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Calculating BTU Consumption for Cisco Meraki Products

British Thermal Units (BTUs) are a unit of measurement used to quantify energy. Specifically, one BTU is the amount of heat required to raise the temperature of one pound of water by one degree Farenheit. 

Network administrators may need the power rating of Cisco Meraki products in BTUs for energy management purposes. All power consumption data for each Cisco Meraki product is listed in Watts on the respective product datasheets.  

 

This article describes how to convert Watts to BTUs for various Cisco Meraki products and provides some BTU/hr values for popular Cisco Meraki products. See MR Power supplies and cost calculations for additional energy usage data.

Watts to BTU/hr Conversion Formula

1 BTU/hr translates to 0.293071 Watts. Similarly, 3.412141633 BTUs/hr = 1 Watt. Using the Watt value found from the data sheet and following the formula (3.412141633 BTU/hr x (Watts) we can quickly find the BTU/hr consumption of any Cisco Meraki device. For example, the MR33 draws a maximum of 11W as specified by the datasheet. 

 

Figure 1. Power consumption from MR33 datasheet.

powersnip.PNG

 

 

 

 

 

Multiplying 11W x 3.412141633 will provide the BTU/hr value of 37.53 BTU/hr. 

Generally, a conversion tool should be used to ensure accurate translation. One such conversion tool can be found here

Device BTU/hr Ratings at Full Load

Note: To calculate total BTU consumption over a specific time period, multiply the BTU/hr value by the number of hours desired. 

MX Series

Device Model Watts @ Full Load BTU/hr
MX60 10 34.12
MX60W 13 44.36
MX64 10 34.12
MX64W 13 44.36
MX65 72 245.67
MX65W 79 269.56
MX80 32 109.19
MX84 32 109.19
MX90 35 119.42
MX100 55 187.67
MX250 190 648.31
MX400 215 733.61
MX450 190 648.31
MX600 226 771.14
     
Z1 18 61.42
Z3 50 170.61

MS Series

Note: MS series switches with PoE capabilities have max power values that are significantly higher due to high PoE load at full capacity. Learn more about PoE support on MS Switches

 

Device Model Watts @ Full Load BTU/hr
MS22 22 75.07
MS22P 465 1586.65
MS42 58 197.90
MS42P 491 1675.36
     
MS120-8 9 30.71
MS120-8LP 88 300.27
MS120-8FP 162 552.77
MS120-24 18 61.42
MS120-24P 250 853.04
MS120-48 36 122.84
MS120-48LP 478 1631.00
MS120-48FP 908 3098.22
     
MS210-24 24 81.89
MS210-24P 448 1528.64
MS210-48 42 143.31
MS210-48LP 490 1671.95
MS210-48FP 882 3009.51
     
MS220-8 10 34.12
MS220-8P 159 542.53
MS220-24 18 61.42
MS220-24P 447 1525.23
MS220-48 51 174.02
MS220-48LP 505 1723.13
MS220-48FP 903 3081.16
     
MS225-24 24 81.89
MS225-24P 448 1528.64
MS225-48 42 143.31
MS225-48LP 490 1671.95
MS225-48FP 882 3009.51
     
MS250-24 27 92.13
MS250-24P 434 1480.87
MS250-48 44 150.13
MS250-48LP 480 1637.83
MS250-48FP 874 2982.21
     
MS320-24 39 133.07
MS320-24P 454 1549.11
MS320-48 55 187.67
MS320-48LP 480 1637.83
MS320-48FP 885 3019.75
     
MS350-24 66 225.20
MS350-24P 466 1590.06
MS350-24X 867 2958.33
MS350-48 63 214.96
MS350-48LP 478 1631.00
MS350-48FP 888 3029.98
     
MS410 50 170.61
MS420 45 153.55
MS425 98 334.39

MR Series

Device Model Watts @ Full Load BTU/hr
OD2 12 40.95
MR12 6.5 22.18
MR16 10.5 35.83
MR18 9.8 33.44
MR24 12.5 42.65
MR26 13.7 46.75
MR30H 25 85.30
MR32 13.87 47.33
MR33 11 37.53
MR34 18 61.42
MR42 20 68.24
MR52 21 71.65
MR53 21 71.65
MR58 8 27.30
MR62 6.5 22.18
MR66 10.5 35.83
MR72 13.87 47.33
MR84 21 71.65

MV Series

Device Model Watts @ Full Load BTU/hr
MV21 10.94 37.33
MV71 21.95 74.90
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Last modified
09:29, 28 Sep 2017

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