Radiator Heat Outputs

Below is a table of radiator heat outputs - the amount of heat given out by various sizes and types of radiator in
kilowatts (kW) and British Thermal Units (BTU).

Type 11 radiators consist of a single panel with a single convector, Type 21 have two panels with one convector
and Type 22 have two panels and two convectors.

 
Width Height
Type 11 kW
Type 11 BTU
Type 21 kW
Type 21 BTU
Type 22 kW
Type 22 BTU
400 300
0.198
678
0.303
1037
0.386
1320
600 300
0.327
1117
0.457
1562
0.518
1769
800 300
0.436
1490
0.61
2083
0.691
2359
1000 300
0.545
1862
0.762
2603
0.864
2949
1200 300
0.644
2200
0.92
3142
1.037
3539
1600 300
0.827
2825
1.26
4302
1.608
5489
2000 300
1.031
3518
1.579
5390
2.014
6875
2400 300
1.245
4251
x
x
2.42
8260
3000 300
1.559
5322
x
x
3.031
10345
   
500 400
0.355
1214
0.485
1658
0.615
2101
600 400
0.426
1456
0.582
1989
0.738
2521
700 400
0.497
1699
0.679
2320
0.861
2941
800 400
0.568
1941
0.777
2654
0.985
3364
900 400
0.639
2183
0.874
2985
1.108
3783
1000 400
0.71
2425
0.971
3316
1.231
4203
1100 400
0.781
2668
0.775
2647
1.354
4623
1200 400
0.852
2910
1.165
3978
1.477
5042
1300 400
0.923
3152
1.263
4312
1.607
5486
1400 400
0.994
3394
1.36
4643
1.724
5885
1600 400
1.137
3882
1.554
5305
1.97
6725
1800 400
1.279
4367
1.75
5971
2.271
7567
   
400 450
0.287
982
0.423
1446
0.544
1859
500 450
0.363
1241
0.534
1825
0.688
2350
600 450
0.439
1501
0.646
2207
0.832
2842
700 450
0.514
1757
0.757
2586
0.974
3326
800 450
0.59
2016
0.868
2965
1.118
3818
900 450
0.665
2272
0.979
3343
1.26
4302
1000 450
0.741
2531
1.091
3725
1.404
4793
1100 450
0.817
2791
1.202
4104
1.547
5281
1200 450
0.892
3046
1.313
4483
1.69
5769
1400 450
1.043
3562
1.535
5240
1.976
6745
1600 450
1.195
4080
1.759
6005
2.263
7724
1800 450
1.346
4595
1.981
6762
2.549
8700
2000 450
1.497
5111
2.203
7520
2.835
9676
2200 450
1.648
5626
x
x
3.122
10655
2400 450
1.799
6141
x
x
3.408
11631
2600 450
1.95
6656
x
x
3.694
12607
2800 450
2.101
7172
x
x
3.98
13583
3000 450
2.253
7690
x
x
4.267
14562
   
400 500
0.328
1121
0.447
1526
0.583
1990
500 500
0.41
1401
0.558
1907
0.717
2447
600 500
0.492
1681
0.67
2289
0.874
2985
700 500
0.574
1961
0.782
2670
1.02
3482
800 500
0.656
2241
0.894
3052
1.166
3980
900 500
0.739
2522
1.006
3433
1.312
4477
1000 500
0.821
2802
1.118
3815
1.457
4974
1100 500
0.903
3082
1.229
4196
1.603
5472
1200 500
0.985
3362
1.341
4578
1.749
5969
1400 500
1.214
4145
1.633
5575
2.067
7053
1600 500
1.388
4739
1.866
6370
2.375
8106
1800 500
1.561
5329
2.1
7168
2.672
9120
2000 500
1.735
5923
x
x
2.969
10133
2400 500
2.082
7107
x
x
2.563
12160
   
400 600
0.405
1384
0.529
1807
0.704
2405
500 600
0.507
1730
0.661
2258
0.881
3007
600 600
0.608
2076
0.794
2710
1.057
3608
700 600
0.709
2422
0.926
3162
1.233
4209
800 600
0.755
2579
1.058
3613
1.409
4810
900 600
0.912
3113
1.191
4065
1.572
5365
1000 600
1.013
3459
1.323
4516
1.762
6013
1100 600
1.115
3805
1.456
4968
1.938
6614
1200 600
1.141
3896
1.588
5420
2.114
7216
1400 600
1.335
4558
1.953
6667
2.503
8543
1600 600
1.529
5220
2.238
7639
2.867
9785
1800 600
1.722
5878
2.52
8601
3.23
11024
2000 600
1.915
6537
2.803
9567
3.592
12259
2200 600
2.109
7199
x
x
3.955
13497
2400 600
2.302
7857
x
x
4.318
14736
2600 600
2.496
8519
x
x
4.68
15971
2800 600
2.689
9178
x
x
5.043
17210
3000 600
2.883
9840
x
x
5.524
18848
   
300 700
0.304
1040
x
x
0.571
1951
400 700
0.417
1426
0.614
2098
0.782
2671
500 700
0.527
1801
0.776
2651
0.93
3174
600 700
0.637
2176
0.938
3203
1.194
4077
700 700
0.746
2548
1.098
3749
1.398
4773
800 700
0.857
2927
1.26
4302
1.604
5476
900 700
0.966
3299
1.42
4848
1.809
6175
1000 700
1.076
3674
1.582
5401
2.015
6878
1100 700
1.186
4050
1.744
5953
2.221
7581
1200 700
1.295
4421
1.905
6503
2.425
8277
1400 700
1.514
5169
2.227
7601
2.836
9679
1600 700
1.735
5923
2.551
8707
3.248
11085
1800 700
1.954
6670
2.873
9806
3.659
12487
2000 700
2.173
7417
3.196
10908
4.069
13886
2200 700
2.392
8164
x
x
4.48
15289
2400 700
2.612
8915
x
x
4.891
16691
2600 700
2.831
9662
x
x
5.302
18093
2800 700
3.051
10413
x
x
5.713
19496
3000 700
3.27
11160
x
x
6.124
20898