Details
OneWave OW150 Solar Water Heater Malaysia
150L Pressurized Solar Hot Water System for Up to 4 Users
Looking for an energy-efficient hot water system for a smaller household?
The OneWave OW150 Solar Water Heater combines a 150-litre pressurized storage tank with 12 evacuated heat-pipe tubes to provide reliable solar hot water for small to medium-sized families.
Designed for up to 4 users, the OW150 is suitable for landed homes, terrace houses, smaller households and properties with moderate daily hot water demand.
Its closed-loop heat-pipe system uses solar energy as the primary heat source, helping homeowners reduce dependence on conventional electric water heating.
Is Your Current Water Heater Increasing Your Electricity Usage?
Conventional electric water heaters rely entirely on electricity whenever hot water is required.
For households that use hot water every day, this may result in:
- Higher monthly electricity consumption
- Dependence on electric heating
- Inconsistent hot water during high usage periods
- Limited hot water storage
- Longer waiting time between users
- Increased inconvenience during morning and evening peak hours
A water heating system that is too small may also struggle when several family members shower consecutively.
Daily Hot Water Demand Should Not Be Ignored
When a household depends completely on electrical heating, every shower adds to the property’s electricity usage.
The problem may become more noticeable when:
- Several users shower one after another
- Hot water is required in more than one bathroom
- The existing heater has limited capacity
- Water temperature fluctuates
- Electricity tariffs increase
- The household requires hot water every day
Choosing the correct solar water heater capacity helps balance comfort, energy usage and installation cost.
The Solution — OneWave OW150
The OneWave OW150 is designed for households that need a practical, pressurized solar hot water solution without installing an oversized system.
Its key features include:
- 150-litre storage tank
- Suitable for up to 4 users
- 12 evacuated heat-pipe tubes
- 90%–94% manufacturer-stated collector efficiency
- Pressurized hot water system
- Closed-loop solar collector design
- Indirect heating system
- SUS304L stainless steel inner tank
- 50mm high-density insulation
- Automatic backup heater
- Water temperature controller
- Magnesium rod tank protection
The system collects solar energy during the day and stores heated water for later use. When solar energy is insufficient, the integrated backup heater can provide additional heating support.
Key Benefits of the OneWave OW150
150L Capacity for Up to 4 Users
The OW150 provides a 150-litre hot water storage capacity, making it suitable for smaller households with moderate daily usage.
It is recommended for up to four users, depending on:
- Shower duration
- Water temperature setting
- Daily hot water consumption
- Number of bathrooms
- Simultaneous usage
- Weather conditions
A site and usage assessment is recommended before installation.
12 Evacuated Heat-Pipe Tubes
The OneWave OW150 is equipped with 12 evacuated heat-pipe collector tubes.
The tubes absorb solar radiation and transfer heat into the storage tank through conductive copper heat pipes.
This system helps:
- Capture solar energy efficiently
- Reduce dependence on electrical heating
- Support daily household hot water requirements
- Improve heating performance under suitable sunlight
- Provide a practical system size for smaller families
Efficient Heat-Pipe Technology
Each evacuated tube contains a copper heat pipe that transfers collected solar heat into the storage tank.
Domestic water does not flow directly through the external evacuated tubes.
This provides several practical advantages:
- Lower risk of water leakage if one tube is damaged
- Independent tube operation
- Easier individual tube replacement
- Better suitability for pressurized systems
- Reduced direct contact between household water and collector components
Closed-Loop Indirect Heating System
The OneWave OW150 uses a closed-loop indirect heating system.
Instead of allowing household water to flow through the solar collector tubes, heat is transferred through the heat-pipe system into the storage tank.
This design helps provide:
- Improved system reliability
- Reduced collector leakage risk
- More stable heat transfer
- Easier maintenance
- Better compatibility with pressurized household plumbing
Pressurized Hot Water Supply
The OneWave OW150 has a manufacturer-stated pressurized tank rating of 850kPa.
This makes it suitable for homes that require stronger and more consistent hot water flow, subject to the existing plumbing configuration.
Actual water flow performance depends on:
- Incoming water pressure
- Water pump system
- Pipe diameter
- Plumbing condition
- Number of outlets used simultaneously
The property’s water pressure should be checked before installation.
SUS304L Stainless Steel Inner Tank
The OW150 uses a SUS304L stainless steel inner tank for hot water storage.
Its storage tank construction includes:
- SUS304L inner tank
- SUS304L heat exchange socket
- 304 stainless steel outer casing
- Magnesium rod protection
- Temperature and pressure relief valve
This construction supports reliable pressurized operation and long-term durability.
Magnesium Rod Tank Protection
The magnesium rod helps protect the inner tank by attracting corrosive elements before they affect the tank body.
Regular inspection and replacement of the magnesium rod, when required, can help:
- Reduce internal corrosion
- Protect the storage tank
- Extend system lifespan
- Maintain long-term performance
50mm High-Density Tank Insulation
The storage tank uses 50mm high-density pressure-injected polyurethane foam insulation.
This insulation helps retain stored heat and reduce temperature loss after sunlight hours.
Customer benefit
Hot water collected during the day can remain available for evening or early morning use.
Automatic Backup Heating Support
During rainy weather, cloudy conditions or higher-than-usual hot water demand, the integrated backup heater can provide additional heating support.
The OW150 includes:
- 3kW DN25 Incoloy 800 backup heating element
- Water temperature reading
- Automatic backup heater control
- Thermostat
- Temperature and pressure protection
This helps maintain hot water availability when solar energy is temporarily insufficient.
Who Is the OneWave OW150 Suitable For?
The OneWave OW150 is recommended for:
- Households with up to 4 users
- Small to medium-sized families
- Couples and young families
- Terrace houses
- Smaller landed homes
- Homes with moderate daily hot water usage
- Properties upgrading from conventional electric heating
- Households requiring pressurized hot water
For households with more than four users or heavier hot water demand, the OneWave OW300 may be more suitable.
OneWave OW150 vs OW300 vs OW300 Xtreme
| Feature | OW150 | OW300 | OW300 Xtreme |
|---|---|---|---|
| Tank capacity | 150L | 300L | 300L |
| Recommended users | Up to 4 | Up to 7 | Up to 9 |
| Vacuum tube quantity | 12 | 22 | 30 |
| Stated collector efficiency | 90%–94% | 90%–94% | 99% |
| Inner tank material | SUS304L | SUS304L | SUS316L |
| Empty weight | 68kg | 108kg | 118kg |
| Full operating weight | 223kg | 416kg | 426kg |
| Overall dimensions | 1500 × 2000 × 520mm | 2400 × 2000 × 520mm | 2400 × 2000 × 520mm |
Which OneWave Model Should You Choose?
Choose the OW150 when:
- The household has up to four users
- Hot water usage is moderate
- A smaller installation footprint is preferred
- A 150L pressurized system is sufficient
Choose the OW300 when:
- The household has up to seven users
- Hot water usage is higher
- Multiple bathrooms may be used
- A larger 300L storage capacity is required
Choose the OW300 Xtreme when:
- The household has up to nine users
- Daily hot water usage is heavy
- Greater collector capacity is preferred
- Faster solar heat recovery is required
OneWave OW150 Product Specifications
General Specifications
| Specification | OneWave OW150 |
|---|---|
| Model | OW150 |
| Tank capacity | 150 litres |
| Overall dimensions | 1500 × 2000 × 520mm |
| Empty weight | 68kg |
| Full operating weight | 223kg |
| Recommended users | Up to 4 users |
| Pressurized | Yes |
| System construction | Sealing system |
Solar Tube Collector Specifications
| Specification | Details |
|---|---|
| Vacuum tube quantity | 12 tubes |
| Manufacturer-stated efficiency | 90%–94% |
| Tube material | Two-layer borosilicate glass, 1.6mm |
| Collector system | Closed-loop system |
| Tube length | 1900mm |
| Outer tube diameter | 58mm |
| Inner tube diameter | 47mm |
| Tube coating | SS-CU-ALN/AIN absorptive coating |
| Heat pipe | Ø8mm TU1 copper |
| Accessories | Backup heater, non-return valves, thermostat and magnesium rods |
Storage Tank Specifications
| Specification | Details |
|---|---|
| Inner tank diameter | Ø360mm |
| Inner tank material | SUS304L stainless steel |
| Heat exchange socket | SUS304L stamping moulding |
| Outer tank diameter | Ø460mm |
| Outer tank material | 304 stainless steel |
| Insulation material | 50mm high-density pressure-injected polyurethane foam |
| Tank protector | Magnesium rod |
| Temperature and pressure relief valve | 6 bar / 99°C |
| Water inlet and outlet | 3/4-inch stainless steel socket |
| Backup heater system | 3kW DN25 Incoloy 800 heating element |
| Solar controller | Water temperature reading and automatic backup heater |
| Heating configuration | Indirect system |
| Pressurized tank rating | 850kPa |
Frequently Asked Questions
Is the OneWave OW150 Suitable for Four People?
Yes. The OneWave OW150 is recommended for households with up to four users.
Actual capacity depends on shower duration, hot water temperature, simultaneous usage and total daily consumption.
Is a 150L Solar Water Heater Enough for a Family?
A 150L solar water heater can be suitable for a small to medium-sized family with up to four users.
Households with longer showers, multiple bathrooms or heavier hot water usage may require a larger model.
What Is the Difference Between OW150 and OW300?
The OW150 has:
- 150L tank capacity
- 12 evacuated heat-pipe tubes
- Capacity for up to 4 users
- Smaller overall dimensions
- Lower full operating weight
The OW300 has:
- 300L tank capacity
- 22 evacuated heat-pipe tubes
- Capacity for up to 7 users
- Larger hot water storage capacity
- Greater solar collector area
What Happens During Rainy or Cloudy Weather?
The OneWave OW150 includes a 3kW backup heating element.
When solar energy is insufficient, the controller can activate the backup heater to support the required water temperature.
Is the OneWave OW150 a Pressurized Solar Water Heater?
Yes.
The OneWave OW150 is a pressurized solar water heater with a manufacturer-stated tank pressure rating of 850kPa.
The property’s water pressure and plumbing system should still be assessed before installation.
Will Water Leak If One Evacuated Tube Breaks?
Household water does not flow directly through the evacuated heat-pipe tubes.
Therefore, damage to an individual collector tube is less likely to cause water loss from the storage tank.
The damaged tube should still be inspected and replaced by a qualified technician.
Does the OneWave OW150 Include a Backup Heater?
Yes.
The system includes a 3kW DN25 Incoloy 800 backup heating element to provide additional heating support when solar energy is insufficient.
Can the OneWave OW150 Be Installed on Any Roof?
Not every roof is automatically suitable.
Installation depends on:
- Roof structure
- Roof condition
- Available space
- Sunlight exposure
- Roof orientation
- Shading
- Plumbing distance
- Safe maintenance access
The OW150 has a full operating weight of approximately 223kg, so the roof and mounting location should be assessed before installation.
Solar Water Heater Installation in Selangor and Kuala Lumpur
Able Fix provides OneWave solar water heater consultation and installation support across selected locations in:
- Selangor
- Kuala Lumpur
- Klang Valley
Our support may include:
- Household hot water usage assessment
- Solar water heater model recommendation
- Roof and installation assessment
- Plumbing connection
- Water pressure checking
- Solar controller configuration
- Backup heater connection
- Testing and commissioning
- Maintenance and replacement support
Proper system sizing and installation are important for achieving reliable hot water performance.
Start Saving Energy with Solar Hot Water
Choose the OneWave OW150 Solar Water Heater for a practical 150L pressurized hot water system designed for households with up to four users.
Contact Able Fix for product consultation, installation assessment and model recommendations.
H3: WhatsApp Able Fix
+60 12-213 1549
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+60 16-242 1549
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Service Area: Selangor, Kuala Lumpur and selected Klang Valley locations.
Product suitability depends on actual household usage, roof condition, water pressure, plumbing configuration and installation environment. Specifications are subject to the manufacturer’s latest confirmation.
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