Spooky sounds in the house? Call the plumber!
Sounds in the central heating system
In a household, it is important for the central heating system to be inconspicuous and solely focused on effectively heating the home. A properly maintained and functioning central heating system should be able to accomplish this task with minimal noise. However, if there are persistent and bothersome noises coming from the central heating, it is crucial to have a qualified plumber thoroughly investigate and resolve any underlying issues.
A spooky sound emanating from the heating system or boiler can be quite unsettling. These mysterious noises can range from rattling and banging to whistling and hissing. Understanding the types of sounds and their potential causes is essential in addressing any underlying issues and ensuring the proper functioning of the heating system. Let’s explore the different types of spooky sounds that can arise from a heating system or boiler and discuss their possible causes.
Rattling or Banging
One of the most common spooky sounds is a rattling or banging noise. This noise can occur when the heating system or boiler is turned on or off. The cause of this sound is often attributed to the expansion and contraction of the metal components due to temperature changes. As the system heats up or cools down, the metal pipes and ducts may expand or contract, resulting in a rattling or banging noise. If there’s insufficient room beneath the floorboards for this to happen, then noises will occur. The reason for this is that they rub on other surfaces, such as walls, flooring and brackets. It is worth checking out the pipework to make sure it is secured correctly and cannot move. If the pipes have room to expand but are still making a noise, pack some light insulation around the pipe as that should help to limit movement and dull the sound.This can solve a lot of odd noises with your pipework.
If you are experiencing loud banging noises in the copper pipes, another possible reason for that the thermostat on your boiler is set too high, indicating an issue with overheating. To address this problem, try lowering the thermostat setting and observe if it helps resolve the issue.
Another probable cause of banging pipes in a central heating is the accumulation of limescale, sludge-like substances, and debris. To address this issue, a specialized cleaner can be utilized to flush out the pipes and effectively remove any excess scale.
If your boiler is not regularly serviced, you may notice an increase in noise occurrences when turning it on or when using hot water.
Installing a Magna clean filter can also be a beneficial step to eliminate sludge or debris from your system. Moreover, these filters are effective in reducing carbon emissions when equipped with an auto bleed valve.
Water hammering
When you hear a banging noise after opening the taps in your bathroom, it is commonly referred to as “water hammering.” This issue can arise due to various factors, including improperly secured pipework beneath the floorboards, overheating, or even a small amount of air in the heating system.
One of the primary culprits behind banging pipework is the inadequate securing of copper pipes beneath the floor. To mitigate excessive rattling, it is essential to ensure proper fastening of these pipes. A straightforward solution to address the problem of banging pipes is to place some felt around each pipe beneath the floorboards. Pay close attention to areas where pipes come into contact with joists or other pipes, and wrap a small amount of felt around them to create a snug fit.
If you have already sought assistance but the issue persists, it might be worth considering the use of plastic pipework instead. Plastic pipes offer greater flexibility and generate significantly less noise compared to their copper counterparts.
Water hammering can also occur when the flow of water is abruptly reversed, such as when turning off a tap. As this problem can potentially damage pipework, it is advisable to seek the expertise of a professional to investigate and resolve the issue.
Whistling or Hissing
Another eerie sound that can be heard from a central heating system or boiler is a whistling or hissing noise. This sound is typically caused by air escaping from the system. Air can enter the system through leaks or gaps in the pipes, valves, or radiators. As the air passes through narrow openings, it creates a whistling or hissing sound. Additionally, a faulty pressure relief valve or a malfunctioning pump can also cause these sounds.
Humming and buzzing
If you encounter a peculiar humming noise from your central heating system, it could indicate a malfunction in the heating elements of your immersion heater.
Next, it is essential to ensure that the thermostat is functioning correctly. If it is and your central heating system still emits an humming noise, another area to investigate is the central heating pump, as it is often the primary cause of this type of noise in a central heating. This sound may also be accompanied by vibrations, indicating an issue with the pump itself. Similar to pipework concerns, the first step is to verify that the pump is securely fastened, as loose fittings can cause vibrations and the resulting humming noise. Installing simple brackets can effectively secure the pump and alleviate the issue. As a quick fix, you can also try placing rubber pads under the boiler to absorb vibrations.
Another reason for the pump to produce a humming noise is if it is running at a high speed. If you suspect this to be the cause, it is advisable to seek professional advice to thoroughly examine the problem and potentially adjust the pump speed. However, it is important to note that slowing down the pump may prolong the heating process, which may not be an ideal solution in certain cases.
Gurgling or Bubbling
A gurgling or bubbling noise is often associated with trapped air or water in the central heating system or boiler. When air or water becomes trapped in the pipes or radiators, it can create a gurgling or bubbling sound as it moves through the system. This can be caused by improper bleeding of the radiators, low water pressure, or a malfunctioning pump.
Gurgling, light tapping noises or clicking type noises sounds can be caused by radiators that require bleeding. It’s important to fix this issue as soon as you realise it is there. This is easily solved by opening the bleed valve to allow excess air to escape. Apart from having a noisy radiator, another good way to check for trapped air is to feel the radiator. If it feels cold at the top but hot at the bottom, then there is trapped air inside.
Clanking or Knocking
A clanking or knocking sound can be quite eerie and is usually indicative of a more serious issue. This sound can be caused by a variety of factors, including a malfunctioning pump, a faulty motor, or loose components within the heating system or boiler. It is important to address this sound promptly as it may lead to further damage if left unattended. Seeking professional assistance is recommended to diagnose and resolve the underlying problem.
Boiler spooky sounds
During regular operation, it is common for boilers to generate some noise, often resembling gurgling sounds. In most cases, this is considered normal and nothing to be concerned about.
However, if you notice any unusual or alarming noises coming from your boiler, or if the typical sound of your boiler has changed, it could indicate a more significant problem. In such instances, it is advisable to seek the assistance of a professional.
If your boiler is producing louder or unfamiliar noises, it is important to investigate the issue and make necessary adjustments. These unusual sounds may be indicative of a more serious underlying problem. Therefore, if you suspect that your boiler is emitting abnormal noises or if there has been a noticeable change in its sound, it is crucial to contact an expert for further evaluation.
Gurgling noise
A boiler that produces excessive noise may also be attributed to a low water flow within the system. It is crucial to understand that modern gas boilers require a specific flow rate to function effectively.
Verifying the correct flow rate is essential for diagnosing the issue and preventing your boiler from making gurgling sounds. You can typically find the required flow rate in your boiler manual. If you encounter difficulties, reaching out to the manufacturer for assistance and obtaining the necessary information is a viable option.
Kettling sound
If a boiler is not functioning properly, it may produce a noise known as “kettling.” This term is derived from the sound made by a boiling kettle, and a boiler can emit a similar noise when it is not operating correctly. This issue arises due to the accumulation of limescale within the boiler.
The limescale settles and obstructs the water flow, causing the water trapped inside the heat exchanger to become excessively hot. As the water reaches boiling point and expands into steam, the boiler emits a kettling noise reminiscent of a whistling kettle. This occurrence is quite common in older heating systems.
To address this problem, it is necessary to contact a gas heating engineer. The noisy boiler can be flushed out to resolve the issue, eliminating the need for a new boiler replacement and instead requiring general maintenance from a professional engineer. Adding a descaler to the feed and expansion tank can effectively remove the excess limescale. This not only eliminates the noise produced by the boiler but also enhances its longevity and efficiency by facilitating smoother water flow throughout the system.
Dripping noise
If you hear the sound of dripping coming from your boiler or the pipework of your central heating system, it is important to investigate the possibility of a leak. Look for any noticeable stains in and around the boiler and pipework as indicators. If you suspect a leak in your boiler or central heating system, it is crucial to address the issue promptly. Never attempt to fix a leak in your central heating system yourself; instead, contact a professional gas engineer to accurately diagnose and resolve the problem.
A leak in your boiler often occurs when the pressure is too high, leading to the development of leaks. Additionally, the deterioration of the boiler components, especially in older boilers, can also contribute to leaks. In certain cases, boiler replacement with a newer and more efficient model may be more cost-effective.
Summary
Spooky sounds emanating from a central heating system or boiler can be unsettling, and although some may initially cause concern, most can be easily resolved.
Understanding the types of sounds and their potential causes is crucial in addressing any underlying issues and ensuring the proper functioning of the central heating system. Whether it’s a rattling or banging noise, a whistling or hissing sound, a gurgling or bubbling noise, or a clanking or knocking sound, it is important to investigate and resolve the issue promptly to prevent further damage and ensure a comfortable and safe central heating system.
If you hear unusual noises coming from your central heating system, it is advisable to consult a professional to ensure that the system is functioning correctly. Neglecting proper maintenance of your central heating system can result in significant expenses in the future, so it is always better to address any issues promptly.
If you have any doubts or concerns about the noises your central heating system is making, the safest course of action is to contact our friendly boiler repairs team at KoNi Gas Home Services by calling 0779 137 54 17 or leaving us a message here. We will be able to assess the situation and provide the necessary assistance.
Pleased note: Always follow the manufacturers guidelines to restarting your boiler, and if you’re unsure, give them a call.
