Who are we?

Masterwatt is a family business founded by brothers-in-law Bart and Elmer in 2016. With a strong focus on almost everything in the field of electric heating, such as calorifiers, radiators, infrared heating and many more products in this direction, Masterwatt is a valued and trusted supplier for hundreds of companies in the Netherlands.

 Since 2024, Masterwatt is the authorized distributor of OSO hotwater in for the BeNeLux market. OSO hotwater is a beautiful Norwegian family business which has been making stainless steel water heaters for almost 100 years. They are an established name and a trusted partner worldwide. In the past year, many projects with OSO products have been advised and sold by the team of experts at Masterwatt.

 From 2025, Masterwatt Marine Solutions will start as the authorized distributor with advising and selling the Maritime segment of OSO hotwater. This product group of OSO also has a long history and is therefore a trusted product that is often used in various branches of shipbuilding. The stainless-steel water heaters that are installed on the various ships are of great variety: inland vessels, naval vessels, super yachts, cruise ships, oil tankers and even on oil platforms.

This is not surprising, given the product range varies from 80 to 15,000 liters tanks made from 316L or even Duplex2205, with different kinds of electrical heating elements from 5kW until 100kW. As you can see the stainless-steel water heaters from OSO are very versatile, are available in all shapes and sizes and can be adjusted to your wishes.

Masterwatt Marine Solutions looks forward to welcoming you as a new partner.