Høiax Stainless Steel Water Heaters

Høiax was established in 1927 and is Norway’s oldest and a leading manufacturer of high quality water heaters. As the demand for water heaters increased, new manufacturing techniques needed to be developed. Thus, in the early seventies Høiax was one of the first in the world to start production of stainless steel water heaters. Stainless steel water heaters are now commonly installed throughout Scandinavia.

Quality engineering

Høiax moved into its fully automated plant in 2000. The manufacturing processes were improved by designing and building innovative machinery. The best engineering available is used to guarantee that a quality product is manufactured each and every time.

Høiax AS is certified in accordance with ISO 9001 Quality Management System

Høiax has implemented and maintains a Quality Management System which meets the requirements of the standard NS-EN ISO 9001:2015.

OEM products

Høiax develops and manufactures multiple purpose inner tanks by specification according to customer demands. Our tank-in-tank system has a unique resistance to external pressure on the inner cylinder (approx 5 Bar), which represents a great competitive advantage.
Høiax module system for large water heaters gives simplified logistics and warehousing of large water heater system. Please contact us or send us your request and we will be pleased to have the opportunity to propose tailored solutions for special requirements.

Høiax and the Environment

Man's increasing use of energy and raw materials presents a serious impact on the environment. Høiax works continuously to optimize the manufacturing process to minimise waste, as well as to develop products that reduce energy consumption to benefit the consumer.

Høiax AS is certified in accordance with NS-EN ISO 9001:2015 External

Høiax has implemented and maintains an Environmental Management System which meets the requirements of the standard NS-EN ISO 14001:2015. 

Stainless steel of the highest quality

Høiax manufactures Titanium Extreme stainless steel water heaters from 1.4521 Niobium-Titanium stabilized steel, which offers extreme protection against corrosion.

Recycling stainless steel

Stainless steel is constructed using up to 80% recycled materials and therefore all scrap is recycled to be used again. 

Patented and environmentally friendly pickling

All good quality stainless steel water heaters need pickling to prolong their life. Pickling is essential for products installed in areas where the water has a high chloride or lime value. 
Høiax is aware of the environmental impact of pickling stainless steel, as traditional pickling method uses chemicals considered unkind to the environment. Therefore Høiax operates a patented in-house pickling process to reuse up to 95% of the water consumed. All discharged water is also cleaned of chemicals before being released back in to the environment, and the extracted chemicals are treated and recycled. Our pickling process is therefore unique and environmentally friendly.

World leading welding technology

Høiax Titanium Extreme stainless steel water heaters are butt-welded using a fully automated welding technique, which is clean and smooth to prevent crevice corrosion. The welding technique reduces stress and damage to the integrity of the steel and eliminates product rejections during production. The Titanium Extreme stainless steel water heaters offer the user excellent performance and service for many years.

Pipe systems, hydronic heating and heat pumps

On the domestic market Høiax is also a leading supplier of pipe systems and hydronic heating.
Read more about Pipe-in-pipe systems here.

Our values

"Security and Growth through Profitability” is the company’s main objective
Our core values:
  • Customer focus
  • Creating values
  • Interesting workplace
  • Long term perspective
  • Initiative to adapt
  • Trust
  • Simplicity
  • Totality

Our promise is the quality and longevity of our products. That is what gives both short and long term value to our customers and the environment.

Ownership structure

Høiax is a Norwegian company owned by the Danish company MetroTherm and the Swedish Nibe Group. Nibe is listed on NASDAQ OMX Stockholm, and is secondary listed on the SIX Swiss Exchange.