In terms of set point setback it is really not a question of, “Is it efficient”, rather it is a question of, “When is it efficient?” When temperatures fall beneath the milder temperatures of the winter months setting your heat pump thermostat settings back more than a few degrees is a bad idea and not efficient
Something as simple as a loose belt or worn belt can cost a business owner as much as 6% in loss of efficiency which can equate to upwards of $500 in additional electricity charges.
When there are company profits to be made a lot can go wrong for the customer in terms of knowing what to believe or not. Many HVAC contractors love an “emergency” or “crisis” because what better time to make a buck than a crisis. This is an unfortunate commentary on today’s heating and cooling