Blog

Does Your AC Need a Surge Protector? (Yes — Here’s Why)

Back To Blog

You protect your TV. What about your AC?

Most people plug their computer and TV into a surge protector without thinking twice. Your air conditioner is one of the most expensive pieces of equipment in your home, yet it often has no surge protection at all.

So should you put a surge protector on your AC? The short answer is yes. Here’s why.

Watch the short video:

Why surge protection matters more now

A few years ago, an AC surge protector wasn’t a big deal. Most contractors didn’t even think about them. Older systems were mostly simple on/off equipment with few sensitive electronics.

That has changed. Today’s inverter systems and other new technology rely on circuit boards to control compressor speed, fan speed, and efficiency. Those boards make modern systems quieter and more efficient, but they are also more vulnerable to power surges.

A single surge can damage a board and leave you without cooling. Replacing a control board can be expensive, especially in the middle of summer.

What an HVAC surge protector does

An HVAC surge protector is a small device installed at your AC equipment. It sits between the power supply and your system. When a voltage spike comes through, it diverts the extra energy away from the sensitive electronics inside your unit.

Power surges can come from lightning, utility grid switching, or large appliances cycling on and off. Many are small and happen without you noticing. Over time, even small surges can wear down electronic components.

Why we install one on every new system

Over the past year or so, supply houses and contractors like us have started recommending surge protectors to help equipment last longer. At Thomson AC, we now install one on every new system.

Already have a system without one? You don’t need to replace anything. We can add a surge protector to your existing equipment during a service visit or tune-up.

Frequently asked questions

Does my AC really need a surge protector?

If you have a newer or inverter system, yes. These systems depend on circuit boards that are sensitive to power surges.

Can I just use a regular plug-in surge protector?

No. Central AC systems are hardwired, so they need an HVAC-rated surge protector installed by a technician.

Can you add one to my existing system?

Yes. If your system doesn’t have one, adding it is an option. We can install it during your next service visit.

Does a surge protector replace regular maintenance?

No. It protects the electronics from power spikes. Your system still needs regular tune-ups to run efficiently.

Protect your investment

A new AC system is a big investment, and a surge protector is a simple way to protect it. If you’re in Huntington Beach or anywhere in Orange County and want to add surge protection to your system, schedule service with Thomson AC.

Call us or text us: (562) 201-3014
Book a visit: thomsonac.com/contact-us

Ready for Comfort You Can Count On?

What To Expect

Clear. Simple. Honest.

what-to-expect_bg
STEP 01

Talk to a Real Person

No phone trees. Just a friendly team member ready to listen and get you scheduled.

STEP 02

We Show Up On Time

Our techs respect your schedule and your home. You’ll get a call when we’re on the way.

STEP 03

Honest, Expert Solutions

We explain the issue, lay out your options, and only recommend what you truly need.

Our Guarantee

What You Can Expect From Thomson

We’ll show you what we found, explain your options in plain English, and get your approval before any work begins.

ourvalues-logo1

Reliable Workmanship

We stand behind our repairs. Every fix, every time.

ourvalues-logos2

Peace of Mind

Guaranteed comfort without the fine print.

Reviews

Real Customers. Real Experiences.

★ ★ ★ ★ ★

It was time to service the fan blower unit and had a pleasant experience again working with Glenn and his trainee George. I appreciated the time Glenn took to ensure George's work met the expectations that Glenn would have performed the job to. It's not often companies have seasoned experienced employees that can share their knowledge and experience with new staff. I hope Thomson keeps Glenn around for many more years!

★ ★ ★ ★ ★

Over the years, we've used Thomson to do major HVAC construction, equipment replacement and service. They are always very thorough, knowledgeable, considerate and the prices are fair. They have a lot of experienced technicians on their team and communicating with the office is easy. We get our system serviced every 6 months (very important) and they actually offer a monthly payment plan for that. I didn't take off a star (because they do offer a fantastic service), but it is difficult if something breaks during the weekend. They won't respond until offices open on Monday. But they will get you in as soon as possible and the service is great.

★ ★ ★ ★ ★

Very honest company and great customer service. It’s been a long time since we had our AC unit inspected and after all these years it’s still good to go and ready for summer! Ethan did a great job answering all my questions. Quick, efficient and very knowledgeable. Thanks Thomson!

★ ★ ★ ★ ★

Ethan was great and was very helpful in helping me understand the unit. He came out the same day I called and had parts on his truck to make the repairs right then and there. Ethan was very friendly and I would recommend him and Thomson Air Conditioning to anyone in the future.

Financing

Easy Financing That Fits Your Budget.

tick-logo

Goodleap Offers Many Options

Goodleap is a company specializing in home improvement financing, offering a wide variety of loan options.
tick-logo

Easy Application

Goodleap offers various repayment options to fit your budget.
tick-logo

Get Started Now

Answer these five questions to find out if you qualify today!
Resources

The Latest

Does Your AC Need a Surge Protector? (Yes — Here’s Why)


Oct 02, 2026

Adding a Second Quilt Head Unit to Your Existing Outdoor Unit


Sep 21, 2026

Why Ductless Mini Splits Are A Smart Choice for Your ADU


Sep 17, 2026

How To Tell if Your SOCAL Home Ductwork Contains Asbestos


Sep 01, 2026

How Much Does It Cost to Replace a Furnace in Orange County in 2026?


Aug 24, 2026

Ductless Mini-Splits For Older Seal Beach Homes Without Adding Ductwork


Aug 11, 2026

Service Areas

Serving Huntington Beach
And Surrounding Areas

Huntington Beach
Newport Beach
Costa Mesa
Newport Coast
Balboa Island
Corona Del Mar
Fountain Valley
Long Beach
Garden Grove
Irvine
Los Alamitos
Rossmoor
Surfside
Seal Beach
service-area-map
Heat Pump Services - Thomson Air Conditioning & Heating
Get in touch

Ready for Honest HVAC Service?
Let's Talk.