Combi boilers provides central heating and hot water on demand. With a combi boiler there is no need for tanks or storage cylinders. One common issue is a fluctuating hot water supply when more than one tap is in use, so a slower flow is required to keep up the heat. They are installed, as with all gas work in your home, by a Gas Safe heating engineer, and should be annually serviced. Heating engineers may also improve the heat-to-pressure balance as needed.
Where water pressure in your home is too low, have your pipes checked for blockages and ask your heating engineer whether a water booster would help improve the pressure. Showers are often enjoyed far more if hot and powerful, and many people do not even realise how weak their shower power is until they have a different experience at a hotel or as a houseguest.
Limescale can also be a massive problem with fixtures, fittings and pipes in the home. Plumbers might suggest water softening solution, such as installing a water softener or magnetic softener.
There are also some easy fixes for limescale. You can check washing machine detergents as some are formulated to tackle limescale head-on. Also, you can lower temperatures of your dishwasher, washing machine and tank storage to reduce limescale in pipes and appliances, as well as using the various sprays available in supermarkets.