Case Studies
Home Heat Pump Water Heaters
Gas hot water replacement saving Christchurch home $972 per year
Ecobulb replaced the gas hot water heater for a Christchurch family of four with an Emerald heat pump water heater. They are saving an estimated $972 per year on their hot water heating costs through the ultra-high efficiency of their Emerald heat pump water heater, combined with its smart controls that allow the savings to be maximised and monitored in real time.”
Christchurch home saving $1,185 per year on their hot water costs
Ecobulb replaced the gas hot water heater for a Christchurch family of four with one of their heat pump water heaters. Despite having four heavy hot water users and programming their heat pump water heater to run just seven hours per day to maximise their savings, they never run out of hot water and are saving $1,185 per year on their hot water costs.
Christchurch electric upgrade saving $800 a year
"Just sending you an email to follow up on the Emerald HWHP installation today. Firstly, thank you, great to have the unit installed. Overall a great experience with the plumber and electrician, everything working, the unit is impressively quiet, super low electricity use and everything was going in time for the kids to have a hot bath this evening".
Christchurch gas upgrade saving $1,100 a year
This family upgraded from gas bottles to an Emerald Hot Water Heat Pump, saving around $1,100 a year on their hot water bills. Tucked neatly on a concrete paving slab, this install shows that most homes can easily find a spot outside for a heat pump system.
Wellington piped gas upgrade saving $1,200 a year
Our partners OVP Plumbing and Gas upgraded this home from piped gas to an Emerald Hot Water Heat Pump. It sits perfectly into a key area of the property and will help this family save $1,200 a year.
Christchurch gas upgrade saving $900 a year
Installed by our partners at Aquapro, this Christchurch home upgraded from gas bottles to an Emerald Hot Water Heat Pump and will save around $900 a year from their hot water bills.
Queenstown couple savings $330 a year
A Queenstown couple recently needed to replace their ageing electric storage cylinder.
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Instead of opting for a like-for-like replacement, they chose to upgrade to an Emerald Pro hot water heat pump.
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The result? Increased storage space in their home and annual savings of approximately $330 compared to a standard replacement.
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The installation process exceeded expectations, with the homeowner commenting:
“Great installation yesterday. Really happy with that. Very thorough.”
Sumner, Christchurch, gas hot water replacement saving $880 per year
Installed by our partners at Aquapro, this Christchurch home upgraded from gas bottles to an Emerald Hot Water Heat Pump and will save around $880 a year from their hot water bills.
Kaiapoi home saving $660 per year
An electric hot water cylinder replacement, resulting in annual savings of $660.
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Haswell home saving $700 per year
Installed by our partners at Aquapro, this Christchurch home upgraded from gas bottles to an Emerald Hot Water Heat Pump and will save around $700 a year from their hot water bills.
Rangiora home saving $840 per year
After upgrading their electric hot water cylinder to an Emerald hot water heat pump, this family are saving $840 per year.
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Hornby home saving $330 per year
Installed by our partners at Aquapro, this Christchurch home upgraded from an electric hot water cylinder to an Emerald Hot Water Heat Pump and will save around $330 a year on their hot water bills.
Kaiapoi home saving $1,170 per year after gas hot water replacement
Installed by our partners at Aquapro, this Christchurch home upgraded from gas bottles to an Emerald Hot Water Heat Pump and will save around $1,170 a year from their hot water bills.
Halswell home saving $1,400 annually
Installed by our partners at Aquapro, this Christchurch home upgraded from gas hot water to an Emerald Hot Water Heat Pump and will save around $1,400 a year on their hot water bills.
Kingston home now saving $870 per year on hot water bills
This home near Queenstown, upgraded from gas hot waterto an Emerald Hot Water Heat Pump and will save around $870 a year from their hot water bills.
Commercial Lighting Projects
Sky Stadium, Wellington
The Sky Stadium Wellington, affectionally known as the "Cake Tin', is a leading venue for sports and entertainment.
The Stadium has recently completed a major sustainability upgrade. As part of this initiative, we replaced over 3,000 outdated light fittings with high-efficiency LED luminaires, significantly reducing both carbon emissions and energy consumption. This targeted lighting upgrade, which covered key areas of the stadium is forecast to reduce the lighting related power usage by 79%, saving the Sky Stadium over $260,000 a year on their electricity bills.
Justice Centre, Wellington
The Justice Centre is a large 16-storey office block located in Thorndon Wellington which is tenanted by a number of government departments.
The building has a DALI lighting control system so the Ecobulb supplied LED luminaires had to be compatible. Compatibility with the buildings third party contractors prior to procurement was validated. Being busy offices, most of the installation works are being completed after hours. In total we installed 4,500 luminaires that will collectively save the tenants of these offices over $360,000 a year on their electricity bills.
New Zealand Post, Palmerston North
New Zealand Post’s Manawatu Mail Centre is a busy warehouse and office which runs seven days a week, 20 hours a day.
The facility already had a DALI lighting control system installed, so we had to supply luminaires that were DALI compatible, including commissioning. The site was occupied and operating almost 24/7, so significant planning was involved to ensure we didn’t disrupt their operations. This lighting upgrade is saving New Zealand Post over $20,000 a year and has reduced their lighting power bills by 80%.
Cookes, Auckland
Cookes is a fast-paced, dynamic operation, with its entire facility spanning 6,760m².
The facility recently completed an LED upgrade to further advance its sustainability initiatives while enhancing the work environment. This upgrade, which involved installing energy-efficient LED lighting in both the office and warehouse, is saving Cookes over $20,000 a year and has reduced their lighting power bills by 80%.
Healthcare Logistics, Richard Pearse Drive Auckland
The Healthcare Logistics facility on Richard Pearse Drive spans approximately 3,000 m² of open warehouse space.
Healthcare Logistics' warehouse and office previously relied on traditional lighting, but switched to energy-efficient LED lighting to reduce their electricity bills. Due to the high level of activity in both areas, most of the installation was carried out outside regular business hours. This upgrade is saving over $30,000 a year and has reduced their lighting power bills by 72%.
Healthcare Logistics, Verissimo Drive Auckland
Healthcare Logistics, spanning 6,760m², is a leading provider of healthcare supply chain solutions in New Zealand.
Healthcare Logistics' warehouse and office originally used conventional lighting, but the transition to high-efficiency LED lighting has led to substantial cost savings. Given the high activity in both areas, most of the installation work is completed after business hours. This upgrade is saving Healthcare Logistics over $32,000 a year and has reduced their lighting power bills by 62%.
ProPharma Auckland
ProPharma operates a large 15,000m² office and warehouse facility located in Auckland.
Recently ProPharma upgraded its office and warehouse facilities in Auckland by incorporating energy-efficient LED lighting, further advancing its sustainability efforts while enhancing the work environment. This upgrade is saving ProPharma over $35,000 a year and has reduced their lighting power bills by 73%.
Apex Valves
When Apex Valves moved into their new premises, they needed a full warehouse lighting redesign. Referred by the landlord, they chose Ecobulb for our industrial LED expertise. We replaced and repositioned 44 existing highbays and added 25 new fittings to suit engineering, assembly, packing and racking areas. Work was coordinated around other trades with minimal disruption. Results: Bright, even lighting across all zones, no dark aisles, and more than $9,000 in annual energy savings. Office upgrades are next, continuing the push for efficiency and long-term savings.
St Claudine Thevenet School
St Claudine Thevenet School, a small Catholic primary in Wainuiamata, upgraded its outdated lighting to improve classroom comfort, aesthetics, and energy efficiency. 188 LED light fittings were installed across the school, delivering brighter, more consistent lighting. The installation was completed in under a week during the school holidays, minimising disruption. The upgrade saves over $11,000 a year in electricity and maintenance, reduces the school’s carbon footprint by 3.4 tonnes of CO₂, and has a payback period of just three years – a smart investment in both learning and sustainability.
Residential LED Projects
Ashburton Ecobulb LED and Home Energy Saver Project, October 2023:
Ecobulb distributed 10,700 ecobulb LEDs to Ashburton homes in an October 2023 LED project with EA Networks and EECA, following by 277 qualifying Ashburton homes receiving follow-up in-home Ecobulb energy assessments with various free energy savings actions undertaken.
Home Energy Saver Projects
King Home Energy Saver Project, 2021 and 2022:
Ecobulb completed 2,900 home energy assessments and various energy efficiency installations and actions in low-income King Country homes in 2021 and 2022 with the King Country and Maru Energy Trusts and with MBIE. More information can be found here and in the link below.