The pressure on my hot water has been running slow for a while yesterday it started stopping altogether after a few minutes cold water is coming in fine and water is heting up I have a normal gas boiler any ideas

Is the entire house affected or just one fixture? How old is the boiler? Is this boiler a hot water heating system or a water heater? Do you flush the minerals built up in your boiler out on a regular maintenance schedule? Let me know, Tom