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Calculate the right HVAC size for your home in your area.
Design temperatures: 95°F summer / 20°F winter
Total conditioned living space
Cooling Load
48,763
BTU/hr
Heating Load
143,319
BTU/hr
Recommended Size
5 Ton
System Capacity
Est. Monthly Savings
$18
High-efficiency upgrade
Estimated System Cost
Equipment + professional installation
$15,750 - $29,250
Before rebates and incentives
This is a simplified estimate based on Manual J principles. An on-site assessment by a licensed HVAC contractor is required for accurate sizing. Factors like ductwork condition, air sealing, and specific window types affect the final recommendation.
By using this tool or submitting your information, you consent to be connected to a vetted local professional in our network. You may receive calls or texts at the number provided. Standard message and data rates may apply.
Ever wonder exactly how much your heating and cooling is costing you each month? It's probably more than you think. HVAC typically accounts for 40-60% of a home's energy bill, making it the single biggest energy expense for most households.
Our energy cost calculator helps you understand where your money is going. By entering details about your system, usage patterns, and local energy rates, you'll get a realistic estimate of what you're spending—and more importantly, where you might be able to save.
Understanding your energy costs is the first step toward reducing them. Whether you're deciding if a new high-efficiency system makes financial sense or just trying to budget more accurately, this calculator gives you the numbers you need.
Our calculator factors in multiple variables that affect your heating and cooling expenses:
Stop being surprised by high utility bills. Know what to expect each month and plan accordingly.
When considering a new system, you need to know your current costs to calculate potential savings.
If your calculated costs are much lower than your actual bills, something might be wrong with your system.
See how different efficiency levels, fuel types, or usage patterns would affect your costs.
Mistake: Ignoring phantom loads
Solution: Your HVAC system isn't the only energy user. Make sure you're not attributing all your electric bill to heating and cooling.
Mistake: Not accounting for seasonal variation
Solution: Energy costs vary dramatically by season. A January gas bill won't look like a June one. Average over a full year for accuracy.
Mistake: Using national average rates
Solution: Energy prices vary significantly by location. Use your actual utility rates for accurate calculations.
Mistake: Forgetting about rate tiers
Solution: Many utilities charge more as you use more. Your marginal rate might be higher than your average rate.
Sometimes high energy costs signal an underlying issue that needs professional attention:
It varies widely based on climate, home size, and efficiency. Average US households spend $1,000-$2,000 annually on heating and cooling. In extreme climates or larger homes, it can be $3,000-$5,000 or more.
It depends on local rates. Natural gas is typically cheaper per BTU in most of the US, but heat pumps can be more efficient in moderate climates. Compare your local gas and electric rates to determine which is more economical.
Upgrading from a 10 SEER to a 16 SEER AC can reduce cooling costs by 35-40%. Upgrading from an 80% to 95% efficient furnace saves about 15% on heating. Actual savings depend on your current system and usage.
Studies show smart thermostats save 10-15% on heating and cooling costs on average. The savings come from optimizing schedules and avoiding heating/cooling an empty house.
Calculate the BTU needed to heat or cool your room or home
Calculate your home's heating and cooling load using Manual J methodology
Find the right filter size for your HVAC system
Compare energy savings between different SEER ratings