CircuPool Universal40
#7 in Large PoolsFull review
For owners of an aging Hayward AquaRite or similar system who want a new control box and cell for about the price of a brand-name cell, on pools up to 40,000 gallons.
Amazon $1,295$1,295
The CircuPool Universal40 is the better salt chlorinator overall, rated 3.3 to 3.1. The CircuPool Universal40 leads on value. The CircuPool Universal40 costs $400 less ($1,295 vs $1,695).
CircuPool RJ45+
#14 in Large PoolsFull review
A straightforward DIY salt system for pools up to about 45,000 gallons that shows the salt level on its screen; the warranty is shorter than the 7-year headline suggests.
Amazon $1,745 CircuPool $1,695$1,695
Prices were last checked October 27, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the CircuPool Universal40 for value ($1,295 for 1.8 lb of chlorine a day ($719 per lb/day) vs $1,695 for 1.9 lb of chlorine a day ($892 per lb/day)).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every large pools salt chlorinator; a clear win is highlighted. How we rank explains each one.
| Factor weight | CircuPool Universal40 | CircuPool RJ45+ |
|---|---|---|
| Overall rating | 3.3/5 | 3.1/5 |
| Value 30% | 71 $1,295 for 1.8 lb of chlorine a day ($719 per lb/day) | 60 $1,695 for 1.9 lb of chlorine a day ($892 per lb/day) |
| Cell cost 20% | 90 Replacement cell $649 ($361 per lb/day) | 89 Replacement cell $699 ($368 per lb/day) |
| Warranty 20% | 0 1-year cell, 1-year control center warranty | 0 1-year cell, 1-year control center warranty |
| Features 20% | 55 Salt level readout, cold-water shutoff, flow sensing, boost mode | 55 Salt level readout, cold-water shutoff, flow sensing, boost mode |
| Certification 10% | 0 Not certified to NSF/ANSI 50 | 0 Not certified to NSF/ANSI 50 |
Specifications
| CircuPool Universal40 | CircuPool RJ45+ | |
|---|---|---|
| Output | ||
| Pool type | In-ground | In-ground |
| Rated pool size (maker) | 40,000 gal | 45,000 gal |
| Chlorine output | 1.8 lb/day | 1.9 lb/day |
| Salt level | 3,000 to 4,000 ppm (ideal 3,500) | 3,000 to 4,000 ppm (ideal 3,500) |
| NSF/ANSI 50 certified | No | No |
| Cell | ||
| Replacement cell | UL40-2200-4A-1RC | RJ45N-3300-7A-1RC |
| Replacement cell price | $649 | $699 |
| Self-cleaning | Yes | Yes |
| Plumbing size | 2 in | 2 in |
| Controls | ||
| Salt level readout | Yes | Yes |
| Flow sensing | Flow switch | Flow switch |
| Cold-water shutoff | Yes | Yes |
| Boost mode | Yes | Yes |
| Wi-Fi | No | No |
| Voltage | 115/230 V | 115/230 V |
| Warranty and models | ||
| Warranty | 1 years | 1 years |
| Warranty terms | Sold as a 4-year limited warranty, prorated: parts free in year 1, then supplied at 25% (year 2), 50% (year 3) and 70% (year 4) of base price. No labor or shipping. DIY installation keeps the warranty. Commercial use: 1 year. | Sold as a 7-year limited warranty, but it is prorated: parts free in year 1, then supplied at 20% (year 2), 40% (year 3), 60% (year 4) and 80% (years 5-7) of base price, covering the control module and cell. No labor or shipping. DIY installation keeps the warranty (CircuPool sells direct online). Commercial use: 1 year. |