Hello there.

Yes this is a type of water hammer, any loud banging A pipe makes is usually a type of water hammer. Now what’s causing it is the question.

Is it a pressure problem i.e is there a slightly closed valve or a small bore/ crushed pipe pipe or a slight blockage on the system or maybe a ball valve in one of your tanks that’s all limescaled up?

Or is it a result of what’s called Kettling. Whereby limescale buildup in the boiler Is allowing super heated particulates Of limes scale and air bubbles to fire at high speed up into the cold pipes on your heating circuit this can sometimes sound like a rocket going off making a right banging clatter.

If it’s a kettling issue then this can usually be solved by adding a silencer/ cleaner/conditioning fluid to your heating system. This conditions and cleans preventing further noise.

If it’s pressure vibrations when running a tap then check your ball valves on your tanks in the loft are not all scaled up open up any isolation valves under sinks etc that look to be cranked a 1/4 shut etc see if that helps, also if you can locate where pipes are making noise and check are they properly fitted ie clipped in and not loose snaked under floors etc.

WATER HAMMER, can have many causes ,unclipped pipework,ball valve judder caused by high pressure,loose jumpers in some stop taps,you can usually cure it by clipping pipework,fitting equilibrium ball valves,reducing water pressure, get a qualified plumber to check it out for you,you can also fit a water hammer arrestor.

How to Fix Water Hammer if Your Home was Built in the 1960’s or Prior
Finding the appropriate fix to water hammer in your pipes depends on the age of your plumbing. Older homes are often more likely to experience water hammer. Plumbing systems installed during or before the 1960’s used pipes that were installed with air pockets to act as shock absorbers and counteract water hammer. Unfortunately, the air pockets in the pipes can fill with water, causing them to lose their effectiveness.

Fortunately, there’s an easy fix for water hammer in these plumbing systems. Start by switching the water supply off at the main. Open all the faucets, flush the toilets and run all of the other water-using appliances like the dishwasher and washing machine. As a result, all of the water held in the pipes will be flushed out of the system and then water can be switched back on at the main.

This sounds like water hammer, could potentially be caused by anything from a tap to a faulty fill valve in the toilet, but due to this being a fault on both heating and hot water I’m thinking either insufficient clipping for pipes or maybe even your diverter valve? Depending on what type of system you have installed