The Revive2 400mm x 1800mm P+ Compact Radiator is a double panel, single convector (Type 21) central heating radiator built for a broad heating surface in a slim, space-conscious profile. Its 100mm depth keeps wall projection to a minimum while the wide 1800mm length delivers strong, even heat across the room, making it well suited to placement beneath long windows or along low walls.
Finished in durable powder-coated white, the P+ compact suits domestic and light commercial installations on standard wet central heating systems, including bedrooms, living rooms and dining rooms where a lower, wider radiator fits the available wall space better than a taller unit.
1362W
Heat Output
4648
BTU/h
400mm
Height
1800mm
Length
P+ / Type 21
Configuration
10 Year
Warranty
Please Note
Heat output figures (1362W / 4648 BTU/h) are the BS EN 442 Delta T50 certified standard for a P+ (Type 21) double panel, single convector radiator at 400mm x 1800mm — the harmonised European test condition (mean water temperature 70°C against a 20°C room). Always confirm the exact figure on your order confirmation before final room heat-loss calculations, as coating batch and panel tolerances can cause minor variation between production runs.
Double Panel, Single Convector
P+ (Type 21) construction: two full steel panels with a single convector fin between them, giving higher output than a K1 single-panel radiator without the extra depth of a K2.
Wide, Low Profile
The broad 1800mm length and lower 400mm height suit placement beneath long windows or along low feature walls where a taller radiator wouldn't fit.
Slim 100mm Depth
Keeps wall projection to a minimum, useful where space behind the radiator is limited.
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
400mm
Length
1800mm
Depth
100mm
Performance
Heat output (Watts)
1362W
Heat output (BTU/h)
4648 BTU/h
Test standard
BS EN 442, Delta T50
Maximum operating pressure
10 bar
Construction
Configuration
P+ / Type 21 - double panel, single convector
Range
Revive2 P+ Compact Radiator
Finish
White
Compatibility
Standard wet central heating systems
What's included
Radiator valves
Not included - select compatible valves separately
Warranty
Manufacturer warranty
10 years, subject to manufacturer terms and conditions
Is this a P+ or Type 21 radiator?
Both terms describe the same construction. "P+" and "Type 21" are interchangeable industry names for a double panel, single convector radiator - two full steel panels with one convector fin between them.
What size room will this radiator heat?
At 1362W (4648 BTU/h), this size suits a bedroom, living room or dining room in proportion to its heat loss. 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.
Why choose a wide, low radiator like this?
A wide, lower profile radiator is a practical fit under long windows or along low feature walls where a taller unit wouldn't fit, while still delivering strong overall heat output thanks to the extended length.
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.
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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