Programmable thermostats
are inexpensive ($60- to $100-) and it will take a
handy homeowner maybe an hour to install.
It will take
a bit of time
to
figure out
the programming instructions but after doing the setup
once, you're ready to forget it and let it work its
magic.
Dropping your house temperature just two or three degrees
at night and during the work day will cut your fuel bill
enough
to notice.