What Are the Common Mistakes to Avoid During Water Heater Installation?
- Epsilon 2 Access
- Mar 18
- 3 min read

Installing a water heater may seem straightforward, but small mistakes can lead to big problems. From leaks to inefficiency, even one misstep can result in costly repairs. At Better Water Heaters, we’ve seen it all. That’s why we’re here to help you avoid common pitfalls when setting up your system. If you need water heater installation in Sunnyvale, make sure it’s done right the first time.
Why Proper Installation Matters?
A faulty installation can lead to:
● Higher energy bills
● Water damage from leaks
● Shortened lifespan of the unit
● Safety hazards, including gas leaks and scalding
We know you want a reliable and efficient water heater. That’s why avoiding these common mistakes is crucial.
1. Skipping the Permit—A Risk You Don’t Want to Take
Some homeowners try to cut corners by installing a water heater without a permit. Bad idea.
● Most cities require permits to ensure the installation meets safety codes.
● Without a permit, you could face fines or trouble when selling your home.
● If something goes wrong, insurance might not cover the damage.
We handle the paperwork for you. We make sure everything is up to code, so you don’t have to worry.
2. Wrong Size? Say Hello to Cold Showers or Wasted Money
Size matters when it comes to water heaters. A unit that’s too small won’t keep up with demand, while an oversized unit will waste energy.
How to Choose the Right Size:
● Consider household size—more people means more hot water needed.
● Think about usage—do you take long showers or run multiple appliances at once?
● Check the first-hour rating (FHR) on the heater—it should match your peak demand.
If you’re unsure, let us help! We’ll find the perfect size for your needs.
3. Ignoring Proper Venting—A Silent But Deadly Mistake
Gas water heaters need proper ventilation to release harmful fumes like carbon monoxide. If the venting isn’t installed correctly, those fumes can leak into your home.
Signs of bad venting include:
● A yellow flame instead of blue
● Soot buildup around the heater
● A burning smell or headaches after using hot water
To keep your family safe, always let a professional handle the venting. We ensure your system meets safety standards.
4. Loose Connections? That’s a Recipe for Leaks
A simple loose connection can cause major water damage. Common issues include:
● Loose pipe fittings, leading to slow leaks
● Poor soldering on copper pipes
● Incorrect use of Teflon tape on threaded fittings
Before finishing an installation, we check every connection for leaks.
5. Skipping the Expansion Tank—A Costly Oversight
If you have a closed plumbing system, an expansion tank is a must. Why? Because when water heats up, it expands. Without an expansion tank, this extra pressure can:
● Damage your water heater
● Cause pipes to burst
● Reduce the lifespan of your system
We’ll assess your plumbing setup and install an expansion tank if needed. It’s a small investment that protects your entire system.
FAQs
1. Can I install a water heater myself?
While it’s possible, we don’t recommend it. Improper installation can lead to leaks, inefficiency, and safety hazards. Call us to get a professional installation.
2. What’s the best type of water heater?
It depends on your needs! Tankless models are great for energy savings, while traditional tanks work well for large households. We can help you decide.
3. How do I know if my venting is safe?
If you notice a yellow flame, soot buildup, or odd smells, your venting may be faulty. Contact us for an inspection.
Proper water heater installation in Sunnyvale saves you time, money, and stress. At Better Water Heaters, we handle everything from permits to venting, so you don’t have to worry. Need a new water heater? Contact us today for a hassle-free installation!
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