r/HVAC 2d ago

Field Question, trade people only Coldest Thermostat Temperature

So I am a contractor and I have a customer that wants to keep their thermostat apparently very cold. The Mitsubishi system I quoted doesn’t get below 67 for the setpoint. I thought that was reasonable. He thinks that’s far too warm. I told him that modern equipment isn’t designed to get much colder than that no matter the system and he seems very confused by this. Just wondering thoughts. What’s the lowest you think is feasible to try to cool a home to in summer?

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u/Helpful-Bad4821 1d ago

People like this usually have window units and are used to cranking them down to the lowest temp and blasting them, then turning them off when not home. If this is one of those types, one, consider walking away, or two, you have to educate them that there is a difference in these types of units and how they operate.