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LG mini split line length too long? options?
I have 80' of line length with 6 'sharp' bends on a mini split install at my house. It's having an issue heating the room, won't heat it more than 20F vs outside ambient air temp. Haven't tried AC yet as it's not the season.
I bought and installed the outdoor unit (LG LUU127HV) and ceiling cassette unit (LG LCN127HV4) myself.
HVAC company ran the line set. HVAC company noted length on the mini split is 66' per the manual, but I put the outside unit 80' away with the 6 'sharp' bends. They are coming out Monday to look at it.
What are my options? Can they simply charge it more and it cost more to run? Or will I need to find a new mini split unit (yikes!)?
I have installation manuals if necessary for advice.