About Our Team & History – DeLong Plumbing Heating & Air

Our Family Helping

Your Family Since 1991

Who We Are

We’re a family-owned company that’s been serving Springfield, Lebanon, and surrounding areas since 1991. What started as a small business with one truck has grown into a trusted team of plumbers and HVAC technicians—known around town for our yellow trucks, dependable service, and strong values.

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How It All Started

Founded by Garry and Molly DeLong, the company began with a simple mission: treat customers like family and do the job right. That approach still guides everything we do today, more than 30 years later.

Still Family Owned & Operated

Today, the second generation of our family is leading the team—still grounded in those same values. We’re proud to be a part of the Springfield and Lebanon communities and work hard to earn your trust on every service call.

Hire The Yellow Truck Guys

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Phones answered 24/7—real people, not machines

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Uniformed, licensed technicians who show up ready

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Friendly, respectful service in your home or business

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Long-term employees who love what they do

Community Commitment

We support our local schools, youth sports teams, and community events. Being involved in the communities we serve isn’t just something we do—it’s part of who we are.

Certifications & Affiliations

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A+ Better Business Bureau rating

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Member of local Chambers of Commerce

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Licensed and insured in the state of Missouri

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Carrier dealer and Rinnai installation partner

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We are honored to have been voted “Ozarks Best” Plumbing Company & Heating & Air Conditioning Company 9 years in a row.

Our Team

Founded on Trust, Service, & Quality Work

We love what we do, and we believe in it. It’s not just plumbing to us, but a philosophy applied to every area of our lives. It’s just the plumbing that’s made us famous.

Leadership Team

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Office Staff

Plumbing Service

Plumbing Construction/Remodel

Plumbing Estimators and Managers

HVAC Service

HVAC Construction

YOUR LOCAL EXPERTS.

Honest. Affordable. High Quality.

Our mission is to deliver dependable plumbing and HVAC solutions with integrity and transparency. We do what’s best for the customer—every time—and work hard to create long-term relationships built on trust, comfort, and care.