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Honeywell Home RTH20B Programmable Thermostat: 5-2 day scheduling
This Honeywell Home thermostat is for the homeowner who wants simple, reliable climate control without a monthly subscription. While many focus on smart features, this model excels at providing consistent comfort through a predictable schedule, perfect for managing your family's weekday routine and weekend relaxation.
You can program separate settings for weekdays and weekends. The large backlit screen is easy to read from across the room, even in low light. It replaces older models like the RTH2300 directly, and the included wall plate makes installation straightforward. Use it with forced air systems, but note it is not compatible with electric baseboard heat. Features like a filter reminder help maintain your HVAC system efficiently. It runs on 2 AA batteries, ensuring operation during power outages.
Features
- 1 Heat/1 Cool compatibility
- backlit display
- change filter reminder
- extended 32°F low-heat setpoint
- easy installation with wall plate
- 5-2 day scheduling
General specs
- Brand: Honeywell Home
- Model: RTH20B
- Seller: Amazon
- ID: B0DSGGDCR8
- Dimensions: 8, 6, 0.84
- Scheduling: 5-2 Day
- Display Type: LCD
- Power Source: Battery
- Mounting Type: Wall Mount
- Control Methods: Buttons
- Compatible Systems: Air Conditioner, Electric Boiler, Gas Boiler, Water Heating
- First listed by seller: February 2, 2026
If you are interested in more details, you can find full information on the seller's page.
Amazon live offers
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Top live offer is the offer currently shown first for this Amazon listing. It may differ from the lowest available price.
FBA means the order is fulfilled by Amazon, even when the seller is a third-party merchant.
Shippable means the offer is listed as available for delivery on Amazon.
New, Used and Refurbished describe the item condition shown for that Amazon offer.
Top live offer
€32.41
Free shipping
New
Sold by Amazon
FBA
Shippable
New from
€31.07
Only from New + Shippable live offers
Used from
€20.34
Only from Used + Shippable live offers
New offers
Sold by Amazon
· FBA · Shippable
€32.41
Third-party seller
· FBA · Shippable
€31.07
Third-party seller
· FBA · Shippable
€32.41
Third-party seller
· Shippable
€37.84
Third-party seller
· Shippable
€37.87
Third-party seller
· Shippable
€38.22
Third-party seller
· Shippable
€41.28
Third-party seller
· Shippable
€42.57
Third-party seller
· Shippable
€42.75
+ €3.87 shipping
Third-party seller
· Shippable
€43.09
Third-party seller
· Shippable
€45.79
Third-party seller
· Shippable
€46.38
Third-party seller
· Shippable
€46.80
Third-party seller
· Shippable
€47.69
Third-party seller
· Shippable
€50.35
+ €9.16 shipping
Third-party seller
· Shippable
€50.36
Third-party seller
· Shippable
€51.53
Third-party seller
· FBA · Shippable
€57.52
Third-party seller
· Shippable
€57.52
Used offers
Used - Acceptable
· Third-party seller
· FBA · Shippable
€20.34
Used - Like New
· Third-party seller
· FBA · Shippable
€24.10
Used - Like New
· Third-party seller
· FBA · Shippable
€24.55
Used - Like New
· Third-party seller
· FBA · Shippable
€25.82
Used - Acceptable
· Third-party seller
· FBA · Shippable
€25.83
Used - Very Good
· Third-party seller
· FBA · Shippable
€27.40
Used - Like New
· Third-party seller
· Shippable
€34.43
Used - Good
· Third-party seller
· FBA · Shippable
€20.80
Used - Very Good
· Third-party seller
· FBA · Shippable
€21.04
Used - Like New
· Third-party seller
· FBA · Shippable
€27.40
Used - Like New
· Third-party seller
· FBA · Shippable
€32.73
Used - Like New
· Third-party seller
· FBA · Shippable
€21.27
Offers updated: 9/1/26
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Price History for seller Amazon
Shipping options
Delivery to 
United States
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Available
Similar products comparison
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
Honeywell Home RTH20B White 5-2 day scheduling
|
Honeywell Home RTH21B White
|
Riseem STN701W-Blue Blue
|
Programmable Thermostat 2 Heat / 2 Cool multi-stage
|
Programmable Auto Changeover Thermostat Compatible with single-stage systems
|
Programmable Thermostat for Heat Pump High compatibility with heat pump systems
|
|
| Brand | Honeywell Home | Honeywell Home | Riseem | Coiiwsei | Coiiwsei | Riseem |
| Model | RTH20B | RTH21B | STN701W-Blue | |||
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| Price | €32.41 | €43.04 | €34.43 | €28.40 | €40.46 | €20.65 |
| Seller | Amazon | Amazon | Amazon | Amazon | Amazon | Amazon |
| Update | Jun 24, 2026 | May 11, 2026 | Jun 24, 2026 | May 29, 2026 | May 29, 2026 | May 20, 2026 |
| Dimensions | 8, 6, 0.84 | 6.5, 1.6, 8.55 | 0.98, 3.86, 4.72 | |||
| Scheduling | 5-2 Day | 7-Day, Weekly | 7-Day | |||
| Display Type | LCD | LCD | Extra large backlight LCD | |||
| Power Source | Battery | Battery | Hardwired | |||
| Mounting Type | Wall Mount | Wall Mount | Wall Mount | |||
| Control Methods | Buttons | Buttons | App, Buttons | |||
| Compatible Systems | Air Conditioner, Electric Boiler, Gas Boiler, Water Heating | Air Conditioner, Gas Boiler, Water Heating | Air Conditioner, Gas Boiler | Forced air (gas, oil or electric), Electric furnace, Hot water steam or gravity radiant heat, Heat only systems, Heat pump w/o auxiliary or emergency heat, Millivolt, Gas fireplaces (24V), Floor or wall furnaces, Cool only systems | Heat pump multi-stage systems, Conventional single-stage systems, Forced air (gas, oil or electric), Electric furnace, Hot water steam or gravity radiant heat, Heat only systems, Heat pump w/o or with auxiliary or emergency heat, Millivolt conventional systems, Gas fireplaces (24V), Floor or wall furnaces, Cool only systems | |
Honeywell Home RTH20B White 5-2 day scheduling
€32.41
Affiliate link. As an Amazon Associate I earn from qualifying purchases.
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