Standard Heat-Loss Values for Greenhouse Walls1
Wall
Length in ft
Wall Height in ft
2
 4 6
 8
 10
 12
 14
Wall Loss in MBtu/hr2
5
 		1
 		2
 		2
 		3
 		4
 		5
 		6
10
 		2
 		3
 		5
 		6
 		8
 		10
 		11
20
 		3
 		6
 		9
 		13
 		16
 		19
 		22
30
 		5
 		9
 		14
 		19
 		24
 		29
 		34
40
 		6
 		13
 		19
 		26
 		32
 		38
 		45
50
 		8
 		16
 		24
 		32
 		40
 		48
 		56
60
 		9
 		19
 		28
 		38
 		47
 		58
 		67
70
 		11
 		22
 		33
 		44
 		55
 		67
 		78
80
 		13
 		25
 		38
 		51
 		63
 		77
 		90
90
 		14
 		28
 		43
 		58
 		71
 		86
 		101
100
 		16
 		32
 		47
 		64
 		79
 		96
 		112
200
 		32
 		63
 		95
 		128
 		158
 		192
 		224
300
 		47
 		95
 		142
 		192
 		237
 		288
 		336
400
 		63
 		127
 		190
 		256
 		316
 		384
 		448
500
 		79
 		158
 		237
 		320
 		395
 		480
 		560


1Table adapted from:  Bohanon, H.R., C.E. Rahilly, and J. Stout. 1993. The greenhouse climate control handbook. Form C7S. Muskogee, OK: Acme Eng. and Manufacturing Corp.