The Revive2 600mm x 1200mm K3 Compact Radiator is a triple panel, triple convector (Type 33) central heating radiator built for maximum heat output from a compact wall footprint. Three steel panels with three full-depth convector fins give this size a rated output of 2867W (9782 BTU/h) at the industry-standard Delta T50 test condition — the highest output configuration in the compact panel range.
Finished in durable powder-coated white (RAL 9016) with factory-fitted top grille and side panels, the K3 compact suits large rooms and spaces with significant heat loss, including open-plan living areas, conservatories and commercial spaces, on standard wet central heating systems. It is supplied complete with wall brackets, an air vent, a blanking plug and fixings.
2867W
Heat Output
9782
BTU/h
600mm
Height
1200mm
Length
K3 / Type 33
Configuration
10 Year
Warranty
Good to Know
Heat output for this size (2867W / 9782 BTU/h) is the industry-standard BS EN 442 Delta T50 certified figure for a K3 (Type 33) triple panel, triple convector radiator at exactly 600mm x 1200mm, confirmed and cross-verified across multiple EN442-certified sources for this size. Always confirm the exact figure on your order confirmation before final room heat-loss calculations.
Triple Panel, Triple Convector
K3 (Type 33) construction: three full steel panels plus three convector fins deliver the highest output in the compact panel range for a given size.
Ideal for Large or Cold Rooms
The extra output makes K3 a strong choice for large or open-plan spaces, conservatories, or rooms with high heat loss where a K2 wouldn't be enough.
Factory-Fitted Top Grille & Side Panels
Integrated top grille and closed end panels give a tidy, finished look straight out of the box and help direct convected heat efficiently into the room.
BS EN 442 Tested
Manufactured and tested to BS EN 442, the harmonised European standard for radiator heat output, pressure and safety performance.
10 Bar Rated
Rated to a maximum operating pressure of 10 bar, giving it headroom for pressurised and unvented central heating systems as well as standard open-vent setups.
10-Year Manufacturer Warranty
Backed by a 10-year warranty against manufacturing defects, giving long-term peace of mind on a radiator built for everyday use.
Dimensions
Height
600mm
Length
1200mm
Depth / Projection from wall
Approx. 158-162mm body depth (186-197mm including brackets)
Performance
Heat output (Watts)
2867W
Heat output (BTU/h)
9782 BTU/h
Test standard
BS EN 442, Delta T50
Maximum operating pressure
10 bar
Construction
Configuration
K3 / Type 33 - triple panel, triple convector
Material
Steel
Finish
Powder-coated white, RAL 9016
Connections
1/2" pipe inlets
What's included
Supplied with
Wall brackets, air vent, blanking plug, screws and wall plugs
Radiator valves
Not included - select compatible valves separately
Warranty
Manufacturer warranty
10 years
Is this a K3 or Type 33 radiator?
Both terms describe the same construction. "K3" and "Type 33" are interchangeable industry names for a triple panel, triple convector radiator - three full steel panels with three convector fins between them, giving the highest output in the compact panel range for a given size, ahead of K2 (Type 22) and P+ (Type 21).
What size room will this radiator heat?
At 2867W (9782 BTU/h), this size suits a large room, open-plan space, or a room with significant heat loss such as a conservatory. Actual suitability depends on room volume, insulation standard, window area and target temperature, so we'd recommend running a proper heat-loss calculation for your specific room before ordering.
How much deeper is a K3 than a K2 or K1 radiator?
K3 radiators are noticeably deeper than K1 or K2 models, typically around 158-162mm in body depth compared to roughly 100mm for a K2, because of the third panel and convector row. This extra depth is the trade-off for the significantly higher output.
Does it come with a valve?
No. Radiator valves are sold separately so you can choose the type that suits your system - manual, thermostatic (TRV), or angled/straight/corner pattern to match your pipework.
Can this be used with a heat pump?
K3 compact radiators can be used on heat pump systems, but because heat pumps run at lower flow temperatures than a gas boiler, the actual heat output will be lower than the BS EN 442 Delta T50 figure quoted here. For heat pump installations, always size radiators against the manufacturer's low-temperature output data (typically Delta T30) rather than the standard Delta T50 rating.
BTU & WATT Calculator
Room Dimensions
Room Type
Living Room
Bedroom
Kitchen
Bathroom
Conservatory
Hallway
Glazing Type
Single Glazed
Double Glazed
Triple Glazed
External Walls
0 Wall
1 Wall
2 Walls
3 Walls
4 Walls
Insulation Level
Poor
Average
Good (New Build)
Required Heating
0
Watts
0
BTUs
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