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The new refrigerant of the future staring 2025 will be R-454b. R454b is an A2L, mildly flammable refrigerant. R-32, R-454b, and ...
111,602 views
4 years ago
... full blown HVAC system installed by a contractor. These DIY units save on installation and have limitless applications for solving ...
23,321 views
7 years ago
