How do you blow out water lines in house?

Answer 1

Blowing out your home's water lines is typically done to winterize the Plumbing and prevent freezing. Here's a basic 8–10 step guide:

Turn off the main water supply to the house.

Open all faucets (inside and outside) to let water drain out.

Flush all toilets and drain appliances like water heaters (if needed).

Connect an air compressor to an outdoor hose bib or laundry faucet using an appropriate adapter.

Set compressor pressure to 50–60 PSI (no more than 80 PSI to avoid pipe damage).

Blow air through the system in short bursts, starting with the highest faucet and working down.

Open each faucet one by one until only air comes out, then close it.

Repeat for outdoor spigots, toilets, and appliances.

Pour RV antifreeze into traps (toilets, sinks, floor drains) if winterizing for freezing temps.

Shut off the air compressor and disconnect it when done.

Important: If you're unsure or your home has complex plumbing, consider hiring a pro. Mistakes can damage fixtures or pipes.

Answer 2

if u have a next door neighbor take a hose from there house hook it up to your outside faucet open up the back hosebib and turn on your front hosebiib and your neighbors also shut off your main water supply too and let it rip.

Answer 3

Undo the pipes leaving each shutoff valve under sinks and toilet, cover with a rag then blow compressed air through from the entry point or whole house shut-off valve. I have had to do this sometimes where a well has put an excess of iron bacteria or rust into the system.