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This project required the urgent replacement of an ageing diesel boiler at Bayswater School in Auckland that was burning non-renewable fossil fuel. Replacement parts were no longer available in the case of any breakdown. The diesel fuel tank was non-compliant with current environmental regulations, but the radiators in the classrooms which were used for the central heating system were still in good condition and had been recently refurbished.

Apricus NZ Eco Energy provided Sustainability Contestable Fund application support and arranged the supply and installation of a Pellematic 64kW pellet boiler from ÖkoFEN, Austria. The boiler will provide Bayswater school with reliable and efficient central heating through its current radiator system. The boiler and plant room design was checked by mechanical services contractor Tubman Heating who also aided in the installation of the system.

The boilers come with a ten-year warranty with all spare parts and warranty replacements being held on-shore in New Zealand.

By installing a new and efficient pellet boiler Bayswater school can reduce around 99% of its greenhouse gas emissions and benefit from an estimated 41 % reduction in costs compared to its previous use of diesel fuel.

*The fuel cost has been calculated based on current fuel consumption and a quote for fuel supply from Nature’s Flame, which was offered with a 5 year, fixed-price contract.

The old system:

  • In 2018, Bayswater School burned 2,152 litres of diesel
  • This cost the school $3,020
  • The cost of fuel was $1.40/litre or $0.14/kWh
  • This cost is expected to rise in future as the price of carbon continues to rise and fossil fuels deplete further
  • The burning of this diesel emitted 5,724 kg carbon dioxide, contributing to the climate crisis
  • This is the equivalent of travelling 26,018km in an average modern car
  • Or over 20 return journeys by car between Wellington and Auckland
  • Each student at the school was indirectly responsible for 25kg of CO2emissions per year, just by coming to school

The new system:

  • Uses 100% renewable being made from waste sawdust
  • The forecast annual cost of fuel is $1,790
  • The cost of pellet fuel will be $416.13/tonne or $0.08/kWh
  • This quantity of pellets will emit 65kg of carbon dioxide
  • This equates to indirect emissions per student of less than 0.3kg
  • With annual emissions of 65kg CO2we could barely drive from Bayswater to Pokeno

The anticipated heating requirement will mean only one delivery of pellets per year is required. The pellets will be delivered by a vacuum truck which can visit outside of school hours and only needs to get within 20m of the boiler room using a blower hose. The pellets are completely harmless, non-toxic and cannot ignite except in the boiler with forced air combustion.

The maintenance requirements on the Pellematic boilers are extremely low with the ash container only needing to be emptied after 3-4 tonnes of operation (after approximately 20 weeks based on our school’s heating load). The ash is a certified organic fertiliser and can be placed directly on our marakai.

Apricus Eco Hot Water & Heating
Bay of Plenty
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Bayswater School Diesel Boiler Replacement
Bayswater School Diesel Boiler Replacement

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Bayswater School Diesel Boiler Replacement

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Bayswater School Diesel Boiler Replacement

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Apricus specialises in sustainable hot water and central heating systems for residential and commercial buildings. We work with architects, specifiers, facility managers and homeowners to bring solutions that reduce their environmental impact and meet their hot water and central heating needs.

Apricus brings the latest renewable hot water technologies into the New Zealand market, leading with innovative solar hot water collectors, CO2 hot water heat pumps and pellet biomass boilers. We aim to offer the most reliable eco alternatives to burning fossil fuels like gas, oil and coal.

Our products include:

  • Apricus All In One - heat pump for domestic hot water heating. 
  • Reclaim Energy Heat Pump - for domestic hot water heating.
  • EasyPell Heat Pump - for domestic heating, cooling & hot water heating.
  • Easypell Pellet Boiler - domesitc heating & hot water.
  • ÖkoFEN Pellet Boiler - commercial heating & hot water.
  • Apricus - evacuated tube solar hot water systems for homes and commercial buildings.

Our pellet biomass boilers are produced by one of Europe's leading manufacturers, ÖkoFEN, a specialist in pellet boilers and a supplier of space-saving, cost-effective, simple solutions for storing pellets. Offering storage tanks suitable for all space and pellet requirements. The pellet boilers can provide enough hot water for even the most extensive home heating needs, using radiators, underfloor pipework, or a combination. The wood pellets burned are made in New Zealand from waste sawdust and wood shavings, providing 100% renewable heating, whatever the temperature outside.

Our range of hot water heat pumps use some of the most environmentally friendly refrigerants while offering outstanding performance. The very low global warming potential makes these systems the perfect electric alternative to gas hot water systems. Households can now reduce their energy costs and improve the sustainability of their home with ease.

The Apricus solar systems have robust frames, easy-to-use controllers and high-efficiency pumps. The high-performance, reliable designs can withstand New Zealand’s extreme environmental conditions. This is combined with a careful focus on quality and continual improvement by the team at Apricus International.

All complete system packages are individually designed for maximum savings, and on-shore technical support and global experience ensure quality and precision for every installation.