Dangers of H2S and salt air Hydrogen sulfide gas (H2S) forms in wastewater collection systems and can create septic conditions.
This gas has a particularly destructive oxidizing effect on aluminum in air conditioning coils and copper tubing, making coating all these surfaces mandatory.
This is why many HVAC contractors recommend coating every metal surface on air conditioning systems.
“The coil and tubing will still last longer than it would being uncoated because that is the most vulnerable part of an air conditioning system.
But eventually the uncoated surfaces will crumble around the coated parts.
Watson weighed in on his experiences with Baton Rouge wastewater facilities.
“The natural vibration of an air conditioning system will crack most coatings over time and when we do maintenance service on a wastewater unit, we have to move parts of the system around to do our inspections and most of the coatings tend to crack.
A study conducted by the Army Corps of Engineers in 2016 in its Engineer Research and Development Center stated: “Phenolic coating adhered better to the aluminum and copper than did the other coatings tested, so phenolic coatings still show a better adhesion to aluminum and copper than the newer coating method/systems.” “While phenols were first discovered in 1834, our engineers and scientists are constantly developing new formulations and applications, so our latest phenolic coating is really a new product,” said Christina Campbell, president of AME-TechniCoat.
“The aluminum in the coil deteriorates over time due to oxidation in the hydrogen sulfide and salt environment.” The metal breaks down and becomes less efficient, he explained, requiring more energy to do the same job.
We guarantee our coatings for 10 years.” “We have started to recommend Trane AC systems when the city buys from us,” said Watson.