R-22 replacement

[shogun7]

As I was perusing my "Indoor Comfort News" I came across an ad that said " If choice R-421 and R-22 had the same mom (mum), even she wouldn't be able to tell them apart. R-421 is the superior replacement fr R-22. no oil change required, ad it can be topped off multiple times.
for more go to: www.rmsgas.com

[rbartlett]

i have used the '9 range for years with much sucess

http://www.isceon-refrigerants.co.uk...9-product.html

i believe they were designed by s.f.pearson (marc's mate) of star ref

http://www.star-ref.co.uk/

cheers

richard