Water System Components

Varmetec supplies high-quality water system components for heat pump installations, ensuring smooth circulation, pressure control, and efficient heat transfer.

Our range includes expansion vessels, filling loops, valves, gauges, and pipe fittings — all compatible with leading brands. Each component is manufactured to exacting standards for safety, durability, and reliability.

Whether you’re installing a new heat pump or maintaining an existing system, well-designed water system parts are vital for consistent heating performance.

Varmetec’s technical experts can help you select the correct components for your system, supported by fast UK delivery and dependable service.

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57 products

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  • Wilo Top-S 30/10 head only

    £715.57 GBP
    £715.57 GBP
    Wilo Top-S 30/10 head only
    Sold out

  • Nibe Vacuum Valve - 524263

    £85.41 GBP
    £85.41 GBP
    Nibe Vacuum Valve - 524263

  • Combination Cold Water Valve - 1 Piece

    £185.53 GBP
    £185.53 GBP
    Combination Cold Water Valve - 1 Piece

  • Multibloc, Cold Water Valve

    £89.99 GBP
    £89.99 GBP
    Multibloc, Cold Water Valve

  • Nibe 2.5Bar Heating Pressure Relief Valve - 624890

    £68.99 GBP
    £68.99 GBP
    Nibe 2.5Bar Heating Pressure Relief Valve - 624890

  • Combination Cold Water Valve - 2 Piece

    £110.33 GBP
    £110.33 GBP
    Combination Cold Water Valve - 2 Piece

  • 24L - Heating Expansion Vessel

    £57.70 GBP
    £57.70 GBP
    24L - Heating Expansion Vessel

  • 24L - Expansion Vessel

    £62.36 GBP
    £62.36 GBP
    24L - Expansion Vessel

  • 18L - Hot Water Expansion Vessel

    £65.06 GBP
    £65.06 GBP
    18L - Hot Water Expansion Vessel

What Our Customers Say

At Varmetec, we take pride in delivering reliable service, genuine components, and expert support that our customers can depend on. From installers and service engineers to homeowners and renewable energy specialists, our clients trust us to keep their systems performing at their best. Here’s what they have to say about working with Varmetec.

We’ve relied on Varmetec for all our heat pump parts over the past year, and their service has been exceptional. Orders arrive quickly, the parts are always genuine, and the team’s technical knowledge saves us valuable time on site. A dependable partner for any installer.

James H., Renewable Energy Engineer, Bristol

Finding the right replacement parts for our NIBE system used to be a challenge — until we discovered Varmetec. Their website made it easy to identify what we needed, and the parts arrived within two days. Great service, clear communication, and genuine components.

Laura P., Homeowner, Surrey

As a heat pump service engineer, speed and accuracy are everything. Varmetec consistently provides the right components when I need them most. Their support team knows the products inside out — it’s refreshing to deal with people who genuinely understand the industry.

Mark D., Heating Specialist, Manchester

Varmetec has become our go-to supplier for large-scale renewable projects. Their stock availability and delivery reliability have been excellent, even for less common parts. A professional company that’s truly committed to supporting the UK’s renewable heating market.

Sarah L., Project Manager, Sustainable Developments Ltd