Public buildingsAdO Arena
Pool heating saving up to 750,000 kWh a year, running at full capacity through Bergen's coldest winter in 20 years.
Public buildings
AdO Arena
AdO Arena is Norway's national swimming arena in Bergen, a 12,000 m² facility named after Olympic swimmer Aleksander Dale Oen and opened in 2014. Straume Rør installed a Tequs Aqua4 CO₂ heat pump for pool heating that replaced an originally specified propane system. It is expected to deliver over 1.1 GWh of heat a year and save up to 750,000 kWh of energy annually.
- Bergen, Norway
- Location
- 140 kW (Aqua4)
- Installed Capacity
- 2.7
- Field COP
- ~35 t/yr
- CO₂ Avoided
From fossil to renewable
With Tequs' Aqua series heat pumps, AdO Arena has replaced traditional fossil-fuelled pool heating with a CO₂ heat pump solution. The system delivers water up to 90°C and is used here for pool heating. CO₂ (R744) as a refrigerant has a Global Warming Potential (GWP) of just 1, making it one of the most climate-friendly alternatives on the market. Tequs is also the world's first manufacturer to achieve EcoDesign certification for a high-temperature CO₂ heat pump.
Tailored for Norway's largest aquatic centre
Tequs' modular design allows multiple units to be connected in parallel for capacities up to 2.8 MW. For AdO Arena, this means the flexibility to scale with seasonal demand, from everyday public bathing to major international competitions. The compact footprint, with widths from just 698 mm, made installation possible even in the arena's confined technical rooms.
Dedicated to pool heating
At AdO Arena the heat pump keeps the main pool at 28°C and the hot pool at 37°C. The system achieves a COP of 2 to 6, dramatically reducing energy costs compared to conventional solutions.
Our ambition was to maximize local energy production through solar power. By combining hybrid solar panels with Tequs’ heat pump technology, we now produce 1.4 GWh annually, exceeding our original target by 35%.
Technical solution
ParameterDetail
- Heat pump model
- Aqua4
- Refrigerant
- CO₂ (R744), replacing an originally specified propane system
- System temperatures
- 70 / 45 °C
- Application
- Pool heating for a public swimming arena
Results and impact
- 2.82: Lab-verified COP (Rivacold, EN 14511)
- 2.7: Field COP, within 5% of lab result
- 91.2%: Days at full capacity through Bergen's coldest winter in 20 years
- Over 1.1 GWh/yr: Expected heat delivered for pool heating, vs. 575 MWh planned
- Up to 750,000 kWh/yr: Expected energy savings
- 1.4 GWh/yr: Produced via hybrid solar and heat pump, 35% above target
References.
Public buildings
HealthcareOslo University Hospital
Three units, field COP 3.2, around 105 tonnes of CO₂ avoided per year.
IndustryStatkraft, Meråker
Three units in a greenhouse, COP 4.8, around 750 tonnes of CO₂ avoided per year.
HospitalityHolmen Fjordhotell
One unit supplying space heating and hot water for 170 rooms, saving around 191,000 kWh a year.
AquacultureNekton Aquaculture
One unit delivering 85°C heat from seawater, COP 3.25, around 35 tonnes of CO₂ avoided per year.
