Should I Choose Wet, Dry, or Wet-Dry Layup This Fall?

September 30, 2020

If you are facing seasonal layup of your closed loop or open evaporative cooling system, how do you know if you should choose a dry layup, a wet layup, or a wet-dry layup? It all depends on your specific situation, needs, and preferences.

Will your cooling system be exposed to freezing temperatures?
This would be true for rooftop HVAC systems in a harsh winter climate like Cortec’s headquarter state of Minnesota. If this is the case, you will definitely want to choose dry or wet-dry layup to avoid problems with freezing water.

Are you willing to open your cooling system during layup?
If you are willing, dry layup with the Cooling Tower Frog® is an excellent option for protecting your completely empty system through the use of Vapor phase Corrosion Inhibitors that adsorb on metal surfaces within enclosed void spaces. If you do not want to bother opening the system, a wet-dry layup can be very effective and convenient, either with the Cooling Loop Gator® for open evaporative systems or Closed Loop Toad® for closed loop systems.

Do you live in a moderate climate with occasional hot days in need of air conditioning?
If you are not worried about freezing temps, you may want to leave your system in wet layup so that you don’t have to lose time refilling it when you bring it back online. In this case, the VpCI®-649 Series provides many wet layup options for systems larger than 3,000 gallons (11,356 L). The Cooling Loop Gator® can also be applied to systems smaller than 3,000 gallons, no draining required.

Whichever layup method you choose, just remember that something is better than the usual default of doing nothing! A little easy maintenance now will go a long way to helping your equipment last longer and avoid unnecessary problems with corrosion at startup.

Browse our solutions and contact us today to take your dry, wet, or wet-dry layup to a new level of corrosion protection:

For a PDF version please click here.