Best Automatic Chlorine Feeder Solutions for Inground Pools
Choosing the right automatic chlorine feeder helps maintain clear, safe pool water with minimal effort. This guide reviews five reliable inline and offline chlorine feeders that suit inground pool setups, detailing compatibility, installation, and key features. Use the product cards below to compare capacity, dosage control, and ease of maintenance, so you can select a feeder that fits your pool size and chlorine regimen.
| Product | Brand | Key Feature |
|---|---|---|
| Pentair R171096 Rainbow 320 | Pentair | Inline installation; no special venting; 2″ PVC fittings |
| Hayward CL200EF | Hayward | Large or small slow-dissolving tablets; easy dial control |
| XtremepowerUS Inline Chlorinator | XtremepowerUS | Inline design; adjustable dial; supports 3″ tablets |
| Hayward CL220EF Offline | Hayward | Offline design; easy feed rate adjustment |
| HUAYOUR Auto/Matic Chlorinator | HUAYOUR | Rainbow 320 compatibility; durable ABS; multi-function |
Pentair R171096 Rainbow 320 Inline Feeder
The Rainbow 320 inline chlorine/bromine feeder from Pentair is designed for permanent installation in the return line of new or existing pools and spas. It ships standard with 2″ slip PVC fittings and adapters for 1-1/2″ lines, enabling straightforward integration into many plumbing configurations. The unit is intended for inline use, providing continuous chemical feeding without venting requirements, which simplifies installation for inground pool systems.
Hayward CL200EF In-line Automatic Feeder
The Hayward CL200EF in-line feeder accepts both large and small slow-dissolving tablets, with a dial control valve for precise feed rate adjustments. Its Easy-Lok threaded cover provides safe and convenient access for adding tablets, making maintenance straightforward. This model is well-suited for medium to larger inground pools that require dependable, hands-off chemical feeding within the return line.
XtremepowerUS Inline Automatic Chlorinator
The XtremepowerUS inline chlorinator is designed for both above-ground and inground pools, integrating directly into the return line. It supports automatic dosing of 3″ slow-dissolving tablets and includes a dial control valve to adjust dissolution speed. The inline design simplifies installation after the heater and filter, helping to maintain clear water with minimal hands-on work.
Hayward CL220EF Off-line Feeder
The Hayward CL220EF offline feeder uses large or small slow-dissolving tablets with a dial control valve for easy feed rate adjustment. The Easy-Lok threaded cover allows safe access to add tablets, supporting reliable chemical dosing for various pool sizes. This offline configuration is popular for retrofit projects where inline integration is not feasible.
HUAYOUR Auto/Matic 320 Inline Chlorinator
This HUAYOUR feeder emphasizes compatibility with Rainbow 320 inline chlorinators, offering easy maintenance and part replacements (R171096 and R17-1096). Constructed from ABS with a reinforced interior, it aims for durability in inground pool environments. It uses a closed-loop design to deliver steady chlorine or bromine dosing across a wide range of pool and spa configurations, including both underground and above-ground setups.
Buying Guide: Key Factors for Choosing an Automatic Chlorine Feeder
- Compatibility and sizing: Match the feeder to your pool’s chlorine needs and return-line setup. Inline feeders work best when you have space in the return line; offline feeders are often easier to install in retrofit projects without pipe modifications.
- Tablet compatibility: Most feeders use 3″ slow-dissolving tablets or standard tablets in varying sizes. Ensure the feeder supports the tablet size you plan to use and maintains consistent dissolution rates for steady chlorine levels.
- Control and adjustability: Look for dial or valve controls that let you adjust the feed rate precisely. A clear, accessible cover helps with routine tablet replenishment and maintenance checks.
- Ventilation and safety: Inline feeders typically do not vent gases, which simplifies installation. If you’re replacing an old unit, verify there are no hazardous venting requirements in your environment.
- Maintenance and durability: Materials like ABS are common for durable feeders. Consider parts availability and ease of replacement if you anticipate long-term use or frequent servicing.
- Pool type and size: For larger inground pools, you may need higher-capacity feeders or multiple feeders to maintain chlorine levels. For spas, ensure the unit can withstand variable flow and temperature conditions.
- Installation location: Inline feeders should be placed in the return line after filtration and heating where feasible. Offline models can be mounted near the equipment pad if space is limited in the plumbing path.
When evaluating options, balance installation complexity with long-term maintenance. Inline models excel for seamless, continuous dosing, while offline feeders offer flexible retrofitting. Consider your pool size, tablet availability, and how much manual dosing you’re prepared to do. The five feeders highlighted here provide a range of compatibility, controls, and installation styles to support a steady and safe sanitizing routine for inground pools.