Had high hopes for this budget priced item after several years of faithful service by another brand. After a week of remaining stable we find that the indicated temperature is consistently 5 deg. F cooler than actual (compared to two other thermometers that we put inside the unit). It is relatively noisy for thermoelectric units and struggles to maintain even an 18 deg F differential between set point and room temperature, so if your room ever warms up to more than 80F (ever go on vacation in summer?) the abolute best you will get in this unit is 62F (or warmer)