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is 2-zone hvac/ac system energy saving?

10 years ago

We are in sf bay area. our house is 4br less than 2000 sqf.
We are designing all new hvac/ac system now.

Is it worthwhile to have 2-zone hvac/ac system? e.g. at night we really don't need to heat the common living space but just the bedrooms. Does having 2-zone system actually save some money?

also I read a few post here and people seem to say 2-zone system tend to have issue down the road. what kind of issues are there?


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