Vertex IsoTwist Complete Annual Maintenance Kit

Save 12% vs. purchasing items separately

Vertex IsoTwist Complete Annual Maintenance Kit - Pure n Natural Systems
Vertex IsoTwist Complete Annual Maintenance Kit - Pure n Natural Systems

Vertex IsoTwist Complete Annual Maintenance Kit

Save 12% vs. purchasing items separately

Translation missing: en.product.general.regular_price $256.42 Translation missing: en.product.general.sale_price $225.65
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About this product

Everything You Need for Annual IsoTwist Maintenance — In One Kit

Stop chasing parts every year. This bundle gives you every filter and the membrane your Vertex IsoTwist system needs to stay efficient and reliable.

It’s designed for busy homeowners and facility managers who want consistent water quality without missed maintenance. Replace everything at once and keep your system working at peak performance.

Why it matters:
Old filters and membranes reduce flow, affect taste, and strain your system. This bundle keeps water quality steady and helps extend system life.

What's Included

  • Vertex IsoTwist Annual RO Replacement Filter Kit
    • choice of: 4-Stage FK-112 – 3 filters or 5-Stage FK-113 – 4 filters model
  • Vertex Replacement RO Membrane (MHA-4222)

Why Bundle?

  • Complete your annual maintenance in one order
  • Ensure all filters and membrane are replaced at the same time for optimal water quality
  •  Never forget the membrane — the most commonly overlooked maintenance item

Recommended Replacement Schedule

Vertex recommends replacing all filters and the RO membrane annually for best performance. This kit makes it easy to stay on schedule and maintain the water quality your family deserves.

Choose your filter stage model below. Compatible with the Vertex IsoTwist Reverse Osmosis system.

Best for

  • Homes using Vertex IsoTwist RO systems
  • Offices and light commercial spaces
  • Property managers maintaining multiple units
  • Buyers who want simple, once-a-year maintenance
  • Anyone who wants consistent water quality year-round

Specifications

What's in the box

  • Vertex IsoTwist Annual Filter Kit: 4-Stage FK-112 (3 filters) or 5-Stage FK-113 (4 filters)
  • Vertex 50 GPD Reverse Osmosis Membrane (MHA-4222)

Installation tips

  • Turn off water supply before replacing filters
  • Replace filters first, then install membrane
  • Flush system after installation (follow system manual)
  • Check for leaks after reinstalling housing
  • Label installation date for next annual replacement

Installation is quick and tool-free with the IsoTwist design.

Frequently asked questions

Do I need to replace the membrane every year?
Yes. Annual replacement helps maintain performance and water quality. 

What’s the difference between FK-112 and FK-113?
FK-113 includes an extra filtration stage for added purification.

Is this compatible with all RO systems?
No. This bundle is designed specifically for Vertex IsoTwist systems.

Will this improve water taste?
Yes. Replacing filters and membrane helps restore clean, fresh taste.

How long does installation take?
  Most users complete installation in under 30 minutes.

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30 days Free Returns

30 days Free Returns

If it’s not what you expected, you have 30 days to return it at no additional cost.

Over 14K customers trust us

Over 14K customers trust us

More than 14,000 satisfied customers trust and recommend us.

30+ years in the market

30+ years in the market

With over 30 years of experience, we are a solid and reliable name in the market.

Unmatched Warranties.

Unmatched Warranties.

We offer unmatched warranties, designed to give you complete peace of mind with your purchase.

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