Estimate whether a smart thermostat could pay for itself. Compare thermostat price, installation cost, rebates, annual HVAC spending and expected heating and cooling savings.
Calculate Thermostat ROIIf you need help estimating the savings percentage first, use our thermostat savings calculator . If you do not know your annual heating and cooling cost, start with the HVAC monthly energy cost calculator .
Enter the thermostat cost and your own expected HVAC savings assumptions.
This calculator assumes the selected savings rate remains constant. Real savings depend on the HVAC system, climate, thermostat settings, occupancy, equipment compatibility and how the thermostat is used.
Request HVAC help below if you want to provide your location and information about your current system.
A household spending more on heating and cooling has more dollar savings available from the same percentage reduction. Estimate your baseline with our HVAC monthly energy cost calculator .
Buying a smart thermostat does not create savings by itself. Savings come from changes in HVAC operation, such as scheduled setbacks, occupancy-based adjustments and reduced unnecessary runtime. Use our thermostat savings calculator to estimate that part first.
Some thermostat replacements are straightforward while others involve wiring, compatibility or control-system considerations. Review thermostat installation before assuming every upgrade has the same installed cost.
Utility or manufacturer incentives can reduce net upfront cost when available. Enter only an incentive you have verified for your property and thermostat.
Smart controls can help reduce unnecessary operation, but rising energy use can also involve extreme weather, equipment condition, duct losses, dirty filters or airflow restrictions. If your bills have changed sharply, review common causes of a high HVAC electric bill .
Cooling costs can also be analyzed directly with our AC running cost calculator before assigning all of the potential savings to a thermostat.
HVAC equipment, wiring, control voltage, staging and heat pump configurations can affect thermostat compatibility. If an existing control is failing rather than simply lacking smart features, review thermostat repair before replacing working HVAC equipment unnecessarily.
For Texas cooling schedules, also review our guide to the best AC temperature for Texas summer when building realistic thermostat schedules.
ENERGY STAR provides information about certified smart thermostats and the energy-saving performance criteria used for certification. Review ENERGY STAR smart thermostat guidance .
DOE building-science guidance explains how programmable thermostat schedules can reduce unnecessary heating and cooling during appropriate periods. Review DOE thermostat guidance .
Payback depends on the thermostat price, installation cost, available rebates, annual HVAC spending and the actual energy savings achieved after installation.
They can reduce HVAC energy use when features such as scheduling, occupancy adjustments or remote controls change how the heating and cooling system operates. Savings are not guaranteed for every household.
ROI depends on the homeowner's cost, savings and expected ownership period. This calculator reports the mathematical return based on the values entered rather than defining a universal target.
Yes. Installation is part of the upfront investment when professional installation is required, so excluding it would understate the real project cost.
Yes, if you have confirmed that the rebate applies and expect to receive it. The calculator subtracts the rebate from the thermostat and installation cost.
Not necessarily. Savings depend on schedule changes, runtime and equipment operation. An inefficient or faulty HVAC system may have problems that thermostat scheduling alone cannot correct.
Many smart thermostats support heat pumps, but compatibility depends on the HVAC equipment, wiring, staging and auxiliary heat configuration. Compatibility should be verified before installation.
No. The result depends on the savings percentage and cost assumptions entered by the user. Actual energy use and financial savings can differ substantially.
Request HVAC help if you want to provide your Texas location and details about the current thermostat and HVAC system.