WWHES - Plate Heat Exchanger manufacturers with full after sales service.

WWHES are official UK agents for SONFLOW A/S of Denmark. We offer full Thermal / Mechanical design for all Plate Heat Exchangers in addition to providing a full, UK based, after sales service.

Our Mission

We strive to provide you with cost effective new build Plate Heat Exchanger solutions backed up by an excellent after-sales service, offering as much value for your money.

Our History

Following the closure of Sondex Hayes in August 2018 and the end of plate heat exchangers production in the UK, several ex-workshop technicians decided to open up their own company. The new company was originally set up for the service and refurbishment of plate heat exchangers, but now is a distributor for all SONFLOW A/S heat transfer products.

Our Location

Based in Iver, Buckinghamshire, World Wide Heat Exchanger Services (WWHES) is just three miles away from Heathrow Airport and has easy access into London. Our company is conveniently placed to allow a quick response to all points across the country, be it by air or by road.

World Wide Heat Exchanger Services

Why Choose Us

WWHES are official distributors of all SONFLOW A/S products and assemble selected Plate Heat Exchangers here in the UK.


WWHES has vast knowledge and experience in working on all Sondex products. Additionally, we also have experience with Alfa Laval, APV, Tranter, UK Exchangers and Kelvion plate heat exchangers amongst others.


We can carry out plate heat exchanger cleaning, gasket replacement, and plate pack replacement either in our workshop or on-site anywhere in the UK and Ireland. Our company also accepts work overseas and offshore when required.


All of our staff at WWHES are factory trained, Construction Skills Certification Scheme (CSCS) cardholders, and SafeContractor approved. For all of our operatives who work offshore, we ensure that they are trained in Basic Offshore Safety Induction and Emergency Training (BOSIET).


We can carry out planned maintenance for any site or application and will respond very quickly to an emergency situation when required. Our team can respond to your request within 30 minutes at any time of the day or night.

“Balcas operates biomass Combined Heat and Power Plants to provide renewable energy for our production processes and electricity to the national grid. Partnerships with key suppliers, effective maintenance and engineering support is a fundamental to ensuring our plants can operate 24/7.

Alex and his team have played a huge part in providing such valuable support to our plants for many years. This has been a combination of, engineering support during outages, overhauls of plate heat exchangers on and off-site and providing expert advice in new equipment selection.

I would have no issue in recommending World Wide Heat Exchanger Services”

-Johnathan Pollock
Head of Energy