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txv on dry charge condensers
when putting in dry chge 13 seer condensers on 10 seer evaporator coils would it be better with a txv. if so can you get one that will fit on all different brand coils rather than try and find one for each unit ?.i do try to get people to go to 410a units but sometimes they don't want to tear out all of the equipment and spend more money. i have put in several without any problems,even some still have orifices and work good.a couple of the first ones i did ,they have txv on them because they were same brand as new condensing unit and were easy to get.i know alot of techs. don't like this option and say it doesn't work well and some say its ok. i personally haven't had issues, and years ago we were putting 10 seer into 8 seer coils and didn't think twice about it. i know this isn't best option for a number of reasons but the reality is that someone will get the work if you don't give option. i tell customers about efficiency issues and give them options and do suggest matching up is best.there seems to be a real mixed opinion subject for sure and continues to be this way still.i am not talking about real old stuff, i am only talking about 10 to 12 years or less on the evap. coil and no leaks etc.several wholesalers that sell them say there is no problems with or without txv installed and they have to process any warranty with condenser unit. i also have not seen any thing as of yet in writing that says about voiding warranty from manufacture as of yet about match ups. wow very confusing and just wanted to see what ideas and or experiences other guys had on this forum...