Question 1

How much can I save with a smart thermostat?

Accepted Answer

ENERGY STAR certified smart thermostats save approximately 8% on heating and cooling bills, or about $50 per year on average. Your actual savings depend on your heating/cooling system, climate, and how consistently you use setback schedules.

Question 2

What makes a thermostat 'smart' or 'advanced'?

Accepted Answer

Smart thermostats go beyond simple programming—they learn your schedule, detect when you're away, and connect to Wi-Fi for remote control. Many also integrate with utility demand response programs to help reduce peak energy demand.

Question 3

Do smart thermostats work with all HVAC systems?

Accepted Answer

Most smart thermostats work with standard 24-volt HVAC systems, including central air, heat pumps, and gas furnaces. They may not be compatible with high-voltage baseboard heaters, millivolt systems, or some multi-stage equipment. Check the manufacturer's compatibility tool before purchasing.

Question 4

How is my savings estimate calculated?

Accepted Answer

This calculator uses "deemed savings" values from the Massachusetts Technical Reference Manual (TRM) — the same methodology Mass Save uses to calculate its own rebate program savings. Rather than simulating your specific home, the TRM assigns a fixed annual savings value per heating fuel type, based on field studies of homes that installed smart thermostats. That means your actual savings could be higher or lower depending on your home's specific characteristics, but the value shown represents the officially studied average for your fuel type.

Smart Thermostat

Frequently Asked Questions

How much can I save with a smart thermostat?

What makes a thermostat 'smart' or 'advanced'?

Do smart thermostats work with all HVAC systems?

How is my savings estimate calculated?

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