Home Energy Calculators

Use these home energy calculators for electricity use, appliances, HVAC, heating, cooling, insulation, solar, batteries, and energy costs.

Electricity bills and appliance costs

• AC Replacement Cost Calculator
• AC Tune Up Cost Calculator
• Air Conditioner Running Cost Calculator
• Air Fryer Running Cost Calculator
• Air Fryer vs Oven Cost Calculator
• Air Purifier Running Cost Calculator
• Air-to-Air vs Air-to-Water Heat Pump Lifetime Cost Calculator
• Appliance Energy Cost Calculator
• Appliance Replacement Payback Calculator
• Aquarium Heater Size and Electricity Cost Calculator
• Bathroom Exhaust Fan Heat Loss Cost Calculator
• Boiler Running Cost Calculator
• Boiler Short Cycling Energy Cost Calculator
• Boiler vs Furnace Lifetime Cost Calculator
• Boiling Water Tap vs Electric Kettle Lifetime Cost Calculator
• Bypass vs Fan-Powered vs Steam Humidifier Cost Calculator
• Ceiling Fan Running Cost Calculator
• Chest Freezer vs Upright Freezer Cost Calculator
• Cold Plunge Chiller Size and Electricity Cost Calculator
• Cold-Climate vs Standard Heat Pump Lifetime Cost Calculator
• Combi Boiler vs Separate System Lifetime Cost Calculator
• Computer Electricity Cost Calculator
• Condensing vs Non-Condensing Tankless Cost Calculator
• Convection vs Conventional Oven Energy Cost Calculator
• Crawl Space Encapsulation Cost Payback Calculator
• DC vs AC Ceiling Fan Lifetime Cost Calculator
• Dehumidifier Running Cost Calculator
• Desiccant vs Compressor Dehumidifier Lifetime Cost Calculator
• Dishwasher Running Cost Calculator
• Dishwasher vs Hand Washing Cost Calculator
• Domestic Water Booster Pump Size and Electricity Cost Calculator
• Dryer Running Cost Calculator
• Dual-Hose vs Single-Hose Portable AC Lifetime Cost Calculator
• Duct Leakage Cost Calculator
• Duct Sealing vs Duct Replacement Cost Calculator
• Ducted vs Unducted Heat Pump Water Heater Cost Calculator
• Ductwork Installation Cost per Linear Foot Calculator
• Electric Baseboard Heating Cost Calculator
• Electric Blanket vs Space Heater Cost Calculator
• Electric Fireplace Running Cost Calculator
• Electric Heater Running Cost Calculator
• Electric Stove Running Cost Calculator
• Electric vs Propane Patio Heater Lifetime Cost Calculator
• Electric Water Heater Cost Calculator
• Electricity Bill Credit Plan Cost Calculator
• Electricity Bill Forecast Calculator
• Electricity Bill Increase Calculator
• Electricity Contract Exit Fee Break-Even Calculator
• Electricity Usage from Meter Readings Calculator
• Espresso Machine Electricity Cost Calculator
• Evaporative Cooler Running Cost Calculator
• Evaporative Cooler vs AC Cost Calculator
• Exhaust-Only vs Balanced Ventilation Lifetime Cost Calculator
• Fixed vs Variable Electricity Rate Calculator
• Free Nights vs Flat-Rate Electricity Plan Calculator
• Freezer Running Cost Calculator
• French Door vs Side-by-Side Refrigerator Lifetime Cost Calculator
• Furnace Fan Electricity Cost Calculator
• Furnace Replacement Cost Calculator
• Furnace Running Cost Calculator
• Furnace Tune Up Cost Calculator
• Gaming PC vs Game Console Lifetime Electricity Cost Calculator
• Garage Heater Running Cost Calculator
• Garage Mini Split vs Gas Unit Heater Lifetime Cost Calculator
• Gas vs Electric Dryer Cost Calculator
• Gas vs Electric Fireplace Cost Calculator
• Gas vs Electric Heating Cost Calculator
• Gas vs Electric Oven Lifetime Cost Calculator
• Gas vs Electric Water Heater Cost Calculator
• Gas Water Heater Cost Calculator
• Geothermal Horizontal vs Vertical Loop Cost Calculator
• Greenhouse Heating Cost Calculator
• Heat Battery vs Hot Water Cylinder Lifetime Cost Calculator
• Heat Pump Auxiliary Heat Cost Calculator
• Heat Pump Radiator Size and Upgrade Cost Calculator
• Heat Pump Replacement Cost Calculator
• Heat Pump Running Cost Calculator
• Heated Driveway Operating Cost Calculator
• Heating Oil Cost Calculator
• High-Velocity vs Conventional HVAC Lifetime Cost Calculator
• Home Energy Cost Calculator
• Home Heating Fuel Cost Calculator
• Home Water Distiller vs Bottled Water Lifetime Cost Calculator
• Home-Run PEX vs Trunk-and-Branch Cost Calculator
• Hot Tub Electricity Cost Calculator
• Hot Water Recirculation Pump Cost Calculator
• HRV vs ERV Operating Cost Calculator
• Humidifier Running Cost Calculator
• HVAC Fan On vs Auto Cost Calculator
• HVAC Filter Pressure Drop Energy Cost Calculator
• HVAC Installation Cost Calculator
• HVAC Maintenance Cost Calculator
• HVAC Replacement Cost Calculator
• HVAC UV Light Installation and Operating Cost Calculator
• Hydronic vs Electric Radiant Floor Heating Cost Calculator
• ICF vs Wood-Frame Lifetime Energy Cost Calculator
• Induction vs Electric Coil Cooktop Lifetime Cost Calculator
• Induction vs Gas Stove Cost Calculator
• Infrared vs Traditional Sauna Lifetime Cost Calculator
• Instant Pot Running Cost Calculator
• Insulated vs Standard Siding Energy Cost Calculator
• Interior vs Exterior Wall Insulation Cost Calculator
• Metal Roof vs Asphalt Shingle Lifetime Energy Cost Calculator
• Microwave Running Cost Calculator
• Microwave vs Oven Energy Cost Calculator
• Mini Split Installation Cost Calculator
• Mini Split Running Cost Calculator
• Mini Split vs Central Air Cost Calculator
• Monobloc vs Split Air-to-Water Heat Pump Lifetime Cost Calculator
• Open Fireplace vs Fireplace Insert Heating Cost Calculator
• Oven Running Cost Calculator
• Packaged HVAC vs Split System Lifetime Cost Calculator
• Pellet Stove Running Cost Calculator
• Pool Heat Pump vs Gas Heater Lifetime Cost Calculator
• Pool Heater Running Cost Calculator
• Pool Leak Water and Heating Cost Calculator
• Pool Pump Running Cost Calculator
• Portable AC Running Cost Calculator
• Portable AC vs Window AC Cost Calculator
• Portable vs Standby Generator Lifetime Cost Calculator
• Propane Heating Cost Calculator
• Radiant Floor Heating Cost Calculator
• Radon Fan Electricity Cost Calculator
• Range Hood Makeup Air Heating and Cooling Cost Calculator
• Refrigerator Running Cost Calculator
• Robotic vs Suction Pool Cleaner Lifetime Cost Calculator
• Roof De-Icing Cable Electricity Cost Calculator
• Salt-Based vs Salt-Free Conditioner Cost Calculator
• Second Refrigerator Energy Cost Calculator
• Septic Aerator Electricity Cost Calculator
• Shower Energy Cost Calculator
• Single-Zone vs Multi-Zone Mini Split Cost Calculator
• Skylight Heat Gain and Annual Energy Cost Calculator
• Slow Cooker Running Cost Calculator
• Space Heater Running Cost Calculator
• Spray Foam vs Fiberglass Insulation Lifetime Cost Calculator
• Steam Shower Generator Size and Operating Cost Calculator
• Sump Pump Electricity Cost Calculator
• Tank vs Tankless Water Heater Cost Calculator
• Tankless Water Heater Cost Calculator
• Tiered Electricity Bill Calculator
• Time-of-Use Electricity Cost Calculator
• Toaster Oven Running Cost Calculator
• Top Load vs Front Load Washer Lifetime Cost Calculator
• TV Running Cost Calculator
• Vented vs Conditioned Attic Lifetime Energy Cost Calculator
• Vinyl vs Fiberglass vs Wood Window Lifetime Cost Calculator
• Washable vs Disposable HVAC Filter Lifetime Cost Calculator
• Washer-Dryer Combo vs Separate Units Lifetime Cost Calculator
• Washing Machine Running Cost Calculator
• Water Heater Running Cost Calculator
• Water Heater UEF Operating Cost Calculator
• WaterSense vs Standard RO Lifetime Cost Calculator
• Well Pump Electricity Cost Calculator
• Whole House Fan vs AC Cost Calculator
• Whole-House vs Under-Sink Water Filter Lifetime Cost Calculator
• Window AC Running Cost Calculator
• Window AC vs Central Air Cost Calculator
• Window AC vs Mini Split Lifetime Cost Calculator
• Window Heat Loss Cost Calculator
• Window Heat Pump vs AC and Space Heater Cost Calculator
• Wine Cellar Cooling Load and Operating Cost Calculator
• Wood Stove vs Pellet Stove Cost Calculator

Heating and cooling

• 120V vs 240V Heat Pump Water Heater Calculator
• Air Source vs Ground Source Heat Pump Calculator
• Dual Fuel Heat Pump Balance Point Calculator
• Furnace Airflow from Temperature Rise Calculator
• Furnace Repair or Replace Calculator
• Furnace Size Calculator
• Geothermal Heat Pump Payback Calculator
• Heat Pump Buffer Tank and Volumizer Size Calculator
• Heat Pump COP Calculator
• Heat Pump Dryer Savings Calculator
• Heat Pump Savings Calculator
• Heat Pump Size from Heating Fuel Use Calculator
• Heat Pump vs Boiler Calculator
• Heat Pump vs Electric Resistance Heating Calculator
• Heat Pump vs Furnace Calculator
• Heat Pump vs Oil Furnace Calculator
• Heat Pump vs Propane Calculator
• Heat Pump Water Heater Savings Calculator
• Heating Oil Fixed-Price vs Price-Cap Contract Calculator
• HSPF, HSPF2, EER and COP Heat Pump Efficiency Converter
• HVAC Filter Size Calculator
• HVAC Load Calculator
• Mini Split Size Calculator
• Pool Cover Heating Savings Calculator
• Steam-to-Hot-Water Heating Conversion Payback Calculator
• Variable Speed vs Single Stage HVAC Savings Calculator
• Zoned HVAC Savings Calculator

Insulation and weatherization

• Attic Insulation Calculator
• Basement Insulation Savings Calculator
• Blower Door Test Calculator
• Boiler Outdoor Reset Control Payback Calculator
• Crawl Space Insulation Calculator
• Door Weatherstripping Savings Calculator
• Double-Pane vs Triple-Pane Window Payback Calculator
• Duct Insulation Savings Calculator
• Exterior Door Replacement Energy Savings and Payback Calculator
• Garage Insulation Savings Calculator
• Hot Water Pipe Insulation Savings Calculator
• Insulation Savings Calculator
• Rim Joist Insulation Savings Calculator
• Slab Edge Insulation Savings and Payback Calculator
• Storm Window Savings Calculator
• Wall Insulation Calculator
• Weather Normalized Home Energy Calculator
• Window Condensation Risk Calculator
• Window Film Energy Savings Calculator
• Window Replacement Energy Savings Calculator

Solar and battery planning

• Solar Pool Heater Payback Calculator
• Solar Water Heater Payback Calculator
• Monthly Solar Energy Calculator by Location

Water heating and household loads

• Clothesline vs Dryer Savings Calculator
• Dehumidifier Size Calculator
• Dryer Vent Cleaning Energy Savings Calculator
• Variable Speed Pool Pump Savings Calculator
• Water Heater Recovery Time Calculator
• Water Heater Repair or Replace Calculator
• Water Heater Size Calculator
• Water Heater Temperature Savings Calculator
• Water Heater Timer Savings Calculator

Other home energy calculators

• AC Energy Savings Calculator
• AC Repair or Replace Calculator
• AC Size Calculator
• AFUE Savings Calculator
• Air Changes per Hour Calculator
• Air Purifier Size Calculator
• Air Sealing Savings Calculator
• Attic Fan Size Calculator
• Boiler Replacement Savings Calculator
• Ceiling Fan Size Calculator
• Ceiling Fan vs AC Savings Calculator
• Cellular Shades Energy Savings and Payback Calculator
• CFM Calculator
• Cool Roof Energy Savings Calculator
• Drain Water Heat Recovery Savings Calculator
• Duct Sealing Savings Calculator
• Duct Size Calculator
• Gas Meter Removal Break-Even Calculator
• Graywater Recycling System Size and Payback Calculator
• High Heat Retention Storage Heater Upgrade Payback Calculator
• Home Air Leakage Calculator
• Home Electrification Savings Calculator
• Home Wind Turbine Payback Calculator
• HRV and ERV Sizing Calculator
• Hydronic Circulator Pump Size and ECM Upgrade Payback Calculator
• Hydronic Expansion Tank Size and Precharge Calculator
• Low-Flow Showerhead Savings Calculator
• Propane Tank Rental vs Purchase Calculator
• Radiant Barrier Savings Calculator
• Rainwater Harvesting System Size and Payback Calculator
• Range Hood CFM and Duct Size Calculator
• Return Air Grille Size Calculator
• Room BTU Calculator
• Sauna Heater Size and Electrical Circuit Calculator
• SEER2 Savings Calculator
• Smart Plug Payback Calculator
• Smart Thermostat Savings Calculator
• Smart Thermostatic Radiator Valve Payback Calculator
• Steam Radiator EDR and Boiler Size Calculator
• Thermostat Savings Calculator
• Thermostatic Shower Shutoff Savings Calculator
• Water PRV Savings and Payback Calculator
• Well Pressure Tank Size and Pump Cycling Calculator
• Whole House Fan Calculator
• Whole-House Leak Shutoff Payback Calculator