PECOL PACIFIC ENGINEERING SDN BHD
Energy Efficiency Solutions(1568016-M)
Pecol instant water heaters heat water the moment it flows, so you get a hot shower in seconds with no tank to wait for. Choose from compact 3.5 to 6 kW heaters for showers, basins and kitchen sinks, up to high-power 12 kW and 24 kW three-phase models for bigger hot water demand.
Instant Water Heater · full range
Every Pecol instant electric water heater, from slim 3.5 kW shower heaters to a 24 kW three-phase unit. Tap a brochure for full technical details, or WhatsApp us for a quote.
Black front panel with a large LED display, constant temperature and a 304 stainless steel heating tube.
View details →Brochure (PDF)
Very compact 210 × 150 mm heater with a digital display, adjustable from 30 to 65°C.
View details →Brochure (PDF)
Rounded compact heater with a rotary knob and red LED temperature display.
View details →Brochure (PDF)
Keeps the water within ±0.5°C of the setting, with status lights and a rotary knob.
View details →Brochure (PDF)
Slim 110 mm wide heater with a ribbed grey body and digital display, up to 55°C.
View details →Brochure (PDF)
Slim white heater with a touch display, 5500 W for a stronger hot shower, up to 55°C.
View details →Brochure (PDF)
Large black front panel with digital display, 12 kW for a strong hot water flow, 30–65°C.
View details →Brochure (PDF)
High-power 380 V three-phase heater with a large digital display and 16, 18, 21 or 24 kW power.
View details →Brochure (PDF)An instant water heater, also called a tankless or on-demand water heater, has no storage tank. When you open the shower or tap, cold water flows past a powerful electric heating element and comes out hot within seconds. When you close the tap, the heater switches off, so it only uses electricity while you are using hot water and there is no tank losing heat all day.
Because there is no tank, an instant water heater is small enough to mount on the bathroom wall beside the shower or under a basin. Most Pecol models list a starting water pressure of 0 MPa in the brochure, and every model is rated IPX4 against water splashes.
Water is heated as it flows, so there is no tank to wait for.
Most models show the water temperature on an LED or touch display.
Selected models hold the temperature steady, one to within ±0.5°C.
Choose 3.5, 4.5 or 5.5 kW, or 16 to 24 kW on the three-phase model.
From just 110 × 60 × 230 mm, easy to fit beside a shower or sink.
Cast aluminium, steel cup or stainless steel heating tubes.
Every model is rated IPX4 for bathroom installation.
Single-phase heaters for homes and a 380 V three-phase unit for bigger demand.
The more water that flows through an instant heater, the less it can warm each litre. The table shows how many degrees each heater power can raise the water at different flow rates. It is a theoretical figure that ignores small heat losses.
| Water flow | 3.5 kW | 4.5 kW | 5.5 kW | 6 kW |
|---|---|---|---|---|
| 2 L/min | 25°C | 32°C | 39°C | 43°C |
| 3 L/min | 17°C | 22°C | 26°C | 29°C |
| 4 L/min | 13°C | 16°C | 20°C | 22°C |
| 5 L/min | 10°C | 13°C | 16°C | 17°C |
| 6 L/min | 8°C | 11°C | 13°C | 14°C |
Tap water in Malaysia is usually around 27 to 30°C, and most people find a shower of about 38 to 42°C comfortable, so you only need a rise of about 10 to 15°C. A 3.5 kW heater is enough for one shower at a gentle flow, 5.5 to 6 kW gives a stronger shower, and the 12 kW and 24 kW models suit high-flow showers or bigger demand.
| Instant water heater | Storage water heater | |
|---|---|---|
| How it heats | Heats water only while it flows | Heats and stores a tank of water |
| Waiting time | Hot water in seconds | Wait for the tank to heat up first |
| Hot water supply | Continuous while the tap is open | Limited to the tank size |
| Size | Small, wall-mounted | Larger tank (6 L to 500 L and more) |
| Standby heat loss | None, no stored water | Some heat lost from the tank |
| Power drawn | High while running (3.5 – 24 kW) | Lower (about 1.5 – 2.2 kW for home units) |
| Best for | One shower or tap at a time | Several outlets, bathtubs, kitchens |
Choose an instant water heater for a single shower or sink where you want hot water straight away. If you need hot water for several bathrooms at the same time, or for a bathtub, a storage water heater or an energy-saving heat pump water heater is usually the better choice.
Instant water heaters draw a high current while the water is running: from about 16 A for a 3.5 kW unit to over 60 A for the 12 kW and 24 kW models. Each heater should be on its own circuit breaker with a cable sized for the load, and installed by a qualified electrician. The 24 kW model needs a 380 V three-phase supply.
Not sure which heater you need? WhatsApp us where it will be used and what power supply you have, and we will recommend the right model.
