Programmable thermostats are simple, inexpensive devices that provide better savings than any other energy efficiency measure. Available in several shapes and sizes, they can be added to most modern hvac systems and can pay for themselves in as little as a month.
To get professional-looking splices in wiring without electrical tape, try head-shrinkable tubing. Slip a tube on one of the wires before splicing. After splicing, move it over the splice and apply heat with a heat gun. The tubing will shrink down for a neat, protective covering. You can buy tubes in multiple sizes, as well as shrinkable wire caps to use in place of screw-on wire nuts. They’re perfect for work on vehicles, trailers, underground and pool wiring, or for outdoor lighting or sprinkler systems.