LASTING LEGACY PLUMBING HEATING & AIR
BLOG

How to Protect Your Plumbing from Summer Water Pressure Spikes

June 11, 2025

As temperatures rise in Redlands and across the Inland Empire, your plumbing system can face added stress—especially from sudden water pressure spikes. While high water pressure may not seem like a major issue at first, over time it can damage pipes, wear out fixtures, and even lead to costly leaks.

Here’s how to spot the warning signs and protect your plumbing this summer.

What Causes Water Pressure Spikes in Summer?

Thermal Expansion: As water heats up—especially inside water heaters—it naturally expands. Without a place for that pressure to go, it can strain your system.

Increased Municipal Water Demand: More water use in the summer (think irrigation systems, pools, and cooling) can lead to fluctuations in the city water supply.

Aging Pressure Regulators: If your home’s pressure-reducing valve (PRV) is worn or failing, your plumbing may experience inconsistent or elevated pressure levels.

Signs You May Have Pressure Problems

♦ Loud banging or knocking sounds in your pipes (known as water hamme

♦ Leaking faucets or toilets

♦ Shortened lifespan of hoses or plumbing appliances

♦ Pressure that feels too strong when turning on sinks or showers

How to Protect Your Plumbing

1. Install a Thermal Expansion Tank
This small, affordable add-on gives expanding water a safe place to go—relieving pressure inside your system.

2. Check Your Home’s Water Pressure
You can buy a simple pressure gauge at any hardware store. Ideal pressure is between 40 and 80 PSI. If you’re consistently above that, it’s time for a professional adjustment.

3. Inspect or Replace Your PRV
A licensed plumber can test your pressure-reducing valve and replace it if needed. This device plays a critical role in keeping pressure steady and safe.

4. Insulate Exposed Pipes
Pipes in attics, garages, or outdoor areas are more vulnerable to temperature shifts. Insulating them helps reduce pressure changes and prevents wear.

5. Maintain Your Irrigation System
Sprinkler or drip systems with clogs or leaks can disrupt pressure in the rest of your plumbing. Regular maintenance keeps water flow consistent.

When to Call a Pro

If you’ve noticed any signs of pressure issues—or just want peace of mind heading into the hotter months—our team at Lasting Legacy can inspect your system and recommend the right solutions. From expansion tanks to PRV replacements, we’ll help you stay leak-free and stress-free all summer long.