Thank you for the clear and practical advice it’s saved me stress, time and money! These products contain gas boiler cover, but include other elements, should you need to cover more. It is below the dignity of my page to put a plumber on it, yet i have endured occasions! Alkaline drain cleaners are available in either solid or liquid state while the acidic ones are usually in liquid form. Wondering about how energy efficient your new boiler will really.