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Microfilter K3 1 Micron Carbon Block Inline Water Filter - 1/4" Push Fit

SKU: MF-K3
In stock

Price:
Sale price£14.99
Quantity: Single
Price:
Sale price£14.99
Free express delivery for all orders over £50

Free express delivery for all orders over £50

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FREE Express Delivery: Orders over £50 to UK mainland
Next Day Delivery: £5.99 (order before 3pm)
Standard Delivery: £2.99 for 2-3 working days
Guaranteed to Fit

Guaranteed to Fit

Perfect fit guaranteed on all recommended products – or you’ll get a full refund.

Unsure if it’s the right fit? Ring us on 0161 768 9566 or email us.

Description

The Microfilter K3 1 Micron Carbon Block Inline Water Filter is a high quality inline water filter that is a suitable replacement for refrigerators, under sink filter systems, water fountains, water coolers and more.

With a high quality 1 micron coconut carbon block core, the filter is NSF 42 certified for the reduction of chlorine, tastes and odours, leaving you to enjoy fresh tasting water on demand.

The K3P is also available with the additional benefit of limescale inhibitor vs. the standard Microfilter K3, perfect for hard water areas where limescale build up can be an issue.

Manufactured by one of the leading water filtration manufactures Microfilter, who are responsible for manufacturing filters for leading brands such as Samsung, BOSCH and LG. Each filter meets stringent quality tests to ensure it meets high quality water purification standards.

    • 1 Micron Carbon Block Inline Water Filter
    • Reduces chlorine, taste and odour for great tasting, fresh water
    • Quick and easy filter change with 1/4" push fit fittings
    • Dimensions: 10" x 2.5" 
    • Manufactured by Microfilter who manufactures filters for leading appliance brands such as Samsung, BOSCH, LG and more.

    Shipping

    • Orders ship within 1 business day (Mon–Fri, excl. holidays).
    • You’ll get an email as soon as your order is on its way.

    Delivery Options

    • FREE Express Delivery on UK orders over £50
    • Next Day Delivery – £5.99 (order before 3pm)
    • Standard Delivery – just £2.99

    Click here for international details.

    Every filter we stock meets rigorous industry standards. We source exclusively from manufacturers holding WRAS, NSF, or WQA certifications — so whether you're replacing a fridge filter, fitting an undersink system, or upgrading your whole house, you're getting proven performance, not guesswork.

    Different water problems need different solutions. Hard water, chlorine taste, sediment, microplastics — each requires specific filtration technology. That's why we don't just sell filters; we help you match the right system to your actual water quality concerns.

    What we guarantee:

    • Certified quality — Every product meets recognised UK or international filtration standards
    • Genuine parts — Authentic filters from authorised supply chains, never grey-market imitations
    • Expert guidance — Our team knows filtration inside out and will steer you to what actually works
    Filter Flair
    OEM Brands
    Other Online Sellers
    Perfect Filter Guarantee
    ✅ Always fits or your money back
    ✅ Fits (official product)
    ❌ Risk of wrong/ incompatible filter
    Delivery Speed
    ✅ Next-day tracked delivery available
    ❌Often slower, limited stock
    ❌Unpredictable shipping times from abroad.
    Customer Service
    ✅ UK-based, 7-Day Specialist Support
    ❌ Outsourced India-based centres
    ❌ Unskilled AI chatbot support
    Price and Value
    ✅ Lower price, same OEM reliability
    ❌ Sticker price with no savings
    ❌ Unskilled AI chatbot support
    Credibility
    ✅ 900+ Verified 5-star reviews
    ✅Big brand reputation
    ❌ Mixed reviews with doubts on authenticity

    Fit & Compatibility

    How do I know if this filter fits my fridge?
    Use our “Compatibility Check” on the website. Enter your fridge’s model number and we’ll show you the exact filter you need.

    Where can I find my fridge’s model number?

    Most fridge model numbers are on a label inside the fridge (usually behind the crisper drawer, on the side wall, or near the door frame). See our guide here. If you can’t find it, check your user manual.

    What if the filter doesn’t fit?


    You’re covered by our Perfect Fit Guarantee. If it doesn’t fit, we’ll replace it or refund you, no hassle.

    Can I use a non-OEM filter in my fridge?

    Yes, Certified Compatible Filters are engineered to meet or exceed OEM standards, while offering the same fit and filtration performance—at a better value.

    Usage & Maintenance

    How often should I replace my filter?

    Every 6 months, or sooner if your water has a noticeable taste or odour.

    How do I install the filter?

    Each filter comes with step-by-step instructions. Most simply twist or click into place—no tools required.

    What happens if I forget to replace it on time?


    Old filters can clog, slowing water flow and letting impurities through. Regular replacement ensures fresh, clean water and ice.

    How do I know when my filter needs changing?


    Look out for:

    • Water tasting or smelling off
    • Slower water flow
    • Your fridge’s “change filter” light switching on

    Performance & Safety

    Do these filters remove chlorine, lead, and microplastics?


    Yes, our filters reduce chlorine, lead, and other common contaminants, including microplastics, so your water tastes better and is safer to drink.

    Is water in the UK safe to drink without a filter?


    Tap water in the UK is safe and regulated. A filter isn’t required—but it improves taste, reduces micro-contaminants, and gives extra peace of mind.

    What’s the difference between OEM filters and Filter Flair alternatives?


    OEM = “Original Equipment Manufacturer.” Filter Flair alternative filters deliver the same quality, compatibility, and certifications, but at a fraction of the price.

    Are your filters certified (WRAS, NSF, WQA)?


    Yes, all Filter Flair filters are independently tested and certified to meet WRAS, NSF, and WQA standards.

    Delivery & Subscription

    How quickly will my filter be delivered?


    Orders are processed within 1 business day. Express UK delivery arrives in 2–3 days, and Next-Day delivery is available if you order before 3pm. For more information visit our shipping policy page

    How does Subscribe & Save work?

    
Pick your filter, and get it delivered every six months while saving up to 10%. 

    Can I pause or cancel my subscription anytime?


    Yes, you’re in control, you can pause, change, or cancel anytime from your account dashboard.

    How does international shipping work?


    We ship worldwide. Costs and delivery times vary depending on the destination—calculated at checkout. See more information on our shipping policy page 

    Trust & Assurance

    Why choose Filter Flair over others?

    • Perfect Fit Guarantee
    • Genuine OEM & Certified Filters
    • Fast UK delivery
    • Subscribe & Save discounts
    • Excellent UK-based support, 7 days a week

    What is the ‘Perfect Fit Guarantee’?


    If your filter doesn’t fit or perform as promised, we’ll replace it or refund you in full. No risk, no hassle.

    What if I need help choosing the right filter?


    Use our simple Compatibility Checker or get in touch and we’ll help you find the perfect match for your fridge.

    How can I get in touch with Filter Flair?


    Get in touch via the ‘Contact Us’ page on our website or email our UK support team at support@filterflair.co.uk. Alternatively, give us a call on +44 (0)161 768 9566 or contact our live chat here.

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    Customer Reviews

    Based on 6 reviews
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    A
    Alison palmer (Harlow, GB)

    Very efficient supplier

    Hi Alison,

    Thank you for your positive review! We are glad to hear that you are satisfied with our product and services. We strive to provide efficient and high-quality products to our customers.

    If you ever need any assistance, please don't hesitate to reach out to us.

    Thank you for choosing our product and we hope to fulfill more of your future needs.

    Warm Regards,
    Brian
    Filter Flair UK

    A
    Antonio Carlos Mendonca (Kilburn, GB)

    Microfilter K3 1 Micron Carbon Block Inline Water Filter - 1/4" Push Fit

    Hi Antonio, thanks for posting a review for us, we really appreciate it! We look forward to helping you again and provide your water filtration needs. All the best, Brian

    A
    A FASOGBON (Edgware, GB)
    REVIEW

    REVIEW

    N
    Nick Hughes (Grays, GB)
    New customer

    Excellent and wonderful service, and live chat was very informative and assist us getting the correct filter for our machine. Product came by postal service with no trouble at all.

    Hi Nick,

    Glad to know that you're satisfied with your first purchase with Filter Flair!
    I'll make sure to pass down your feedback to our customer service and fulfillment team.

    Thank you so much!
    Trish

    V
    V Malkin (Richmond, GB)

    Already completed & submitted!

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