Frequently Asked Questions About Hot Water Heaters
Your water heater works hard every day — often without you noticing — until it doesn’t. Whether your shower suddenly turns cold or you’re considering an upgrade, understanding how your water heater works (and when to call a plumber) can save you time, money, and frustration.
At First Choice Plumbing & Design, we get questions about water heater repair, replacement, and maintenance every single week. Here are the most common ones — and our expert answers.
1. How long do hot water heaters last?
The average traditional tank-style water heater lasts about 8 to 12 years, depending on usage and water quality. Tankless water heaters can last up to 20 years with proper maintenance.
If your system is over 10 years old, showing rust, or not heating efficiently, it’s probably time to plan for a replacement.
2. What are signs my water heater needs repair or replacement?
Watch for these warning signs:
Water takes too long to heat
Rust-colored or cloudy water
Rumbling or banging noises from the tank
Leaking or pooling water near the unit
Fluctuating water temperatures
Higher energy bills
Any of these can indicate sediment buildup, corrosion, or a failing heating element — all of which require professional inspection.
3. Should I repair or replace my water heater?
It depends on age and condition. If your system is under 8 years old and the issue is minor (like a faulty thermostat), repair might make sense.
But if it’s 10+ years old, leaking, or showing multiple issues, replacement is more cost-effective in the long run.
Our team at First Choice Plumbing & Design offers honest assessments to help you decide what’s best for your home and budget.
4. How often should I flush my water heater?
You should flush your water heater at least once a year to remove sediment that collects at the bottom of the tank. Sediment buildup reduces efficiency and can shorten the heater’s lifespan.
If you have hard water, consider flushing every six months and installing a water softener to prevent mineral buildup.
5. What’s the difference between a tankless and a traditional water heater?
Tank-style water heaters store and constantly heat a large volume of water (usually 40–80 gallons).
Tankless water heaters, also known as on-demand systems, heat water only when needed — saving energy and space.
Tankless systems cost more upfront but can lower utility bills and last nearly twice as long.
6. Why is my hot water running out so fast?
If your water turns cold too quickly:
The thermostat may be set too low
Sediment buildup could be reducing capacity
One of the heating elements might have failed
Your household demand has outgrown your tank size
An inspection from a licensed plumber can pinpoint the cause and restore your hot water.
7. How can I make my water heater last longer?
Regular maintenance is key:
Flush the tank yearly
Test the temperature-pressure relief (TPR) valve
Check the anode rod every 2–3 years
Keep the thermostat around 120°F to prevent overheating
At First Choice Plumbing & Design, we offer annual water heater tune-ups to extend your unit’s life and efficiency.
8. What size water heater do I need for my home?
The right size depends on the number of people and how much hot water you use.
2–3 people: 40–50 gallons
4–5 people: 50–60 gallons
6+ people: 60–80 gallons
Tankless models are sized differently, based on flow rate and simultaneous use. Our technicians can help you choose the perfect fit.
9. Can I install my own water heater?
Installing a water heater is not a DIY project — it requires plumbing, electrical, and sometimes gas connections that must meet local building codes. Improper installation can cause leaks, poor performance, or even safety hazards.
Always hire a licensed plumber to ensure a safe, code-compliant installation.
10. How can I lower my energy bills with my water heater?
A few easy changes can make a big difference:
Lower your thermostat to 120°F
Insulate your water heater tank and pipes
Fix leaks and dripping faucets
Upgrade to an ENERGY STAR® water heater or tankless system
Need Expert Water Heater Service?
If your water heater is leaking, inefficient, or just not keeping up, trust the experts at First Choice Plumbing & Design.
We specialize in water heater repair, replacement, and installation throughout Palm Beach County & Broward County — offering fast service, honest pricing, and top-quality workmanship.
