When it comes to choosing and installing radiators, many questions can arise. Here are some of the most common FAQs we receive, along with answers to help you make informed decisions.

If you have a question about delivery or returns you will find that on our Delivery & returns page HERE.


Do you have any other colour or size options not shown on the website?

While we may not list all available options on our website, we can often provide additional sizes and colours upon request. Just send us an email with your desired specifications, and we will do our best to accommodate your needs.


How do I convert Watts to BTU’s?

Converting between Watts and BTUs is simple. To convert Watts to BTUs, multiply the number of Watts by 3.412. To convert BTUs to Watts, divide the number of BTUs by 3.412.


How do I size my radiator to ensure it will heat my room effectively?

To ensure that your radiator can effectively heat your room, you will need to determine the heat output required for that space. You can find the heat output listed on our product pages, but you will also need to consider factors such as room dimensions, number of windows, wall material, and ceiling height. Our Radiator Sizing section and Heat Requirement Calculator can help you determine the appropriate size for your radiator.


What does ΔT50ᴼC mean in terms of radiator output?

ΔT50ᴼC refers to the European heat output rating and assumes water entering your radiator system at an average of 75ᴼC, which is the standard temperature of condensing boilers. If you are using a condensing boiler, this rating will accurately reflect your radiator's output. However, if you are using an older boiler, each radiator will provide approximately 26% more heat than stated at ΔT50ᴼC. If you are using a lower temperature system such as a heat pump or solar central heating, the output of your radiators will be significantly reduced.


What effects do different heating systems have on my radiator choice?

If you are using a condensing boiler, biomass boiler, or other modern heating system, you can expect the heat output listed on our product pages to accurately reflect your radiator's output. However, if you are using an older boiler or a lower temperature system, your radiator's output may be affected. For specific advice on this topic, please contact our helpline.


What are my options for heating my radiator?

Our radiators come in three power options: central heating, electric, and dual fuel. Central heating radiators are connected to your hot water tank and will only be warm when your central heating is on. Electric radiators are standalone units that plug into your mains and are heated by an electrical element. Dual fuel radiators are connected to both your central heating system and an electrical element and can be heated by either method.


How do I connect an electric radiator?

Your electric radiator can be connected to your mains in the same way as any other electrical appliance. We recommend having a qualified electrician hard wire your radiator into a fused spur with an on/off switch, especially in bathroom areas.


Will a towel rail heat my bathroom, or do I need another radiator also?

Any radiator, including towel rails, can heat a room effectively as long as it has the appropriate output for that space. While many people believe that a towel rail won't provide enough heat for a bathroom, this is often untrue. However, if you have an older, poorly insulated bathroom or a very large space, you may need a larger radiator or a combination of radiators to effectively heat the room.


Do I need an inhibitor fluid for my system?

While it is possible to install radiators without an inhibitor fluid, we strongly recommend using one. Inhibitor fluids such as Fernox Alphi 11 protect against corrosion


Where should I position my radiators for maximum efficiency?

For larger rooms, it is recommended to install two or more radiators positioned evenly rather than one large radiator. It's also fine to place your radiators under windows or on an outside wall, as in older houses, this is usually the coldest part of the room, and the direct heat of the radiator can balance this draft. In new builds, this cold spot by windows is not an issue, but placing your radiators under windows can be a good way to avoid using up other wall space. If you have full-length curtains, avoid placing your radiators behind them, as they can block the heat. Additionally, try to avoid placing your radiator where it is likely to be obstructed by furniture, such as sofas.


How much space should I leave above and below my radiators?

To ensure optimum efficiency, it's recommended to leave at least 100mm below and 50mm above your radiators. This allows heat to circulate around the room properly and can help prevent the build-up of dust and debris behind the radiator.


Do I need an angled, straight, or corner valve for my radiator?

The type of valve you need for your radiator depends on the location of the pipes. A straight valve is usually fitted to radiators whose pipes enter the bottom, such as a towel rail. Angled valves are usually fitted to radiators with side entry connections. A corner valve is the perfect option for towel rails, and therefore, they are also known as towel rail valves.


What is the difference between a thermostatic (TRV) radiator valve and a standard radiator valve?

A thermostatic valve or TRV allows you to adjust the heat coming from a radiator. You can adjust the heat from the highest point 5 down to 1. These valves can be particularly useful in areas where temperatures can fluctuate, such as living areas with surplus heat from a fire, kitchens, or conservatories where solar heat gain can be a factor. In fact, we recommend using thermostatic valves everywhere in the house if you don't have individual room stats. They may be a little bulkier and more expensive, but they can reduce energy waste and provide a much more comfortable living environment.


Do you sell radiator covers?

No, we don't sell radiator covers. While they may be popular for their style, many radiator covers or cabinets can severely restrict the amount of heat that a radiator can provide into a room, making your central heating system work overtime to warm your home. This is not good for the environment or your wallet. While some covers are better than others, we believe that a stylish contemporary or traditional radiator is a better option for the same price.


Do you offer trade prices?

We keep our margins low for all our customers and offer trade discounts on bulk purchases. Please contact us at info@theradiatorshop.ie for more information.  


How do I clean my radiator?

To clean your radiator, use mild soap and water and a soft cloth. Avoid using harsh cleaning products or corrosive materials as they can damage the radiator's finish.


How do I bleed a radiator?

If your radiator has hot spots and cold spots, it may need bleeding to remove the air trapped inside. Here are the steps to bleed a radiator:

  1. Turn off the central heating system.
  2. Open both valves at the bottom of the radiator.
  3. Locate the air vent on the top left or right of the radiator and open it using a bleed key or a small screwdriver.
  4. Hold an old rag underneath the vent to catch any water and be careful to protect decorated surfaces from potential water spray.
  5. Slowly open the vent, and you'll hear a hissing sound as the air

For more detailed advice see our Help + Advice Centre post.


How can I tell if my radiator needs to be replaced?

There are several signs that may indicate that your radiator needs to be replaced, such as leaks, rust, or a build-up of debris inside the unit. If you notice that your radiator is not heating up properly, or if you hear unusual noises coming from the unit, these may also be signs that it needs to be replaced. It's best to consult with a professional plumber or heating engineer to assess the condition of your radiator and determine if it needs to be replaced.


How long do radiators typically last?

The lifespan of a radiator can vary depending on a number of factors, including the quality of the unit, how often it is used, and how well it is maintained. In general, however, radiators can last anywhere from 10 to 20 years or more. Regular maintenance, such as bleeding the unit and cleaning it regularly, can help extend the lifespan of your radiator.


How do I balance my radiator system?

Balancing your radiator system involves adjusting the flow of hot water through each radiator to ensure that each room in your home is heated evenly. To balance your system, you will need to adjust the valves on each radiator to limit the flow of hot water to the radiators in the rooms that are already warm, and increase the flow to the radiators in the cooler rooms. This process can be complex, and it's best to consult with a professional plumber or heating engineer to ensure that your system is properly balanced. Please refer to our more detailed post in our Help + Advice Centre


Can radiators be used with renewable energy sources?

Yes, radiators can be used with renewable energy sources such as solar panels, ground source heat pumps, or air source heat pumps. In fact, many modern heating systems are designed to work with renewable energy sources, and using these sources can help reduce your energy bills and carbon footprint.


Can I install a radiator myself?

While it is possible to install a radiator yourself, it's generally not recommended unless you have experience with plumbing and heating systems. Radiator installation requires specialized tools and knowledge, and if not done properly, it can result in leaks or other issues that can be costly to fix. It's best to consult with a professional plumber or heating engineer to ensure that your radiator is installed safely and properly.