[Bill]

I concur with the folks saying it sounds like a weak breaker in your control panel. Having said that, I wonder if installing one of those "hard start" units on your ac's would help? That would be treating the symptom, probably not the cause.

And also, I agree with Gene. I don't think I've ever used the a/c and heat together in the same day. Then again, for me, cheapness overshadows comfort. I would feel bad about paying to change the temperature I already paid to regulate the other way.

I also do the same thing Gene does, when it's temperate outside and not too humid, I'll open up some windows and just kind of ventilate the house. I do the same thing in May, when it's cool at night but hot in the day. I like to get the cool night air into the house, then shut the windows in the morning and capture the coolness, as it were. Makes it easier on the a/c.