Selling house, old R22-type AC unit solution?
Jim
3 years ago
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mike_home
3 years agoJim
3 years agoRelated Discussions
Goodman R22 compressor died. Upgrade or replace?
Comments (6)Thanks for your reply. I like lists, so forgive the format: - I thought Goodman warranty was only for original owner? I can see the serial number, but should they allow it still? - The unit that is in the attic, does that need to replaced (plus any additional duct work, etc) if we replace the outside compressor with an R410 unit? I don't think he's shirking the work away but rather thinks it's not necessary to upgrade. There's added costs in the labor. - the 2200 square feet is the inside the walls dimensions. It doesn't take into effect the high ceilings, especially the cathedral ceiling foyer and family room. In any case, wouldn't I have to replace the attic unit if I wanted to go smaller? are you thinking it's a waste of energy? - Any further thoughts on zoning? We have 1 zone for upstairs and downstairs. I thought of zoning to save on costs over time, but if it costs thousands to add 2nd furnace, split off the duct work and get another unit, is it really worth it? all bedrooms are on same floor, so this would just be an upstairs vs downstairs zone thing. Thanks!...See MoreReplacing AC Outside Condenser Unit
Comments (3)You are replacing a 3 1/2 ton AC condenser? Price includes new matching Lennox evap coil? It must be a matching Lennox evap coil. What brand, model, size is your furnace? The Elite 13 model is XC13. Confirm back. It takes the R410a refrigerant so the question of recovering and reusing old R-22 refrigerant is not relevant or applicable. This is not a bad condenser, relatively quiet. Your old condenser has no value other than scrap or if someone might use for parts. Unlikely though and not practical. Price is too good and I would be looking behind the numbers. Something not right here. IMO Here is a link that might be useful: Lennox Elite 13...See MoreInstalling AC in an old house with radiators?
Comments (10)I have a 1930's colonial and am also in NJ. I had a conventional system installed in 2009 and my only regret is that I didn't do it sooner. I received 4 estimates - 1 from a company that only installed high velocity systems, 2 from places that installed both high velocity and conventional and 1 from a company that only installed conventional. Three of the 4 recommended high velocity systems. Most of the estimates per pretty close in price, about 12K. Surprisingly, all of the companies that install the HV system told me they would have to make holes in wall of the staircase to run the hoses to my family room addition. One company suggested that I install a split system in the FR. The conventional a/c installer was able to feed the flexible ductwork through a 2nd floor closet into the FR ceiling. All bedrooms, bathrooms and 1st floor rooms have at least one vent in the ceiling. I lost some closet space in the bedrooms and in the coat closet, but it is a minimal loss. Before deciding on which type of a/c to install, I posted on the "ask the pro's" section of the hvac forum - http://hvac-talk.com/vbb/forum.php They were decidedly pro conventional system and explained the pros and cons of each....See MoreConsequences of 12/31/09 R22 Refrigerant Phase out to Heat Pump ?
Comments (19)Hi akrauss....Yes, R-422 is officially Dupont's R-422b and it has a capacity loss of about 15% over R-22. Heat Siphon is likely telling you R-422 is higher efficiency because they do not have any 410a product to offer yet and can offer a "green" solution by simply changing the refrigerant in their R-22 systems to R-422 as both are compatible with mineral oil that is used in R-22 compresors. My guess is heat siphon will have 410a a year from now due to the higher R-422 expense when compared to R-410a. This gap in refrigerant price will only widen as R-410a production ramps up and R-422 production dies a natural death due to low demand. Related to #3, R-410a is a genuine Dupont refrigerant that is not a drop in for anything. It is a stand alone refrigerant that was designed from the ground up as a "green" refrigerant in the early 90's that does not contain hydrofluorocarbons. R-410a can not be dropped into an existing R-22 unit, because it runs at considerably higher pressures that would damage the R-22 compressor and other components in the system. Also R-410a is not compatible with mineral oil that is used in R-22 compressors. The R-410a compressors are charged with POE oil which is compatible with R-410a and are designed for the higher pressures. R-410a is a more efficient refrigerant than R-22 due to it's lower viscosity and therefore lower pressure drops in the system. I do not doubt that Heat Siphon is selling R-422 units overseas. This is because Europe mandated "green" refrigerants years ago and the only way Heat Siphon could sell product to them is to use a green refrigerant such as R-422 or another refrigerant that is used widely in Europe which is R-407c. R-407c requires POE oil just like R-410a so R-407c systems require special compressors that are priced accordingly. Heat Siphon is using R-422 because it is a direct drop-in and they can still use the R-22 compresors and other components as-is, all they have to do is change refrigerant if the unit is destined for Europe. Unfortunately, these Europe units are not as efficient if they have R-422 due to the capacity drop I mentioned earlier. In the pool industry though, I find that there are no efficiency standards and there are lots of false marketing claims out there...mostly heat pumps and pool pumps from what I'm learning from being an HVAC guy who is also a pool enthusiast. Sorry for the long winded message, but I think you were asking for this level of detail. Lastly, I would definitely chose R-410a over R-22 or R-422 units. It will offer the best life cycle cost. Both R-22 and R-422 will be expensive in the near future as the life of both refrigerants is limited. R-410a's life has just begun and will likely not be short-lived. Hope this helps!...See MoreBruce in Northern Virginia
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