5 Steps to a Gravity Flush

Water Heater Installation & Repair In San Antonio

Water Heater Gravity Flush?

Performing a Gravity Flush annually drains built-up sediment and debris within the tank prolonging the efficiency and lifespan of your water heater.

The water heater is out of mind, out of sight until there’s no hot water OR water floods the house. An essential plumbing appliance no less, but one prone to failure without crucial annual maintenance and/or preventive maintenance.

5 Steps To A DIY Gravity Flush

Step 1:  Disconnect water heater from the power source.

  • Gas: Turn shutoff valve OFF                 
  • Electric: Unplug power cord.

Step 2:  Turn Water source OFF

Step 3:  Drain the water.

  • Note: Water may be HOT if water heater has been in use. Allow time to cool.
  • Connect garden hose to the drain valve (drain to yard)
  • Turn drain valve ON
  • Turn T&P valve ON (allows water to drain faster as air escapes)

Step 4:  Refill the tank water.

  • Turn drain valve OFF and disconnect the hose
  • Turn water supply ON
  • Tip: Keep T&P valve open allowing air to escape while filling with water.
  • Turn T&P valve OFF once water drips from valve

Step 5:  Re-connect power source.

  • Gas: Turn shutoff valve ON
  • Electric: Plug power cord

Unsure about prior maintenance done on the water heater? Call (210) 679-6020 to schedule your Water Heater Power Flush today!


***Mention this Blog and receive a COMPLIMENTARY water heater inspection a licensed technician the date of your appointment.***

To keep your water heater working efficiently and extend the life span of the tank from the initial 8-10 years to 15- or even 20-years, we recommend an annual preventive maintenance.

Gas Line Repair San Antonio

Common Water Heater failures are caused by:

  • High water pressure
  • Built-up calcium and sediment
  • Excessive corrosion debris
  • Faulty or Dying heating elements

High Water Pressure (80+ PSI)

Without proper water pressure regulation at the water meter, an increase in water pressure from the city can wreak havoc on a plumbing system, especially the water heater as it’s the first appliance incoming water filters through (aside from the main water lines!).
Water heaters up-to-code have an expansion tank absorbing any increase in pressure, yet tanks that aren’t up-to-code, are at risk of water leaks from pressure escaping through the drain or T&P valves, and possibly even burst!

Water Hardness

No. 5 on the national list of top hard water areas: San Antonio! Hence, calcium deposits on faucets, sinks, shower heads, dishwasher, etc. Clear indicator water lines are likely lined with calcium and sediment deposits, corroding and brittle yielding broken water lines and emergency plumbing.
Homes equipped with a water softener produce plumbing-friendly water, yet if calcium is evident on plumbing fixtures, have your local plumber inspect for repairs or replacement.
No water softener? Prevent damage to plumbing appliances as well as corrosion to the plumbing system upon installation of a water treatment solution. It’s the home investment you’ll enjoy most for years to come.

Power Flush

Clear the sediment and debris from the tank with pressure. A Power Flush goes beyond a “gravity flush” to clear sediment in the water heater; less buildup means less corrosion, a longer life span and continuous hot water for years to come.

Plumbing Emergency San Antonio

Prefer not to wrench around?

Our professionals will inspect your water heater and then Power Flush the tank, emptying out present corrosion, built-up sediment and debris affecting the heating efficiency, and extending the life of your water heater each year of maintenance!

Plumbing San Antonio For Over 50 Years

We Plumb To Please!

J.C. Enriquez Plumbing and Remodeling became known in San Antonio because we provide quality service with highly competitive pricing! As a result of our solid business ethics and high expectations, we have built a reputation of excellence! 

We are dedicated to providing only the highest quality service for plumbing San Antonio.

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