When to update our temperature control

My fiance is an Heating & Air Conditioning serviceman so our house is consistently new & undoubtedly on top of the maintenance of our Heating & Air Conditioning system & temperature control, however my best friend just called me recently in regards to her temperature control, but i pretty much should be an Heating & Air Conditioning serviceman because all the problems that I hear from my fiance about other people’s Heating & Air Conditioning systems, I know all about… Therefore when it comes to our friends & family my buddy and I will supply free Heating & Air Conditioning advice if they call us. My friend called me & asked when she should update her temperature control. I asked her how outdated her Heating & Air Conditioning system was & she said that it’s about 10 to 15 years old. I told her that if a Heating & Air Conditioning system is that outdated that also means that her temperature control is around that age as well. I even asked her what her temperature control looked like. There are temperature controls that are undoubtedly outdated that still use the dial to control the temperature in one’s home! She said that she did have a dial installed on the wall & I told her that she should update it & get a digital temperature control. I told her that a newer temperature control model can increase the unit’s efficiency & also monitor the uneven temperatures within her home. There are also programming operations that allow you to program your home’s temperature to fit your schedule. She didn’t realize that that was an choice in digital temperature control models. I told her to update her temperature control abruptly so she could see the difference in her energy bill.
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