Honeywell RTH221B Basic Programmable Thermostat

by Honeywell

Product Description

Amazon.com Product Description

Offering the ease and reliability of basic programming, the Honeywell RTH221B One-Week Programmable Thermostat can help save money on your energy bills--without sacrificing your comfort. Featuring a sleek one-piece design that blends seamlessly with any decor, the RTH221B is compatible with most heating and cooling systems.

RTH221B One-Week Programmable Thermostat At a Glance: Basic operation keeps programming easy 4 program periods per day Precise temperature control of + /- 1 degree For use with central gas, oil, or electric furnaces and AC 1-year warranty

Using a programmable thermostat is one of the easiest ways to reduce energy costs.

Precise, Programmable Temperature Control
The RTH221B lets you control the temperature inside your home, even when you're not there. In just minutes, you can create one simple program that will run for the entire week, with up to four program periods per day (wake, leave, return, and sleep).

For further convenience, the RTH221B gives you precise temperature control plus or minus one degree Fahrenheit, so you can create the atmosphere that's perfect for you.

Save up to 33% on Annual Heating Costs
Using a programmable thermostat is one of the easiest and least expensive ways to reduce energy costs and protect the planet--without sacrificing personal comfort.

By creating a program that automatically adjusts the temperature during times when optimum comfort is not necessary (e.g. when you're sleeping or away from home), you can significantly cut down on your overall energy usage and reduce your monthly bills. In fact, depending on your geographic region and usage patterns, the RTH221B can help you save up to 33% on annual heating costs.

User-Friendly, One-Piece Design
One of the RTH221B's key advantages is its user-friendly, one-piece design. All control buttons are visible on the front of the unit for quick and easy accessibility, and the display clearly shows current and set temperatures. Soft-touch/one-touch hold buttons keep things simple, while vertical positioning makes for an easy upgrade from standard manual thermostats.

Compatibility and Warranty Information
The RTH221B works with central gas, oil or electric furnaces, AC, and millivolt systems. It is not compatible with multi-stage heating/cooling systems, heat-pump systems, or electric baseboard heat (120 - 240 volts).

The Honeywell RTH221B One-Week Programmable Thermostat and is backed by a one-year warranty.

What's in the Box
Honeywell RTH221B One-Week Programmable Thermostat; mounting hardware; warranty card; and manual.

COMPATIBILITY
24-VOLT HEATING AND AIR CONDITIONING SYSTEMS
Single-Stage Heating and Cooling		Multistage Heating and Cooling
Heating Only		Cooling Only
Furnace (Warm Air)		Central Air Conditioning
Heat Pump without Auxiliary Heat		Heat Pump with Auxiliary Heat
Hot Water		Steam or Gravity
750 Millivolt		Gas Fireplaces (24 Volt or 750 Millivolt)
Electric Baseboard Heat (120 - 240 Volts)

From the Manufacturer

A Honeywell programmable thermostat can save you significant money off your energy bill. You set it up to adjust the temperature when you are away or asleep---times when you don’t necessarily need to heat or cool your home to optimum comfort---and your heating and cooling equipment runs less. This one-piece thermostat has one easy program for all days of the week (4 periods - wake, leave, return, sleep). Simple and effective use and performance.

Product Details

• Product Dimensions: 1.8 x 6.5 x 8.8 inches
• Shipping Weight: 8 ounces (View shipping rates and policies)
• Shipping: This item is also available for shipping to select countries outside the U.S.
• ASIN: B000WEKNOW
• Item model number: RTH221B
• Average Customer Review: 4.0 out of 5 stars  See all reviews (102 customer reviews)
• Amazon Best Sellers Rank: #809 in Home Improvement (See Top 100 in Home Improvement)
  • #5 in Home Improvement > Building Supplies > Heating & Cooling > Thermostats & Accessories > Thermostats > Programmable

Customer Reviews

Most Helpful Customer Reviews

74 of 77 people found the following review helpful:

5.0 out of 5 stars A good simple thermostat, December 20, 2007

By 

Miles H. Kennedy (Cleveland, Ohio) - See all my reviews
(REAL NAME)   

Amazon Verified Purchase

This review is from: Honeywell RTH221B Basic Programmable Thermostat (Tools & Home Improvement)

My wife and I are both retired so every day is a 'weekend day'. Most thermostats require multiple settings for different kinds of days. Good idea if you're a worker but bad idea if you're me since going on vacation etc requires MULTIPLE thermostat adjustments. Also, why pay extra for annoying unused features. This thermostat is simple, easy to install and has typical Honeywell accuracy and reliability. For me it's ideal.

40 of 40 people found the following review helpful:

5.0 out of 5 stars Works well, July 6, 2008

By 

D. J. Tanzer "Taz" (Phoenix, AZ USA) - See all my reviews
(REAL NAME)   

This review is from: Honeywell RTH221B Basic Programmable Thermostat (Tools & Home Improvement)

Basic programable t-stat. Works well, easy to install Honeywell is a good brand. **HOWEVER in picture on amazon the screen on it looks back-lit, but it is not lit.

44 of 45 people found the following review helpful:

5.0 out of 5 stars Best money I've spent in a long time, March 16, 2009

By 

Nature Gal (Illinois) - See all my reviews

This review is from: Honeywell RTH221B Basic Programmable Thermostat (Tools & Home Improvement)

I bought this thermostat this fall from a big box home improvement store and it's paid for itself several times over in a few short months (and I paid more than the listing price on Amazon).

I had never installed a thermostat before, but it was a breeze to install. I turned off the breakers to my living room, carefully removed the old thermostat, attached two wires, installed a couple of screws (I think that I ended up drilling one new hole), and turned the power back on. Less than 15 minutes from start to finish, and I'm not the handiest gal you'll ever meet. It worked. I set it to turn down at night while we're sleeping and during the day when we're gone. I also put the plastic on the windows, but other than the new thermostat I did nothing different this year than last.

February 2008- the portion of our utility bill for natural gas was $188.03. February 2009, with the average temperature just 4 degrees warmer, our natural gas bill was $88.08. We have saved at least $40 every month since I installed it. It's paid for itself several times over. It's probably the best thing I've purchased in a very long time.