3 ms·

There are pressurized lines running coolant gas between outdoor unit and indoor heads, they cant be sold/installed like washing machine. https://www.ac-heating

• KMag 3y ago
  Why don't they run an ethylene/propylene glycol solution loop (with refrigerant to-water heat exchanger integral to the compressor unit) like industrial chillers? There's a tiny loss in efficiency due to the extra heat exchanger and higher pumping losses, but you get less leakage, less refrigerant, your lines are unpressurized, etc. A lot more of the installation process could probably also be done with low-skill labor. I imagine it would also be easier to retrofit such a system into houses with existing in-floor radiant heating and/or baseboard radiators.