Best 5 Millivolt Thermostat Models For Sale In 2022 Reviews
The thermostat is a device that is designed in a way to keep the room temperature on the desired set point and it is a part of the heating and cooling system. There are three main types of thermostat systems that are in use these days. They are low-voltage, line-voltage and millivolt thermostat system.
Since we are going to talk more about millivolt thermostats let’s start with explaining what is a millivolt thermostat system. Millivolt systems need special kind of thermostat and it won’t work with standard low-voltage kind of thermostat. Their use is not common these days and they will be primarily used in direct- or top-vent wall furnaces, gravity wall furnaces, mobile home direct-vent wall furnaces or gas-fired heaters that don’t use electricity because they don’t have a blower fan. Most are used for supplemental heat or space heating.
Millivolt thermostats use very low voltage, 750 mV (0.75 V) and they do not require a step-down transformer. The reason for that is simple; they aren’t part of the wiring system. Thermostats have a special thermopile generator built-in that produces direct current electricity and it powers the device.
Now, with that being explained we can focus on millivolt thermostats. Of course, you will use millivolt thermostats if you have a millivolt power system installed in your household. There are plenty of possibilities on the market and we have chosen for you 5 best products in the category.
The TX9600TS thermostat is compatiblewithmost heating and cooling systems (single stage heat pumps and heat pumps with Aux/emergency heat), 750 millivolt systems (wall heaters, gas fireplaces) and 2 or 3 wire hydronic systems (hot water baseboard and radiator). The thermostat is not compatible with electric baseboard heat and systems with 2 cooling stages. It comes with different kinds of wires to ease installation and to make the thermostat truly universal.
It is extremely easy to install, it comes with printed instructions or you can download them from the website. It has large, blue lighted easy-to-read touch screen display and it is menu driven which makes TX9600TS simple to operate and to program. Every day of the week can be programmed separately and differently with 2 to 4 different user periods available to select from. You can also copy one programmed day to the next one. It also has a Vacation mode which can last from 1 to 30 days. You can also monitor the running hours of your air filter in order of knowing when to change it. Another useful feature is PIN locking the keyboard to prevent unwanted usage.
2 AA batteries are required for the TX9600TS thermostat to work and they are not included with the device. Average life span of batteries is 1 year so it is recommended to change them at the beginning of the heating season. Some customers managed to wire it and by doing so they avoided the use of batteries. Some of them also noticed that the readings on the thermostat slightly differ when it is wired compared to the battery use. Use of the batteries is highly suggested. It has Swing option built-in which allows setting the temperature interval in which the thermostat won’t start any action, start or stop the furnace or cooling devices.
Features:
White colour
Dimensions are 5.38” x 1.12” x 3.38”
Needs battery
You can program it
Digital display
Orbit Clear Comfort Pro Thermostat 83521
Orbit 83521 thermostat is one-stage thermostat which will work with gas, oil or electric furnaces, 750 millivolt systems, central air conditioners, heating and cooling systems and heat pumps without auxiliary/backup heat. This thermostat won’t work with base board heaters, multistage heating or cooling systems etc. Thermostat is powered by 3 AAA batteries which are sold separately. Thermostat is mercury-free which makes it a safe choice for your home.
It comes in white colour with large easy-to-read backlit LCD display. Interface is covered with transparent faceplate which gives it a modern design. The device is easy to install and easy to program with a few switches on the interface of the device. You can program it for 7 days of the week individually with the option of even 4 periods a day. Also, you can copy the settings from one day and just paste it into the others. Orbit 83521 allows you to have the control of your comfort and to save your money and energy. Orbit thermostat is also Energy Star certified and it comes preprogrammed and ready-to-use settings and if you use recommended settings you might save up to 33% on your bills.
It does not have Swing option built-in. And for that reason, it senses the slight temperature changes (1 ℉) and starts short 30-45 seconds cycles for the heating or cooling unit. It has Early Start option which allows you to have the heath before the programmed time. According to the user manual, the thermostat has the ability to learn the best cycle times for your system. They give a table in the manual for common cycle periods and changing the minimum cycle period to 6 minutes or more enables smart logic.
Features:
White colour
Dimensions are 1.25” x 5.375” x 3.25”
Needs batteries
Easy to use
Set point temperature range is from 45 ℉ to 90 ℉
Lux Products TX1500E Programmable Thermostat
The TX1500E works with most 24-volt heating and cooling systems, single-stage heating and cooling included, heat pumps without auxiliary/emergency heat and 750 millivolt wall heaters or gas fireplaces. It also requires batteries in order for it to work.
The thermostat is easy to install and really easy to program it and to use it. The TX1500E thermostat can reduce your energy usage and lower your bills up to 33% since it comes preprogrammed to the default energy-conservation heating and cooling schedule. Also, it allows custom modifications of temperature to fit your comfort needs and schedule. You can program it in a way you desire in the case when you are going to be away from home for a couple of days only or for longer vacations and holidays. So you can set up different schedules for weekdays, Saturdays and Sundays, and it also allows you to set up 4 different periods in a day. That feature is built-in on a speed dial which enables you to make quick and easy changes. It also has a lock keyboard feature to prevent undesired changes (good if you have small children in the house).
For those who don’t want to deal with touch screen thermostats, this one is great. It has an electro-luminescent display that shows the current day, time, temperature and air-filter status. It turns on by pressing any button on the front panel. By pressing the H button on the front panel the thermostat will show you the relative humidity of the room. If you open the lid on the front panel you will see another set of buttons that allows you to change needed settings. The remaining filter life span is shown on the display graphically or it can be displayed in calendar days or percent remaining.
In order to ensure temperature and humidity accuracy sometimes it requires calibration. You can calibrate the temperature up to +/- 5° and relative humidity up to +/- 15%. The thermostat comes with the Swing option built-in. But it’s missing “circulate” option for the fan.
Features:
White colour
Dimensions are 1.25” x 8” x 10.5”
Needs batteries
Simple installation
Shows relative humidity
Emerson 1E78-140 Non-programmable Thermostat
The Emerson 1E78-140 non-programmable thermostat works only with single-stage heat-only systems. It is in use with 24 volt and 750 millivolt power systems. The thermostat is not compatible with electric baseboard heath and other systems which are not single-stage heat-only systems. It is great for RVs. It also requires 2 AAA batteries in order for it to work; batteries have a life span of approximately one year.
The installation is very simple, it requires just two wires, red one goes into RH input and white one goes into W input. The digital display is not too big and it has installed backlight which has to be enabled with pressing the “heath” button first and then pressing “up” and “down” arrows at the same time. It shows only temperature values, the current room temperature and the one you set, also it shows “flame” sign (it means that the switch is in “heat” position) and battery status in order for you to know when to change it.
It is a non-programmable thermostat so once you put the batteries in it will start detecting room temperature instantly. Once you set up the desired temperature, the thermostat responds immediately to reach the target temperature, and stops as soon as it reaches it. It keeps the room temperature within 1℉ interval. Set point temperature range is from 45 ℉ to 90 ℉. Only controls are the three buttons on the front panel, and they can get weary after a while. The thermostat does not come with backplate included, so if you have painted around the backplate of your old thermostat, hang on to the old backplate.
Features:
White colour
Dimensions are 1.75” x 6.25” x 4.25”
Set point temperature range is from 45 ℉ to 90 ℉
Digital display with backlight
Non-programmable
White Rodgers Emerson 1C20-101 Thermostat
Emerson 1C20-101 thermostat is designed to work with single-stage heating systems only. It operates with low voltage so it is great for 750 millivolt and 24 volt power systems. It is mercury free and does not require batteries to work.
Installation is basic and easy, there are two wires, plug the red one into R input and the white one into W input. This model comes with backplate included so you don’t have to worry about ugly walls. It is a non-programmable thermostat. It comes with built-in heat anticipator which allows you to regulate the desired temperature. Once you mounted the thermostat on the wall make sure to set the anticipator to match the settings of your old thermostat or it should be set to match the current rating on your main heating control. To lengthen the heating system cycles move the pointer counter-clockwise, and to shorten heating system cycles move it in opposite direction – clockwise. Once you set the anticipator up put the plastic cover back on the base.
After power is turned on, you can slide temperature lever to desired settings. Note that if you want to turn the heat off you should slide the lever all the way to the left until you hear it “click” in the position. That is a great option for those who do not spend too much time in their households, for instance, RVs, campers, etc. because if the temperatures hit lower values than the lowest temperature point, the thermostat will start with the heating system again. White Rodgers 1C20-101 thermostat is very simple mechanical thermostat which doesn’t have a display so it doesn’t show current room temperature just the ability to regulate it.
