My Mixer tap in the kitchen has very low pressure on the hot water side. It is now down to a small trickle. All the other hot water taps in the house are fine. Will it be anything to do with valve in the tap? If so how do I go about replacing it, would it be the same as replacing a normal pillar tap valve?
You've probably got an airlock in the pipework leading to the tap, find a plastic cap which is a tight fit on the end of the tap but leaves the end clear. Turn on the hot then cold water and it should blow the airlock out.
If its a traditional technoogy tap replace the head gear - although it might be worth removing it and just replacing the washer. It's possible this may have perished, disintegrated and is obstructing the water flow.
If its a modern quarter turn ceramic disc type then you'll be looking at replacing the cartridge.
Both are as easy as replacing the head gear in a pillar tap. Just make sure the cold water supply is turned off as well as the hot! Hot and cold cross over in a mixer tap!