Why I Installed a Ditek Zeus Surge Protector on a 10-Ton Rooftop Unit

Surge Protection for Rooftop Units: What You Need to Know

Yesterday, we installed a Ditek Zeus 120/208V surge protector on a 10-ton York rooftop package unit for a commercial customer in Poplar Bluff, Missouri. It may seem like a small detail in the scope of HVAC service, but this type of protection can mean the difference between a fully operational system and thousands in repair or replacement costs.

Why Surge Protection Is Non-Negotiable for Commercial HVAC

Modern HVAC units like this York system include electronic circuit boards and controls that are incredibly sensitive to voltage spikes. One unexpected surge—from a nearby lightning strike, power grid fluctuation, or utility event—can instantly fry the control board.

We often hear customers say, "I didn’t think I needed surge protection until it was too late." This is exactly why we recommend surge protection as part of any comprehensive HVAC service or upgrade.

Why We Chose the Ditek Zeus

The Ditek Zeus is a trusted unit for commercial surge protection. It’s reliable, rugged, and built specifically for protecting 120/208V equipment, like rooftop package units. It offers:

• High surge current capacity

• LED status indicators

• Compact, weather-resistant housing

We selected this model based on the voltage requirements and durability needed for rooftop exposure.

Installation Strategy: Why Location Matters

A common mistake is installing surge protection only at the main electrical panel. While that’s useful, it doesn’t always offer localized protection to specific equipment. In this case, we chose to install the Ditek Zeus near the rooftop unit’s circuit board, not down at the main panel.

Why?

• Closer = Better. The shorter the distance between the surge protector and the equipment, the better it can shunt surges before they reach sensitive components.

• Targeted protection. The goal was to protect the most vulnerable part—the control board—as directly as possible.

This isn’t guesswork. It’s an application of electrical best practices we’ve developed through decades of service.

What This Means for Property Owners

If you operate a commercial building with rooftop HVAC equipment—or any sensitive electrical system—ask yourself:

• Is this equipment protected?

• What would it cost me if a surge wiped it out?

• Has my contractor ever talked to me about localized surge protection?

We believe in helping our clients prevent problems before they start, and that’s what this installation was all about.

Need Help Protecting Your Equipment?

If you're in Poplar Bluff, Doniphan, Harviell, or anywhere in Southeast Missouri and want to talk about safeguarding your electrical or HVAC systems, give Power Plus! a call. We’re always happy to evaluate your setup and recommend the right protection.

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