Air Conditioning - dual (zoned) units, advantages?

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philh
07-15-07, 06:39 PM
I have 2 heat pump units which are now 10 years old. One unit needs to be replaced, and obviously the other unit will soon need replacing also. What are the pros and cons of replacing both units with a single obviously more energy efficient unit, as opposed to replacing just the broken unit for now and keeping my fingers crossed that the second one won't fail soon?

I plan on moving in the not too distant future. My house is a single level 2500 sq foot. We tend to run both units at the same time and keep the whole house at the same temp of around 79 when we are home at nights and weekends.http://forum.doityourself.com/images/icons/icon5.gif
Question

Grady
07-16-07, 07:22 PM
I would just replace the one for now. I would much rather have two entirely separate systems simply because if one goes down, you still have part of the house being conditioned & some is WAY better than none.
Ed Imeduc
07-16-07, 09:31 PM
Im with Grady Stay with the two units. They work a lot better for homes that would have to have long runs or two floors. If you will move in a short time go for a seer of 13 or 14. Are else go for the seer of 15 or over . You can get a tax credit from the IRS on it. 10 years on a unit is not bad . Most of the time we look at a units life at around 15 years is it