Quick answer: A typical 1200-1500 watt clothes iron used for 15 minutes a day costs about $0.03-$0.04 per session, roughly $0.90-$1.15 per month, or $11-$14 per year in the US at $0.13/kWh. A steam iron used for a full weekly ironing session of 45-60 minutes costs around $0.10-$0.15 per session, or about $5-$7 per year for once-a-week use. Irons cycle on and off via a thermostat, so real running time is lower than the total time you spend ironing.
Clothes Iron Running Cost Calculator
How the Calculation Works
An iron’s thermostat cycles the heating element on and off to hold the set temperature, so it doesn’t draw its full wattage for the entire time you’re ironing. The calculator above uses a duty cycle (the percentage of time the element is actually heating) to give a more realistic cost than assuming full power the whole session:
Effective ON time = Session Minutes x (Duty Cycle % / 100)
Energy (kWh) = Wattage / 1000 x Effective ON Time (hours)
Cost = Energy (kWh) x Electricity Rate
Duty cycle is typically 50-70% for steady ironing at a moderate setting, and can be higher (70-85%) for heavy fabrics like denim or linen that need constant heat, or lower (30-45%) for light, quick touch-ups.
Typical Iron Wattage by Type
| Iron Type | Typical Wattage |
|---|---|
| Basic dry iron | 750-1000W |
| Standard steam iron | 1200-1500W |
| High-power/professional steam iron | 1800-2400W |
| Steam generator iron (with boiler unit) | 2000-3000W |
Worked Examples (US Average, $0.13/kWh)
| Scenario | Wattage | Session | Weekly Cost |
|---|---|---|---|
| Quick touch-up, 3x/week | 1200W | 10 min | ~$0.09 |
| Regular ironing, 3x/week | 1200W | 20 min | ~$0.19 |
| Big weekly session | 1500W | 60 min, once/week | ~$0.12 |
| Professional/high-power iron | 2200W | 30 min, daily | ~$1.20 |
Tips to Reduce Ironing Costs
- Iron clothes while slightly damp – they smooth out faster and need less heat/time.
- Sort clothes by fabric and iron low-heat items first, then move to higher settings, avoiding repeated temperature changes.
- Batch your ironing into one session per week instead of several short ones – fewer heat-up cycles overall.
- Use a self-cleaning/anti-scale iron to keep the soleplate gliding smoothly, reducing the time needed per garment.
- Unplug immediately after use – some irons have auto shut-off, but not all, and standby drain adds up over a year.
Frequently Asked Questions
How much electricity does an iron use per hour?
A 1200-1500W iron uses about 1.2-1.5 kWh per hour of continuous full-power use, but real usage is lower because the thermostat cycles the element off periodically – actual draw over an hour of ironing is often 0.6-0.9 kWh.
Is a steam iron more expensive to run than a dry iron?
Slightly, since steam irons are usually rated higher (1200-1500W vs 750-1000W for basic dry irons) and the boiler/steam function adds some extra draw, but the difference per session is usually just a few cents.
Does ironing use more electricity than a washing machine or dryer?
No. A tumble dryer or washing machine cycle typically uses far more energy (1-3 kWh per cycle) than a typical 15-30 minute ironing session (well under 1 kWh in most cases).
Why does my iron take so long to heat up?
This can indicate mineral scale buildup on the heating element (common with hard water and no descaling), a worn thermostat, or simply a lower-wattage model – all of which can increase total ironing time and cost.
Does a steam generator iron cost more to run than a regular steam iron?
Yes, generally. Steam generator irons have higher combined wattage (2000-3000W with the boiler unit) but they heat up fast and produce steam continuously, so a full session can sometimes be quicker overall despite the higher wattage.
How much does ironing cost per year for an average household?
Ironing 20 minutes, 3 times a week with a 1200W iron at a 60% duty cycle costs roughly $10-13 a year at US average electricity rates – a small fraction of most household appliance costs.
Does leaving an iron plugged in but off use electricity?
Most modern irons draw negligible power when off but still plugged in, though irons with digital displays or auto-off timers may use a very small standby amount – generally well under $1 a year.
Can a lower duty cycle estimate make a big cost difference?
Yes. Since duty cycle directly scales the effective ON time, dropping from 70% to 40% roughly cuts your estimated cost by nearly half for the same ironing time, so it’s worth adjusting the field above to match your iron and fabric type.
Ironing is one of the cheapest regular household electricity uses – typically just a few dollars a year even for weekly sessions – but the calculator above helps you see the exact number for your iron’s wattage, your ironing habits, and your local electricity rate, whether you’re budgeting a full household energy plan or just curious.