Maybe the inspector is talking about the size of the conducter on the
breaker? If it's #8, it is correct for the 40A breaker.
If it's smaller, the breaker needs to be changed appropriately.

Bill

wrote in message
ups.com...
Hello,
I recently had a home inspection in preparation for selling my house.
The inspector informed the buyer that I need to downgrade the circuit
breaker (from 40amp to 15amp) for new hvac? He said he sees this
problem a lot. My father, who does a lot of DIY including some
electrical, says that if we change to 15amp when the hvac switches to
aux. heat it will blow the breaker?

I need to find out if this really needs to be changed, the inspector
warned the hvac unit could be damaged if this isn't changed. But I
don't want to have the change done if it will cause problems when the
unit goes to aux heat.

I'd call the hvac installer, but, clearly, they didn't think it was
necessary to change the breaker & I'd really like an independent
opinion on this.

ALSO, is changing a breaker best left to an electrician or might this
be something we could do ourselves?

Thanks in advance for any input.
WJ