Stop first if
- Someone plans to drain an in-ground pool with high groundwater or after heavy rain.Do not drain. Have a licensed contractor or engineer review groundwater and the relief valve.
- The shell moves while draining.Stop draining if it can be done without risk. Keep everyone away. Call a licensed contractor or engineer.
- Someone wants to blow out lines with shop compressed air.Stop. Leave line purging to a technician with a low-pressure blower.
01
Ask on the call
6Homeowner? These are the questions a good technician will ask you. Having the answers ready makes the first visit count.
- Is the pool open or closed for the season?
- What is the forecast, and how long is the cold spell?
- What happens to circulation if the power goes out?
- Which device handles freeze protection, if any?
- Does the heater sit below pool level?
- Is this an in-ground pool in an area with high groundwater?
02
Bring
5- High-volume low-pressure blower
- Non-toxic pool antifreeze
- Drain plugs and pipe plugs
- Hand tools
- Breathable equipment cover
03
Check on site
5- Note climate, forecast, pool status and which device owns freeze protection.
- In a short mild freeze with reliable power, keep the filter pump running and never rely on the heater.
- Check the controller's air sensor and which circuits it protects.
- With power and gas off, a technician drains every point that traps water.
- At start-up, close drains and circulate until air noises stop before enabling the heater.
04
Keep on the record
5- Forecast and pool status
- Photo of freeze settings
- List of drained points and valve positions
- Photos of any cracked equipment
- Groundwater and relief valve notes before draining
General guidance for a qualified person, not a finding about any home. The person on site decides.