⚡ Energy Efficiency
Energy Efficiency Calculators
Quantify HVAC energy performance, compare equipment efficiency ratings, calculate payback periods on upgrades, and estimate annual energy costs. Essential tools for energy auditors, contractors, and homeowners making equipment decisions.
30+
Free Tools
SEER2 / AFUE
Current Standards
Imperial & Metric
Both Units
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AFUE Calculator
Calculate annual heating energy and cost from furnace AFUE rating. Compare high-efficiency vs. standard furnaces with full payback analysis.
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Savings
Air Leakage Calculator
Estimate air leakage energy loss from blower door test results or ACH50 rating. Quantify the heating and cooling cost impact of an air-leaky building envelope.
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Payback
Air Sealing Savings Calculator
Calculate before/after energy savings from air sealing work using ACH50 improvement, degree days, and heating fuel cost.
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Utility Bills
Annual Energy Cost Calculator
Model total annual home or building energy cost across heating, cooling, water heating, and base loads for any Canadian city and fuel mix.
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Blower Door Calculator
Convert blower door test results (CFM50, Pascals) into ACH50 and normalized leakage. Benchmark against NBC 2020 and Net Zero Ready targets.
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Savings
Carbon Footprint Calculator
Calculate CO₂ emissions from HVAC systems. Compare gas vs. electric heat pump emissions by province using actual grid emission factors.
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Heat Pump COP Calculator
Calculate seasonal coefficient of performance for heat pumps across a Canadian heating season, accounting for capacity degradation at low outdoor temperatures.
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Savings
Degree Day Energy Calculator
Estimate annual heating and cooling energy from HDD/CDD, building UA, and system efficiency for any Canadian city.
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Payback
Duct Sealing Savings
Calculate energy and cost savings from sealing leaky ductwork, based on estimated leakage percentage and system operating hours.
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Savings
Economizer Savings Calculator
Estimate free-cooling energy savings from an air-side economizer based on your climate's bin temperature data and cooling load.
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EER Calculator
Calculate Energy Efficiency Ratio (EER) and convert between EER and SEER. EER measures efficiency at a single peak condition.
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Energy Audit Calculator
A desk-audit tool covering envelope, mechanical, and controls, producing an EnerGuide-style score and prioritized upgrade list.
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Energy Intensity Calculator
Calculate energy use intensity (kWh/m²/yr) and benchmark against typical Canadian building types and performance tiers.
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Comparison
ENERGY STAR Calculator
Compare ENERGY STAR certified equipment against standard models across 8 product categories, with 15-year savings and payback.
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Energy Use Intensity Calculator
Calculate and benchmark building EUI in kWh/m² and GJ/m² against Canadian building type norms, with HDD normalization.
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Utility Bills
Fuel Cost Comparison
Compare heating costs between natural gas, propane, oil, electric resistance, and electric heat pump on a cost-per-BTU delivered basis.
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Savings
Greenhouse Gas Calculator
Calculate GHG emissions from all home energy use by province, with reduction scenarios for heat pump switching, envelope upgrades, and solar PV.
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Comparison
Heat Pump vs Gas Calculator
Full cost and GHG comparison of heat pump vs. gas furnace across your climate, load, and utility rates, including dual-fuel scenarios.
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Payback
Heat Recovery (HRV/ERV) Calculator
Calculate energy savings and payback from installing an HRV or ERV vs. exhaust-only ventilation, using sensible recovery efficiency (SRE).
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HSPF / HSPF2 Calculator
Calculate heat pump heating energy from HSPF or HSPF2 rating. Convert between HSPF and HSPF2 and compare to gas on a per-BTU basis.
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Payback
Insulation ROI Calculator
Calculate ROI and payback for attic, wall, basement, and other insulation upgrades using RSI improvement and degree days.
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Payback
LED Lighting Savings
Calculate energy and cost savings from converting to LED lighting, including cooling load reduction from lower heat output.
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Mechanical Efficiency Calculator
Calculate efficiency and annual cost for chillers, boilers, pumps, fans, and compressors, including IPLV and VFD savings analysis.
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Savings
Net Zero Calculator
Model the path to net-zero energy for your home: select upgrade measures and see the energy gap, GHG reduction, and funding available.
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Payback
Payback Period Calculator
Calculate simple and discounted payback period for HVAC upgrades — insulation, windows, new equipment, HRV, heat pumps.
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Utility Bills
Peak Demand Calculator
Calculate monthly demand charges and savings from load shifting, equipment staging, and demand response participation.
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Utility Bills
Power Factor Calculator
Calculate power factor penalty charges and the capacitor bank size needed for correction, with full payback analysis.
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Savings
Rebate Calculator
Find available federal Canada Greener Homes and provincial rebates for heat pumps, insulation, windows, and water heaters.
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SEER / SEER2 Calculator
Calculate SEER and SEER2 ratings, convert between SEER and SEER2, and estimate annual cooling energy consumption and cost.
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Payback
Solar PV Savings Calculator
Estimate solar PV generation, offset, and payback for your Canadian city, roof orientation, and system size.
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Thermal Mass Calculator
Calculate building thermal storage capacity, time constant, and peak demand reduction from pre-cooling strategies.
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Utility Bills
Utility Bill Analyzer
Analyze monthly gas and electricity bills against expected consumption from load calculations and degree days.
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Payback
Variable Speed Savings Calculator
Calculate VFD energy savings for pumps and fans using the cube law based on your actual annual load profile.
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Savings
Whole-Home Energy Calculator
Model total annual home energy use across heating, cooling, water heating, appliances, and lighting with EUI and GHG breakdown.
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Payback
Window Upgrade Calculator
Calculate energy savings from window replacement — improved U-factor and SHGC — combining heating, cooling, and solar gain impacts.
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Charge Weight Calculator
Calculate total refrigerant charge weight from line set dimensions and component volumes. Covers R-410A, R-32, R-454B, and other refrigerants.
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Savings
Energy Savings Estimator
Estimate combined annual energy savings from multiple home efficiency upgrades: HVAC equipment, insulation, windows, and smart thermostats.
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Comparison
Energy Star Compliance Checker
Verify if HVAC equipment meets Energy Star certification requirements for Canada and the US, across furnaces, AC, heat pumps, and water heaters.
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Comparison
Heat Pump vs Furnace Calculator
Compare annual heating cost between a heat pump and gas furnace for your climate, and model the dual-fuel switchover temperature and breakeven point.
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Payback
Insulation Upgrade Calculator
Calculate heat loss reduction and annual energy savings from upgrading attic or wall insulation R-value for your Canadian climate zone.
About HVAC Energy Efficiency
HVAC equipment accounts for 40–60% of total energy use in most Canadian homes and commercial buildings. Selecting the right efficiency level and understanding the economic tradeoffs between first cost and operating cost is critical for homeowners, contractors, and building owners.
Understanding Efficiency Ratings
- SEER2 (Seasonal Energy Efficiency Ratio 2): Measures cooling efficiency over a full season. Minimum 13.4 SEER2 for new residential central AC in Canada. Higher is better. Use the SEER2 Calculator.
- AFUE (Annual Fuel Utilization Efficiency): Measures furnace heating efficiency. Minimum 92% AFUE required in Canada for most new gas furnaces. High-efficiency: 95–99%. Use the AFUE Calculator.
- HSPF2 (Heating Seasonal Performance Factor 2): Measures heat pump heating efficiency. Higher HSPF2 = more heat per dollar of electricity. Use the HSPF2 Calculator.
- COP (Coefficient of Performance): Instantaneous efficiency ratio at a specific condition. A COP of 3.0 means 3 units of heat delivered per unit of electricity consumed. See COP Calculator.
Heat Pump Economics in Canada
With Canadian electricity prices ranging from 7¢/kWh (Quebec hydro) to 18¢/kWh (Ontario), and natural gas at $0.30–$0.80/m³, the economics of heat pumps vs. gas furnaces vary significantly by province. The Heat Pump vs Gas Calculator uses your local utility rates and climate data to give a precise annual cost comparison, or try the Heat Pump vs Furnace Calculator for a dual-fuel switchover analysis. The Payback Period Calculator then tells you when you break even on the higher upfront cost.