Top Lux Products TX1500E Smart Temp Programmable Thermostat review

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Product Feature

• Display illuminates with a touch of a button
• On-screen programming
• 12/24 hour clock
• Weekday, Saturday and Sunday can be different
• Filter usage monitor

Product Description

Product Detail

• Amazon Sales Rank: #17747 in Home Improvement
• Color: White
• Brand: Lux
• Model: TX1500E
• Number of items: 1
• Dimensions: 10.50" h x8.00" w x1.25" l,.61 pounds

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GAS or DURACELL JP7 FAN ELECRIC 52007 - Lux Products
© COPYRIGHT 2006 LUX PRODUCTS CORPORATION. thermostats are used in the same home. To change the Temperature Calibration, TX1500E Programmable Thermostat
Lux Products TX1500E Smart Temp Programmable Thermostat
Lux Products TX1500E Smart Temp Programmable Thermostat, From Lux, Price: $47.20

Product Reviews

267 of 270 people found the following review helpful.
Lux Products 1500E Thermostat
By G. P. Stern
Lux Products TX1500E Smart Temp Programmable Thermostat

After researching thermostats, I replaced my builder-grade 1 week thermostats with a couple of Lux 1500E units. This was one of Consumer Reports' best buy models from last year (the other also a Lux). Additionally, I liked Lux's programming dial which simplifies programming; with the dial, there are fewer arcane button press combinations to deal with. Installation was simple and straightforward. The display on the 1500E is fairly large and has an electroluminescent back light that's activated by pressing any button. I'm farsighted but can read the display without my glasses. The 1500E is a 5-1-1 thermostat but also includes a "special" schedule that can used for vacation or holiday making this a 5-1-1-1 thermostat.

I found programming to be quick and simple and the unit works as advertised. I have one complaint and one quirk to mention. The complaint: The operating instructions aren't the best. In particular, there is precious little explanation of the "swing" function or what the swing numbers actually mean. I sent an email to Lux and received a phone call the next day with a thorough explanation. Fantastic customer service!! For the record, the swing setting numbers correlate to quarter degrees (the instructions should state this but don't). The default setting is 1 meaning the thermostat will cycle when the temperature deviates .25 degrees. Keeps the house temperature constant but heat or AC will constantly cycle. Setting the swing to 4 will cause heat or AC to turn on when temperature deviates 1 degree (4 X .25) from the set temperature. You can set the swing up to a value of 9 (2.25 degrees). Here's the quirk part: with my old thermostat, if I set the temperature to 69, the heat would turn on when the displayed temperature dropped to 68 and turn off when the displayed temperature rose to 70. The 1500E, with a swing setting of 4, doesn't work quite the same way. Even though displayed temp is 68, heat won't come on right away. It's almost as if the thermometer controlling the display isn't the same one controlling the thermostat itself. Either that, or a swing setting of 4 is working differently than I'm expecting. Please note, I do not find this a problem with the 1500E, just a little odd. Also note: most instructions accompanying thermostats are lacking.

Overall, I am very pleased with the Lux 1500E. It feels well built, has a nice display, and a competitive price. Add Lux's great customer support, and I'd highly recommend it.

153 of 155 people found the following review helpful.
Needs calibration to ensure temp accuracy
By slinkywizard
I ordered three Lux TX1500E thermostats. Before installing I tested them for accuracy by placing all three Lux thermostats side by side, and comparing the temperature and humidity readings with two additional thermostats and hygrometers I know to be accurate.

All three Lux units displayed different temperatures from each other. One of the three units was accurate. The temperature is easy to calibrate by setting the dial to run mode, and while holding the up button, pressing the down button once. A screen pops up allowing the temp to be set plus or minus five degrees. In this case the temperature on one of the units was 2 degrees high, so I entered -2 on the calibration, and since calibrating the temperature readings have been accurate.

The humidity readings for all three units were initially off by up to 7 percentage points. The unit allows for calibration up to +/- 15 percentage points by setting the dial to run, pressing the H button, and while holding down the up button, pressing the down button once. After calibrating the units, they are still off by a couple percent, and occasionally display a ridiculous reading like 95% relative humidity (RH) when the actual RH is 50-60%, but for the most part the RH is close enough.

The humidity reading on the unit does not display automatically. The "H" button must be pushed to display relative humidity. To clarify, the thermostat runs off temperature only, i.e. there isn't an option to run the air conditioner until the relative humidity reaches a certain level.

The display on the unit is puzzling. On the left the time is displayed prominently, and in a much smaller font the temperature displays on the right. A more helpful display would be: Actual temp, Set temp, and actual humidity all in large lettering, and then the time somewhere off in a corner.

The reason I bought a programmable thermostat is for the swing function. My old thermostat would constantly cycle the a/c (on for only 5 minutes at a time) because it was turning on the unit when the temp hit 79.25 degrees and turning it off when it hit 78.75. This 1) damages the a/c equipment, and 2) does not allow the a/c units to run long enough for effective dehumidification to occur, since the a/c doesn't really start to dehumidify effectively until it has been on for at least 10-15 minutes. Without proper dehumidification, the house feels warmer than it is (i.e. it's not the heat, it's the humidity).

This Lux thermostat has a default swing function of 1, which means that if you set the thermostat on 79, it will turn on the a/c at 79.25 and turn it off at 78.75 degrees. The swing function can be set between 1 and 9. Using a 79 degree setting, a swing value of 4 means the a/c will turn on at 80 degrees and turn off at 78 degrees. A swing value of 8 means the a/c will turn on at 81 degrees and turn off at 77 degrees. I don't understand why the default swing is at 1 (i.e. .25 degrees). A setting of at least 4 (i.e. 1 degree) seems prudent for the health of the a/c equipment and humidity control.

Moving on, I purchased this Lux unit instead of a Honeywell because 1) Consumer Reports gave the highest rating of all tested thermostats to the Lux TX1500E, which rated much higher than the Honeywell units, 2) These are $40 vs. over $100 for the Honeywell units, and 3)I called tech support for both Honeywell and Lux. Honeywell routes you to an overseas call center staffed by people who barely speak English. Lux has a call back system, but they called back within two hours, and the guy I spoke with was intelligent and located in the U.S.

Before purchasing I also considered the Lux TX9000TS, which is a touch screen thermostat that received Consumer Reports' second highest rating, right behind this unit. I purchased the TX1500E instead because 1) better pricing, 2) I read the 1-star reviews on Amazon for both products, and the TX9000TS seemed to have more problems than the TX1500E, and 3) The manual dial/arrow key set on the TX1500E is more intuitive for me to navigate than a touch screen.

I found programming the thermostat to be easy, although a little tedious, as the program settings must be entered 4 times (once for weekdays, once for Saturday, once for Sunday, and last for Special Programs).

One feature I'm not thrilled with is the fan setting. The fan can be set on "auto", meaning it runs only when the a/c or furnace runs. The other fan setting is "on" meaning it runs continuously (potentially causing some major humidity problems during the cooling season in a hot/humid climate). What I would like to have seen is a "circulate" option for the fan, meaning if the a/c or furnace hasn't kicked on in the past 30 minutes, the fan will circulate the air for 5-10 minutes in order to improve indoor air quality.

With a fan setting of "on", let's say the a/c has run for 20 minutes and the a/c coil now has water dripping off it. If the fan keeps running without a/c, much of that condensed water on the coil is going to re-evaporate into the air that the fan is blowing over it, which will raise humidity, partially defeating one of the two functions of air conditioning (lower temp and lower humidity). At least this is what happens in humid climates such as Houston where I'm located. A "circulate" function on the thermostat would avoid this problem.

38 of 40 people found the following review helpful.
Does just what it's supposed to do.
By Frank G. Costley Jr.
Replaced a Hunter thermostat which drove us crazy because it did what it wanted to do rather than what I wanted it to do. It was difficult to program and unecessarily complicated compared to the LUX. The LUX was easy to install and hasn't missed a beat since I put it in. Consumer Reports rated it a best buy.