Regarding AC cleaning service

sauravghosh

Adept
Our Hitachi windows unit underwent a cleaning service last week by company service person. They cleaned with liquid soap, water, bucket, mug, cloth, brush.... 900 rs for that. I asked why not foam service, got reply that foam service is not required for my AC as there was not much dust accumulation, but what I doubt is when they said foam service is not good for the machine as it corrodes due to foam being of chemical nature.
Please apprise whether we were lied to.
 

enthusiast29

Skilled
1) 900 INR for a window AC is more than double the market rate.
2) AC foam/soap wash shouldn't be needed and TBH those chemicals are harmful to copper coils can cause corrosion faster overtime if not cleaned properly.
3) Best is to pressure wash (only if there's a lot of visible dust clogging) the coils/fins from front and back, no soap or anything else.