Size by bathroom
| Bathroom use | Suggested size | Pecol models |
|---|---|---|
| Single shower, 1 person | 23–34 L | PPS 23, PPS 25, PPS 27, PPS 34 |
| Shower, 2 people back to back | 45–57 L | PPS 45, PPS 57 |
| Rain shower or 3 people | 68–91 L | PPS 68, PPS 91 |
| Bathtub or master bathroom | 114–136 L | PPS 114, PPS 136 |
| Whole house from one tank | 182 L and above | PPS 182, PPS 227 or a heat pump |
Whole-house size calculator
Suggested tank size–
Pecol models to consider–
Rule of thumb: about 50 litres of hot water per person per day at 55°C, plus extra for more bathrooms and bathtubs. Pecol will confirm the size after a site check.
Heating time tables
| Model | Litres | Imp. gal | Dimension (mm) | Weight (kg) | Power (single phase) | Heating time 28→60°C |
|---|---|---|---|---|---|---|
| PPS 23 | 23 | 5 | Ø360 × 460 | 13.5 | 3 kW | 17 min |
| PPS 25 | 25 | 5.5 | Ø360 × 508 | 14.9 | 3 kW | 19 min |
| PPS 27 | 27 | 6 | Ø360 × 560 | 16.2 | 3 kW | 20 min |
| PPS 34 | 34 | 7.5 | Ø360 × 610 | 16.3 | 3 kW | 25 min |
| PPS 45 | 45 | 10 | Ø360 × 760 | 19.2 | 3 kW | 34 min |
| PPS 57 | 57 | 12.5 | Ø460 × 610 | 21.3 | 3 kW | 42 min |
| PPS 68 | 68 | 15 | Ø460 × 710 | 23.0 | 3 kW | 50 min |
| PPS 91 | 91 | 20 | Ø460 × 880 | 35.3 | 3 kW | 67 min |
| PPS 114 | 114 | 25 | Ø460 × 1040 | 28.2 | 3 kW | 84 min |
| PPS 136 | 136 | 30 | Ø460 × 1220 | 42.3 | 3 kW | 101 min |
| Model | Litres | Imp. gal | Dimension (mm) | Weight (kg) | Power | Heating time 28→60°C |
|---|---|---|---|---|---|---|
| PPS 136 | 136 | 30 | Ø510 × 1220 | 54.7 | 9 kW, 3 phase | 33 min |
| PPS 182 | 182 | 40 | Ø510 × 1600 | 67.6 | 9 kW, 3 phase | 45 min |
| PPS 227 | 227 | 50 | Ø510 × 1950 | 80.1 | 9 kW, 3 phase | 56 min |
| PPS 273 | 273 | 60 | Ø610 × 1600 | 93.0 | 9 kW, 3 phase | – |
| PPS 341 | 341 | 75 | Ø610 × 1930 | 112.5 | 9 kW, 3 phase | – |
| PPS 364 | 364 | 80 | Ø610 × 2040 | 117.6 | 9 kW, 3 phase | – |
| PPS 454 | 454 | 100 | Ø740 × 1650 | 142 | 9 kW | 112 min |
| PPS 908 | 908 | 200 | Ø990 × 1750 | 256 | 18 kW | 112 min |
| PPS 1362 | 1,362 | 300 | Ø990 × 2350 | 331 | 18 kW | 168 min |
| PPS 1816 | 1,816 | 400 | Ø1400 × 1900 | 408 | 18 kW | 225 min |
| PPS 2270 | 2,270 | 500 | Ø1400 × 2300 | 464 | 27 kW | 187 min |
| PPS 3632 | 3,632 | 800 | Ø1700 × 2400 | 649 | 27 kW | 300 min |
| PPS 4540 | 4,540 | 1,000 | Ø1700 × 2800 | 753 | 36 kW | 281 min |
| PPS 6810 | 6,810 | 1,500 | Ø2000 × 3000 | 1,270 | 36 kW | 422 min |
| PPS 9080 | 9,080 | 2,000 | Ø2000 × 3800 | 1,951 | 54 kW | 375 min |
Larger sizes (454 L and above) are customised to the requirement; power shown is the rating used for the heating time. Other sizes between those listed are available.
Tips to save electricity
- Set the thermostat to 55–60°C; higher settings waste energy.
- Insulate hot water pipes, especially long runs.
- Choose the right size: an oversized tank keeps more water hot than you use.
- Fix dripping hot taps promptly.
- For three or more people, consider a heat pump water heater to cut water heating electricity by about 75%.
Frequently asked questions
How many litres of water heater do I need for one bathroom?
About 23–45 L for a shower-only bathroom, or 68–136 L for long showers or a bathtub.
How long does a 136 L water heater take to heat?
About 101 minutes from 28°C to 60°C with a 3 kW element, or 33 minutes with a 9 kW three-phase element.