Quote:
Originally Posted by plbrdude
if its a really old system your evap coil might be on the supply air side, if it's fairly new even within 20 yr the evap coil should be in the return air side. that being said you could replace the evap coil in the air handler. not knowing brand i would guess that the coil could run anywhere between 275 to 425. plus near to 5-8lb of r-22 depending on tonnage if its all leaked out. maybe 4 to 6 hr in lbr. 22 could be $20+ per lb now, lbr rates for that area may be well higher than $60 per hr. you could be pushing $1000 for just that.
the condensor you speak of changing is the outside unit, you don't convert a condensing unit from 22 to 410a. a/c or heat pump you change the unit, which also means you change the a-coil, which in this case prolly means the air handler. the line set can be left and flushed if its been brazed, if its been stay bright soldered best to change it too as 410 pressures are well higher than 22. on a hot day your liquid side could push toward 500psi; wouldn't trust stay bright.
unfortunately you're prolly lookin at a sysyem change out.the only other option if you want a newer outside unit is to see about a dry 22 unit, then go a coil and ht pmp if it's available.
that's my 2 cents worth anyways.
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Thanks!
Yeah I knew you couldn't "convert" the outside condenser in the heat pump I was just thinking that since they have to replace the a-coil in the air handler (I'm assuming the a-coil and evap are same or am I way off here) that they could go with an a-coil that handles r410 (pretty sure the new Goodman's have same fittings) and go ahead and replace the heat pump's condenser as well. Or would you have to replace the entire heat pump?
I have no clue on the soldering, which obviously could be an issue.
Just so you know, the air handler is a Goodman A49-15, I think it may be from around 2000. Not sure on the make/model of heat pump but I know it was manufactured in July 2004.