Klima Slim Fit Multi-Room Water Kit is the thinnest solution for water underfloor heating on the market, only 12mm, and is perfect for house renovations or new build where there are height or weight restrictions. The Klima Slim Fit Multi-Room Water Kit comes as a complete kit, including everything you require to install your underfloor heating system.

The Klima Slim Fit Multi-Room Water Kit is installed directly onto a solid subfloor, such as ply or concrete, and you can tile or lay various floor finishes directly over the top.

The Klima Slim Fit Multi-Room Water Kit requires to be covered in a self-leveller prior to the flooring being fitted.

Klima Slim Fit systems use a 10mm pipe at 100mm spacing and allow for a fast and efficient response time due to its minimum depth, and direct contact to the self-leveler surrounding the pipe, and are ideal for both traditional heating and renewable heating solutions.

Kit Contents

European-made, Stainless Steel Manifold, Various Port (2 – 5) with integrated energy efficient Alpha2L Grundfos Pump
Pushfit connectors for 10mm Pipe
European Made PE-RT Heating Pipe, 10mm / 80 metres

Pipe Cutters
Pipe Calibrator


  • All-in-one multi-room kit solution
  • High-Quality Stainless Steel Manifold
  • Grundfos Alpha2 L A Rated Pump Provided
  • European manufactured products
  • Minimum build height; only 12mm
  • Primary or secondary heating solution
  • Installation directly beneath various floor finishes

Please Note

Floor Heating-Direct Klima Slim Fit Multi-Room Water Kit come complete with a water temperature regulator, as part of the blending shunt; this ensures the correct water temperature is used within the system and allows for fitting under various floor finishes. The kits use European manufactured PE-RT pipes, to ensure quality in all areas of the system



Conveniently pre-assembled stainless steel distribution manifold with flow meters, ball valves and blending valve with pump included;

  • made of stainless steel (CRES 4301)
  • blending valve with Grundfos UPS2 pump
  • integrated manual adjustment valves on the return rail (which are set up to take actuators)
  • adjustable flowmeters (0-2.5 l/min)
  • primary connection 3/4″
  • group connections 3/4″ euro cone (Euroconus Connectors not included)
  • double metal brackets for mounting

Heating Pipes

  • KOMO approved
  • Made of Dowlex 2344 or PE-80
  • “Polyethylene of Raised Temperature Resistance”
  • EVOH oxygen barrier (DIN 4726)
  • Cross-linked polyethylene, combination of low density polyethylene / high-density polyethylene
  • Multilayer pipe
  • Optimally stabilized against aging
  • Thickness pipe:  0,933 g/cm³
  • Heat conduction coefficient: 0.4 Watt/m*К
  • Coefficient of linear expansion: 0.19mm/m*К

Installation of the Klima Slimfit panels

Do you require Insulation for water underfloor heating?

Yes, we recommend using an insulation or reflection solution under the Klima Slim Fit Water Kit. You could use the thermal board insulation, 6mm or 10mm, or using a reflection solution, like the aluminium reflection foil, to reduce heat loss.

How much floor height do I require to install the slimfit kit?
The Klima Slimfit system is one of the thinnest wet underfloor heating solutions on the market and measures in at only 12mm thick. The system does require to be covered in self-leveller once installed to create a solid and level floor surface for your floor finish. The total height required, including the slimfit system and the self-leveller is 15mm.

How would we pick a pipe spacing?

The Slimfit system is a 12mm pre grooved crate with a preset pipe spacing of 100mm.


Klima Underfloor Heating Systems


Whether heating up a tiled or wooden floor, demisting a mirror or defrosting pipes, Klima can offer you the perfect wet or electric heating solutions. As specialists in electrical heating, Klima has many years of experience in the development, maintenance and after sales/support of all kinds of electrical and water heating systems as part of many large retailers for many years.

Klima Underfloor Heating is part of the Magnum Group which is a major European manufacturer of Water & Electric Underfloor Heating systems, with its factory based in Holland and it’s UK Head Office based in Scotland.  We only manufacture the highest quality products and all our systems come with the highest European Certifications meaning we can offer long realistic warranties on all our product range and a full comprehensive manufacturers support service.  Klima has supplied some of the leading wholesales throughout the UK, last year we sold over 20,000 Klima mats. Here are some of the reasons why Klima is the best choice for your underfloor heating requirements.


Buying Klima Underfloor Heating Sytems

  •  Quick easy ordering process by website or telephone
  • Directly supplied by the manufacturer ensuring the lowest prices and great service support
  • Highest European approvals and certifications on all products ensuring quality & reliability.
  • Over 25 years of Manufacturing & Supplying Underfloor Heating Systems
  • UK based technical support service, along with a full CAD design service ensures your total support along the whole design/purchase/installation process.
  • Fast free delivery anywhere in the UK mainland
  • 50 year Water Pipe warranty & Lifetime Warranty on Klima Electric Heating Mats
  • Grundfos A rated Pumps
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