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Undercover in the Attic:

HVAC technician wearing blue DemeTECH mask in attic workspace.

What Getting Electrocuted Taught Me About the HVAC Industry 

When you’re building a company that’s changing the HVAC industry from the inside out, you have to stay grounded in the work. So I did something most people in my position wouldn’t: I took a job as an HVAC apprentice to a 40-year veteran.

Not because I needed a paycheck—but because I was evaluating his business. I wanted to see how he operated in the field, how he trained, and whether there was a fit for Shelter Air to acquire or collaborate.

You could call it my Undercover Boss moment—except there were no camera crews and no reveal. Just me, in the attic, doing the work.

Removed ductboard system and blower unit near work van at HVAC retrofit jobsite in Beacon, NY.
Dismantled ductboard trunk line and blower unit at a Beacon, NY jobsite. Materials removed to make way for a properly sealed, upgraded system.

How It Started: “Hire Me”

We met at a technical training class. Months later, he called looking for a helper—someone to assist with a difficult attic system install. I referred a couple of capable techs to him, but he said they “wanted too much money.”

So I had a bright idea: “Hire me.”

 

He laughed. Said he was old-fashioned and didn’t think I could handle the work. I told him I’m a volunteer firefighter. I’ve carried a SCBA, worked in turnout gear, and I’m a lot stronger than I look.

Eventually, he agreed. He worked around my schedule, and we started at 7:30 AM.

 

Day One: The Shock

It was a cool, misty spring morning. We were outside replacing a condenser. I checked the panel—there were two breakers labeled AC. I said, “Let’s turn off both to be safe.” He replied, “No, just the top one.”

I tested the line with a meter and told him it still looked live. He brushed it off: “That’s just residual electric.”

It wasn’t.

I went to remove the disconnect box, my arm brushed a wire, and I got shocked. I have the burn on my wrist to prove it.

I sat down on the condenser, caught my breath, and got back to work. That was the first hour of day one.

We spent the rest of the day ripping out the old duct system, which was made of duct board.

 

 

Day Two: No Mastic, No Evaluation

When I arrived the next day, the new ductwork was already in the attic. “How’d you get it up here?” I asked.

 

“The homeowner helped,” he said.

 

We spent the day assembling the system. No mastic. No duct sealing. No pressure testing. Just tape, screws, and hope. He connected new trunks to filthy flex runs without checking sizing or airflow.

 

I flagged it. “I don’t do duct cleaning,” he said. In the attic, I pointed out insulation gaps around recessed lights. “I don’t do insulation,” came the reply.

 

That sentence—that mindset—is what’s broken in this industry.

Sheet metal trunk line installed in attic with pink batt insulation and flex duct, located in Beacon, NY.
A newly installed sheet metal trunk line in an attic space in Beacon, NY—notice the unsealed seams and exposed flex duct.
Sealed flex duct system over attic insulation with branch lines extending to rooms.
A sealed duct system with flex duct branches laid out over batt insulation in an attic in Beacon, NY. Proper sealing and placement are critical for efficiency and comfort.
Technician’s Red Wing boots and HVAC tools on plywood attic floor beside air handler.
Field-level view of an attic jobsite in Beacon, NY, featuring Red Wing boots, a cordless drill with step bit, and installation tools—ready for real HVAC work.

Day Three: The Blame Game

It was a ten-hour day. I showed up early, ready to work. But he did most of it himself. When things went wrong? He blamed me.

 

He grumbled that he was trying to teach and that’s why he was making mistakes. Yet I had offered to help every step of the way.

 

“There’s no good help anymore,” he kept repeating. Then he’d flip: “You’re the first helper I’ve had show up with tools.”

 

The truth? He doesn’t have help because he doesn’t allow it.

 


 

A Hoodie, a Rag, and a Culture Problem

At one point, he asked me to grab a rag. “I don’t see one,” I said.

 

“That hoodie! That’s the rag!”

 

“Oh,” I replied, “I thought that was your jacket.”

 

“Did you see me wearing a jacket?” he snapped.

 

Poor communication. No training. Constant frustration. That’s not leadership. That’s burnout.

What I Learned

I picked up useful tricks—like using a pipe cutter to hold back insulation on line sets. I learned how to solder, bleed a hydronic system, and rebuild a hydro coil air handler.

 

And I saw how pride and inflexibility sabotage the process.

 

He replaced a faulty zone valve but didn’t solder it right. I found water pouring across the floor in the basement. He hadn’t noticed.

 

I pulled the shop vac from my truck—because I always have one—and cleaned up the mess.

 

He didn’t acknowledge the mistake. “I’m used to working alone,” he said. “Having you there threw me off.”

 

On day four, he invited me to watch him commission the system. Then said, “But I won’t pay you.”

 

So much for valuing time. So much for collaboration.

Close-up of a hydro coil unit in attic awaiting installation during HVAC system rebuild.
Close-up of a hydro coil air handler being rebuilt during an HVAC system upgrade in Beacon, NY. Proper prep and installation are critical for performance.
Open air handler and tools on attic floor during HVAC install with technician’s gear nearby.
Open air handler and tools on attic floor during HVAC install with technician’s gear nearby.
Close-up of round sheet metal duct fittings used for air distribution in HVAC systems.
A collection of round collars and fittings staged for installation on an HVAC project in Beacon, NY. Proper components are key to balanced airflow.
Close-up of HVAC technician in blue mask working in attic.
Kimberly Sevilla of Shelter Air wearing a DemeTECH mask while working in an attic in Beacon, NY. Protecting health on the job is just as important as getting it done right.

What Shelter Air Is Built To Do

At Shelter Air, we do it differently.

From the beginning, I committed this company to building science. HVAC and home performance go hand-in-hand—we never treat them separately.

We provide:

  • Load calculations and proper duct design

  • Insulation and air sealing assessments

  • Complete system evaluations

  • High-quality installs sealed with mastic

  • Respect-driven team training and development

We also hire women. Because skill, standards, and mindset matter—not gender.

Smiling woman in HVACR beside open air handler in attic space.

Final Word

He didn’t think I could do the work. But he learned otherwise.

I learned a lot, too. Not just about tools or soldering, but about leadership.

 

If you’re burned out, working alone, and blaming everyone else—maybe it’s not your helpers.

 

Maybe it’s how you’re leading.

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