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Old 10-06-19, 03:31 AM   #1
mejunkhound
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Default R290 into 410A system

Lightning zapped 410A inverter split system at son's house, easiest fix was to buy a whole new unit as can later repair zapped unit and use for shop that now is just wood heat.
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Have used bbq propane for R22, how will that work for replacing 410A? Pressures will be a lot lower, maybe need to replace or 'finagle' txv?

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Old 10-07-19, 12:53 PM   #2
jeff5may
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Not the same at all. High molecular weight, high pressure. R410a is kind of a "high pressure extension" of R134a. Where R134a is good for Sub-Zero evaporator temperature and/or super high condensing temperature, R410a is best for HVAC system temperatures. The only advantage is that the system is physically smaller than the older refrigerant filled systems. It was pretty much invented to be different and not work well with any other gas.

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