CircuPool SmartFlo AF 3.9P
#2 in Large PoolsFull review
A high-flow smart pump for big pools with water features on a Pentair-footprint pad; most pools need less.
Amazon $1,875$1,875
The CircuPool SmartFlo AF 3.9P is the better pool pump overall, rated 3.6 to 3.2. The CircuPool SmartFlo AF 3.9P leads on warranty, efficiency and value. The Pentair IntelliFlo VS+SVRS wins on controls. The CircuPool SmartFlo AF 3.9P costs $359.25 less ($1,875 vs $2,234.25).
Pentair IntelliFlo VS+SVRS
#12 in Large PoolsFull review
For pools that need a pump with built-in safety vacuum release (SVRS), such as single-drain pools where code calls for one; otherwise the IntelliFlo3 VSF is the more efficient choice.
Amazon $2,323.61 Leslie's $2,234.25$2,234.25
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 SmartFlo AF 3.9P for warranty (5-year warranty vs 2-year warranty), efficiency (WEF 7.3, 39% above the ENERGY STAR minimum for its size vs WEF 6.9, 34% above the ENERGY STAR minimum for its size) and value ($1,875 for 3.9 HP ($481 per HP) vs $2,234 for 4 HP ($566 per HP)).
- Choose the Pentair IntelliFlo VS+SVRS for controls (Built-in schedule, works with pentair intellitouch, pentair easytouch, pentair suntouch, pentair intellicomm vs Built-in wi-fi).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every large pools pool pump; a clear win is highlighted. How we rank explains each one.
| Factor weight | CircuPool SmartFlo AF 3.9P | Pentair IntelliFlo VS+SVRS |
|---|---|---|
| Overall rating | 3.6/5 | 3.2/5 |
| Efficiency 35% | 58 WEF 7.3, 39% above the ENERGY STAR minimum for its size | 49 WEF 6.9, 34% above the ENERGY STAR minimum for its size |
| Value 25% | 62 $1,875 for 3.9 HP ($481 per HP) | 53 $2,234 for 4 HP ($566 per HP) |
| Warranty 15% | 100 5-year warranty | 25 2-year warranty |
| Controls 15% | 35 Built-in wi-fi | 65 Built-in schedule, works with pentair intellitouch, pentair easytouch, pentair suntouch, pentair intellicomm |
| Noise 10% | 50 noise not published (neutral score used) | 50 noise not published (neutral score used) |
Specifications
| CircuPool SmartFlo AF 3.9P | Pentair IntelliFlo VS+SVRS | |
|---|---|---|
| Efficiency ratings | ||
| Pump type | In-ground (self-priming) | In-ground (self-priming) |
| Motor | Variable speed | Variable speed |
| Rated horsepower (DOE) | 3.9 HP | 4 HP |
| Hydraulic horsepower (DOE) | 1.8 HP | 1.9 HP |
| Weighted energy factor (WEF) | 7.3 kgal/kWh | 6.9 kgal/kWh |
| ENERGY STAR minimum for its size | 5.2 kgal/kWh | 5.1 kgal/kWh |
| ENERGY STAR certified | Yes | Yes |
| Pump | ||
| Voltage | - | 230 V |
| Speed range | - | 1,100 to 3,450 rpm |
| Maximum flow | - | 174 gpm |
| Pipe size | 2 in | 2 in |
| Size (W × D × H) | 23.8 × 10.9 × 12.8 in | 23.4 × 10.8 × 13.1 in |
| Controls | ||
| Built-in schedule | - | Yes |
| Freeze protection | No | Yes |
| Wi-Fi | Built in | No |
| Automation compatibility | - | Pentair IntelliTouch, Pentair EasyTouch, Pentair SunTouch, Pentair IntelliComm |
| Warranty and models | ||
| Warranty | 5 years | 2 years |
| Warranty terms | 5-year manufacturer warranty with US-based support, as listed for any buyer. | Pentair lists IntelliFlo SVRS pumps at 2 years, parts and labor when professionally installed from a dealer, pool builder or service company; bought online (EC-011057) it is 2 years, parts only. Not eligible for the 3-year bundle. |
| Also sold as | LINGXIAO Relaax390-VS, Key Lander SWP390-VS, LX SWP390-VS, Iliving ILG8PP390-VS, Aqua Expert VSP39-Pro | Sta-Rite IntelliPro VS+SVRS (013002) |
| Released | 2026-04 | - |