The Energy Savings Catalyst

Convergence: The Consolidation of Solar, HVAC, and Conservation Technologies

Lead the Energy Revolution. Transform Your Business. Shape the Future.

In Convergence, Rex Halbeisen—author of the acclaimed Energy Savings Catalyst series—delivers a bold and timely roadmap for the next evolution in the home and small business energy industry. This transformative guide reveals how the traditionally separate worlds of solar installation, HVAC services, and energy conservation are merging into a single, service-driven, high-impact industry: Energy Technology Systems Integration (ETSI).

As energy systems become smarter, more interconnected, and customer-focused, the companies that survive—and thrive—will be those that offer integrated solutions across the Three Pillars of Energy: Conservation, Efficiency, and Generation. Drawing inspiration from the technology sector’s historic transformations, Halbeisen shows why the HVAC industry is uniquely positioned to lead this consolidation, leveraging its culture of ongoing service, multi-technology expertise, and direct customer relationships.

This book explores:

• Why the fusion of solar, HVAC, and conservation isn’t just inevitable—it’s already happening.
• How to restructure your business model around integration, service continuity, and recurring revenue.
• What lessons the HVAC industry can draw from the rise of tech giants like IBM and Apple.
• Step-by-step frameworks and real-world strategies to become an ETSI leader in your market.

Whether you’re a solar installer, HVAC contractor, energy auditor, or entrepreneur, Convergence equips you with the vision and practical tools to stay competitive and redefine your role in a rapidly evolving energy landscape.

It’s not just about technology—it’s about the future of service. Welcome to the age of convergence.