Energy ROI
ADVERTORIAL
Hot water is low hanging fruit
Real world testing in Tasmania has shown over 12-months, 75 per cent savings are possible with the correct design and control system. Non optimised systems typically have a 55 to 65 per cent energy savings. The engineers at Energy ROI always custom design systems for each facility and oversee commissioning to ensure clients get what they pay for. The different between a 60 per cent and 75 per cent energy saving will cost you thousands of dollars over the life of the system so engage us to design your next hot water system.
For many Tasmanian hotels, motels, hospitals, and residential aged care facilities domestic hot water production can account for 20 to 25 per cent of all electricity and gas used at a site. Both gas and electricity prices are increasing, environmental concerns mean Australia needs to stop using gas completely so now is the time to plan for end-of-life replacement or proactive replacement if you can save money today.
How much does a system cost and how much will I save?
The cost of a system will depend on many factors like how much hot water your site needs, the complexity of the size and if you want/need a backup system. Similarly, the savings depend on how much you are paying for gas/electricity, but we have found there are some rules of thumb. If planning to replace a gas or electric hot water system at end of life where the option is to replace the existing system with new like for like, the additional expenditure provides a payback of about 3.5-4 years.
Historically heat pump technology has been successfully used in pool water heating or split system heat pumps on the wall for room heating. These only need to generate relatively low temperatures of about 35°C and are commonplace in cold climates. Japanese engineers developed a special ‘eco-cute’ heat pump for alpine condition. It can heat water from 5°C to 65°C or higher even if it is snowing outside all while using much less energy than any other system. Commercial ‘eco-cute’ systems are available, and a number are operating in Tasmania. The downside is they are expensive and commercial warranties are only 12-months.
Our solution and 75% less energy
If your focus is on reducing your CO2 footprint and want to reduce operating expenses/energy, then proactive conversion to heat-pump hot water will have a payback of around 5.5 years. Comparing this hot water heating upgrade to other energy efficiency options like Led lighting, solar panels, solar hot water, double glazing hot water has the best ROI and you see a noticeable difference on your bills straight away. Commercial solar in Tassie sees paybacks of 5-9 years in most cases. Solar hot water paybacks are around 33 years, Led lighting 4-5 years.
Over the 3-years of R&D we have conducted accelerated life testing, measured efficiency under different conditions, made mistakes and learnt from them. Wanting to make the technology within reach of our Tasmanian clients Energy ROI have spent years developing and testing control systems to utilise low- cost domestic ‘eco-cute’ heat pumps with 5-year warranty that are eligible for government rebates.
41 Tasmanian Hospitality Review August/July Edition
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