"Is buying a dishwasher for tens of millions of VND, plus dishwashing tablets, salt, rinse aid... more expensive than washing by hand?" This is a question many families ask before investing. The detailed analysis below will provide you with the answer.
1. Water Consumption Comparison
This is a surprising point for many:
| Washing Method | Water Volume/Wash |
|---|---|
| Handwashing (for a family meal of 4) | 40-80 liters |
| Dishwasher Eco mode | 8-12 liters |
| Dishwasher Standard mode | 12-18 liters |
Dishwashers save up to 70-80% of water compared to handwashing.
2. Electricity Consumption Comparison
Dishwashers consume electricity to heat water and dry. But compared to:
- Handwashing with cold water: no electricity cost but poor sterilization, easily tires hands
- Handwashing with hot water from a water heater: high electricity consumption, potentially equivalent to or more than a dishwasher
Each time a dishwasher runs an Eco cycle, it consumes approximately 0.8-1.2 kWh, equivalent to about 2,500-3,500 VND in electricity costs.
3. Total Cost Per Wash Calculation
Assuming a family washes once a day:
Dishwasher (Eco mode):
- Electricity: ~3,000 VND
- Water: ~250 VND
- 1 Largo Classic dishwashing tablet: ~3,800 VND (see price)
- Salt + rinse aid (divided per wash): ~500 VND
- Total: ~7,550 VND/wash
Handwashing:
- Water: ~1,500-2,500 VND
- Dish soap: ~1,000 VND
- Hot water (if used): ~1,500 VND
- Total: ~4,000-5,000 VND/wash
- + Intangible costs: time (30-60 minutes), effort, hand damage
4. Intangible Factors: Time and Health
Handwashing for 30-60 minutes/day is equivalent to:
- ~15-30 hours/month spent on dishwashing
- Dry, cracked hands due to chemical exposure
- Back pain from bending over
- Stress after meals
If the value of time is set at 50,000 VND/hour, you lose 750,000-1,500,000 VND/month just for washing dishes.
5. Tips for Maximum Savings When Using a Dishwasher
- Always run a full load: don't wash when there are only a few dishes
- Use Eco mode for normal dishes
- Buy tablets in bulk for a better price per tablet: Combo 3 Largo
- Choose tablets imported directly from Germany (no intermediaries): Largo has a better price per tablet than Finish with the same European quality
- Utilize off-peak electricity hours (if you have a 3-rate EVN meter)
Conclusion
In terms of "surface" costs, a dishwasher is slightly more expensive. But considering:
- 70-80% water savings
- 15-30 hours/month time savings
- Health protection, improved quality of life
- Better sterilization due to high temperatures
A dishwasher is an investment in time and health, not purely a money-saving one. If you want to optimize operating costs, choose dishwashing tablets with a good price per tablet, like Largo imported directly from Germany - EU quality, better price thanks to EVFTA tax incentives.