Category Archives: Winterization

Pool Winterization Steps For Property Preservation Contractors

Property Preservation Winterization Guide, Reference, Tips And Techniques


An Excerpt From:

Property Preservation Winterization Guide, Reference, Tips And Techniques

by Mr Preservation

Contractors that do not feel qualified to winterize a pool should obtain third party bids to perform this service. The following steps are necessary for proper pool winterization:


HUD Winterization Procedures For Property Preservation Contractors

HUD Winterization Procedures For Property Preservation Contractors

Pool Winterization Step 1: Water Balance

The first step is to make sure the pool water is chemically balanced. Make sure pH, Alkalinity and calcium hardness are in balance.  Adjust levels if necessary. Your water test readings should be as follows:

  • pH 7.2 – 7.6
  • Alkalinity 80 – 120 parts per million
  • Calcium Hardness 175 – 250 parts per million
  • Chlorine 1 – 3 parts per million


Pool Winterization Step 2: Brush Pool

Brush down the floor and sides of your pool and then vacuum the pool of all debris to lessen the chance of staining.

Pool Winterization Step 3: Add Chemicals

Add winterizing chemicals by broadcasting into the deep end of the pool to help protect water quality during the winter months. There are pool winterizing chemical kits that can be purchased. Plenty of information is available online and here are just a couple picked at random:

Arctic Armor Swimming Pool Winterizing Kit

Leslie’s Closing Kits

Pool Winterization Step 4: Clean Filter & Skimmer

Clean the filter, skimmer, and pump basket. Remove all unused chlorine product from Chlorinator. Remember chlorine products can harm you quickly. Do not breath fumes from chlorine.

Cartridge filter elements and D.E. grids should be cleaned and stored. If you have a sand filter, backwash it. has a  nice diagram of a pool filter showing the location of the D.E. Grid.


Pool Winterization Step 5: Lower The Water

Lower the water in the pool below the mouth of the skimmer. You do not want to leave in water in the throat of the skimmer as it can be easily damaged by freezing.

Do not completely drain the pool as this may cause expensive irreparable damage.   

Using an air compressor, blow water out of the system by forcing air down the skimmer and through the plumbing. This is the most critical step in the pool winterization process.

MokeySee has a superb YouTube video showing how to blow out the lines here.


Pool Winterization Step 6: Close Off Lines

Cap off return lines by using threaded plugs.  Use expandable rubber plugs if the return lines are not threaded. Add Pool Anti-freeze by pouring it through the skimmer. Use 1 gallon of Pool Anti-freeze per 10’ of distance from the pump to the pool.


Pool Winterization Step 7: Drain All Peripheral Equipment

Remove all drain plugs from the pump, filter tank, and any other pool equipment. Follow the manufacturer’s instructions for your specific equipment. Place all drain plugs in the pump basket for storage.


Pool Winterization Step 8: Cover The Pool

Place a cover appropriate for winter over the pool surface. Place a cover pump in the center of the pool cover to drain off excess water accumulation. This is very important because too much water on top of the cover can cause the cover to rip or pull the cover and water tubes into the pool.

Mr Preservation’s YouTube site has pool winterization videos.