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
3.7/5
For in-ground pools that need a bit more than a 1.5 HP pump, especially ones replacing an old WhisperFlo, where a simple keypad pump is enough.
- 2.6 HPRated power
- 8.4WEF
- 54% aboveAbove ENERGY STAR minimum
- 115/230 VVoltage
- 140 gpmMax flow
- 2 yearsWarranty
Check price at Amazon$1,559
Price checked October 27, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Runs on 115 or 230 V, so it fits most existing pump circuits
- Drop-in replacement for an older WhisperFlo, so little re-plumbing
- More head than the SuperFlo VST for heaters, cleaners and higher-head plumbing
- Simple keypad schedule with three speeds; no app needed
Cons
- No Wi-Fi or app of its own
- Automation hookup needs a separate RS-485 kit
- 2-year warranty, and only 1 year parts-only if bought online
How it scores
The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its pool type. How we rank explains each one.
Specifications
| Model number | 011533 / EC-011533 |
|---|---|
| Efficiency ratings | |
| Pump type | In-ground (self-priming) |
| Motor | Variable speed |
| Rated horsepower (DOE) | 2.6 HP |
| Hydraulic horsepower (DOE) | 1.6 HP |
| Weighted energy factor (WEF) | 8.4 kgal/kWh |
| ENERGY STAR minimum for its size | 5.5 kgal/kWh |
| ENERGY STAR certified | Yes |
| Pump | |
| Voltage | 115/230 V |
| Speed range | 450 to 3,450 rpm |
| Maximum flow | 140 gpm |
| Pipe size | 2 in |
| Weight | 45 lb |
| Controls | |
| Built-in schedule | Yes |
| Freeze protection | No |
| Wi-Fi | No |
| Automation compatibility | Pentair automation (RS-485 kit), Relay or digital-input controllers |
| Warranty and models | |
| Warranty | 2 years |
| Warranty terms | Pentair lists the SuperFlo VS/VST, SuperMax VS and WhisperFlo VST pumps at 2 years (parts and labor when professionally installed from a dealer, pool builder or service company); a qualifying pump + filter + one more Pentair product install extends that to 3 years. Bought online (including EC- part numbers) it is 1 year, parts only. |
| Released | 2022-03 |
Alternatives in this pool type
Jandy ePump 2.7 HP
#3 in Large PoolsFull review
Jandy’s large-body flagship for big custom pools, where flow and a huge basket matter more than footprint.
Jandy (find a dealer)
Pentair IntelliFlo3 VSF 3 HP
#4 in Large PoolsFull review
For large pools or pools with spas and water features, where an owner wants app control and constant-flow filtering without buying an automation system.
Amazon $1,750 Leslie's $1,719.99$1,719.99
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