Our Story
In 1992, Darrin and Mona Fellows moved to Northern California with a passion for doing things the right way. Darrin, already seasoned in the HVAC industry, quickly built a reputation for exceptional work, problem-solving, and customer service. While repairing the home of a businessman in Red Bluff, Darrin’s integrity and skill left a lasting impression — so much so that he was encouraged to open his own business.
After many late nights and careful preparation, Integrity Heating, Air & Solar officially opened its doors.
From the beginning, doing the right thing for every customer has been at the heart of everything we do.
Over the past 27 years, Integrity has weathered changing times and industry challenges, growing stronger through knowledge, hard work, and a remarkable team that we treat like family. Our customers always come first — and educating homeowners to make the best decisions for their unique needs is a cornerstone of our service.
Our Commitment
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Doing it Right the First Time: We believe that quality workmanship and honesty always win.
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Becoming a Friend of the Family: We build relationships, not just service calls.
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Welcoming Every Question: Whether it’s a quick call or an in-home consultation, we encourage all your questions — knowledge builds trust.
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Providing Complete Comfort Solutions: We offer HVAC services, solar installation and service, whole-home generators, backup battery systems, attic insulation, water heaters, and whole-house fans.
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Prioritizing Quality: We specialize in high-efficiency equipment and carefully research all products before recommending them.
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Creating Peace of Mind: Our goal is simple — after investing in your home, we want you to enjoy greater comfort, reliability, and happiness.