MY 12K BTU Pioneer system has been running fine for five years. I don't know if my old unit is the same as to current models but mine appears identical (externally) to a larger Mitsubishi unit at out church.
My Pioneer system did not have pre-charged lines so I hired that HVAC pro to flare the lines and pull a vacuum. My only failure to date was a refrigerant leak in a (totally unnecessary) Schrader valve that my "professional HVAC technician" insisted on installing in the liquid line. My mini split did ice over a few times during freezing rain (as did both conventional house units). I used a heat gun or portable forced air propane heater (sometimes called a torpedo or salamander) to thaw things out. The main point is to insure you have access behind the outdoor unit to clean and thaw if needed (mine is too close to the building for good rear access). In these systems, both expansion valves (for heating and cooling) are in the outside unit so a single service valve is all you need (liquid and vapor lines are the same pressure). That also means both refrigerant lines need to be insulated and preferably short. Cover the outside refrigerant lines to prevent sun damage to the insulation. There are commercial plastic cover sets for this purpose but many things work. Use flex conduit or UF cable for the exposed outdoor power connection. Your code probably requires a disconnect very close to the outdoor unit. -----Original Message----- From: Mercedes On Behalf Of Dimitri Seretakis via Mercedes Sent: Thursday, January 27, 2022 7:47 PM So I’m paying 8-10K for labor and warranty. Wow! I’m looking into mrcool units. A complete 18K unit set up for DIY with a warranty runs $2K. I wonder how good these are. _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
