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Q - Will Regal Radiators Retro, Decadent and Bathroom Rails be compatible with my heating system?
A - All of our radiators are compatible with the average normal central heating system. All of our radiators have been fully tested and come complete with British standard fitting connections. Because both cast iron and modern steel radiators can run on the same system, you can replace as many of your modern standard steel radiators with cast iron radiators as you wish.
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Q - What is a BTU and how do I calculate the quantity I need for my rooms?
A - BTU stands for British Thermal Unit and it is used to describe the power of heating and cooling systems. Firstly, when estimating the size of a radiator you should decide what  temperature you  require your room to be. The most common ideal centigrade temperatures for specific rooms in your house are displayed in the table below as guide:

Bedrooms - 15°c
Kitchens - 16°c
Stairways/Hall - 18°c
Sitting Rooms/Dining Rooms - 21°c
Bathrooms/WCs - 23°c

The second calculation is for the heat loss from your room. This calculation will take into account many factors i.e. the size of your windows, whether the room is North or South facing, the number of doors etc. 
An easy way to do this is to first calculate the cubic feet (volume) of the room (length times width times height). Then apply the following calculations to specific rooms:

Halls/Stairways/Kitchens - Multiply cubic feet by 3
Bedrooms - Multiply cubic feet by 4
Sitting Rooms/Dining Rooms - Multiply cubic feet by 5
Double glazing - Deduct 10%
North facing room - Add 15%
French windows - Add 20%

You now have the approximate output of any radiator in BTUs (British Thermal Units) for your room. If you want to calculate the exact BTUs it would be best to get this checked by your plumber, but this guide is ample for calculating the sizes of radiator you will require. If you have a large room it is worth considering more than one radiator to minimise the thermal gradient in one room.
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Q - What’s the difference between a cast iron radiator and a steel radiator?
A - Cast iron radiators do take slightly longer to heat up than modern steel, but they also retain heat for much longer than steel after being switched off, thus your room stays warmer for a longer period.

Q - I want to change the colour of my cast iron radiator, what paint should I use?
A - Most modern oil or cellulose based paints can be used on radiators, or you can buy specialist radiator paint.

Q - What pipe sizes fit to Regal Radiators?
A - All our radiators fit standard 1/2 inch pipe work. The diameter of the pipe work you have will be determined by your system. Most connections are 1/2 inch (15mm) or 3/4 inch (22mm). Please consult a Plummer for advice and guidance.
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Q - Do I need a plumber to fit them to my system?
A - It is no different to fitting modern panel radiators, however, if in doubt you should seek advice.

Q - What is the difference between thermostatic and manual valves?
A - Thermostatic valves control the radiator temperature via a sensor which senses the air temperature in the room. Once the preset temperature has been reached the valve automatically opens and closes the flow of hot water to the radiator to maintain that temperature. A manual valve does not control the temperature of the radiator regardless of how warm the room is already. If the room gets too hot, you can turn it off easily.

Q - What’s the difference between Watts & BTUs?
A -  They are both measurements of heat output. To convert from Watts to BTU, simply divide by 0.293. To convert BTUs to Watts multiply by 0.293

Q - Are your radiators guaranteed?
A - Yes, they come with a 10 year guarantee against manufacturing defects.
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