QETTLE taps need a minimum of 1.5 bar pressure on both hot and cold water feeds. In the UK, it would be unusual for mains cold water pressure to be lower than 1.5 bar, and generally, if your home has a combi boiler or mains-fed hot water system (e.g., a Megaflo), you are likely to have good hot water pressure, too.
Take care if you have a gravity-fed plumbing system (where hot water is stored, typically in a loft space), as these systems can have lower pressure and will often need a helping hand in the form of a small pump.
If you are in doubt about your home’s water pressure, ask a qualified installer to measure it for you.
Our video about water pressure is also helpful.