R-32 vs R-454B
Greetings,
I need to replace my R-22 split system in the next year due to a leak and am curious if I should be looking at R32 or R454B equipment. Are techs seeing one having less issues than the other?
I was one vacation at an AirBNB a couple weeks ago and the first floor AC stopped working. The system was only 2 weeks old and the refrig. gas sensor in the air handler failed. Makes me a bit nervous about the new technology.
Thanks.
Comments
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where is the leak? i'd fix it if it is fixable.
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Doesn't matter. One is a blend. One isn't. The manufactures have picked theirs, mostly because they've been using it globally for years.
Did the sensor reset and start the system again?
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The only thing I've noticed so far is it seems like a lot of guys are having problems buying R454B. I'm sure that will change in the very near future, but right now I'd go with R32 unless I knew I had some 454 on hand.
If the system comes with enough of a chart for the job it's likely a moot point unless something goes wrong.
Single pipe 392sqft system with an EG-40 rated for 325sqft and it's silent and balanced at all times.
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did the sensor fail or did it detect refrigerant? If the sensor actually failed its a roughly 10 minute fix, if it detected refrigerant near the coil then it's finding a leak for you, letting you know the coil might be bad and the manufacturer gets to warranty it rather than paying a tech to chase down leaks. It doesn't matter what kind of refrigerant is in the system those sensors are pretty much the same either way, probably made by just a small handful of companies worldwide, they also don't just detect R-32 or R454B you could take a can of duster and spray it at the sensor and it will trigger
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The bad sensor in the AHU has nothing to do with the refrigerant
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There talking about a refrigerant detection sensor.
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I would use the R32 over a blend if I could .. Fracture would be out of the equation …
There was an error rendering this rich post.
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The refrigerant detection sensor has nothing to do with which refrigerant you choose though, it's the same sensor essentially just calibrated to go off at a different level depending on which refrigerant, you can blow a can of duster at either to trip them
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it’s amazing!
Mildly flammable refrigerants require detection systems but NG and LP water heaters, boilers, space heaters don’t!
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Edited my post to say R-32 instead of R-35. Typo on my part.
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Fire safety regulations have gone waco decades ago.
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I agree that the detection sensor has little to do with choosing between R-32 or R454B, but is there because of the flammability of those refrigerants. You wouldn't have the detection sensor in a system with non-flammable refrigerant.
That is why I think the failure of the detection sensor has the OP nervous about the new tech.
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