New! Honeywell Home Programmable Thermostat, Single-Stage, 1 Heat/1 Cool Compatibility, Flexible Schedule, X2P, White, RTH21B

Name: New! Honeywell Home Programmable Thermostat, Single-Stage, 1 Heat/1 Cool Compatibility, Flexible Schedule, X2P, White, RTH21B
Brand: Honeywell Home
SKU: awhd-us-b0dsgf9gdj
Price: 16.00 USD
Availability: InStock

Brand: Honeywell Home

Condition: Used

$16⁰⁰

$49⁹⁸

-68% Save $33⁹⁸

Updated: 2 days ago

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Description

CUSTOMIZE: Choose to receive change air filter reminders, change out the decorative accent color with interchangeable white and gray accent pieces, and select display settings to optimize this thermostat for home. The RTH21B is a directly replacement the RTH2510, and replacement for the RTH2410 offering personalized programming of 7-day, 5-1-1 day, 5-2 day or 1 week schedule options

SCHEDULE: Personalize programming in 7 day, 5-1-1 day, 5-2 day or 1 week options - there's even a non-programmable option

EXPERIENCE: A large screen and clear font enhance daily use

INSTALLATION: The Honeywell Home UWP wall plate provides an easy install process and simplifies future device upgrades

FEATURES: Flexible scheduling, backlit display, custom display settings, change filter reminder, extended 32°F low-heat setpoint, 1-year warranty

COMPABILITY: 1 Heat/1 Cool, 750 mV, hot water heat, forced air (gas, oil, or electric) [does not work with electric baseboard heat (120-240V)]

POWER: 2 AA batteries (not included)

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Product Details

SKU:: awhd-us-b0dsgf9gdj
Model:: RTH21B
Country:: US
ASIN:: B0DSGF9GDJ
GTIN:: 40194159017366
UPC:: 194159017368

Shopping Smarter

Common questions about buying open-box and refurbished.

Why buy refurbished or open-box?

Refurbished and open-box products offer the same performance as new at a fraction of the price. You're already saving $34 on this listing. They've been inspected, tested, and are ready to use — the only difference is the price tag. Buying refurbished also reduces electronic waste, extending product life cycles and keeping functional devices out of landfills.

What's the difference between open-box and refurbished?

Open-box products are customer returns that have been inspected and confirmed functional. They may show little to no use — often the item was returned simply because the buyer changed their mind. Refurbished products have been professionally repaired or restored by technicians, tested to meet or exceed manufacturer specifications, and sometimes come with a warranty. Both are a smart alternative to buying new.

Why use OpenBoxFox?

Finding refurbished deals is time-consuming — you'd have to check Amazon Warehouse, Reebelo, Dyson Outlet, and others separately for Honeywell Home products. OpenBoxFox aggregates these listings in one place, so you can compare and find the best deal without the legwork. We update pricing daily so you always see current availability and real savings.

Is it safe to buy refurbished?

Yes. Products listed on OpenBoxFox come from established retailers like Amazon, Reebelo, and Dyson — not unknown third-party sellers. Each retailer has buyer protection policies, return windows, and in some cases warranties. You get the price advantage of used goods with the purchase security of a known retailer.