Kswck wrote:
>
> The question is why it takes so long to heat up. Read the post again.

The questions in your original post we

"Is this a problem that would require a service call?", "Can a tech fix
this?" and "Or
is it time to scrap the oven?".

The statement in your post which you seen to be referring to as if it
were a question was:

"It has always taken long to heat up/cool down, but seems longer
lately."

Noting that you specified "heat up/cool down, but seems longer lately"
you are indicating that both the heating and cooling cycles seem longer
to you lately.

Perhaps english isn't your first language, or perhaps the comment on
your perception of time changing is accurate.