Dishwasher Cost Calculator
Calculate dishwasher operating cost per cycle, week, and year by combining electrical kWh, water gallons per cycle, and dish detergent pod/rinse aid expenses.
Dishwasher Cycle & Rate Inputs
910 gallons & 273.0 kWh per year
Dishwasher Cost Per Cycle Formula
Cost Per Cycle = (Energy kWh ร Electric Rate) + (Water Gallons รท 1,000 ร Water Rate) + Detergent Cost- Electricity Cost Per Cycle = kWh per cycle ร Electricity Rate ($/kWh).
- Water Cost Per Cycle = (Gallons per cycle รท 1,000) ร Water Rate ($/1,000 gallons).
- Annual Cost = Cost Per Cycle ร Cycles Per Week ร 52.
Step-by-Step Worked Example
Calculation Steps:
- Electricity Cost = 1.05 ร $0.168 = $0.1764; Water Cost = 0.0035 ร $6.50 = $0.0228
- Total Cost Per Cycle = $0.1764 + $0.0228 + $0.22 = $0.4192 (~$0.42/cycle)
- Annual Cost (260 cycles) = $0.4192 ร 5 ร 52 = $108.99/year
How to Use This Calculator
- 1Enter the electrical energy (kWh) and water volume (gallons) used per dishwasher cycle.
- 2Input your local electricity price per kWh and water price per 1,000 gallons.
- 3Enter how many cycles you run per week and optional detergent pod or rinse aid cost per cycle.
Assumptions & Limitations
- Energy per cycle includes internal booster heater and heated dry element if part of your entered kWh figure.
- Uses 52 weeks per year for annual projections.
Frequently Asked Questions
How much water does a modern dishwasher use compared to hand washing?
Standard ENERGY STAR dishwashers use 3.2 to 5.0 gallons of water per cycle, whereas washing a full load of dishes by hand with a running faucet often uses 15 to 27 gallons.
Does turning off Heated Dry save electricity?
Yes. Using air-dry or auto-open door drying instead of the resistance heating element during the dry phase typically reduces per-cycle electricity consumption by 15% to 30%.
Why does detergent often cost more per cycle than the water and electricity combined?
At 3.5 gallons and 1 kWh, water and power cost roughly $0.20 per load, whereas premium multi-chamber dish pods often cost $0.25 to $0.35 each.
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