Madimack Inverflow PLUS F400i (1.5HP) - Astralpool Retrofit - 5 Year warranty

The Madimack InverFLOW PLUS F400i (1.5HP) is a next-generation variable-speed inverter pool pump and a direct retrofit replacement for a wide range of Astralpool and Hurlcon pumps — no pipework changes required.

Powered by InverMAC Enhanced Inverter Technology, the F400i delivers industry-leading energy savings, whisper-quiet operation from just 33dB, and Wi-Fi connectivity for effortless remote control. With 1.5HP, it's suited to larger pools and more demanding hydraulic setups. Backed by a market-leading 5-year warranty.

Direct Retrofit Replacements

• Astralpool E140, E170, E230 (reduce speed for these models)
• Astralpool CTX280
• Astralpool P320
• Astralpool Viron
• Hurlcon CX & TX series

Not sure if your pump is compatible? Call us on 02 9137 8914 and we'll confirm before you order.

Key Features

• Full Inverter Technology — automatically adjusts motor capacity between 30–100% for optimal efficiency
• Ultra-Quiet Operation — as low as 33dB with Sound Suppression Technology
• Wi-Fi Connectivity — control and schedule from your smartphone
• Skimmer Mode — maintains a pristine pool surface automatically
• Dual Voltage Compatible — suits Australian single and three-phase installations
• Advanced Centrifugal Impeller — enhanced hydraulic performance and efficiency
• DC Brushless Motor — long-lasting durability with minimal maintenance
• 1.5HP — suited to larger pools and longer pipe runs
• 5-Year Manufacturer's Warranty

Frequently Asked Questions

Which pumps does the Madimack F400i replace?

The F400i is a direct retrofit for the Astralpool E140, E170, E230, CTX280, P320, Viron, and Hurlcon CX and TX series pumps. For E140, E170, and E230 replacements, the pump speed should be reduced to match the original flow rate.

What is the difference between the F300i and F400i?

The F400i is a 1.5HP model, making it better suited to larger pools, pools with longer pipe runs, or installations with higher head pressure. The F300i is a 1.0HP model suited to standard residential pools. Both share the same InverMAC technology, Wi-Fi connectivity, and 5-year warranty.

Do I need to modify my pipework to install the F400i?

No — the F400i is designed as a drop-in retrofit. It matches the connection sizes of the compatible Astralpool and Hurlcon models, so no pipework modifications are required.

How quiet is the InverFLOW PLUS F400i?

The F400i operates as quietly as 33dB at low speeds — comparable to a whisper. Sound Suppression Technology ensures minimal noise even at higher speeds.

Can I control the F400i from my phone?

Yes — the F400i includes built-in Wi-Fi connectivity, allowing you to control speed, set schedules, and monitor operation from your smartphone.

How much energy does the F400i save compared to a standard pump?

Variable-speed inverter pumps like the F400i can reduce energy consumption by up to 80–90% compared to single-speed pumps when run at lower speeds for filtration. Actual savings depend on run time and speed settings.

What warranty does the Madimack F400i come with?

The InverFLOW PLUS F400i comes with a 5-year manufacturer's warranty — one of the longest in the industry for pool pumps.