Got a quote for new a/c system. Contractor is suggesting replacing the copper pipe for 400 extra.Says its better to replace it for the new refrigerant as the old piping contains deposits from the old refrigerant that will degrade the new type. I don‘t know, but this smells like he may be trying to make easy money. So, the question is. is this usual and customary and normal? Thanks in advance for you answer. And, please don‘t reply unless you have experience in hvac.
No, he should not go fly a kite, he is absolutely correct; When changing systems and doing the required changeover to R410a refrigerant, the R22 line sets do indeed have non-compatible (R22 uses a completely different oil than R410a) oil deposits inside AND the wall thickness of the line sets must be of a thicker gauge to allow for the much higher pressures that R410a produces. The only thing I can say about the contractor is that he should have shown you the professionalism to tell you the same thing I just did
Ash him to fly kite. He is support to purging nitrogen and vaccum before charge new refrigerant. As long as same capacity of FCU install, no need to change piping unless go for bigger and pipe need to changedue to different pipe size.
Ash him to fly kite. He is support to purging nitrogen and vaccum before charge new refrigerant. As long as same capacity of FCU install, no need to change piping unless go for bigger and pipe need to changedue to different pipe size.
No, he should not go fly a kite, he is absolutely correct; When changing systems and doing the required changeover to R410a refrigerant, the R22 line sets do indeed have non-compatible (R22 uses a completely different oil than R410a) oil deposits inside AND the wall thickness of the line sets must be of a thicker gauge to allow for the much higher pressures that R410a produces. The only thing I can say about the contractor is that he should have shown you the professionalism to tell you the same thing I just did
