Whether you require Tips and Advice about radiators, plate heat exchangers or heating systems in general AEL have the technical expertise to provide guidance on your system design and which products are best suited to your application.
Should you not find the answer to your problem in our “Tips and Advice” articles and require any help feel free to contact our technical sales office.
Delivery Terms & Conditions
- AEL will contact you during the next working day to discuss a convenient delivery date of your order.
- Orders delivered by road transport are delivered to the nearest convenient hard standing position and the consignee is responsible for offloading.
- Standard delivery is between 9am and 5pm on weekdays only, prices for timed deliveries and weekend deliveries can be provided by our sales office upon request.
- Please note that missed deliveries can be rescheduled and are chargeable.
- We're open 9am to 5pm weekdays with Saturday collections possible by prior arrangement.
- Please note that Cast Iron Radiators are heavy so we advise that you double check the weight of your order and the maximum weight your vehicle can carry as AEL can accept no responsibility for the suitability of your vehicle.
Why is my Radiator Cold
A radiator being cold is the most common problem found in a heating system and is easy to fix. It just means that there is air trapped in your radiator, which stops the hot water from circulating around the radiator effectively. In order to get that air out of the radiator you have to bleed the radiator (remove air). Step 1 Turn off the pump, so you don't end up pushing more air into the radiator system. Step 2 At the top right or top left corner of the radiator you should find a square nut. This can only be turned using a radiator key, which you may have in the house, or which can be bought from a local DIY shop for around £2. Step 3 Put a bucket on the ground under the end of the radiator you're working on. Take the key and turn it about 45-90 degrees anti-clockwise, do not remove the centre nut, you will hear air hissing out followed by dirty water. Step 4 Tightly close the valve, and check it later to ensure there is no leakage.
WHY IS MY RADIATOR COLD AT THE BOTTOM AND WARM AT THE TOP. If the radiator is cold at the bottom and warm at the top and this problem persists, then there may be some sludge at the bottom of the radiator and it may need flushing out. For this, the radiator will need to be taken off the wall, flushed out with water and refitted. This can be done if you follow the correct instructions on how to isolate a radiator and have a basic understanding of how your heating system works. If several of your radiators have this problem and it is not solved by flushing the radiator out then the problem may be more serious. This could be caused by a fault with the circulating pump, blocked pipes or radiators or a badly designed system. You will need to call a professional out to look at this problem further as it may require the whole system to be flushed through or repairs to be carried out.
Finally If after works are completed you find that your radiators are working correctly and are either not hot enough or are too hot then you can alter the temperature by either adjusting the controls on your boiler or for more modern radiators with their own temperature controls, simply turn up or down accordingly.