Lux Pro Programmable Thermostat for Home Use; 1 Heat, 1 Cool, Model PSP511LC, 5-2 Day with Backlight

works great. You can adjust the swing time (how much you want the temp to drop before it turns on and off). It comes set to 1, which is the most steady temp but turns on and off a lot more and you can go all the way up to 9 which will let the temp drop a few degrees before it turns on agin but also goes over the set temp a few degrees before it shuts off. I hope this one lasts more then a few years.

Lux programmable thermostat. This is probably the easiest to program thermostat on the market. Installation is easy and it works right out of the box. Very reliable. Change the batteries every year or so and you're good to go.

Purchased this to replace an older, faulty thermostat of a differing brand. Installation and programming were very simple and straight forward. The directions in the packaging, regarding wiring and operation were very clear and easy to follow. I was up and running in less than 30 minutes. It's only been a few days, but the thermostat appears to be running flawlessly and, this could just be placebo effect, but my furnace appears to be functioning better as a result of this unit (more consistent, warmer air being produced) The Cons: The furnace filter feature is useless. Even if you change your filter regularly (which I always do!), but forget to change the settings in the thermostat to indicate you've changed it, the thermostat will stop working (to my understanding based on youtube reviews) until you reset the filter setting. What if you're away from home for a few days? Are your pipes going to freeze because you thermostat thinks your filter is dirty? How stupid! The swing setting is pointless. This is my fault for misunderstanding how it works, but I thought the swing setting just allowed the temp to dip a little lower in your home before telling the furnace to kick on, bringing the temp up to the desired programmed temperature. But it doesn't do that. Yes, it allows you to let the temp drop a little extra, BUT, when the furnace kicks on, it also raises the temperature an equal amount ABOVE the programmed temperature setting. For example. I have my thermostat programmed for heat at 63 degrees F. If I set the swing for 2 degrees, the thermostat kicks on at 61 degrees (as I want it to) but doesn't kick OFF until the home temperature reaches 65 degrees. Uhhhh, wut?????? No, bish, I want you to kick off at 63. THAT'S WHY I HAVE IT SET TO 63!!!!!!!!!! If I wanted you to kick off at 65, I would program the unit to kick off at 65. Thus, I find this feature pointless, as it just causes the furnace to run for a longer duration when it does kick on, negating any advantage of a wider temp drop. Finally, the face plate. An extra $10 for the cosmetic face plate? That's insulting. It's a little piece of plastic and you want $10 extra for that? It should be included. You can keep it! I deducted a star for this, the swing setting, and the furnace filter pointlessness. Other than these minor flaws, it's a nice, affordable programmable thermostat that is a little bit nicer than your bottom of the line Honeywell and other brands you would find at your local wally world.

Perfect replacement for the original which lasted two months shy of 22 years.

Works perfect for gas fireplace, replaced very old thermostat. install was simple and fast

It’s so easy to program so you don’t have to worry about it. Just wish that it had the ability to program for heat and cool separately.

Replaced the old Lux thermostat after 29 years with this new one. It us super easy to install, easy to program, and works excellent.

Nice thermostat - easy to install - easy to program - works well - we have two heaters so I bought two of these and replaced two old thermostats at the same time. Both thermostats were installed new in October 2022 utilizing the batteries that came with them. In March 2023 one furnace quit working. I had a technician come out (for $180) to check the furnace. He found the furnace to be working properly but advised me the thermostat was bad. Looking at the screen of the thermostat it appeared to be functioning properly, but apparently was not turning on the furnace. These thermostats have a base they plug into. It was easy to swap thermostats and the nonworking furnace began to work (should have done that first). Using an inexpensive battery tester that rates batteries "good, questionable or dead" I tested the batteries in the nonworking thermostat and found the batteries rated as "good". In spite of that I went ahead and changed the batteries out for new ones and the nonworking thermostat again began functioning properly. A month later it is still working. Bottom line - I really like this thermostat - Except it is very disappointing that a battery could be the issue without an error code or some indication of a bad/low battery being reported on the thermostat screen.

I've had numerous t-stats over the years and the only brand I've come to trust is Lux. This one is replacing another brand for my gas furnace and I have one more Lux that has been controlling a 70,000 BTU gas fireplace the last 11 years. I researched many t-stats under $Can50 before this one and I can tell you if you want to control a furnace, this t-stat has the absolute minimum features you need. From my experience with this t-stat and my other one, I can tell the team who worked on this t-stat put a lot of thought into it; their passion is reflected in the final product including the manual. I'm listing here, in no particular order, some of the features that in my opinion are key: a. you can easily configure 4 time periods for Mon-Fri and another 4 time periods for Sat & Sun. b. it has a very important feature called a swing setting. The swing setting controls the temperature hysteresis which in turn affects how often the furnace will turn on and hence how tightly the temperature is controlled. If you are sensitive to temperature swings, you may want to set a lower number but your furnace will now cycle more often. If you are less sensitive, set to a higher number for a lower duty cycle. Unfortunately the otherwise excellent manual is missing information on the hysteresis increments so I'm including them below. c. to change the display from the factory default of ° F to ° C, change the jumper shown in the manual AND do a hardware reset. Anytime you change the jumpers, you must do a hardware reset so the micro-controller can read the new settings. d. the display is back-lit e. it's very easy to install Although I've given it 5 stars and a glowing review, the following features would make it an absolute knock-out against which all other t-stats should be judged: 1. a pre-comfort recovery that will activate the heating or cooling in advance of the actual set program time so that the environment will be at the desired temperature at the start of the configured time. 2. a usage monitor that tracks the on time for today and for the week. 3. 0.5° C resolution because some of us are more comfortable at 21.5° C instead of 21° C or 22° C. 4. humidifier control 5. a constantly visible set-point - Swing settings and corresponding hysteresis increments - #1= +\- 0.25° F or 0.12° C (from Set Temperature) #2= +\- 0.50° F or 0.24° C (from Set Temperature) #3= +\- 0.75° F or 0.36° C (from Set Temperature) #4= +\- 1.00° F or 0.48° C (from Set Temperature) #5= +\- 1.25° F or 0.60° C (from Set Temperature) #6= +\- 1.50° F or 0.72° C (from Set Temperature) #7= +\- 1.75° F or 0.84° C (from Set Temperature) #8= +\- 2.00° F or 0.96° C (from Set Temperature) #9= +\- 2.25° F or 1.18° C (from Set Temperature) Example: For tightest control, set swing setting on #1 which is plus or minus 0.12° C. For a set-point of 21° C, the furnace will turn on at 20.88° C and off at 21.12° C.

I've had this installed for over a year now. I love it. Really good deal with all of the features I want/need for the price. The features I use: - It can display in either Fahrenheit or Celsius, and I set mine to Celsius being a Canadian - It has both Weekday and Weekend programming - For either the Weekday (Monday-Friday) or Weekend (Sat & Sun) programming, you can set what the temperature should be for FOUR times throughout the day. - You can set a desired tolerance before furnace/air conditioning kicks in again. I set my tolerance at 2 degrees. So if my internal temperature is set to 20C, it will get down to 18C before the furnace kicks on again. You can set this tolerance to a fraction of a degree. Very handy. - The 'override' function, which temporarily sets the temperature to higher or lower than what you had auto-programmed it to. ie, if you have company and they're perpetually cold, just hit the up button a few times to set the temperature higher. The override temperature will disable when you either, a) turn the temperature down again, b) when the next programmed time/temperature occurs. So if you forget that you had raised the temperature, but have it set to be turned down to a specific temperature at 9pm, at 9pm your override would be moot and the unit would return to it's normal programming. That's really all I need and use. It's been great.

I bought this unit to replace a 5-1-1 programmable unit we had in our hour for a forced air gas furnace. Installation was super easy (10min + temperature settings for program). This unit was a bit smaller than our previous unit so I've got some touch ups to do on the paint around it. I bought this unit primarily because it was programmable, inexpensive and most importantly had the ability to set a swing setting for when the furnace comes on. Our furnace was coming on for brief periods then turning off after a few minutes. Then it would repeat that again in another 5 minutes. Very bad for the motor and blower unit on the furnace. The swing setting has allowed me to reduce this "on-off-on-off" for the furnace significantly. Why I have it 4 stars instead of 5 was the factory thermostat readings were off and it does NOT show the current temperature in the house on the display. Plus the temperature can only be set to the closest degree no half degree like our old unit. Overall it is a solid little unit that is easy to read, set up and install. Plus it helps extend the life of your furnace other the swing setting. Would recommend it for its price but if I was to do it again I'd go for the Lux's 7 day programmable as it shows the current temp and gives more flexibility for programming.

I'm in a unique situation, running my pellet stove off of a programmable thermostat. I bought a Honeywell, but returned it due to lack of swing setting. I picked up this Luxpro model, and with the swing setting at 9, I can set the thermostat to 67 and it will run until it just hits 70, and then it will shut down until it just hits 64, and kick back on to 70. It's PERFECT. It's made my pellet stove so much more efficient. Highly recommended for anyone in a similar situation. I've read about problems with other Lux units failing when the batteries need to be replaced, so I'm hoping the Pro version will avoid that.

Comes with labels to make wiring simple! Unit is fairly intuitive, however setting the incremental adjustments of 0.25 degrees requires reading the manual. 4 periods of time can be set per day on the 5 day weekday program and on the 2 day weekend program. Has a filter replacement reminder you can set if desired. Screen illuminates when a button is touched and then turns off after a few seconds. I've had the until installed and operational for many months now, operating the furnace and the A/C without any issues. An excellent programable thermostat!