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Our Blog | Eric Collier | Heating Engineers | South Wales


5 Most Common Boiler Problems & How To Spot Them

What are common problems with boilers not working?


If you notice that your boiler has started to cause you issues and has broken down, it can be a cause for concern particularly if it has broken down within the winter months. From your radiators not working to no hot water being available, it can be a real concern to your own safety and those that you live with, especially if your boiler has packed in deep into winter.


Therefore, it is important that you get it repaired quickly by a professional boiler repair company. Here at Eric Collier and Son, we are the leading boiler repair and installation company in the South Wales area and have seen our fair share of different boiler problems in households across Wales. 


Throughout this article, we will explore five of the most common problems we typically see across the South Wales area and will provide you with some helpful tips to help you spot these problems. This way you can avoid having to face a complete breakdown of your boiler allowing you to intervene quickly and get an expert out to your home, not only saving you effort and more issuers but also money on repairs too. 


The five biggest causes of boiler breakdown

From boiler leaks to the pilot light going out, there is no boiler problem that we haven’t come across before. From being in the industry since 1971, it is fair to say that we have a good track record for understanding what types of problems most people face with boilers, especially when it comes to those winter months in the UK. Therefore, we have compiled a list of five of the common boiler problems you may be experiencing. 


The five most common causes of boiler breakdowns include:


  1. Boiler leaks
  2. No heating or hot water
  3. Radiator faults
  4. Low boiler pressure
  5. The pilot light keeps going out


1. Boiler leaks

One of the most common boiler problems that we typically see on a day-to-day basis is a boiler leak. If you notice that your boiler has puddles beneath it or damp patches near the boiler, indicating water escaping the system, it is clear that your boiler is leaking. 


Unusual sounds, such as dripping or hissing, might suggest a leak in the pipes. Changes in the boiler’s behaviour, like a drop in pressure or reduced performance, could be signs of a leak affecting its efficiency. Additionally, visible corrosion, rust, or water stains on the boiler or pipes may indicate ongoing leaks.


A leak is a serious issue and needs to be repaired by a qualified boiler repairs expert. One important factor to remember is to never try and repair your boiler leak yourself. Not only can it be a huge risk to your health and safety but also can cause irreparable damage to the boiler itself costing you more money on a new boiler installation. If you live in the South Wales area speak with us today on 02920 508711 and get a boiler repair expert sent out to your home quickly. 

2. No heating or hot water

Another frequent boiler problem is that your property has been left with no heating or hot water. If you are experiencing this issue, it is clear that your boiler is experiencing some sort of issue.


Some of the most common reasons as to why your boiler is not heating your property or water include the boiler pressure becoming too high or low so the system has automatically turned off. Another reason could be that your boiler has become disconnected form the power, gas or water supply. Piping issues such as frozen condensate pipes are also frequent issues that can stop a boiler from functioning.


If your property is experiencing no heat or no hot water it is recommended that you get in contact with a professional boiler repair expert who will be able to diagnose and amend the issue. 

3. Radiator faults


A radiator fault can be hard to determine however if you have noticed a specific group or certain radiators are not performing as they should be, there may be a particular reason why this occurring. 


Feeling for uneven heating across radiators or detecting cold spots, particularly near the top or bottom of the radiator, indicates potential issues like trapped air or sludge accumulation. Listen for unusual sounds such as gurgling or banging emanating from the radiators, this suggests that air or debris in the system and will need to be repaired. 


Check for leaks or dampness around the radiator valves or connections, and note if certain radiators fail to heat up at all when the system is on. These signs hint at possible blockages or valve problems. 


Given the complexity of heating systems, consulting a professional plumber or heating engineer is highly advised to accurately diagnose and fix the issue at hand.

4. Low boiler pressure

Low boiler pressure is another common fault that we typically see when it comes to repairing a boiler system. Low boiler pressure can lead to cold radiators and a lack of hot water throughout your property.


You can identify low boiler pressure by checking the boiler display panel and looking at the measurement that is shown. The average pressure level of a boiler should be around 1.5 bars therefore, if your boiler is far below this, it is recommended that you get in contact with a boiler repair expert so they can identify the issue at hand. 

5. The pilot light keeps going out


The pilot light going out is a problem we also face when dealing with faulty boilers and heating systems. The pilot light is the small gas burner which is kept lit up permanently. If the light goes out, it is a common problem that can be caused by a build-up on the gas nozzle or a draft of wind blowing the flame out. A broken thermocouple could also be stopping the gas supply hence why the light is out. 


To check whether your boiler is working you can test that the gas appliances in your home are working as normal. If the gas supply is fine, attempt to relight the pilot light following your boiler manufacturer’s instructions from the manual. In case you’ve misplaced the manual, it’s often available on the manufacturer’s website. Notably, this issue is more prevalent in older boilers; modern systems typically use electronic ignition rather than pilot lights. If the pilot light problem persists despite troubleshooting, it might be advisable to consider installing a new boiler for enhanced reliability and efficiency.


If your appliances are not working after checking that your pilot light is out, please speak with a qualified boiler repairs expert. 




In conclusion, it is important to be vigilant if you notice any issues with your boiler on your property. Not only can staying vigilant help save you time and prevent further damage to the heating system in your home but it can also save you a lot of money on boiler repairs if you notice the common signs early enough.


Not to mention that regular boiler maintenance can not only prevent these five common issues mentioned throughout this article from occurring but also guarantee a consistently efficient and safe heating system that is unlikely to break down during the winter months when you need it the most.


If you notice that you are suffering from any of the five boiler problems mentioned in this article or are unsure about the current problem your boiler is suffering from, here at Eric Collier & Son we can provide rapid, reliable and expert boiler repairs. Remember, in the face of a plumbing emergency, the sooner you act, the better the outcome. 


For any emergency plumbing needs in Cardiff and South Wales, don’t hesitate to call us at 02920 508711 or contact us online. We’re here to ensure your plumbing emergencies are handled with the utmost professionalism and efficiency.

Plumbing issues can be very inconvenient to you and your family. Understanding what an emergency plumbing is, can save you from extensive property damage and ensure your home or business stays safe and functional. In this blog, we’ll delve into various scenarios that are widely recognized as plumbing emergencies, explaining why quick action is essential and how Eric Collier & Son emergency plumbing in Cardiff can help.


Burst Pipes: A Common Hazard

One of the most frequent and alarming plumbing emergencies is a burst pipe. Particularly common in the colder months, when the British climate can lead pipes to freeze and then burst, this issue can occur at any time. A burst pipe can unleash gallons of water in minutes, causing significant water damage.

If you face a burst pipe, shut off the main water supply immediately. Then, it’s crucial to call a specialist team like Eric Collier & Son. Our 24/7 rapid response ensures that we’re available around the clock to tackle such emergencies.


Clogged Drains

A clogged toilet, bath, or shower drain is another common plumbing emergency. You’ll notice it when these fixtures overflow during water use, often due to clogs or a faulty float mechanism.

First, locate and turn off your property’s stop valve. Then, contact an emergency plumbing service to handle the issue efficiently, preventing further disruption or damage.


The Menace of Leaky Pipes

Even a minor leak should be considered an emergency due to its potential to cause widespread damage quickly. Leaky pipes can lead to electrical hazards, mould growth, and structural damage.

Be alert f0r musty odours, ceiling stains, or discoloured paint, as these can indicate a leak. If you suspect a leak, act quickly to minimise damage and costs.


Water Heater 

Problems with your water heater, like no hot water or irregular temperatures, should prompt an immediate call to a plumber. Sounds like bubbling or dripping from the main tank are red flags for leaks needing professional repair.

Similarly, a damaged boiler demands urgent attention, as it can leak harmful gases without detectable odours, posing a severe risk.


The Broad Scope of Emergency Plumbing

At Eric Collier & Son, we’re equipped to handle a wide range of plumbing emergencies, serving both domestic and commercial properties in Cardiff and across South Wales. With over 40 years of experience, our team is adept at addressing any plumbing issue, big or small.

For business owners, a plumbing emergency can be particularly disruptive, and even cause a loss in operations causing damage to the business financially. Our team uses the latest technology and methods to ensure swift and effective repairs, minimising downtime and financial impact.


Why Choose Eric Collier & Son for Emergency Plumbing?

Our extensive experience and technical know-how place us among Cardiff’s leading emergency plumbing services. Understanding the urgency of plumbing emergencies, we offer a 24/7 service to address your issues promptly. Utilising cutting-edge technologies, we ensure that your plumbing problems are solved efficiently and effectively. We cater to both home and business needs, understanding the unique challenges each type of property presents. Ensuring the safety of your property and the quality of our work are our top priorities.


In Conclusion

Recognizing a plumbing emergency and acting swiftly can be the difference between a quick fix and a major headache. Whether it’s a burst pipe, clogged drain, leaky pipe, or water heater issue, Eric Collier & Son is here to provide rapid, reliable, and expert service. Remember, in the face of a plumbing emergency, the sooner you act, the better the outcome. 

For any emergency plumbing needs in Cardiff and South Wales, don’t hesitate to call us at 02920 508711 or simply get in contact. We’re here to ensure your plumbing emergencies are handled with the utmost professionalism and efficiency.


What Is Considered Emergency Plumbing?
What happens during a boiler installation?

Read on to dive into the world of home heating to explore what really happens during a boiler installation. Whether you’re considering an upgrade to your heating system or just curious about the process, this guide is designed to shed light on each step, without getting bogged down.

Understanding the Basics of Boiler Installation

Before we jump into it,, let’s understand what a boiler is. Simply put, a boiler is a heating unit that uses water or steam to warm your home. It’s a central part of many heating systems, especially in areas with colder weather..


Step 1: Choosing the Right Boiler

It’s crucial to start with selecting the right boiler for your home. This decision is crucial and depends on factors like the size of your home, your heating needs, and energy efficiency. It’s often best to consult with a professional boiler installer in Cardiff like Eric Collier, who can recommend the best type of boiler, some examples are combi, system, or conventional.


Step 2: Pre-Installation Checks and Preparation

Once you’ve picked your boiler, a qualified technician will visit your home for a pre-installation assessment. They’ll check your current heating system, the location where the new boiler will go, and ensure that everything is ready for a smooth installation. This step might also involve discussing any additional work needed, like replacing old pipes or radiators.


Step 3: Removing the Old Boiler

If you’re replacing an existing boiler, the next step is safely removing it. This involves shutting off the water and power supply and carefully dismantling the old unit. It’s essential that the installer handles this step with care to avoid damage to your home’s heating infrastructure.


Step 4: Installing the New Boiler

Now, it’s time for the main piece, installing the new boiler. This process can take several hours and involves connecting the boiler to your water, gas, and electricity supplies. The technician will also install any new pipes or radiators needed to ensure your heating system works efficiently.


Step 5: Testing and Commissioning

After the boiler is installed, it’s crucial to test it to make sure everything is running smoothly. The technician will check for leaks, test the pressure, and ensure the boiler ignites properly. This step is vital for your safety and the efficiency of your heating system.


Step 6: Final Touches and Cleanup

Once the installation and testing are complete, the technician will do some final checks, set up the boiler controls according to your preferences, and guide you through the basic operation of your new heating system. After this, they’ll clean up the workspace, leaving your home just as they found it.


Step 7: Aftercare and Maintenance

The final step in the boiler installation process is understanding the aftercare and maintenance. Your technician should provide you with information on how to care for your new boiler, including regular maintenance checks and what to do if you encounter any issues, like contacting a boiler repair service in cardiff.


Why Professional Installation Matters

It’s worth noting that boiler installation is not a DIY job. It requires specific skills, knowledge, and certification, especially when dealing with gas boilers. Hiring a professional boiler Installation like Eric Collier, ensures that your boiler is installed safely and efficiently, adhering to all relevant regulations and standards.


Common Myths About Boiler Installation

Myth 1: Boiler Installation is Quick and Easy

While professional installers make the process look straightforward, it’s a complex task involving careful planning, technical knowledge, and adherence to safety standards.


Myth 2: Any Technician Can Install a Boiler

Not true! Boiler installation, especially for gas boilers, requires certified professionals who are trained to handle these systems safely and efficiently.


Myth 3: New Boilers Work Instantly at Maximum Efficiency

While modern boilers are designed for efficiency, they may need fine-tuning and a short period of running to reach their optimal performance level.



Installing a new boiler might seem daunting, but understanding the process can help a lot. Remember, the key to a successful boiler installation lies in choosing the right boiler for your needs, preparing the space, and relying on professional expertise. With this guide, we hope you feel more informed about what happens during a boiler installation and why it’s an important investment for your home.

At Eric Collier, we’re always here to provide insights and advice on home heating solutions. If you have any questions or need assistance with your heating needs, feel free to reach out to us.

Switching to eco-friendly heating is a great idea, with the option of helping to contribute to decreasing energy consumption locally as well as nationally. Furthermore, you are contributing to a renewable and reliable energy source. Making the switch could involve investing in high-efficiency heating systems, using renewable energy sources like solar panels or simply improving the insulation in your home, making these moves can contribute to a huge impact on the environment.

By making the switch, you will not only be reducing your carbon footprint, but you will also be saving a lot of money in the long run, with no need for constant bills or repair issues.

What is an eco-friendly heating system?

An eco-friendly heating system is a heating system that is designed to reduce the impact on the environment by alternating energy sources into being renewable, reducing energy consumption and producing fewer greenhouse gases. The changes aim to dispense warmth and comfort while making sustainability a high priority. Some of the most common eco-friendly heating systems are.

Solar Heating

Solar heating is a type of renewable source that conducts energy from the sun, generating heat and electricity for homes and commercial areas. Thi creates amazing warmth and a pleasant environment to be in during harsh and cold weather conditions.

Geothermal Heating

Geothermal heating is a way of generating energy from underneath the earth’s surface, heating homes through a heat pump system. This is also seen as a lucrative option as it can add value to your home, so you will profit financially when you come to selling your home in the future.

Hydronic Heating Systems

Hydronic Heating systems use water or other types of liquids in a way that transfers heat, which is often transferred through radiant floor heating or baseboard radiators.

Why should I make the switch to eco-friendly heating?

Making the switch to eco-friendly heating is a positive switch that contributes to environmental sustainability, cost-effectiveness and personal well-being. By choosing to alternate your traditional heating system with an eco-friendly system, such as solar, geothermal, or biomass, you instantly decline your carbon footprint, helping to increase the positive impact of climate change.

As well as positively impacting the environment, you will be investing in highly efficient and reliable energy sources that translate to long-term savings on energy bill costs, which help to further invest in more renewable sources.

The costs of making the switch

The costs of switching from a traditional heating system to an eco-friendly heating system can vary depending on a series of factors, including the type of system that you choose, the size of your home, and how many you need. Here are some considerations when making the switch.

Initial investment

Although the initial price may seem overwhelming and scary due to its high price value, you can be assured that the long-term costs will work out cheaper than constantly paying your average heating bill.

Home Modifications

Having to adapt your home to a new heating system may come with high costs, like having to install radiant floor heating. The heating system that you install, cheap or expensive, may cause additional costs when having to adjust your home to fit around it, for example, having to install new flooring or amending roof tiles if solar panels damage them.

Energy Efficiency

Eco-friendly heating systems were initially created to be energy-efficient, meaning that we are reducing the waste of non-renewable energy used in the environment. Having high efficiency will mean that less energy is to be wasted in your household, which contributes significantly to lowering your utility bills, giving you the ability to save money in the long-run.

Make the Switch to Eco-Friendly Heating
Top Faults with Commercial Heating

Here at Eric Collier & Son, we understand how frustrating it can be when you discover a fault with your Commercial Heating System, which is why we ensure we will help fix these problems as soon as possible. Heating is an essential part of our workplace, especially in the winter, making it vital to resolve these issues quickly, without disturbing your daily routine as much as possible.

Uncovering the top faults associated with Commercial heating will help you discover the reasoning behind your potential breakdown and how to go about it. Here are some of the most common faults with commercial heating:

Thermostat Issues

A fault that may be found in your commercial heating is through the thermostat, the reading on the thermostat could read very differently from how the environment feels, meaning that there could be either, faulty sensors, wiring issues or the thermostat may be becoming old.

Clogged Or Dirty Filters

An issue that may cause your commercial heating to stop working is having decreased airways due to dirty and clogged filters. The build-up of dirt and debris can prevent air circulation, blocking the heat from getting through to your designated space.

Ignition Failures

One of the most common issues for your commercial heating system is that it struggles to start up, which may be an issue with the ignition system, causing the system to fail. It is also a common factor in this case that the electronic components can be damaged, so it is worth getting this checked out and replaced as soon as possible by a professional heating repair man like Eric Collier.

Improper System Sizing

You may frequently encounter that the commercial space gets significantly warm and then significantly cold, this is a common issue when there has been inaccurate measuring in the initial building layout. The cheaper fix would be to add additional heating elements, rather than redesigning your office or workplace.

Inadequate Insulation

You may experience heat loss within your workplace, and find that you are spending a lot of money for the heat you are receiving, this could be because there is poor insulation in the building, meaning that the heat coming through will not be conducted by your surroundings, therefore leading to increased waste in energy consumption.


Determining when to replace my commercial heating system

Deciding when to replace your commercial heating system is not as straightforward as you think, it includes many considerations such as reliability, efficiency and cost-effectiveness before making your final decision.


Here are a few signs that it may be time to replace your commercial heating system:

Age Of The System

Most commercial heating systems generally have a lifespan of about 15-20 years, so if you find that your system is approaching this age or has passed this age, then it is definitely time to start upgrading to a new system.

Frequent Repairs

If you find yourself having to regularly call for repairs or amend the system yourself, this is a sign that the system may be in the early stages of failing. It will be more cost-effective to purchase a new system due to the fact that repair prices can add up quickly, causing you to waste more money on a system that is at the end of its useful life.

Safety Concerns

If your heating system hints at any signs of any safety risks such as carbon monoxide leaks or common pilot light issues, it is essential to take priority over the safety precautions. To ensure full reassurance that you and your colleagues are not at risk, it is worth disposing of the old heating system and installing a new one.

How often should I schedule maintenance for my commercial heating system?

For peace of mind and for amazing results, it is recommended that you should schedule your maintenance for your commercial heating system for at least once a year. If possible, the maintenance on your heating system should be performed just before the winter season, to ensure that your heating system is in great and upgraded condition, ready to take on the cold winter!

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