Is a saltwater pool chlorine-free?
No. A salt chlorine generator uses dissolved salt and an electrically powered cell to produce chlorine as water circulates through the system. The chlorine performs the sanitizing work. “Saltwater” describes the method of chlorine production, not a pool without chlorine or chemicals.
Dissolved salt
Salinity must match the selected generator’s requirements.
The generating cell
Compatible controls, electrical power and water flow allow chlorine production.
Test and adjust
Measure the chlorine remaining in the pool and maintain water balance.
This article covers swimming pools. Hot tubs need their own spa-specific water-care routine.
What changes—and what does not?
The main convenience is producing chlorine through installed equipment while the system operates. That can reduce routine handling of separately added chlorine, but it does not guarantee the system can meet every condition without attention or supplemental treatment.
| What may appeal to you | What to plan for |
|---|---|
| Chlorine production through the circulation system. | Correct cell sizing, operating time, flow and output settings. |
| Less routine handling of some chlorine products. | Continued water testing, balance adjustments and situation-specific treatment. |
| Control that may integrate with compatible automation. | The complete hardware and installation cost, cell care and eventual replacement. |
A proposal should make those costs and responsibilities clear. A salt system is not a maintenance-free pool.
Can your existing pool be converted to saltwater?
Many existing pools can be evaluated for conversion, but suitability starts with the pool’s materials and equipment. Review the pool structure and finish, heater, metal components, plumbing, electrical requirements and manufacturer warranties before selecting a generator. For natural-stone coping or decking, consult a qualified stone specialist about suitability and care. For a new or resurfaced pool, confirm the finish manufacturer’s startup requirements and timing before salt is introduced.
Above-ground pools need particular care. McEwen does not recommend salt chlorine generators for its conventional above-ground pools because of corrosion concerns. That matters when considering the Highland pools we offer; a general saltwater recommendation must not override the chosen model’s instructions or warranty requirements.
Select the cell and controls for the actual pool volume and operating conditions. A maximum pool-size rating is one specification, not proof that a model is the right choice for every pool of that size. Available plumbing space, circulation and any existing control system also belong in the review.
Salt pools still need chlorine and balance testing.
Keep checking free chlorine and pH, and review alkalinity, calcium hardness and stabilizer as appropriate for your pool. Follow the generator’s salinity range and your pool materials’ care instructions; one generic salt target does not apply to every unit.
The salt reading, output percentage and measured chlorine residual describe different things. Increasing the output setting is not a water-test result. Use current readings and equipment instructions to review settings rather than assuming a displayed percentage proves adequate sanitizer.
Evaporation leaves salt behind. Splash-out, backwashing and water replacement can change salinity, so test before deciding whether more salt is needed.
Our pool water chemistry guide explains the readings. We also test pool water at our Gloucester store; bring a fresh sample, the generator model and information about recent additions. Store testing supports ongoing checks at home.
What does a salt cell need through the season?
Inspect the cell and follow its manual for scale checks, cleaning and maintenance. Chemical cleaning is not a universal calendar task: use the manufacturer’s procedure only when indicated. A reading or warning can involve water conditions, flow, temperature or equipment, so record the message before assuming the cell needs replacement.
Chlorine production can be reduced or stopped by cold-water limits that vary by system. Seasonal care therefore needs a plan for the installed generator as well as the pool. Do not assume the cell continues producing normally through winter.
For a pool closing or service request, include the generator and any current message in the equipment details. The agreed scope identifies what is included; a discussion about a salt system does not add equipment work or salt to an existing service package.
How does salt chlorination fit with Hayward automation?
A compatible automation setup may let you manage chlorinator output alongside pumps, heating and lights. But a salt-ready controller, a supplied salt cell and chemistry-sensing equipment are different items. Confirm what the package actually includes.
Output control is not the same as measuring the pool’s water chemistry. Monitoring and dosing require the appropriate compatible accessories and configuration, with independent testing and maintenance still necessary. Explore Hayward pool automation options with the equipment you already own in mind.
What should a saltwater conversion quote include?
Ask for the selected generator and cell, their suitability for the pool, required control or interface hardware, plumbing and electrical work, startup requirements and the applicable written warranty. Clarify initial salt, related balance work, owner care and anything priced separately.
To start a conversation with The Pool Store in Gloucester, bring your location, approximate pool volume, pool type and finish, and equipment models or label photos if available. Tell us whether you want a new system, help with an existing generator or an automation upgrade. We help customers across Hampton Roads and the Middle Peninsula discuss the appropriate next step.
Manufacturer and water-care references.
Reviewed September 26, 2026. Use the manual and warranty for your selected pool and generator; these references explain the general principles.