Dishwashers are often seen as energy-hungry appliances. But modern models are surprisingly efficient.
So how much does it actually cost to run a dishwasher per cycle — and per month?
Let’s break it down clearly.
Quick Answer
The average dishwasher uses:
👉 1–2 kWh per cycle
👉 3–6 gallons of water per cycle
Electricity cost at $0.16 per kWh:
1 kWh → $0.16
2 kWh → $0.32
Water cost per cycle:
$0.02 – $0.06
Total per cycle:
👉 $0.20 – $0.40
If used 20 times per month:
👉 $4 – $8 per month
Average Electricity Cost per kWh by State (2026 U.S. Data)
Average Water Bill in the U.S. (2026 State-by-State Breakdown)
Dishwasher Energy Use by Type
| Type | kWh per Cycle | Cost per Cycle |
|---|---|---|
| Standard model | 1.5 – 2 | $0.24 – $0.32 |
| Energy Star | 1 – 1.5 | $0.16 – $0.24 |
| Heavy-duty cycle | 2+ | $0.32+ |
Energy Star models use up to 15% less energy.
Is a Dishwasher Cheaper Than Hand Washing?
Surprisingly, yes.
Hand washing can use:
- 15–20 gallons of water
- More hot water heating
Dishwashers are typically more efficient — especially when fully loaded.
What Affects Dishwasher Cost?
- Heated drying mode
- Water heater efficiency
- Pre-rinsing dishes
- Cycle length
- Age of appliance
Heating water accounts for most energy consumption.
Gas vs Electric Water Heater: Which Costs Less to Run?
Annual Dishwasher Cost
If used 5 times per week:
5 × 52 = 260 cycles
At $0.30 per cycle:
👉 $78 per year
That’s a relatively small portion of total home energy usage.
How Much Does It Cost to Power a House for One Day?
How to Reduce Dishwasher Energy Cost
- Run only full loads
- Skip heated drying
- Use eco mode
- Avoid pre-rinsing
- Maintain spray arms
Dishwasher vs Other Appliances
| Appliance | Monthly Cost |
|---|---|
| Refrigerator | $4 – $12 |
| Dishwasher | $4 – $8 |
| Dryer | $6 – $14 |
| Air Conditioner | $60 – $150 |
How Much Does It Cost to Run a Dryer?
How Much Does It Cost to Run a Refrigerator Per Month?
FAQ
Does a dishwasher use a lot of electricity?
No. Most modern models cost less than $0.40 per cycle.
Is it cheaper to run a dishwasher at night?
If your utility has off-peak rates, yes.
How much water does a dishwasher use?
Most modern models use between 3 and 6 gallons per cycle.
Should I turn off heated dry?
Yes. It can reduce energy use by 15–20%.
Final Thoughts
Running a dishwasher typically costs less than $10 per month for most households.
When used efficiently, it’s often cheaper than hand washing dishes.
Understanding appliance-level costs helps you better estimate your total monthly electricity and water expenses.
