How To Winterize A Swamp Cooler Top Full Guide 2023

How To Winterize A Swamp Cooler Top Full Guide 2023
  • Paul Kahan

Winterizing swamp coolers are the most important thing to do in winter to keep your family warm. This is what you need How To Winterize A Swamp Cooler. Publican Anker will solve all your worries in one tutorial.

A lack of maintenance is one of the biggest problems that we see in a home warranty company. This can lead to major breakdowns. A winterize your swamp can help you save thousands on repairs and replacements. For more information, please refer to the article.

Why Winterize your Swamp Coolers?

You can think back to seventh-grade science class and remember what happens if water is left standing for too long: mold and mildew are quick to grow.

Corrosion and rust can also be caused by metal and water. We see a lot of corrosion as a result of evaporative failures. You can also get flooding from broken pipes due to freezing temperatures. If your evaporative is not winterized, there are three main problems.

  • Mold and Mildew Growth
  • Rust and Corrosion
  • Broken Water Pipes and Leaks

Winterizing your swamp coolers will be essential if you want your home warranty to cover any repairs or replacements. Your home warranty will not cover if you don’t follow the manufacturer’s instructions.

What You’ll Need

Equipment / Tools

  • Adjustable wrenches or pliers
  • Buckets and sponges
  • Shop vacuum (optional)


  • Optional: Waterproof metal sealer
  • Replacement evaporative pads
  • Cover for evaporative coolers (as required)
  • Insulation board or cardboard

How to Winterize an Evaporative Cooler

How to Winterize an Evaporative Cooler

1. Disconnect the Water Line

Locate the valve controlling the water supply valve to your cooler. Turn the handle clockwise to turn it off. The water line and valve are usually located in an area protected, such as a crawl space under the home. The shutoff valve can be found by following the water line from the point it connects with the cooler.

Next, use an adjustable wrench or pair of pliers to disconnect the water line from the cooler. Also, disconnect the water supply valve from the water line and blow it through to eliminate any water. The water line could freeze if it is left untreated.

You can remove the water line from the area attached to the house or framing members and then coil it up for storage. If it is difficult to disconnect the waterline, drain it and then place it in a warm storage area to keep it from freezing.

2. Drain the Water

To prevent corrosion and damage during winter months, drain all standing water from the cooler’s base. First, take off one or two cabinet sides from the evaporative housing. To absorb as much water from the pan as possible, use a sponge or bucket.


There may be a drain valve at the bottom of your evaporative. However, removing the plug and trying to reseal it can lead to leaks. Sponging the pan helps to remove more water and prevents any leaks in your drain valve seal.

3. Clean the Cooler

The sponge can be used to remove dirt and grime from the cooler’s interior walls. It will make it easier to start next spring by cleaning it now.

You can clean the cooler pan with a shop vacuum if there is too much dirt and mineral buildup.

You can also coat the bottom with a waterproof metal sealing agent after the pan has dried to prevent rusting. You can also wait until spring to seal any leaks.

4. Change the Evaporative Cooler Pads

Before the cooler can be used again in the spring, the evaporative pads must be replaced. You can either do this now or after you have de-winterized the appliance. Some people prefer to change the pads during winterization to be ready for spring when the water supply can be plugged in.

You will need to replace the pads according to the cooler’s design. Refer to the instruction manual for details.

5. Install a Winter Cover

Covering your evaporative cooling unit with a cover will keep it safe from the elements in winter. You will need to measure the size of your evaporative coolers before you can buy a cover that fits comfortably over it without making it completely air conditioning.

It is simple to attach a swamp cover by simply placing it over the cooler cover and then tying it down around the sides and bottom of the cooler. Many cooler covers can be used year after year to protect from rain, snow, sunlight, dirt, and other elements.

The swamp cooler’s vent panels will allow for enough airflow to prevent condensation from damaging the metal and wind lofting, which could cause the cover to blow away.

You can save money by using a tarp as a cover to winterize your swamp. Tie it with rope or bungee strings. It is important not to enclose it too tightly, as this can cause rusty metal parts.

6. Block the Vent

Block the Vent

The air conditioning vent from the cooler that blows into your house can be a source of heat loss during winter, so make sure to seal it.

This is easy:

  • Cut a piece of insulation board that is twice the thickness of the opening.
  • Remove the vent cover from the inside of the house and insert the insulation or cardboard into the opening.
  • Cover it again.

Now your evaporative cooler can be used for winter. You should, however, reverse the process for summer.

Relevant articles for you:


How do you close a swamp cooler for the winter?

Here are some things you should do.

  • Turn it Off – Do not just turn it on.
  • Turn off the water supply or power supply – The first step is to turn off the water valve leading to the evaporative cooler.
  • Drain the tank and clean it – You’ll need to drain the tank.

When should I winterize my swamp cooler?

When the nights fall below 50 degrees and the days drop to the low 70s, it is a good idea to turn off your swamp.

Read on:

How much does it cost to winterize a swamp cooler?

Swamp Cooler Winterization Costs

A swamp can be winterized for $100-150, including all parts. This will allow you to save money on maintenance and prolong the unit’s life. Clean out dirt and sediment.

What happens if you don’t winterize your swamp cooler?

If you don’t winterize the evaporative cooler, there are three main problems: Mold Growth and Rust. Rust and corrosion. Broken Water Pipes and Leaks


Publican Anker offers other articles that can be used to winterize a swamp cooler. You can find more information about air conditioning or cooler on our website. Leave a comment below if you have any questions. The article will be quickly updated to reflect current events.

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