Free Home Energy Calculators

Enerly offers 20+ free energy calculators for homeowners. Every calculator uses real local utility rates and current equipment costs — not national averages.

• Heat pump savings calculator — compare heat pump vs gas furnace annual cost
• Water heater savings calculator — heat pump water heater vs tank
• Smart thermostat savings — annual savings by climate zone
• Insulation savings calculator — attic insulation ROI by R-value
• Window replacement ROI — payback period for double or triple pane
• EV charging cost calculator — cost to charge at home vs public stations
• EV time-of-use savings — savings from off-peak charging
• Solar battery payback — Powerwall and home battery ROI
• LED retrofit savings — savings from switching to LED lighting
• Induction stove cost — induction vs gas cooking cost comparison
• Whole-home electrification — total cost and savings of going all-electric
• Panel upgrade cost — electrical panel upgrade calculator
• Phantom load calculator — standby power waste in your home
• Thermostat setback savings — savings from temperature setback schedules
• Laundry cost calculator — washer and dryer energy cost
• Pool pump VFD savings — variable speed pool pump ROI
• Solar pool heater ROI — payback for solar pool heating
• Roof solar readiness — assess your roof for solar installation
• Geothermal vs air source heat pump — cost and performance comparison
• Battery arbitrage calculator — earnings from time-of-use battery storage