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Australia // Technology

CO 2 Heat Pumps Catching On in Australia Rising gas costs are driving hotels and wineries to re-evaluate their space heating and hot water systems, opening up opportunities for natural refrigerant air-to-water heat pumps

― By Devin Yoshimoto


ARBS 2018, Australia's most important HVAC&R and building services exhibition, CO 2 heat pumps were all the rage.

Suppliers like Mayekawa, Mitsubishi Heavy Industries Air-Conditioners Australia, and Automatic Heating Global all had CO 2 heat pumps on display — and all remarked that interest in the technology was increasing from businesses looking to move away from gas-fired boiler systems. (The situation is similar in the U.S.; see “NatRef Heat Pumps: A Key Piece in a Decarbonized Future,” Accelerate America, April-May 2019.) One year and several installations later, suppliers have gained confidence that the technology has real commercial potential in a number of different sectors and applications. Two case studies — at a winery and a small hotel — presented during the ATMOsphere Australia 2019 conference in May helped paint a picture of the businesses and applications where CO 2 air-to-water heat pumps have the most potential in the Australian market.

Free space heating and hot water Halfway between Sydney and Brisbane is a city named Armidale, New South Wales.

Saving 75% on energy costs, along with the elimination of the need for LP gas, is, as they say, a 'no-brainer,' – Terry Plaisted, Automatic Heating Global

Accelerate Magazine // June 2019

Here temperatures often drop below -5°C (23°F) on winter nights due to the city's high elevation (1,110 m/3,641 ft) above sea level. So for hotel owners in the area, a frequent question is, "Are the rooms heated?" In the FAQ section on City Centre Motor Inn's website, the answer is an emphatic "Absolutely!" "We know how to keep the rooms warm," the website states.

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