1. Product Overview
The Pentair Everpure H-300 Quick-Change Filter Cartridge (Model EV9270-72) is designed to provide high-quality filtered drinking water for your home. Utilizing advanced Micro-Pure filter technology, this NSF-certified cartridge effectively reduces various contaminants while retaining beneficial minerals.

Image 1: The Pentair Everpure H-300 Quick-Change Filter Cartridge, a commercial-grade metal canister designed for under-sink water filtration systems.
Key Features:
- Advanced Filtration: Reduces particles as small as 0.5 micron, chlorine taste and odor, lead, and volatile organic compounds (VOCs), including THMs.
- NSF Certified: Certified to NSF/ANSI Standard 53 for cyst reduction (Cryptosporidium and Giardia) and NSF/ANSI Standard 401 for microplastics reduction.
- Long-Lasting Capacity: Filters up to 300 gallons of water, equivalent to 2,250 plastic water bottles.
- Quick-Change Design: Features a built-in shut-off valve for easy, tool-free cartridge replacement.
- Durable Construction: Commercial-grade metal canister protects the filter from splitting or bursting.

Image 2: An illustration detailing the features and specifications of the Pentair Everpure H-300 Drinking Water System, highlighting its filtration capabilities and design benefits.
2. Setup and Installation
The Everpure H-300 system is designed for straightforward installation under your kitchen sink. Basic hand tools are typically sufficient for installation.
Required Tools:
- Phillips screwdriver or power driver
- Wrench
- Utility knife
- Tape measure
- Pencil
- Teflon tape
Installation Steps (Overview):
- Choose Mounting Position: Select a location under the sink with at least 22 inches of vertical clearance. The filter must be installed vertically with the cartridge hanging down.
- Prepare Filter Head: Attach the input and output elbow fittings to the filter head using Teflon tape on the threads. The output fitting has a black band.
- Mount Filter Head: Securely mount the filter head to the chosen position.
- Connect Water Supply: Close the main shut-off valve for your sink. Add the H-300's valve adapter to the faucet supply line.
- Connect Tubing: Use flexible tubing to connect the valve adapter to the filter head's input. Measure and cut the tubing at a 90-degree angle to prevent leaks. Insert the tube ends into the quick-connect fittings and gently pull to ensure a snug connection.
- Connect to Faucet: Connect the filtered water line from the filter head's output to your dedicated drinking water faucet. Ensure faucet connector fittings are properly secured.
- Install Cartridge: Lift the handle on the shut-off valve on the filter head. Push the filter cartridge upwards into the filter head, then turn it one-quarter turn to the right until it locks into place.
- Restore Water Supply & Flush: Open the supply line valve and the angle stop valve. Check for leaks at all fittings. Open the valve on the filter head. Open the dedicated drinking water faucet and allow water to flow for at least 3 minutes to flush air and debris from the lines.
Video 1: A detailed installation guide for the Everpure H-300 water filtration system, demonstrating each step from mounting to connecting water lines and flushing the cartridge.
3. Operating Instructions
Once installed and flushed, your Pentair Everpure H-300 system is ready for use. Simply open your dedicated drinking water faucet to dispense filtered water.
Tips for Optimal Use:
- For best taste, allow the water to run for a few seconds if the faucet has not been used recently.
- The H-300 can also supply filtered water to other home appliances like ice makers or coffee machines by adding tee connectors to the water line (additional accessories may be required).
Video 2: An overview of the Everpure H-300 Drinking Water System, showcasing its benefits for clean, fresh-tasting water in various household applications.
4. Maintenance
Regular maintenance, primarily filter cartridge replacement, is crucial for ensuring continuous high-quality water filtration.
Filter Cartridge Replacement:
- The H-300 filter cartridge has a capacity of 300 gallons. Replacement is recommended every 10-12 months, or sooner if you notice a significant drop in water flow or a return of unpleasant tastes/odors.
- The quick-change design allows for easy replacement without needing to turn off the main water supply.
Replacement Steps:
- Lift the handle on the shut-off valve on the filter head to stop water flow to the cartridge.
- Turn the old cartridge one-quarter turn to the left and pull it downwards to remove.
- Insert the new cartridge by pushing it upwards into the filter head, then turn it one-quarter turn to the right until it locks into place.
- Lower the handle on the shut-off valve to restore water flow.
- Open the dedicated drinking water faucet and flush the new cartridge for at least 3 minutes to remove any air or carbon fines.

Image 3: A close-up view of the Pentair Everpure H-300 filter cartridge, highlighting its design for easy replacement.
5. Troubleshooting
If you encounter issues with your Pentair Everpure H-300 system, refer to the following common troubleshooting tips:
| Problem | Possible Cause | Solution |
|---|---|---|
| Low water flow from faucet | Clogged filter cartridge; kinked water line; partially closed shut-off valve. | Replace filter cartridge; check and straighten water lines; ensure all shut-off valves are fully open. |
| Water has unusual taste or odor | Expired filter cartridge; improper flushing after installation/replacement. | Replace filter cartridge; flush the system for at least 3 minutes. |
| Leaks at fittings | Loose connections; improper tubing cut; damaged O-rings. | Tighten connections; ensure tubing is cut straight at 90 degrees; check O-rings for damage and replace if necessary. |
| No water flow | Main water supply off; filter cartridge not properly installed; shut-off valve closed. | Check main water supply; ensure cartridge is fully seated and turned to the right; open all shut-off valves. |
6. Specifications
| Specification | Detail |
|---|---|
| Model Number | EV9270-72 |
| Material | Aluminum |
| Product Dimensions | 3.25"D x 17"W x 3.25"H |
| Item Weight | 2.5 Pounds |
| External Testing Certification | NSF (Standards 53, 401) |
| Product Benefits | Reduces Chlorine, Lead, VOCs, Cysts, Microplastics, Dirt, Cloudiness |
| Flow Rate | 0.5 gpm (1.9 Lpm) |
| Temperature Range | 35-100°F (2-38°C) for cold water use only |
| Pressure Range | 10-125 psi (0.7-8.6 bar) non-shock |
| Capacity | 300 gallons (1,135 L) |
| Required Space | 5W x 22H x 5D in (13W x 56H x 13D cm) |
| Manufacturer | Pentair |
| Country of Origin | USA |
7. Warranty
The Pentair Everpure H-300 Quick-Change Filter Cartridge is warranted to be free of defects for a full twelve (12) months after purchase. A detailed warranty statement is provided with each system.
8. Support
For further assistance, technical support, or to inquire about replacement parts, please contact Pentair Everpure customer service. Refer to the contact information provided in your product packaging or visit the official Pentair Everpure website.





