Gone West Posted May 8, 2018 Share Posted May 8, 2018 These were mentioned on the other forum and look interesting. http://www.denso-am.com/products/life-energy/co2-heat-pump/ https://www.stiebel-eltron.com/en/home/products-solutions/renewables/ventilation/central/lwz_504/lwz_504.html Link to comment Share on other sites More sharing options...
dpmiller Posted May 8, 2018 Share Posted May 8, 2018 There is a move towards CO2 as a refrigerant in other applications too, cars amongst others. Link to comment Share on other sites More sharing options...
PeterW Posted May 8, 2018 Share Posted May 8, 2018 Been running a Sanyo one for 6 years. Pros - better cold weather performance Cons - limited support. Most engineers don’t have the high pressure kit to service them Link to comment Share on other sites More sharing options...
ProDave Posted May 8, 2018 Share Posted May 8, 2018 I'm confused. That Denso link talks about air to water, but then talks about air as the distribution medium, so surely it's air to air? Very confusing website. Link to comment Share on other sites More sharing options...
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