We've displayed the most appropriate heat output below to adequately heat your room:
Watts:
BTUs:
What are Watts & BTUs?
The heat outputs have been measured at Delta Δ50*.
What is a Delta (Δ) Rating?
*The Delta rating for your chosen heating system as recommended by Building Regulations
Main Features:
BTUS
Δ30: 884 / Δ40: 1243 / Δ50: 1662
WATTS
Δ30: 259 / Δ40: 369 / Δ50: 487
What are Watts & BTUs? What is a Delta (Δ) Rating?
Guarantee: 8 Years
Brackets, Masonry Fixings, Bleed Valve & Blanking Plug Included
Colour: Sparkling Grey
Finish: Silk - Smooth
Heat Source: Central Heated/Hot Water
Terma has teamed up geometric shapes with the Fiona - sqaure meets round. Fiona is the perfect upgrade to a standard ladder rail which you'll find across the market as it has square profile uprights on the left and right and round horizontal bars which are neatly grouped together in sets of 4 with gaps between. This is a superior ladder made to a higher specification. The mounting brackets are located on the rear of the uprights meaning the bars are not disrupted with brackets on them making it harder to hang the towels through. The Sparking Grey colour from Terma has a silk, smooth textured gunmetal type finish and is superior to a chrome plated finish and offers 20% higher heat output in comparison. Fiona can also be fitted as dual fuel - whereby it can run on the central heating in the winter and as electric in the summer. You simply need a Terma heating element and the Terma Integrated Valve with Immersion Tube (no T piece required with this valve) to easily install as dual fuel (660h = 300w, 900h = 400w, 1140h = 600w, 1380h = 600w, 1620h = 800w element) If your pipework comes through the wall Terma suggest fitting 3 Axis Corner Valves for a neat finish where the valves do not protrude forward of thr towel rail and they run in line parallel with the bars at the bottom.
*These electric heating elements must be installed by a registered competent electrician. Any faults developed due to incorrect installation will not be covered under the product warranty. The suggested fuse size is calculated based on a 230V supply and whilst 230V is the nominal voltage given to homes in the UK, the actual voltage supply can vary. The registered competent electrician carrying out the installation will determine the appropriate size of fuse to use for the installation.
Delta (Δ) Ratings Explained
What is a Delta (Δ) Rating?
When discussing heat outputs, the Delta rating is the difference between the temperature of the water inside the heating system and the desired temperature of the room.
What does the value represent?
In simple terms, this value is about heat loss. Heating a room only works, if the radiator output exceeds the heat loss of the room.
We use this calculation to make it easy to choose a radiator that will have a heat output that exceeds the heat loss of the room when connected to your heating system type.
If you don't know the room heat loss, you can use our calculator to find out.
What Delta Rating should I use?
Δ50 = Gas boilers before 2005 / Oil boilers before 2007.
Δ40 = Gas boilers after 2005 / Oil boilers after 2007.
Watts are our main unit of energy/power in the UK, commonly associated with lightbulbs and Home Energy performance certificates (EPCs).
What is a BTU?
BTUs are the unit of measurement used to portray a radiators heat output and a rooms heating requirement. 1 Watt is equal to 3.41 BTUs.
Why are they important?
We buy radiators to heat our homes, right? So, we need a way of knowing if a radiator is powerful enough to heat the room that we are shopping for - Watts and BTUs provide us with a value that makes its easier to compare radiators and ultimately choose the right one for our heating requirement.
Need help figuring out how much heat your room needs?
Our fast and easy-to-use BTU calculator can help you:
Work out a heating requirement value (in BTUs & Watts) for your room
Show you in-stock radiator recommendations that can fulfil this heat requirement
Terma has teamed up geometric shapes with the Fiona - sqaure meets round. Fiona is the perfect upgrade to a standard ladder rail which you'll find across the market as it has square profile uprights on the left and right and round horizontal bars which are neatly grouped together in sets of 4 with gaps between. This is a superior ladder made to a higher specification. The mounting brackets are located on the rear of the uprights meaning the bars are not disrupted with brackets on them making it harder to hang the towels through. The Sparking Grey colour from Terma has a silk, smooth textured gunmetal type finish and is superior to a chrome plated finish and offers 20% higher heat output in comparison. Fiona can also be fitted as dual fuel - whereby it can run on the central heating in the winter and as electric in the summer. You simply need a Terma heating element and the Terma Integrated Valve with Immersion Tube (no T piece required with this valve) to easily install as dual fuel (660h = 300w, 900h = 400w, 1140h = 600w, 1380h = 600w, 1620h = 800w element) If your pipework comes through the wall Terma suggest fitting 3 Axis Corner Valves for a neat finish where the valves do not protrude forward of thr towel rail and they run in line parallel with the bars at the bottom.
*These electric heating elements must be installed by a registered competent electrician. Any faults developed due to incorrect installation will not be covered under the product warranty. The suggested fuse size is calculated based on a 230V supply and whilst 230V is the nominal voltage given to homes in the UK, the actual voltage supply can vary. The registered competent electrician carrying out the installation will determine the appropriate size of fuse to use for the installation.