Another ad for a unproven product. You can use it all you want but it will never go into my units. LOL
There are billions of pounds of R-22 left and any price increase is because of inflation not supply and demand. R-22 is proven by a very long track record.
Yes R-22 will eventually run out OR get to expensive but that will be on he federal mandate date of the year 2020. That's 12 years away. Equipment manufactures will stop making R-22 new units much sooner. By then it will be better to buy the R-410 equipment and be done with it.
Just purchased 4 virgin 30 pound cylinders for the University. Paid $157.63 for each 30 pound cylinder. Still cheap if you ask me.
NU-22 or as it is better known as R-422B Einstein had a open mind and was a great inventor closed minds never learn
Correct about Einstein but you forgot to mention all his failures.
NU-R22B or R-422B is OK as a experimental refrigerant but unlike Einstein I chose to take the safe road since I would not want one of my customers/accounts to be used as a experiment with possible failure's.
Best to go from R-22 directly to R-410 instead of experimenting.
I hope you sell that NU-22.
Side note: Just the facts below.
“If something is not broken, don't fix it” is an expression we have
all heard. With new retrofit refrigerants on the market it may be
applicable when it comes to HVAC-R retrofits. If a system is working
well with R-22 or R-502, why change the refrigerant? Well, in
the case of R-502, it's easy: R-502 is a CFC that has not been produced
for many years, so it is expensive and scarce. In the case
of R-22, since it is relatively inexpensive compared to
R-502, the reasons are more complicated and may have to do
with corporate mandates, customer perception, planning for HCFC
phaseout, or in some cases, a lack of information.
In any case, other than doing nothing, a refrigerant retrofit
sounds like an easy and inexpensive alternative. What's easier
than just removing the old refrigerant, and replacing it with a
new one without really changing anything in the system?
The refrigerants NU-22® (ASHRAE R-417A) and OneShot®
(R-422) promise to be just that in a campaign of magazine
ads, on the web and in presentations. However, be careful!
Our refrigerants lab, located at our U.S. Research Center, King
of Prussia, PA, has tested both refrigerants. Using commonly
available air conditioning and refrigeration equipment in environmentally
controlled chambers with a wide variety of alternative
refrigerants compared to R-22, we have found most
of the claims to be somewhat exaggerated.
First, a drop in implies that no oil change is necessary. When
we tested NU-22® and OneShot® with mineral oil, the oil typically
used with R-22 and R-502, and monitored its level in the compressor
through a sight-glass, we observed the oil level dropped
below the compressor's OEM recommended minimum. Running a
compressor with low oil for extended periods could lead
to excessive wear and/or irreversible damage. Oil levels stayed
within appropriate limits when the systems were run with R-22
and mineral oil, or when the oil was switched to a POE. In our
opinion, not only is an oil change from mineral oil to POE recommended,
it is required to avoid compressor damage.
System capacity (the ability of a system to remove heat and
cool the particular application) also suffered in our tests despite
claims of improved performance by the manufacturer of NU-22®
and OneShot®. Figure 1 shows a comparison of the capacity of
these two refrigerants against R-22. On average, NU-22® has a
26.9% lower capacity than R-22, and OneShot® is below R-404A,
the standard R-502 OEM replacement, by an average of 19.1%,
and even below R-22 by 24.7%. Efficiency data, measured as
coefficient of performance (COP) also suffered with values 14.8%
lower than R-22 for NU-22® and up to 15% lower than R-404A for
Our test results have shown poor mineral oil compatibility
and sacrifices in both capacity and efficiency for NU-22® refrigerant
and OneShot® refrigerant. In our opinion, they are NOT “dropin”
refrigerants and should be used with an understanding of
For more information, please contact our technical manager,
Gus Rolotti, at firstname.lastname@example.org