Tin Foil Covering For Insulation In Compressor By Gain City?

Hi,

I was impressed by the showroom that Gain city had on the insulation material/ method they used during air con installation. As such, I bought a Sys-3 air con from them, changing the insulation material to Armaflex, a thicker plastic insulation.

Yesterday, they installed the aircon.

Originally, I thought they will put tin foil on the insulation at the compressor situated outside the flat,

as similar to the showroom.

But when installation done, I noticed there is no tin foil.

Installer says use Armaflex, no need tin foil.

Any Gain city - Armaflex users here have any comments to share?

Is tin foil really useful, or practical in outside insulation, or protect from sunlight?

Edited May 29, 200818 yr by jpcc