1. Product Overview
The WECO TINY-150 is a compact 4-stage reverse osmosis water filter system designed to provide high-quality drinking water. This system effectively removes up to 99% of common water contaminants, ensuring pure and great-tasting water for your home.
- 4-Stage RO Filtration: Utilizes sediment, carbon block, granular activated carbon (GAC), and a TFC membrane to remove a wide range of contaminants including heavy metals, chlorine, chloramine, THMs, fluoride, nitrate, radon, and benzene.
- High-Performance TFC Membrane: Features an encapsulated reverse osmosis membrane for reliable filtration and safety.
- Designer Faucet: Includes a brushed nickel, lead-free designer faucet for convenient dispensing.
- Efficient Filtration: Designed for low waste water ratio (4:1) and high efficiency (93% purified water per hour).
- Compact Design: Ideal for under-sink installation, saving valuable space.

Image: A glass of water, half clear and half cloudy, illustrating the purification process.

Image: The WECO TINY-150 system installed under a kitchen sink, highlighting its compact size and powerful filtration capabilities.
2. What's in the Box
Your WECO TINY-150 system includes all necessary components for installation and operation:
- WECO TINY-150 Main Unit (pre-assembled with filters and membrane)
- Pressurized Water Storage Tank (3.2 Gallons)
- Brushed Nickel Designer Faucet
- EZ RO Universal Water Supply Adapter
- Colored Tubing for easy connection identification
- Drain Saddle
- Tank Ball Valve
- Plumber's Tape
- Pre-Filter Housing Wrench

Image: A visual representation of all components included in the self-install kit, such as the drain saddle, water supply adapter, colored tubing, storage tank, and faucet.

Image: Close-up of the 3.2-gallon RO storage tank, highlighting its capacity and quick connect/disconnect fittings.
3. Setup and Installation
Installation of the WECO TINY-150 system typically involves connecting to your cold water supply, installing a dedicated faucet, and connecting to a drain. While the system is designed for ease of installation, we recommend professional installation by a licensed plumber to ensure adherence to local codes and optimal performance.
3.1 Pre-Installation Checklist
- Ensure you have all components listed in Section 2.
- Verify adequate space under your sink for the main unit and storage tank (Product Dimensions: 15"L x 5.5"W x 9"H for the main unit).
- Turn off the main water supply before beginning installation.
- Gather necessary tools (e.g., drill, adjustable wrench, screwdriver).
3.2 Installation Steps (General Guidance)
- Faucet Installation: Drill a hole in your countertop (if necessary) and install the brushed nickel designer faucet. Ensure a secure, leak-free connection.
- Water Supply Connection: Use the EZ RO Universal Water Supply Adapter to connect the system to your cold water line.
- Drain Connection: Install the drain saddle onto your sink's drain pipe and connect the system's drain line.
- Storage Tank Connection: Connect the pressurized water storage tank to the main unit using the provided colored tubing and tank ball valve.
- Tubing Connections: Follow the colored tubing guide (typically red for inlet, blue for purified water, black for drain) to connect all components securely. The system features quick connect/disconnect fittings for ease of use.
- Leak Check: Slowly turn on the main water supply and check all connections for leaks.

Image: Detail of the quick connect/disconnect fittings, illustrating their design for easy and secure tubing connections.

Image: A diagram detailing the dimensions and features of the WECO Euro Style Compact Brushed Nickel Faucet, useful for installation planning.
4. Operating Instructions
4.1 Initial System Flush
Before consuming water from your new system, it is crucial to perform an initial flush to remove any carbon fines or air from the system:
- Ensure all connections are secure and the water supply is on.
- Open the RO faucet and let the water run for at least 20-30 minutes, or until the water runs clear and free of air bubbles.
- Close the faucet and allow the storage tank to fill completely (this may take several hours).
- Once the tank is full, open the faucet again and drain the tank completely. Repeat this process 2-3 times.
4.2 Daily Use
Once flushed, your system is ready for daily use. Simply open the RO faucet to dispense purified water. The system will automatically refill the storage tank as water is used.
4.3 Monitoring Water Quality with TDS Meter
The system may include a TDS (Total Dissolved Solids) meter to monitor the effectiveness of your filtration. Regularly test your tap water and filtered water to observe the reduction in TDS levels, indicating proper system function.

Image: A detailed view of a TDS water quality meter, showing its display, buttons, and probe for measuring dissolved solids in water.

Image: A chart illustrating Total Dissolved Solids (TDS) content in water, comparing purified water to various levels of tap water quality.
5. Maintenance
Regular maintenance ensures the longevity and optimal performance of your WECO TINY-150 system. This primarily involves timely replacement of filters and the RO membrane.
5.1 Filter Replacement Schedule
The system uses a 30-micron sediment filter, a 5-micron carbon block filter, and a granular activated carbon (GAC) post-filter. These filters protect the RO membrane and remove various contaminants.
- Sediment Filter (Stage 1): Replace every 6-12 months, depending on water quality and usage.
- Carbon Block Filter (Stage 2): Replace every 6-12 months.
- GAC Post-Filter (Stage 4): Replace every 12 months.
- RO Membrane (Stage 3): Replace every 2-3 years, or when TDS rejection rates significantly decrease.
Replacement filter kits are available (e.g., TINY-SET3 for Pre & Post Filters, TINY-SET4-150 for the full kit including membrane).
5.2 Replacement Procedure (General)
- Turn off the water supply to the RO system and open the faucet to relieve pressure.
- Use the housing wrench to unscrew the filter housings.
- Remove old filters and dispose of them properly.
- Clean the filter housings with mild soap and water.
- Insert new filters, ensuring proper orientation.
- Screw the housings back on, hand-tightening first, then using the wrench for a snug fit.
- Turn on the water supply slowly and check for leaks. Flush the system as per initial setup instructions.

Image: A high-capacity Reverse Osmosis membrane, a key component for advanced water purification.
6. Troubleshooting
This section addresses common issues you might encounter with your WECO TINY-150 system.
| Problem | Possible Cause | Solution |
|---|---|---|
| No water from faucet | Water supply off, tank valve closed, clogged filters/membrane, low water pressure. | Check water supply, open tank valve, replace filters/membrane, check incoming water pressure. |
| Slow water production | Clogged filters/membrane, low water pressure, air in system, tank pre-charge low. | Replace filters/membrane, check water pressure, bleed air from system, check tank pre-charge. |
| Unusual taste or odor | Expired carbon filters, new system (carbon fines), system not sanitized. | Replace carbon filters, perform initial flush, sanitize the system. |
| Water leaks | Loose connections, damaged O-rings, cracked housing. | Tighten connections, replace O-rings, replace damaged components. |
If you encounter issues not covered here or require further assistance, please contact WECO customer support.
7. Specifications
Key technical specifications for the WECO TINY-150 Reverse Osmosis Water Filter System:
| Feature | Specification |
|---|---|
| Brand | WECO |
| Model Name | Tiny Compact (TINY-150) |
| Product Dimensions (Main Unit) | 15"L x 5.5"W x 9"H |
| Capacity (Storage Tank) | 3.2 Gallons |
| Purification Method | Granular Activated Carbon, Reverse Osmosis |
| Installation Type | Wall-Mounted or Floor-Standing (Under-Sink) |
| Maximum Flow Rate | 0.75 Gallons Per Minute (GPM) @ Full Tank |
| Feed Water Pressure | 50-75 PSI |
| Feed Water Temperature | 40-100 °F |
| Maximum Hardness | 10 Grains @ 6.9 pH |
| Maximum TDS | 2000 PPM |
| pH Range | 4-11 |
| Fittings | 1/4" Push to Connect |
| Water Supply Connection | 3/8" or 1/2" NPT |
| Replacement Pre & Post Filters | TINY-SET3 |
| Replacement Filter Kit | TINY-SET4-150 |
| Material | Polypropylene |
| Item Weight | 25 pounds |
| UPC | 810388030779 |

Image: A table summarizing technical specifications for WECO water filtration systems, including flow rates, pressure, and temperature ranges.
8. Warranty and Support
WECO is committed to providing high-quality products and excellent customer service. For any questions, technical assistance, or warranty claims, please refer to the contact information below.
8.1 Customer Support
WECO offers comprehensive support:
- Phone & Live Chat Support: Available for immediate assistance.
- Certified Water Specialist Support: Our team includes Water Quality Association (WQA) Certified Water Specialists and VIQUA Certified Installers to help solve your water quality challenges.
- Water Report Consultation: Free consultation services to address various water concerns.

Image: A customer support representative wearing a headset, actively assisting a customer at a computer, symbolizing available support.

Image: A certified water specialist in work attire, holding a clipboard, representing expert support for water quality solutions.
9. Product Video
Watch this official video for an overview of WECO's commitment to water quality and filtration solutions.
Video: An official WECO video titled "Clean, crisp water. Every sip. Every day." showcasing the importance of water and WECO's filtration solutions.





