Water heater questions come up a lot in Fort Worth and across the DFW Metroplex — whether you’re dealing with lukewarm showers, a unit that’s pushing 15 years old, or you’re simply trying to decide if tankless is worth the switch. Ernie’s Plumbing has been installing and servicing water heaters for DFW homeowners since 1983, and these are the questions we hear most. Read on for straight answers from our licensed plumbers.
How long does a water heater typically last?
Most traditional tank water heaters last 8–12 years with regular maintenance. Tankless water heaters have a longer lifespan — typically 15–20 years. A few factors affect longevity in DFW homes: Fort Worth and the surrounding area have hard water, which accelerates sediment buildup inside the tank and on heating elements. Flushing your water heater annually and replacing the anode rod every 3–5 years can add years to its life. If your unit is over 10 years old and starting to show problems, replacement is usually the smarter financial move over repairs.
What are the warning signs I need a new water heater?
Watch for these red flags that signal a water heater nearing the end of its life: rusty or discolored hot water (a sign of internal tank corrosion), a rotten egg or metallic smell from the hot tap, rumbling or popping sounds when the unit heats up (caused by sediment buildup), water pooling around the base of the tank, or a unit that’s simply not keeping up with your household’s hot water demand the way it used to. Any one of these warrants a professional inspection — two or more together usually means it’s time to replace. Call Ernie’s Plumbing and we’ll give you an honest assessment.
How much does water heater replacement cost in Fort Worth?
In the Fort Worth area, a standard 40–50 gallon gas water heater installation typically runs $900–$1,500 including parts and labor. Electric water heater installations are often in the $800–$1,300 range. Tankless (on-demand) water heaters cost more upfront — typically $1,500–$3,500 installed depending on the unit and whether gas line upgrades are needed — but they deliver long-term energy savings. Prices vary based on unit size, brand, fuel type, and any needed code upgrades. Ernie’s Plumbing provides upfront, itemized quotes with no surprise charges.
Should I repair or replace my water heater?
A good rule of thumb: if your water heater is under 7 years old and the repair cost is less than half the price of a new unit, repair makes sense. If the unit is 10+ years old, or if the repair cost is more than 50% of replacement cost, replacement is almost always the better investment. Tank corrosion, a cracked heat exchanger, or a failed gas valve on an aging unit are all cases where we’d recommend replacement. Minor fixes — like a faulty thermostat, a bad heating element, or a leaking pressure relief valve — are worth repairing on a younger unit. Our plumbers will walk you through the math before you decide.
What size water heater does my home need?
Tank water heater sizing is based on your household size and peak hot water demand. General guidelines: 1–2 people: 30–40 gallons; 2–3 people: 40–50 gallons; 3–4 people: 50 gallons; 5+ people: 65–80 gallons. For tankless water heaters, sizing is based on flow rate (gallons per minute) and the number of simultaneous hot water draws your home needs. Getting the size wrong means either running out of hot water or paying to heat water you don’t use. Ernie’s Plumbing does a proper load calculation for every installation to make sure you get the right unit for your home.
What are the pros and cons of a tankless water heater?
Tankless water heaters heat water on demand rather than storing and continuously reheating a full tank. The advantages: endless hot water (no “running out”), 20–30% energy savings compared to tank models, longer lifespan (15–20 years), and they take up far less space. The drawbacks: higher upfront cost, potential need for gas line upgrades to handle the higher BTU demand, and limited flow rate if multiple fixtures run simultaneously. For most DFW families, a properly sized tankless unit is a strong long-term investment — especially with Fort Worth’s hard water, which is easier to manage in a tankless system with a proper pre-filter.
How do I know if my pilot light or ignition is the problem?
On gas water heaters with a standing pilot, look through the small viewing window near the burner — if you see no flame, the pilot has gone out. Relighting instructions are typically printed on the front of the unit. If the pilot won’t stay lit after relighting, the thermocouple is likely faulty (a common, inexpensive repair). On newer units with electronic ignition, you may hear repeated clicking without the burner firing — that usually points to an igniter, gas valve, or control board issue. If you smell gas at any point, do not attempt to relight — leave the house and call your gas utility and Ernie’s Plumbing immediately.
Why is my water heater making a popping or rumbling noise?
That banging or rumbling sound is almost always sediment. In DFW, we have hard water — high in calcium and magnesium — and those minerals settle at the bottom of your tank over time. As the heating element or burner fires up, it heats water trapped under the sediment layer, creating steam bubbles that pop through it. Heavy sediment buildup reduces efficiency (your unit works harder to heat the same amount of water), shortens tank life, and can eventually damage the heating element. A professional flush and descaling can resolve the issue in many cases. If the unit is older, replacement may be the better call.
How can I lower my water heating costs in DFW?
A few practical steps make a real difference: Set your water heater thermostat to 120°F (the default 140°F on many units wastes energy and creates a scalding risk). Wrap an older tank unit with an insulating blanket. Fix dripping hot water faucets promptly — even a slow drip adds up. Install low-flow showerheads to reduce hot water consumption. Have your unit professionally flushed annually to remove sediment, which forces the heater to work harder. Finally, if your unit is over 10 years old, upgrading to a high-efficiency tank or tankless model can cut your water heating costs by 20–30% per year.
Do you service both gas and electric water heaters?
Yes. Ernie’s Plumbing installs and services both gas and electric water heaters throughout Fort Worth, Arlington, Dallas, Keller, Mansfield, and the wider DFW Metroplex. We work on all major brands — including Rheem, Bradford White, A.O. Smith, Navien, and Rinnai — for both tank and tankless systems. Whether you need a routine anode rod replacement, a thermostat swap, a full unit installation, or an emergency repair, our licensed technicians carry common parts on their trucks so most jobs are completed in a single visit.
How often should a water heater be serviced?
Annual professional maintenance is the best practice for both tank and tankless water heaters. For tank units, that means flushing out sediment, inspecting the anode rod (replacing if needed), checking the pressure relief valve, and inspecting the burner or heating elements. For tankless units, it means descaling the heat exchanger — especially important in DFW’s hard water environment — and checking the venting and gas connections. A $100–$150 annual tune-up can prevent a $1,200+ emergency replacement and extend the life of your unit by several years. Ernie’s Plumbing offers water heater maintenance service across Fort Worth and surrounding DFW communities.
What brands of water heaters do you install?
Ernie’s Plumbing installs professional-grade water heaters from top brands including Rheem, Bradford White, A.O. Smith, Navien, and Rinnai. We recommend Bradford White and Rheem for traditional tank installations — both are built specifically for plumber installation with longer warranties than big-box store models. For tankless, we frequently install Navien and Rinnai units, which hold up particularly well in DFW’s hard water conditions when paired with a proper water softener or pre-filter. We’ll help you select the right brand and model for your budget, home size, and long-term energy goals.
Need Water Heater Help? Contact Ernie’s Plumbing
Whether you’re dealing with a failing unit, ready to upgrade to tankless, or just have questions, Ernie’s Plumbing is here to help. We’ve been serving Fort Worth, Arlington, Dallas, Keller, Mansfield, and the greater DFW Metroplex since 1983. Call us at (817) 560-4144 to schedule a water heater inspection, get a replacement quote, or request same-day service. Our licensed plumbers provide honest assessments, upfront pricing, and quality workmanship — every time.
Leave a Reply