• F701R Compatible Filter for Insinkerator Hot Water Tap Twin Pack - WrekinWater
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F701R Compatible Filter for Insinkerator Hot Water Tap

F701R Compatible Filter for Insinkerator Hot Water Tap

AP3765SE

Out of stock

£68.00 Inc. VAT £56.67 Ex. VAT
£68.00 Inc. VAT £56.67 Ex. VAT
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Product Description

  • F701R Compatible Filter for InSinkErator® Hot Water Taps | Cuno AP3

    The F701R (Cuno AP3-C765-S-E) is a high-performance replacement filter specifically engineered for InSinkErator® Boiling Water Systems. While many retailers sell basic equivalents, this is a genuine 3M/Cuno cartridge—the original manufacturer for InSinkErator—supplied with a 3M label to offer you professional-grade filtration at a significantly lower cost.

    Designed for high-demand environments, the AP3-C765-S-E provides a massive 7,600-litre capacity. It doesn't just improve the taste of your tea and coffee; it actively protects your expensive heating tank from limescale damage and removes 99.95% of harmful cysts.

    Key Performance Features

    • Triple-Action Filtration: Effectively removes Chlorine (taste and odour) and sediment while inhibiting scale buildup in the boiling tank.

    • Cyst Protection: Certified to remove 99.95% of protozoan cysts, including Cryptosporidium and Giardia.

    • High Capacity: Rated for 7,600 litres or 6 months of use, outperforming many standard domestic filters.

    • Appliance Longevity: The integrated scale inhibitor is essential for preventing the heating element from "furring up," reducing energy costs and extending the life of your tap.

    Compatibility Check: GN1100 & HC1100 Series

    This filter is a direct fit for the following InSinkErator® models:

    • GN1100C / GN1100BS

    • HC1100C / HC1100BS

    ⚠️ IMPORTANT: The "A1 vs A3" Nozzle Check

    Some newer InSinkErator systems use a bespoke "A1" nozzle and head assembly which prevents standard 3M filters from fitting.

    • Check your current filter nozzle: If it is stamped with A1, this filter will NOT fit your current head.

    • Standard Fit: If your nozzle is stamped A3, this filter is a 100% direct replacement.

    The Solution: If you have an A1 head, we offer a Discounted Upgrade Head Kit. Once installed, this head allows you to use the more cost-effective and higher-capacity A3 filters indefinitely.



    We sell the upgrade head to convert to A3 Filters at a discount when purchased with a twin pack. Select the package deal to take advantage of this offer.

Technical Specifications

Feature Details
Manufacturer 3M / Cuno (Genuine AP3 Series)
Model Number AP3-C765-S-E
Capacity 7,600 Litres (approx. 6 Months)
Micron Rating High-efficiency sediment & cyst removal
Inlet/Outlet Designed for 3/8" high-flow heads
Function Chlorine, Sediment, Scale Inhibition

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F701R Compatible Filter for Insinkerator Hot Water Tap Twin Pack - WrekinWater

F701R Compatible Filter for Insinkerator Hot Water Tap

£68.00 Inc. VAT £56.67 Ex. VAT
£68.00 Inc. VAT £56.67 Ex. VAT

Frequently asked questions

For full details on returns, refunds, eligibility, and timeframes, please refer to our complete Refund Policy here:

👉 Refund and Returns Policy

If you are unsure whether your item qualifies for return, please contact our team before sending anything back and we’ll be happy to help.

No. 3M/Cuno actually manufactures the filters for InSinkErator. When you buy the "official" ISE branded filter, you are paying for the logo. By purchasing the 3M Cuno AP3 version, you are getting the exact same internal technology and filtration media, often with a higher gallon capacity, for a fraction of the price.

We recommend changing the cartridge every 6 months. If you notice a decrease in water flow or a change in the taste of your hot water before the 6-month mark, the filter may be saturated with sediment and should be replaced.