Cost of Converting Your Prosper Pool From Chlorine to Saltwater

Your neighbor's saltwater pool feels noticeably different from yours. The water is smoother, there's no harsh chlorine smell after a pool party, and they claim they haven't bought a jug of liquid chlorine in two years. You're spending $30-40 per month on chlorine alone, plus the time to add it. Converting sounds appealing — but what does it actually cost for a pool in Prosper?

The conversion from a traditional chlorine pool to a saltwater pool involves more than just buying a salt cell and dumping salt in the water. It's an equipment installation with electrical work, plumbing modifications, and an initial chemistry overhaul. For newer Prosper pools in Windsong Ranch, Star Trail, Whitley Place, and Gentle Creek — many of which were plumbed with salt-ready equipment pads — the conversion is relatively straightforward. For pools without pre-wiring, it costs more.

For a broader comparison of the two systems, see our guide on saltwater pool pros and cons.

The Equipment You Need

Salt Chlorine Generator (Salt Cell + Control Board)

This is the core of the system. The salt cell produces chlorine via electrolysis. The control board manages the cell's output, monitors salt levels, and displays error codes.

Cost by brand and pool size:

System	Pool Size Rating	Cost (Cell + Board)
Pentair IntelliChlor IC20	Up to 20,000 gal	$800-1,100
Pentair IntelliChlor IC40	Up to 40,000 gal	$1,000-1,400
Hayward AquaRite (T-Cell-15)	Up to 40,000 gal	$900-1,300
Jandy AquaPure Ei	Up to 25,000 gal	$700-1,000
CircuPool RJ-45+	Up to 45,000 gal	$600-900

Recommendation for Prosper: Size up. If your pool is 18,000 gallons, buy the cell rated for 40,000. The oversized cell runs at a lower output percentage (40-50% instead of 80-100%), which dramatically extends the cell's lifespan. The $200-300 upfront premium for the larger cell pays for itself through longer cell life — potentially 1-2 extra years before replacement.

Plumbing Modifications

The salt cell installs inline on the return plumbing — after the filter and heater, before the water returns to the pool. This requires cutting into the PVC return line, installing union fittings on either side of the cell (for easy removal during maintenance), and ensuring the cell is mounted in the correct orientation (flow direction matters).

If your Prosper pool's equipment pad has adequate space and the return plumbing is accessible, the plumbing work is a 1-2 hour job for a licensed installer.

Cost: $100-300 for PVC fittings, unions, and labor.

Electrical Work

The salt cell control board needs a 240V power supply — the same voltage as your pool pump. If your equipment pad sub-panel has an available 240V breaker slot, wiring the control board is straightforward.

If the sub-panel is full or doesn't have a 240V slot available, a licensed electrician needs to add a breaker or upgrade the sub-panel. This adds cost.

Cost: $100-400 depending on sub-panel capacity and wiring distance.

Salt

You'll need to add 400-600 pounds of pool-grade salt to reach the target salinity of 3,000-3,500 ppm in a typical 15,000-gallon Prosper pool. Pool-grade salt (sodium chloride, 99%+ purity, no iodine or anti-caking agents) is available at pool supply stores and home improvement centers.

Cost: $50-100 for the initial salt charge. Salt is sold in 40-pound bags at about $5-8 per bag.

Salt dissolves by broadcasting it across the pool surface with the pump running. It takes 24-48 hours to fully dissolve and reach uniform distribution. Test salt levels after 48 hours and add more if needed to reach the system's recommended range.

Total Conversion Cost

Component	Cost Range
Salt chlorine generator (cell + board)	$600-1,400
Plumbing modifications	$100-300
Electrical work	$100-400
Salt (initial charge)	$50-100
Professional installation labor	$200-500
Total	$1,050-2,700

For a typical Prosper pool with a salt-ready equipment pad (pre-wired, accessible plumbing, sub-panel space available): $1,200-1,800 is the realistic range.

For a pool requiring electrical upgrades, sub-panel expansion, or complex plumbing modifications: $2,000-2,700.

DIY installation can save $200-500 in labor if you're comfortable with PVC plumbing and basic electrical connections. The plumbing is straightforward (cut, prime, glue, install unions). The electrical work should still be done by or inspected by a licensed electrician — it's 240V near water.

What Changes After Conversion

Chemistry Adjustments

The pool chemistry fundamentals don't change — you still need to maintain FC, pH, TA, CYA, and CH in the same ranges. What changes:

pH management increases. The electrolysis process produces sodium hydroxide as a byproduct, which pushes pH upward continuously. Plan to add muriatic acid weekly to keep pH at 7.2-7.4. This is the most common complaint from saltwater pool owners: "I thought I wouldn't have to add chemicals anymore." You won't add chlorine, but you'll add acid.

CYA management simplifies. The salt cell produces unstabilized chlorine, so CYA doesn't accumulate. Add granular stabilizer once to reach 40 ppm and top it off annually as it's diluted by water replacement.

Calcium hardness monitoring becomes critical. The salt cell plates attract calcium during electrolysis. In Prosper's moderately hard water, calcium scale on the cell is the number one maintenance issue. Keep CH below 400 ppm and clean the cell with acid every 3 months.

Equipment Compatibility

Verify your heater is salt-compatible. Most pool heaters work fine with salt water, but some older copper heat exchangers corrode faster in saline conditions. Newer heaters with cupro-nickel exchangers are salt-rated. Check your heater's manual or contact the manufacturer.

Check metal accessories. Stainless steel ladder anchors, handrails, and diving board hardware can corrode in salt water over time. Salt-rated (316 stainless steel) components resist corrosion; standard (304 stainless) components may develop surface rust. If you have metal accessories, inspect them annually for corrosion after conversion.

Automation integration. If you have a pool automation system (Pentair IntelliCenter, Hayward OmniLogic, Jandy iAquaLink), the salt system integrates with it — allowing you to monitor and adjust salt cell output from your phone. The integration requires compatible brands (Pentair cell with Pentair automation, etc.) and may require a firmware update on the automation system.

Ongoing Costs

Annual Cost	Saltwater	Traditional Chlorine
Chlorine	$0	$150-250
Salt replenishment	$30-50	$0
Acid (pH management)	$40-60	$15-25
Cell replacement (amortized over 4-5 yrs)	$100-160	$0
Cell cleaning supplies	$10-15	$0
Annual Total	$180-285	$165-275

The ongoing costs are effectively equivalent. The conversion doesn't save money — it shifts costs from chlorine purchases to cell amortization and acid. The real value is convenience and water feel, not economics.

Who Should Convert — And Who Shouldn't

Convert if: You value the automation (set-and-forget chlorine production), you prefer the water feel, your pool is equipped or pre-wired for easy installation, you're committed to quarterly cell cleaning and pH monitoring, and you've budgeted for cell replacement every 4-5 years.

Don't convert if: You're doing it solely to save money (the savings aren't there), your calcium hardness is chronically above 500 ppm (the cell will scale constantly), you're not willing to monitor pH weekly and add acid, or your equipment pad would require expensive electrical and plumbing modifications.

Consider professional weekly service instead if: Your primary motivation is "less work." A weekly pool service provides the same hands-off experience as a salt system — with lower upfront cost, no cell replacement expense, and no pH management on your part.

---

Considering the switch to saltwater? Hydra Pool Services installs salt systems, converts existing pools, and provides ongoing salt pool maintenance across Prosper, Frisco, Plano, McKinney, Allen, Murphy, Parker, and The Colony. Get a conversion quote →