Blocked Central Heating Pipes Now
Disclaimer: I am not a plumber. This is my experience as a homeowner. Always consult a Gas Safe engineer (UK) or licensed HVAC tech (US) before cutting into your heating system.
The most prevalent cause of blockages is "sludge," a thick, black or brown mud-like substance. This forms when water reacts with the iron inside steel radiators, a process accelerated by the introduction of fresh oxygen through leaks or improper maintenance. As the metal corrodes, the resulting debris circulates and settles in the lowest points of the system or inside narrow pipes. blocked central heating pipes
I don;t know which is best, but I understand the latest ones work by both magnetic and 'swirling' out sediment (like a Dyson). It' Screwfix Community Forum Disclaimer: I am not a plumber
Locate the blocked pipe: Use an infrared thermometer or just feel along the pipe run. You'll find a spot where the pipe goes from hot to cold in 2 inches. Method: Isolate the system, drain below the blockage, cut the pipe, and use a wet-dry vacuum on the open end. I sucked out a golf-ball sized clump of black sludge. Then, I fed a drain snake (yes, a plumbing auger) into the pipe to break up the rest. Warning: This is messy, and if you have microbore (8-10mm) pipes, you will likely puncture them. The most prevalent cause of blockages is "sludge,"