It was installed in a slide which greatly reduces the chimney affect which in turn reduces the cooling. Rear clearance and venting is critical with the installation of gas/electric units. it took nearly 24 hours to cool down to proper temps even in mild outdoor temps. Once traveling, the temperature would increase. The longer I drove the warmer it got even in 70 degree weather.
I tried all kinds of venting mods, fans, door seals, etc., to no avail. Being that we live in FL and travel mostly the SE USA this was not acceptable. I removed it and sold it on-line. It functioned fine outside the RV in the garage (got down to proper temps and maintained) so I think it was an installation clearance issue. The manufacturers installation instructions are very, very specific and if not followed will make a difference. We know how RVs are put together so do you really expect one to be properly installed.
After reading of so many people unhappy with the Norcold cooling performance I said forget it. The residential cools down in 3 hours even in 90+ degree weather. It is the best RV mod I have ever had the 2nd being the RV Flex Armor no-maintenance roof.
If I had to do it over again, I would not have ordered the Norcold and then just done the mod as I did. The Samsung fit in the exact cutout as the Norcold. However, I pretty much recouped the added expense of the optional Norcold by selling it which paid for the Samsung.
2018 GMC Sierra 3500 DRW 4x4 Duramax/Allison
2014 Lifestyle LS36FW
St Augustine, FL