The pump should be fitted in a precise horizontal position. Which is one of the many reasons why you should always hire a Gas Safe registered engineer. Pump shaft incorrectly installedĪ poorly installed pump will lead to a world of problems. To stop the humming and release the air, many central heating pumps have a bleed screw which can be simply turned to rid the pump of excess air. This is when air builds up in the pump and causes a blockage. AirlockĬentral heating pump humming noises are most commonly caused by an airlock. These common central heating pump problems will help you to identify the possible problem. The best thing to do if you notice issues with your central heating system is to contact a professional heating engineer. Possible causes of a noisy central heating pumpĪs well as loud noises, an issue with the central heating pump can result in cold radiators and even leaking. Otherwise, you're likely to find it in the airing cupboard or under the stairs. This is so that it can pump the water as soon as the boiler has heated it up. In most cases, the central heating pump can be found pretty close to the boiler. An effective central heating pump will efficiently pump hot water to the radiators then back to the boiler. When you turn the central heating on, the hot water needs to circulate around to the radiators and that's the job of the central heating pump.ĭespite its relatively small size, the central heating pump has a big role to play in keeping your home warm. Free from any banging, clunking or gurgling noises. These common central heating pump problems will help you to identify the cause and get your central heating up and running again.