San Antonio Water Heater Repair:

Repair or Replace

Now that you're empowered with information about possible problems you may encounter with your water heater, let's take a look at how to decide whether to invest in San Antonio water heater repair or simply replace your unit.

Often the question of repairing or replacing a water heater comes down to a financial decision.  Does it make sense to spend money on repairing an older less efficient water heater or is it more cost-effective to invest in a newer, more efficient model?

Consider the following factors.  And if you would like to discuss your decision with a Denny Plumbing professional, we would be happy to provide you with an estimate to help you make your decision.  Just give us a call to set up your service appointment.


First, consider the age of the existing water heater.  Most water heaters have a life-span of 8-12 years.  If you live in an area with high mineral content in the water (hard water), the life span will generally be on the shorter end of the range unless you have a water softener in use that removes the corrosive minerals.  The older your unit is, the more likely it will be more efficient to replace your unit rather than repair it.  New models generally are more energy-efficient and will use less energy on an ongoing basis.


A second factor to consider is your household hot water needs.  Have your hot water needs changed since you installed the original water heater?  If you have a considerably higher demand for hot water now, a larger capacity unit might be in your future anyway.  Replacing rather than repairing would make sense.  However, if your unit is fairly new in age and is providing your household with an appropriate amount of hot water, a simple repair might be warranted.

A plumbing remodel can increase your hot

According to Energy Star studies, water heaters are responsible for up to 14% of a home’s electricity bill.  A higher efficiency model could save you money in a short amount of time.   Older water heater models tend to be less efficient than new water heater models.  In addition, the buildup of sediment inside the tank over time further reduces the efficiency of older water heaters.  If your water heater has considerable scale buildup, it may be costing you more in ongoing energy costs than a new unit would.  If this is the case, it is likely advantageous to spend a little more upfront on a new installation and reap the benefits of lower operating costs.


A final consideration in the repair vs. replace decision is the condition of the existing unit.  If your current water heater tank is damaged in any way—rust, dents, etc.—replacing the tank before the unit develops a leak is wise.  According to the Insurance Journal, non-weather-related water damage accounts for 19% of all home insurance claims.  Water heaters are one of the major contributors to this number.  If the water heater appears damaged, it doesn’t make sense to perform water heater repair in San Antonio TX.  It’s best to replace the unit.

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Water Heater Maintenance Tips:  Give Your Unit a Long Life

Few of us want to spend money when we don’t have to.  So how do we keep our water heaters working properly for the longest time possible and avoid the repair/replace dilemma?  These next 4 tips will help prolong the life of your water heater.


This is an easy task to do yourself if you want.  Alternatively, our knowledgeable Denny Plumbing experts can perform the water heater flush and run a check on the unit to make sure everything is performing correctly.  If you want to attempt the flush yourself, simply take a garden hose and attach it to the drain valve.  Position the end of the hose outside through a door or window at ground level.  Turn the valve on and discharge water until the water runs clear.  Turn the valve back to the off position and remove the hose.


This task is also a DIY project as long as you use caution.  Wearing thick gloves while performing this maintenance is recommended.  Place a bucket under the drainpipe attached to the T&P valve.  Pull up slightly on the valve and let a few cups of water run into the bucket.  Release the T&P valve.  It should move back down into place and no additional water should escape.  If the T&P valve is frozen in place with scale buildup or if it does not close completely after testing, you will need to call in experts for San Antonio Water Heater Repair.  The T&P valve is a built-in safety feature of the water heater and must be functional at all times in order to prevent a possible water heater explosion.  See additional information here.


Every year you should inspect the supply lines to the water heater.  If supply lines become brittle, develop cracks, or show bulges, they should be replaced immediately.


The water in the San Antonio area is some of the hardest water in the USA.  In other words, it has a large amount of suspended mineral content.  This mineral content deposits on surfaces, particularly on hot surfaces.  That makes the inside of your water heater a prime target for scale build-up.  This limestone deposit inside the water heater reduces the efficiency, capacity, and even the life of your unit.  A water softener removes the minerals from the water and protects against the need for San Antonio water heater repair.  It also protects the rest of your plumbing system and plumbing fixtures.  You can learn more about water softener installation here.


Adjusting your water heater thermostat slightly up and down during the colder and warmer months can help balance energy efficiency and increased hot water demand due to colder plumbing lines.  In the late fall simply turn the water heater thermostat up to 130°F or 135°F.  Once warmer spring days return, turn the thermostat back down to 120°F. 

NOTE OF CAUTION: Water heater temperatures should never be set above 140°F.  Scalding can occur quickly at temperatures higher than 140°F and result in severe burns.  Reference the table below for more water temperature information.

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We know there’s a lot to think about when it comes to your water heater.  We at Denny Plumbing would be happy to talk through your water heater decisions with you. 


Now, are you ready to get your water heater back in working order?  Call us to schedule your service appointment.  Our staff is ready to help you with water heater repair in San Antonio TX.  We also serve the surrounding Hill Country area.  And check out the Denny Plumbing website for information about other services we offer.

Denny Plumbing Service Areas and Services

Denny Plumbing has two offices.  The main office is located at 33875A I-10 West, Boerne, TX 78006.  We are 15 miles north of The Shops at La Cantera and The Rim shopping areas.  The San Antonio office is located at 7340 Blanco Rd, Ste. 117, San Antonio, 78216.  Denny Plumbing serves Greater San Antonio and the Texas Hill Country.  Our service areas include Alamo Ranch, Balcones Heights, Bergheim, Bexar CountyBoerneBracken, Bulverde, Castle Hills, Camp Bullis, Canyon Lake, Caracol Creek, Center Point, Cibolo, Comfort, De Zavala, The Dominion, Encino Park, Fair Oaks RanchGarden Ridge, Guibeau-Tezel, Helotes, Hill Country Village, Hollywood Park, Kendall County, La Cantera, Leon Springs, Leon Valley, Live Oak, New Braunsfels, Northern Hills, Oak Hills, Olmos Park, Pipe Creek, San Antonio, Schertz, Selma, Shavano Park, Smithson Valley, Sonoma Ranch, Sonterra, Spring Branch, Stone Oak, Summerglen, Terrell Hills, Timberwood Park, University Park, Windcresand more.  

Denny Plumbing is a licensed professional plumbing company offering a full range of plumbing services. Our friendly, knowledgeable plumbers can help you with any plumbing project large or small.  Including:

Learn more about Denny Plumbing here.