Triple Panel Radiators - Type 33 (Three Internal Convectors)

A Type 33 triple panel radiator has three flat panels plus three internal convectors, so it uses convection and extra surface area to give a much higher heat output than single or double panel radiators. You would choose one when you need to heat larger spaces such as living rooms, master bedrooms or commercial rooms. a 700 x 2000mm or a 600 x 1800mm Type 33 will deliver far more warmth than a compact single‑panel in the same room. The trade off is a larger footprint, but many models are designed to look modern rather than clunky.

Look at the BTU output filters included in our range, which run from around 3,000 up to 25,000 BTU. Smaller rooms or bedrooms often need radiators in the 3,000–6,000 BTU band, while open‑plan living rooms and commercial areas usually require 8,000 BTU and above. If you have a large lounge, choose one of the bigger entries such as 600 x 2000mm or 700 x 1800mm that sit in the higher BTU bands. Use your room’s heat loss calculation to pick the closest BTU range and then select a matching radiator size.

Yes, some Type 33 radiators are offered in vertical orientations, our range lists a few vertical or dual‑orientation options among mostly horizontal models. Vertical radiators are especially useful where floor or wall width is tight, a tall 300 x 1000mm or narrow 500 x 1000mm style will give strong output without occupying horizontal wall space. Check the product’s orientation option before ordering so it matches your wall and brackets.

Not necessarily. The collection emphasises modern styling, noting that triple panel radiators need not be large and unsightly. Models branded Compact or Planar K3 aim for a neater appearance while still delivering Type 33 performance. a Compact Type 33 in a mid size such as 600 x 700mm will blend into contemporary décor while giving more heat than a single panel.

Both are Type 33 radiators so they share the triple panel, triple convector performance, but the products in our range show Compact models across many mid and lower price bands and sizes, whereas the Planar K3 appears among larger, higher price items. That suggests Compact models are a versatile, value‑orientated choice for everyday rooms, while Planar K3 suits you if you want a larger, more statement or premium flat‑front design in big spaces. Look at the specific dimensions and price shown for each model to decide which suits your room and budget.