At its core, a thermostat is simply the controls used to regulate temperature in a heating system. You can set a preferred temperature, and the thermostat works to keep your room or boiler at this desired level. If the home starts to drop in temperature, a thermostat switches the heating on to warm it up.

The thermostat housing and the thermostat itself are two different components and do not necessarily need to be replaced together or at the same time. The housing is just a piece that covers the thermostat that also has an opening for a radiator hose which is where the water enters and exits the motor.

Here are four signs that it needs to be replaced.

• High Temperature. One of the first signs that your thermostat may need replacement is how high the temperature inside gets.
• Cold Engine.
• Temperature Gauge Issues.
• Coolant Level Issues.

Both thermostats can call for heat, triggering the furnace to fire, and each thermostat controls one baffle. The thermostat in each zone controls the temperature in the zone. If you currently have two thermostats controlling two zones you will want two Nest thermostats.

Setting the thermostat back seven to 10 degrees for eight hours at a time can help you save 10 percent on your heating and cooling costs. In the summer, the Department of Energy recommends a setting of 78 degrees when you’re at home and awake. Make the home warmer at night and when you’re out of the house.

If you want to keep the energy bills low, you should set the thermostat to ‘Auto’. However, if you prefer more even distribution of heat inside the house, it’s better that you set the thermostat setting to ‘On’.

General recommendations for winter thermostat settings:

1. If someone is at home in the daytime, 72° F (22° C) is a good start, but aim for 68° F (20° C).
2. If everyone is away from home in the daytime, or you’re asleep at night, we feel 66° F (19° C) to 62° F (17° C) is best.

You can save energy and keep your costs in check by keeping your thermostat at 68 degrees Fahrenheit during the daytime. Energy.gov reports that turning your thermostat lower by 10 to 15 degrees for 8 hours per day will help you see an energy usage reduction of 5 to 15 percent per year on your bill.

Certainly! And don’t be afraid to drop your thermostat even lower at night – even in winter. If you’re at home in the daytime, 72° F (22° C) is a good start, but aim for 68° F (20° C). If you’re not at home in the daytime, or you’re asleep at night, we feel 66° F (19° C) to 62° F (17° C) is best.

You can save as much as 10% a year on heating and cooling by simply turning your thermostat back 7°-10°F for 8 hours a day from its normal setting. You can easily save energy in the winter by setting the thermostat to 68°F while you’re awake and setting it lower while you’re asleep or away from home.

The best bedroom temperature for sleep is approximately 65 degrees Fahrenheit (18.3 degrees Celsius). This may vary by a few degrees from person to person, but most doctors recommend keeping the thermostat set between 60 to 67 degrees Fahrenheit (15.6 to 19.4 degrees Celsius) for the most comfortable sleep.