white.submitted byHoneywell Support - 3 years agoBrand expert
Q: How do you change the battery
A: See page 7 of the installation instructions. Carefully pry off the cover and replace the batteries (2AA)submitted byDon - 7 years ago