Heating Boiler Repair: 3 Common Causes And Recommended Solutions For Strange Noises

If your building still relies on a heating boiler to produce heated water, you can usually expect the boiler to have an average lifespan between 10 and 15 years if it is a traditional gas boiler. An electric boiler will usually tend to have a shorter lifespan that is between 8 to 10 years. To ensure that the boiler will last as long as possible, be wary of any signs or indications of trouble brewing. In particular, you should keep an ear out for any strange and unusual noises that may be coming from the boiler. Contact a repairman immediately in order to prevent the issue from worsening. Here are 3 common causes and recommended solutions for when strange noises are coming from the boiler.

Air in the System

Strange gurgling sounds coming from the boiler, paired with inefficiency, can be a result of air in the system. This can be due to the fact that the heater was not sealed properly or that the boiler wasn't put back together correctly. To determine whether there is air in the heater boiler, simply open the manual air bleeder valve. If you hear the hissing sound of air escaping the valve, then it's likely that there's air in the system. On the other hand, if you see water bleed out, then it usually means that you're after the wrong culprit.

The most recommended solution is to simply drain and flush the heating boiler using a water feeder and the boiler drain. If you're unfamiliar with the concept or the technique, it's usually a good idea to hire a professional instead. The heated water and steam produced by the boiler can cause significant damages if you come into direct contact with it.

Low Water Pressure

Another common cause for weird banging sounds is if the water pressure of the boiler is too low. In general, if low water pressure is the problem, you'll have difficulty getting a good stream of hot water from your faucet or bath. In addition, you might even find that the water coming from the faucet and tap is simply not hot enough. In these situations, you should take a look at the PSI gauge attached to your boiler for more information.

There are many different solutions to low water pressure. Low water pressure might indicate that the PSI gauge in your tank needs to be repaired or replaced, or it might even indicate that either dust or dirt has accumulated inside the boiler. If you remove the gauge, you should be able to determine whether there any unwanted debris has accumulated on the inside of the pipes and the system. You might also want to look for leaks within the heating system.

Imminent Pump Failure

Imminent pump failure is another common cause for any strange noises that might be coming from your boiler. In fact, imminent pump failure is usually associated with strange banging noises. If you can't find anything wrong with your system, the problem might lie with the pumps. Simply replace the pumps with new ones and see whether your boiler is still making weird noises afterwards.

If you don't want to have to replace all of the pumps, it's a good idea to contact a professional. A professional can take the pumps apart to determine which areas are damaged or malfunctioning. Don't ignore strange banging noises, as imminent pump failure can cause significant damage to your boiler if left unattended to.


In most cases, a professional will be able to take a look at any additional issues that you are experiencing with your boiler to determine the main cause of the strange noises. Don't leave strange noises be. It's very likely that the strange noises are simply an indication of the troubles ahead. You want to get ahead of the problem and the situation by dealing with the strange noises as soon as they begin. Contact a company like Moorhead Machinery & Boiler Co. for more information.