In some worst scenario situations the clog is so negative and hardened, that the only real way to repair it really is to totally rebuild the drain line. We've only experienced a couple of circumstances that warranted this extreme tactic, but we do want to include it as another option. https://emiliano4zjrz.blogrelation.com/37226634/best-ways-to-clean-air-conditioners-in-dammam-things-to-know-before-you-buy