Filtrete 7-Day Programmable Thermostat-3M-22 - The Home Depot


Model # 3M-22

Internet # 202352452

7-Day Programmable Thermostat

Filtrete 7-Day Programmable Thermostat

This item has been discontinued.
The Home Depot no longer carries this specific product.

$44.88 / each
  • Can be programmed with up to 4 independent periods per day
  • Copy function makes programming a breeze
  • On-screen filter-change and low-battery indicators


Model # 3M-22

Internet # 202352452

The 3M Filtrete 7-Day programmable thermostat offers versatile and easy programming to maximize your comfort and energy efficiency. The pre-set programming can be easily modified to suit your schedule and comfort level, with many options to conveniently accommodate temporary schedule changes and vacation time. It is compatible with systems including 1 and 2-stage heat and cooling, heat pumps with or without auxiliary heat, zoned baffle systems and 2 and 3-wire hot-water heaters.

  • 7-day programming gives you the flexibility to program for maximum comfort and energy savings
  • Compatible with standard residential heating and cooling systems, 2 or 3-wire boilers, heat pumps and 2-stage heating systems
  • Display shows room temperature and target temperature simultaneously
  • Override, hold and vacation functions give maximum flexibility to adjust for changing schedules
  • Program lock can be engaged to prevent others from changing the settings
  • Compatible with all popular residential central heating and cooling systems

Info & Guides

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Assembled Depth (in.)  .9 in  Assembled Height (in.)  3.2 in 
Assembled Width (in.)  5.8 in  Display height (in.)  .8 
Display width (in.)  1.4  Product Depth (in.)  .9 
Product Height (ft.)  3.2  Product Width (in.)  5.8 in 
Batteries Included  No  Battery Power Type  Alkaline 
Battery Size  AAA  Color Family  Whites 
Number of HVAC Zones  Periods per Programmable Day 
Returnable  90-Day  Shape  Rectangle 
System Compatible  Universal  Thermostat Features  Backlit,Battery Back-Up,Battery Operated,Filter Monitor,Lockable,Low Battery Indicator,Vacation Mode 
Thermostat Type  Heating and Cooling  Voltage (volts)  24 
Warranty / Certifications
Certifications and Listings  No Certifications or Listings  ENERGY STAR Certified  No 
Manufacturer Warranty  5 year limited manufacturer warranty 


Rated 3.6 out of 5 by 109 reviewers.
Rated 5.0 out of 5.0 by Great digital thermostat! This products works great. Setup is easy. Just followed the instructions as stated in the manual. You're able to have different temperature settings for each day and 4 time periods per day. Product design is different than the image shown in the home depot webpage. Now it has the buttons covered which gives it a cleaner look. Overall this is a great product! March 26, 2014
Rated 2.0 out of 5.0 by Looks cool and cheap, but bad side finish. First of all, the picture shown at home depot website is outdated. New model does not have cover over buttons and buttons look very different. Check picture from their website. I want to give link to it, but home depot rejected my review for wiring URL. At first impression this thermostat looked cool with blue back-light. However, having so many buttons exposed make it look very complicated. Also, sides do not have cover and you can see a deep voids on each side of thermostat. It looks very ugly from sides. On the top, you can actually see wires entering thermostat because there is nothing covering it. June 14, 2011
Rated 4.0 out of 5.0 by An affordable programmable This is a big improvement over my standard thermostat, which you could not program. It has 4 settings per day, morning, day, evening and night. Once you set one day, you can copy to a single or multiple days. If you can read instructions, it isn't that hard to program. It has instructions and labels to install also, but I hired a handyman/electrician to install, as this is not the time of year to be without A/C in FL, and I am not the most adept at electrical issues. August 5, 2014
Rated 1.0 out of 5.0 by Most frustrating thermostat I've ever used So frustrating to use. I have three in my house for the different heating zones. Trying to change program is always a frustration. Trying to set the Program 2 for vacation is totally frustrating. One of the most annoying features is that after programming and then pressing "Home" to confirm, it goes into dark mode and will not revive for about a minute. Just when you want to check if the program "took," it will not respond. Really, with the level of digital technology we have today, this thing is an outmoded POJ. I've had these in my house for 2.5 years now. Mostly I just let them be. Someday I will replace with something more functional. November 9, 2014
Rated 2.0 out of 5.0 by Died after a year and a half Good thing Home Depot has a 5 year warranty on this product. Mine died after a year and a half - no display, no lights, nothing. Put on fresh batteries and verified the voltage at the main board. Still no go. Otherwise it worked well. July 19, 2014
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