4 Cheap and Budget Programmable Thermostat Under $50 2019

Do you want to replace your old cheap programmable thermostat? Then you came to the right place! On this page, we choose 4 best cheap programmable thermostats under $50.

If your budget is above $50 but under $100, here we list the thermostats at that price range. 

For thermostats above $100 and under $150,read this page.

For best Wi-Fi thermostats, visit our homepage here.

If you don’t know types of thermostats, click here.

For someone who want to replace an old thermostat with a simple but budget programmable thermostat, save energy and money is not the primary aim, what they want first is cheap price and easy to use. They don’t need functions like remote access, smart and learning their habits (if you want to buy a wifi thermostat, click here). The best thermostats under $50 are listed below for you to buy them.

ProductProgramEnergy SavingBatteries Required?Price
Honeywell RTH2300B5-2 Day
4 program per day
up to 33%yes
Lux Products TX1500E5-1-1 Dayapproximately 33%Yes
2 AA
Lux WIN1005-2 Dayup to 33%Yes
2 button cell
Lux Products TX9100U7 DayEnergy Saving CertificationYes
2 AA

Review of Honeywell RTH2300B1012/A Thermostat

Honeywell RTH2300B1012/A Thermostat

Most users who have bought this thermostat to give it a high score and a good review, they think it is a great option for their house. The score of this one is 4.5 out of 5. It is the best programmable thermostat under $25.

It is a 5-2 days programmable thermostat, with one program for weekends and one for workdays. It can be compatible with most heating, cooling systems but didn’t support heat pumps with auxiliary heat, so check if your heat pumps are with or without auxiliary heat. And it does not work with electric baseboard heat (120-240v) or multistage HVAC systems. That means only single stage HVAC is supported. It is accurate to just 1 -/+ degree F, so you are completely aware at all times of its value. The controls are easy to learn and you will master them straight away.

If you are interested in this product, you can click here to see more customers’ review and check the price


As you can see in the picture, it is a white cube with a Backlit digital display screen in the middle and five buttons around the screen, and there are five buttons on the bottom. Five buttons are used to set program and change the temperature setting. It is just a normal programmable thermostat with no good-looking appearance, but they did very well on functions.


The first feature is the cheap price, everyone can afford it thanks to the low price, if you have an old none-programmable thermostat which you want to replace with, RTH2300B1012/A 5-2 day programmable thermostat is a good choice. Many customers use this to replace their old thermostats.

Second, this Honeywell device allow you to set 2 program for weekdays and weekend, and in each program, you can set four program periods per day. For most people who works on weekdays this just satisfy their need.

Third, it is easy to install and use. According to some customer’s review, they only spent about half hour to replace it with the old thermostat.

Fourth, Precise temperature control, it can accurately keep the room temperature in +/-1-Degree F for consistent comfort.


  • It is compatible with Gas, oil or electric furnace, central air, hot water systems, millivolt system, central heating and cooling system and heat pump without auxiliary/backup heat.
  • 2 separate programs for weekends and weekdays and 4 periods per day
  • Can display in Fahrenheit or Celsius temperature
  • Easy to use and install very easy to change programs.
  • Keep the temperature within ±1 degree Fahrenheit
  • Backlit display makes it easy to read in the night.
  • C-wire is not needed.


  • It cannot be used on heat pumps with auxiliary/backup heat, if your heat pump has auxiliary heat, don’t buy this one.
  • It cannot work with multistage heating or cooling HVAC systems, only single stage systems support.
  • Does not work with electric baseboard heat (120-240V)
  • Some customers said the maintains of temperature to +/- 1 degree make the furnace run to frequently, which may cause the energy bill increase.
  • requires batteries.

Some tips for you:

If you only have a furnace with 2 wire thermostat , usually connect them to positions R and W is correct, if you are not sure, you can call the support phone on the manual for help.

Consider the cheap price at around $20, it is very attractive in price and quality.

Click here to visit AMAZON and get this product at a PROMOTIONAL PRICE!

Review of Lux Products TX1500E Universal 5-1-1 Programmable Thermostat

Lux Products TX1500E Universal 5-1-1 Programmable Thermostat

The Lux TX1500E is a good choice if you only want to control the air temperature of your home. This thermostat is great for heating and cooling systems including single and multi-stage heat pumps. A big advantage of this device is its universal compatibility for all system types except electric baseboard heat. Most thermostats at around $30 don’t have such compatibility.

It is a 5-1-1 Programmable Thermostat which means you can program it for the whole week and set two programs for Saturday and Sunday, and you can set 2 or 4 periods for each day. Programming it is simple and no complications will occur.

TX1500E and TX1500U are similar products, they have same functions, the only difference between them is the size of the screen, TX1500U has a larger touch screen.

Click here to read more reviews and detailed information!

Review of Lux WIN100 Heating & Cooling Programmable Outlet Thermostat

Lux WIN100


WIN100 is the most popular and the No. 1 sale programmable thermostat under $50. It got a 4.4 scores out of 5. It is designed to work with window air conditioners and electric space heaters. This one has a huge temperature range which is from 45 degrees F to 90 degrees F. It is a 5-2 programmable thermostat which means you can set 2 programs for weekdays and weekends and you can have four different temperatures in each 24 hour period: morning, afternoons, evening and overnight.  It can keep the room temperature in a small fluctuation at around +-1 degree even if you lower the central heating temperature, very stable.

With the hold button, you can manually adjust the temp overriding the programmed temp settings.  It is very easy to use. All you need in terms of power is a grounded 120v AC power outlet.  As some customers said it can save up to 33% on your energy bills.

Click here to read more customers’ reviews and detailed information!

Review of Lux Products TX9100U Universal 7-Day Programmable Thermostat

Lux Products TX9100U

Lux Products TX9100U is a 7-day programmable thermostat with 4 periods or each day, and some unexpected situation, it provides a special daily program so that you don’t need to operate it frequently. It can work with single and multi-stage heat pumps plus 2nd stage cooling.

It has a universal compatibility which makes it can work with most system types except electric baseboard heat, as some users said it is very easy to program like all Lux thermostats.

It has a keyboard lockout for unauthorized users feature which can protect the programs from being disorganized by children. If you will leave home for a long vacation, you may want the thermostat stop working for days. Lux provides an adjustable vacation hold program which can let it stop working for 1~30 days.

If you don’t have C-wire in your HVAC system, it doesn’t matter as TX9100U can work use 2 AA batteries.

Click here to read more customers’ reviews and detailed information!