Quote:
Originally Posted by retiredguy123
I really don't understand the hot and cold room situation. My thermostat never deviates more than one degree from the setting. It sounds like a thermostat issue, or maybe an insulation issue. A variable speed compressor still uses a thermostat to control when it comes on or off.
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As you are aware, single stage units are like a light switch, either full On or full Off. A variable speed inverter system can be full On and full Off and 80 steps in between. I don't understand this 100% but what they are claiming is since the variable speed runs longer and slower once the house is at the set temperature, this gives all the rooms in the home enough time for the temperature to equalize better. That's the principal and I know from people who have these systems that this is indeed the case and a more comfortable house. You also get the benefit of better air filtration because of the longer slower run times.
As far as zoning, in my home in NY where we had a basement and two levels it made a lot of sense to have multiple zones but here in the Villages since all the homes are single level and not that big except for the premier homes, I don't think you save much only cooling the bedroom and not the rest of the home for example, since at night the AC load is minimal And in the winter you want the whole house to be at a certain temperature when it gets close to freezing since the extremeties of your home will be colder than the core. Just my opinion on that topic.
Once I get my variable speed system I'll report back on the pro's and con's that I see.