Many homeowners think there’s not much they can do about telephone, heating, water and other utility expenses. Sure, you may grumble about a high heating bill one month, but what can you do about it?

Turns out, you can do plenty. There are several ways to reduce monthly utility costs that can save you tens or even hundreds of dollars. For example:

• Shop around for a better phone plan. Then contact your phone company. They might match the rates.

• Turn down the thermostat on your water heater....