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About Schoonmaker Heating & Air Conditioning

Welcome to Schoonmaker Heating & Air Conditioning, where your comfort is our commitment.

Proudly serving San Diego County since 1991, we are a family-owned and operated HVAC company with deep roots in quality craftsmanship, integrity, and dependable service. For over 30 years, we’ve built our reputation on keeping homes and businesses comfortable—no matter the season.

At Schoonmaker HVAC, we do things differently. Our entire team is in-house, so every technician who steps into your home or business is trained, certified, and held to our family’s high standards. We don’t cut corners, and we don’t outsource. What you get is consistent, top-tier service from people who genuinely care.

Whether you’re installing a new system, need a fast repair, or want reliable year-round maintenance, we tailor our approach to fit your space, budget, and comfort goals. With NATE-certified technicians, decades of hands-on experience, and a passion for problem-solving, we’re proud to offer HVAC solutions you can count on—backed by personal service you can feel.

From the coast to the backcountry, we serve all of San Diego County and North County with:

Precision installations
Fast, honest repairs
Preventive maintenance plans
Residential & light commercial HVAC services

When you call Schoonmaker Heating & Air, you’re not just calling a contractor—you’re choosing a team that treats your home like our own.

Integrity. Reliability. Comfort. Every time.

10039 Prospect Avenue
Santee, CA 92071

Phone: (619) 258-4259

Monday - Tuesday: 7:00am - 3:30pm
Wednesday: 7:00am - 5:30pm
Thursday - Friday: 7:00am - 3:30pm
Saturday - Sunday: Closed