Choosing an automatic pool chlorinator can simplify pool maintenance by continuously dosing chlorine or bromine, helping to keep water clean and balanced. This article highlights five top-rated inline feeders from trusted brands, detailing how they work, key features, and practical guidance to help you pick the right model for your pool size and setup.
Overview of selected products:
| Product | Brand | Pool Type | Capacity | Notes |
|---|---|---|---|---|
| Hayward CL220EF Off-line Automatic Chemical Feeder | Hayward | In-ground/Above-ground | Supports large or small tablets | Dial feed rate; Easy-Lok cover |
| Hayward CL200EF In-line Automatic Chemical Feeder | Hayward | In-line, versatile | Large or small tablets | Dial adjustment; Safe access |
| 320 Chlorinator R171096 Compatible with Rainbow 320 | CAtArt | Inline for various pools | Supports multiple tablets | Upgraded gasket and valve; broad range |
| Hayward CL2002S In-line Automatic Chemical Feeder | Hayward | Inline for pools and spas | Supports various tablets/sticks | Security features; versatile |
| HYDROTOOLS By SWIMLINE 8750 In-Line Automatic Chlorine Feeder | Swimline | Inline for above-ground & in-ground | 9.0 lbs capacity | Universal compatibility; automatic operation |
Hayward CL220EF Off-line Automatic Chemical Feeder
The Hayward CL220EF is designed to handle both large and small slow-dissolving tablets, making it suitable for a range of pool sizes. Its updated model improves the overall reliability of tablet dissolution, while the dial control valve allows precise adjustment of the feed rate. A Safe Access Easy-Lok threaded cover provides convenient access for adding tablets without compromising safety or seal integrity. This feeder is a solid inline option for maintaining consistent sanitizer levels with minimal manual intervention.
Key considerations: Suitable for homes with variable pool sizes; easy maintenance access; reliable tablet dissolution with adjustable feed rate. Users should confirm plumbing compatibility with their current filtration setup and ensure a proper seal to prevent leaks.
Hayward CL200EF In-line Automatic Chemical Feeder
The CL200EF is an in-line feeder that supports both large and small slow-dissolving tablets. Its dial control valve makes feed-rate adjustments straightforward, and the Easy-Lok threaded cover ensures safe, convenient access to add tablets. This model is designed to integrate directly into the return line, offering consistent chemical delivery with minimal space requirements and a straightforward installation path for most above-ground and in-ground pool systems.
Key considerations: In-line integration typically means compatible with existing return lines; verify thread sizes and connection fittings; consider pool volume to set appropriate dosing expectations.
320 Chlorinator R171096 Compatible with Rainbow 320
The 320 feeder is designed for efficient filtration and clean water in pools or spas. It can hold a substantial quantity of chlorine or bromine tablets, with capacity for both large and small tablets. Upgraded gasket sealing and a reinforced control valve improve leak resistance and durability. This feeder accommodates a broad range of pool sizes, making it a flexible option for both new installations and retrofits, with a focus on maintaining consistent sanitization across different plumbing configurations.
Key considerations: Check compatibility with Rainbow 320 inline systems; assess pool size to estimate tablet supply needs; ensure proper gasket fit to avoid leaks over time.
Pentair R171096 Rainbow 320 Automatic In-Line Feeder
The Pentair Rainbow 320 automatic in-line feeder is designed for permanent installation in the return line of new or existing pools or spas. It ships standard with 2″ slip PVC fittings and adapters for 1-1/2″ plumbing, offering a robust, long-term solution for steady chemical dosing. Its straightforward inline design makes it suitable for a variety of pool configurations and is commonly used in both residential and light commercial environments where a reliable, fixed-position feeder is desirable.
Key considerations: Permanent installation requires suitable return-line access; verify plumbing dimensions and compatibility with existing fittings; plan for secure mounting in the system to ensure stable operation and accurate dosing.
HYDROTOOLS By SWIMLINE 8750 In-Line Feeder
The Hydrotools 8750 feeder is built to dissolve and distribute chlorine or bromine automatically, delivering crystal-clear water with minimal manual input. It features Hydrotools SNAP-LOCK technology for a tight seal and safe tablet insertion via a finger-release lid, plus a 360-degree dial to customize output. Its universal design makes it an adaptable replacement or addition to many pool systems, suitable for both above-ground and inground configurations. The unit emphasizes ease of installation and reliable automatic dosing across different pool sizes.
Key considerations: Check for universal compatibility with existing equipment; ensure proper lid seal to prevent leaks; use the 360-degree dial to tailor dosing to pool volume and usage patterns.
Auto/Matic Pool Chlorinator Maygo CL200 Replacement
The MAYGO CL200 replacement model mirrors the Hayward CL200 concept, offering inline automatic chlorine distribution for both above-ground and indoor pools. The 9-pound capacity enables substantial treatment for mid-sized pools, with a 360-degree control knob at the base to adjust water inlet and outlet speeds. This model is designed to be a practical, cost-effective option for users who need a straightforward inline feeder that can be configured quickly and reliably, while noting that external threading might differ from similar models and could require adapters.
Key considerations: Confirm thread compatibility with your plumbing; estimate daily dosing needs based on pool volume (typical ranges often align with mid-sized residential pools); ensure secure installation to prevent leaks and maintain consistent chemical levels.
Buying Guide: Key Purchase Considerations for Automatic Pool Chlorinators
- Pool type and plumbing compatibility: Inline feeders fit into return lines, while offline/off-line feeders may sit separately. Confirm thread sizes (1-1/2″ vs 2″) and connection fittings before purchasing.
- Tablet type and capacity: Most feeders support large or small slow-dissolving chlorine or bromine tablets. Consider your pool size, desired dosing frequency, and whether you need higher-capacity units for larger nets or frequent use.
- Control and adjustability: Look for models with dial feed-rate controls for precise dosing. Features like Easy-Lok covers or secure finger-release lids add safety and convenience during maintenance.
- Durability and materials: ABS and other durable plastics resist corrosion and chemical exposure. Upgraded gaskets and robust control valves enhance leak resistance and longevity in outdoor environments.
- Installation and maintenance: Assess how easy it is to install in your current system, replace tablet inventory, and service the unit. Some feeders are designed for quick retrofits; others require permanent mounting.
- Safety and security: In-line feeders with secure locking covers and tamper-resistant components help prevent accidental openings and ensure consistent dosing without leaks.
- Cost of ownership: Consider initial cost, tablet consumption, and potential replacement parts like gaskets or seals. A reliable feeder may lower ongoing maintenance time and chemical waste.
- Pool size and usage patterns: Larger pools or high-usage environments require feeders with larger tablets capacity and more robust dosing capabilities. For spas or hot tubs, verify compatibility with bromine or chlorine options.
- Brand reliability and support: Choose well-known brands with solid warranty coverage and readily available replacement parts to minimize downtime.