Specifically, R290's excellent thermodynamic properties permit it to maintain stable and responsible operation even under Excessive chilly or higher temperature problems in locations with severe climates. In contrast to some refrigerants that experience a significant decline in cooling/heating capability at increased/lower outside temperatures, R290 demonstrates a decrease cooling abi... https://bookmarkuse.com/story20403434/the-5-second-trick-for-r290-heat-pumps