Heat Exchangers

Helping you choose the best heat exchanger to meet your operational needs

Specialised Heat Exchanger

At Unison, we work with market-leading manufacturers to supply hygienic and non-hygienic heat exchangers to processing companies of all sizes and sectors. We understand the challenges faced by processing companies when it comes to creating optimised manufacturing environments. From compliance to internal audits, we will tackle these issues head on and supply best-in-class products backed up by expertise and support.

For your facility, we supply all makes of Heat Exchangers and gaskets including API, GEA Ecoflex, Arsopi, Alfa Laval, APV, Fischer, Tranter, Schmidt, Swed and more. As well as being a leading supplier of products and spare parts, we offer a complete service including installation, commissioning, servicing, and refurbishment.

Heat Exchangers Suited
To Your Needs

At Unison, we focus on supplying new and used heat exchangers that will meet specific operational requirements. And to ensure your equipment runs as smoothly as it should, our maintenance team of experienced site engineers offer service and support as your site needs it.

We also specialise in non-destructive heat exchanger integrity and holding time testing. As the most advanced integrity testing methods on the market, our patented HEIST and Pastest+ systems set new standards in this area. And to offer you the ongoing support and maintenance you need, we also offer a wide range of top quality processing spare parts supporting Tetra Pak, APV/SPX, Alfa Laval, GEA Niro Saovi and HST equipment.



We offer a wide range of new and used heat exchangers including:

  • Hygienic Plate Heat Exchangers

  • Non-Hygienic Plate Heat Exchangers

  • Wide-Gap Plate Heat Exchangers

  • Shell and Tube Heat Exchangers

  • Scrape-Surface Heat Exchangers

  • Brazed Heat Exchangers

Heat Exchangers

For your facility, we supply all makes of Plate and Shell and Tube Heat Exchangers and gaskets including but not limited to:

As well being a leading supplier of heat exchangers and spare parts, we offer a complete service including installation, commissioning, testing, servicing, and refurbishment.

  • GEA Ecoflex

  • Arsopi

  • Alfa Laval

  • APV

  • Fischer

  • Tranter

  • Schmidt

  • Swed

  • Sondex

  • Sunflo

  • API

  • UK Heat Exchangers

  • Junkers

  • Pasilac

  • Polaris

  • Reheat

  • Stork

  • Swep

  • Chester Jensen

  • Vicarb

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Product Focus – API Heat Transfer

The right heat exchanger can propel your application to a whole new level of efficiency and reliability. So having the right heat transfer supplier can make a world of difference – not only to your product, but also your bottom line. With a heritage of more than 130 years designing and delivering worldclass heat transfer products for nearly every industry, API Heat Transfer understands that performance is everything.

Whether you need a custom-engineered design tailored to meet your specifications or a readily available standard unit, Unison and API will work with you every step of the way. We’ll analyze your application, design to your needs and create the most effective and efficient heat transfer solution to help your process perform like never before.

API Heat Transfer’s breadth of product and market expertise is second to none – giving us the unique ability to craft the right heating or cooling solution that seamlessly fits into your design, no matter your market.

API are experts across a variety of industries including:

  • Food, beverage, brewery, and dairy
  • Air dryers
  • Air separation
  • Alternative fuels
  • Chemical, petrochemical, and process
  • Compressors
  • Diesel engine cooling
  • Fluid power
  • Healthcare
  • HVAC
  • Industrial
  • Marine
  • Off-highway
  • Oil and gas
  • On-highway
  • Pharmaceutical
  • Power generation
  • Refrigeration


Every application comes with its own set of requirements and challenges. By offering all three main technologies of heat transfer, API can select the product design that best fits your requirements, without forcing a solution due to limited product scope. API’s versatility also means they are your single source for heat transfer, eliminating the need to deal with multiple suppliers.

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API Product Ranges

Airtech heat exchangers are constructed from 100% aluminum, and offer unparalleled performance and cost-effectiveness in a rugged, compact, and lightweight package. API designs include both bar and plate as well as tube and header construction. Bar and plate construction allows an infinite number of core configurations and sizes to customize a solution specifically to your exact requirements, with minimal or no tooling. Tube and header construction provides a cost-effective, lightweight solution.

All Airtech products utilize a vacuum brazing process, allowing us to use higher-strength materials. The result is a bonded unitary core – ensuring reliable operation even under the harshest conditions. Finally, API offer a wide variety of internal and external fin configurations to maximize heat transfer while minimizing pressure drop, and ensuring suitability for the cooler’s operating environment.

Why Choose Unison?

If you are looking to replace or expand your heat exchanger unit Unison’s expert team can work with you to select the right equipment to meet your specific processing requirements. We have vast experience in all makes and models of heat exchangers and can advise on the right heat exchanger for your needs and budget.

Heat Exchanger
Integrity Testing

Speak to us to find out more about our automatic and engineer-led testing solutions