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Home Energy Efficiency Calculator

Score your home's energy efficiency based on its size, age, insulation, heating system, and climate zone. Use this audit tool to identify inefficiencies and estimate annual energy costs before calling a professional auditor.

Home Size (sq ft)

Home Age Category

Insulation Level

Primary Heating

Climate Zone

Fill in the required fields to see your result.

Climate

Home Energy Efficiency Upgrade Calculator

Calculate the payback period in years for home energy upgrades — insulation, new windows, or a new HVAC system — based on your home size, current energy bill, climate zone, and available rebates.

Home Size (sq ft)

Current Monthly Energy Bill ($)

Upgrade Type

Climate Zone

Available Rebates (%)

Fill in the required fields to see your result.

Key differences

	Home Energy Efficiency Calculator	Home Energy Efficiency Upgrade Calculator
Category	Climate	Climate
Inputs required	5	5
Result	Estimated Annual Energy Cost ($)	Annual Net Savings After 15 Years ($)
What it does	Score your home's energy efficiency based on its size, age, insulation, heating system, and climate zone. Use this audit tool to identify inefficiencies and estimate annual energy costs before calling a professional auditor.	Calculate the payback period in years for home energy upgrades — insulation, new windows, or a new HVAC system — based on your home size, current energy bill, climate zone, and available rebates.