Welcome to SonFlow

A new brand, built on expertise since 1984.

SonFlow has developed a highly efficient range of plate heat exchangers based on more than 45 years of experience. Our product range includes traditional, AHRI-certified®, Free Flow, sanitary, condenser/evaporator, and brazed plate heat exchangers. All our plate heat exchangers are customized to meet specific temperature requirements and capacities. No matter the industry or process you work in, we can provide a tailored solution to meet your needs.

At SonFlow, we have a vision to create energy-efficient and environmentally friendly solutions. Our dedicated engineering team continuously develops new designs and optimized process solutions, allowing us to offer products that meet the highest standards of safety and quality. As an ISO 9001-2015-certified company, we are proud to supply heat exchangers to a wide range of industries, from HVAC and sanitary to industrial applications.

Our modern facilities in Kolding are equipped with advanced technology for production and testing, ensuring that each heat exchanger meets our high-quality standards before reaching our customers. With subsidiaries in Australia, Dubai, Germany, and China, we serve customers worldwide.

At SonFlow, we are more than just a supplier – we are a partner, working closely with our customers to find the best solution.

Watch the SonFlow A/S Company video:

SonFlow A/S

Nordager 25
DK- 6000 Kolding

Tel: +45 86571344
Mail: info@sonflow.dk
VAT no: DK44270927

Technical Advice:
Plate heat exchangers: +45 31 51 57 30

SonFlow Benefits:

Founded by Aage Søndergaard, drawing on decades of expertise in plate heat exchanger development
Provides a wide range of plate types
Designed to meet real-world operational demands
Focused on optimizing efficiency and reducing energy consumption

SonFlow’s History

SonFlow was founded in 2019, after Aage Søndergaard sold his life’s work, Sondex, to Danfoss a few years earlier. Initially, the product range included both DanPumps pumps and SonFlow plate heat exchangers. However, in 2023, DanPumps A/S was separated as an independent company, now based in Haderslev and owned by Aage Søndergaard and Dennis Hansen. Read more about DanPumps here.

Since its founding, SonFlow has expanded its global presence, establishing subsidiaries in Australia, Dubai, Germany and China.