Here is an idea for your new mining farm setup - go for immersion cooling.

Some obvious benefits:
> 10x more miners at the same building
> fire suppression properties of immersion cooling fluid (Novec 1230 - used in fire fighting systems in data centers)
> get 40% more out of miners for you clients
> Miners will look line new after use in immersion liquid - you can sell used miner with premium when its time to upgrade
> save costs on CAPEX: facility air/water preparation equipment (no fans, no air filtration)
> save costs on OPEX: immersion cooling does not require much electricity for cooling
> quite mining operations, i.e. you can use mining farm building for the needs as well

Please consider this project:

The CoolTank 2.0 immersion module is designed for cooling high-performance ASIC hashing boards. The immersion module CoolTank 2.0 can operate in a closed room or outdoor at temperature conditions up to +55 degrees Celsius. CoolTank 2.0 does not require expensive water chillers, water cooling towers or adiabatic cooling systems.
 
The maximum capacity of the CoolTank 2.0 is 10 pcs. Antminer S19 Pro or WhatsMiner M30S++ (hereinafter - ASICs). User may choose to use ASICs without modification, i.e. keep heatsinks on hashing boards. In this case a user will be able to accommodate 10 ASICs only. This approach will allow a user to re-sell ASICs later in a mint conditions (no dust, no dirt, no burn spots). Alternatively, a user can remove heatsinks from hashing boards to accommodate 20 pcs. ASICs. The CoolTank 2.0 is not locked to Antminer S19 or WhatsMiner M30S++ only.
 
Financial analysis shows 13 months payback period and ROI (3 years) 170% for the CoolTank 2.0 with 10 ASICs.
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Preliminary price for the CoolTank 2.0 will be in the range from $15000 to $20000 (Incoterms DAP – Dubai, UAE).

Features:
98% energy savings on cooling
40% mining profit increase
Preserve ASIC miner new condition for re-sale
2240 TH hashing power (normal use)
896 TH surplus due to overclock

The latter figure 896TH literally means that with CoolTank you can have the hashing power of 8+ units Antminer S19Pro (100TH) or Whatsminer M30S++ (112TH) without even buying it.

Check out "How it works: section of my website: https://www.thecooltank.com

Pre-order here: https://www.thecooltank.com/product-page/cooltank-2-0-immersion-cooling-tank-two-phase-technology