Programmable thermostats are a must-have these days to bring a smart heating atmosphere in your house. So are you thinking about controlling the temperature of your house through the best smart thermostats, but unfortunately are low on cash?  Worry no more as we have prepared a budget-friendly guide for you to find the best programmable thermostat under $100 . However, before diving into our list for the best thermostat under 100 let us look at a few things to consider before you make your decision. Factors to Consider Type of thermostat When buying your thermostat, you would see either a simple or smart thermostat. Go with simple programming thermostats if you don’t want anything extra fancy with the price. On the other hand if you want cool functions like compatibility with google or alexa voice, then go for best thermostat for alexa. Smart thermostats also have the ability to be…