Specifications

Version 17
Page 29
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CFM 600 800 1000 12 12 3.5 7 3/4
APD 0.35 LAT 0.58 LAT 0.85 LAT WPD
12x12
GPM 5 BTU 44542 133 51846 124 57659 118 1.01
10 47978 138 56895 130 64294 124 3.64
12 48607 139 57836 131 65550 125 5.11
CFM 600 800 1000 1200 12 18 3.5 7 3/4
APD 0.18 LAT 0.29 LAT 0.42 LAT 0.58 LAT WPD
12x18
GPM 5 BTU 51261 143 60663 134 68257 127 75713 123 1.18
10 54623 148 65897 140 75406 134 83607 129 4.21
12 55219 149 66843 141 76718 135 85292 130 5.91
CFM 1200 1400 1600 1800 12 24 3.5 7 3/4
APD 0.29 LAT 0.37 LAT 0.47 LAT 0.58 LAT WPD
12x24
GPM 5 BTU 85400 130 92166 125 98057 121 103251 118 0.61
10 94795 137 103538 133 111322 129 118316 125 2.15
12 96785 139 106019 134 114295 130 121779 127 3.01
CFM 600 800 1000 1200 16 16 3.5 11 1/2
APD 0.14 LAT 0.22 LAT 0.31 LAT 0.43 LAT WPD
16x16
GPM 5 BTU 53087 146 63004 137 70996 130 78960 125 0.69
10 56720 151 68750 144 78917 137 87691 132 2.47
12 57361 152 69787 145 80375 138 89579 133 3.47
Water to Air Heat Exchangers Specifications
Our Heat Exchangers are High Quality and Built to Last! They are a great fit for a variety of heating and cool-
ing applications. These compact units are designed to maximize heat transfer by utilizing a series of 3/8" copper
tubes with high density aluminum fins. The fins are spaced so that the fin density is 12 fins per inch. This design en-
ables heating loads of 50,000 - 60,000 BTU per square foot (please see performance chart below). Despite such high
fin density, there is minimal flow resistance through these coils. These work great as solar dumps as well! We also
have people using them for cooling and heating in very unique ways. If you’re one of those people that like to design
new things, all we can provide you with are the specifications below, we have no other information.
Good luck with your projects.
Model *Based on boiler temperature 180°F
A B D C
Don’t be Fooled by Price!
We Have the Highest Quality Heat Exchangers at the Best Prices!
There are companies selling similar kinds of heat exchangers at prices lower than ours. We have pur-
chased them to compare them to our quality and there are way too many differences to mention here!
EAT Entering Air Temperature 65° F
EWT Entering Water Temperature 180° F
LAT Leaving Air Temperature
APD Air Pressure Drop: water column
CFM Cubic Feet per Minute
WPD Water Pressure Drop: ft for water (1 psi = 2.31 ft)
GPM Gallons Per Minute
FPI Fins Per Inch
Calculations based on:
3-Rows (2.598”)/3/8” tubing/12 FPI (louvered fin),
1-1/8” OD connections solder
See pg. 3 FAQ’s for
Installation and Sizing Help
Buyers Beware!