Cast Iron Radiators from The Period House Store

Cast Iron Radiators have always been cast as individual sections and then joined together. Most of our radiators are delivered fully assembled, however, if over 120cm they will be delivered in 2 parts with an assembly tool. Our assembly guide can be viewed here. This makes moving them, after delivery, much safer and easier. They come in a huge variety of finishes including painted, highlighted and polished as well as antiqued finish. We can colour match all the major paint companies, like Farrow & Ball and Little Greene, so your radiator can match your interior scheme.

Calculating Pipe Centres - The best way is to have your cast iron radiators on site to plumb in, each section is individually cast so there can be slight variations which is why it's best to have them in place to work out your pipe centres. We can give you approximate pipe centres, if required for first fix purposes. As a very general guide, you need to add 140mm to each radiator, this however can vary depending on the valves that you use, so it's always best to check with our office, we are more than happy to help. The bleed valves and touch up paint are supplied in a box within the pallet of cast iron radiators (along with fitting advice).

There are many styles, from the very popular simple Victorian radiators to very ornate castings often seen in townhouses. Cast Iron Radiators are a very effective way to heat your home, they take slightly longer to heat up and when your heating system has been turned off they retain their heat for up to an hour. As standard they come with ½ inch connections which suit almost all traditional valves, if you select a valve that is ¾ inch we supply the ¾ inch bushes, also supplied is a bleed valve which is available in various finishes.

Our staff are very experienced and can help you size up the cast iron radiator you need, to give the correct amount of heat required to heat your rooms. You can either use our BTU Calculator to work out the required heat output or call our office for assistance. Basically, a BTU is a British Thermal Unit in which you need to work out the heat requirement for your room, for example 5000 BTUs. All our cast iron radiators have a BTU figure per section, so if the required output is 5000 BTU and the radiator you like has an output figure of 500 BTUs per section then you would need 10 sections. We then build that for you in the finish you require. Click here to read more on our cast iron radiator ordering guide.

In accordance with BS 7593:2019, boiler inhibitor should be checked annually and recorded as part of your annual central heating boiler service; this ensures your heating system is working at its best. We recommend Fernox products which offer a complete range of inhibitors and associated products.

Cast Iron Radiators FAQs

What are cast iron radiators?

Cast iron radiators are heating devices made from heavy-duty cast iron material, known for their ability to retain and distribute heat efficiently. They are a popular choice for both vintage and modern homes due to their aesthetic appeal and long-lasting performance. Click here to see how our cast iron radiators are built in the UK.

Why choose cast iron radiators over other radiator types?

Cast iron radiators are highly efficient in maintaining warmth for longer periods compared to steel or aluminium radiators. Their ability to retain heat makes them ideal for sustained heating, saving energy and reducing heating costs. They also offer a timeless, classic look that complements traditional and modern decor styles.

Are cast iron radiators energy-efficient?

Yes, cast iron radiators are considered energy-efficient because they retain heat for extended periods, even after the heating system is turned off. This means they can help reduce energy consumption, making them a cost-effective solution for home heating.

How long do cast iron radiators last?

Cast iron radiators are known for their durability and can last for several decades with proper care. Many antique radiators from the early 20th century are still in use today, proving their longevity and reliability.

Do cast iron radiators work with modern heating systems?

Yes, cast iron radiators are compatible with modern heating systems, including gas boilers, electric systems, and even underfloor heating. Their versatility makes them suitable for both traditional and contemporary homes.

How do I size a cast iron radiator for my home?

To size a cast iron radiator correctly, you need to consider the room's dimensions, insulation, and heat requirements. You can calculate the BTU (British Thermal Unit) output needed to efficiently heat your space with out BTU Calculator.

Can cast iron radiators be used in bathrooms?

Yes, cast iron radiators are an excellent choice for bathrooms. Many homeowners opt for cast iron towel radiators, which provide warmth while also functioning as towel warmers. These radiators resist corrosion and maintain heat well, making them ideal for humid environments. However we would recommend not choosing the full polished / hand burnished finish, as this is unlacquered and will tarnish or rust quicker in a high-moisture environment.

Are cast iron radiators expensive?

While cast iron radiators may have a higher upfront cost compared to steel or aluminium radiators, their energy efficiency, durability, and aesthetic value often make them a worthwhile long-term investment.

How do I maintain and clean cast iron radiators?

Cast iron radiators require minimal maintenance. Regular dusting and occasional cleaning with warm water and mild soap will keep them in good condition. Be sure to check for leaks or corrosion, especially if you have antique radiators. Full polished / hand burnished finishes benefit from regular maintenance with WD40 and a lint-free cloth, this will take care of any spot rust and keep them looking highly polished.

Can cast iron radiators be painted?

Yes, cast iron radiators can be painted to match your home's interior decor. It is recommended to use heat-resistant paint to ensure durability. Many people opt for professional services to achieve a smooth, even finish. If you are wanting to paint your radiators yourself, you can choose the Primer finish as it’s made to be painted on (we can also provide spray cans of any RAL colour, please contact our sales office for more details). Have a look at our radiator finishing options page for more information.

How to bleed cast iron radiators?

Radiators come with bleed valves, either already installed or to be installed by your heating engineer (all our cast iron radiators come with bleed valves in a box on the delivery pallet). They are usually located on one of the top bushes of your radiator. You either unscrew the head to bleed the radiators of air, or use a key / flathead screwdriver to bleed your cast iron radiators. This will help raise the water in your radiator, ensuring the whole radiator heats up when you turn on your heating system.

Are cast iron radiators environmentally friendly?

Due to their longevity, recyclability, and energy efficiency, cast iron radiators are considered environmentally friendly. They reduce the need for frequent replacements, thus lowering waste and energy consumption over time.

What valves should I use with cast iron radiators?

If you are wanting to control the temperature of each radiator in your heating system, then we would recommend a TRV (thermostatic radiator valve). If you want your radiators to have a simple on/off function, or you have a smart heating system controlling the temperature, then we would recommend a manual valve. Check out our cast iron radiator valves and accessories here.

Can you use cast iron radiators with a heat pump?

Yes, you can use them with a heat pump. While cast iron radiators can work with heat pumps, they may take longer to reach the desired temperature due to the lower heat output of the pump.

How do you move a cast iron radiator?

If you have just had new radiators delivered to your property, you must ensure adequate manpower is available for moving them inside as the delivery is a palletised delivery, the driver will move the pallet to the nearest hardstanding area. You must make sure that the radiator is moved in the upright position, once it is removed from the pallet, to prevent flexing the seals. The most common method is to support the radiator between the fins by using support bars at each end, as illustrated below. If you have any questions or concerns, please get in touch.

Where can I buy cast iron radiators?

You can purchase cast iron radiators from our website or call our Richmond, North Yorkshire showroom on 01748 821500. Be sure to check our styles, and BTU output to find the best option for your home.