Well pump running all the time? High water bill? 90% of the time, the problem lies with a toilet.
Over time, water heaters loose efficiency due to calcium carbonate, rust and/or lime buildup. It can take longer for your hot water heater to do its job.
Shutting the water off when you go away can save you a lot of money and a lot of heartache!
If your heating system has a direct vent[i], make sure the snow does not block the vent. An older system may not be high enough off the ground to accommodate for snow fall and the system may shut down.
Replace the filter on your furnace every 3 months and more often if you have pets.