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50+ Years of Heating, Cooling & Solar Solutions — Done with Integrity

🛠️ Full-Service Experts
Heating, air conditioning, solar, solar maintenance & repair, backup power, and home efficiency — we handle it all, start to finish.

☀️ Solar Cleaning, Maintenance & Repair
One of the few companies in the region offering professional solar panel cleaning, maintenance, and repair to keep your system operating at peak performance.

📍 Locally Owned & Operated
Proudly serving Shasta & Tehama counties since 1998.

👷 50+ Years of Experience
Founded by Darrin and Mona Fellows, our business is now a second-generation family-run team. We’re excited that our son Domonic is continuing the amazing service and support for the company.

🔧 All Major Brands Supported
We’re not tied to one product—we recommend what’s right for your home.

💬 Clear Pricing. Honest Advice.
No pushy sales, just expert help and transparent answers to your most important questions.

Solar Maintenance & Repair

Our Services

Looking for reliable comfort and serious energy savings? We’ve got you covered with trusted solutions in heating, cooling, solar, backup power, and smart home upgrades — all backed by local service you can count on.

COOLING

EFFICIENT HOME

HEATING

SOLAR

Serving Shasta and Tehama Counties with Integrity

📞 Need a quote? Want to schedule a free consultation?
Click below or call (530) 365-9100 — our comfort specialists are ready to help.

Schedule an appointment

From Our Customers

T Moore

The technician was Superb. Very efficient and super friendly to. An Awesome Company to choose.

P Pearson

I have dealt with Integrity since the 1990's. We installed two HVAC units on my first house that burnt down in the 2018 Carr Fire. On our rebuild after the fire, we had Integrity do the complete installation of the Heating and Air system as well as a Solar Field. I have NO regrets of dealing with Integrity in either of these systems. Thanks Integrity. Keep up the good work..........

J Drewes

Friendly staff, smart, explained or helped me to understand all aspects of the install and operation of the system.

K clark

He was in and out in a professional manner and did a thorough check for our Air Conditioning . I always call for my tuneups.

B Grant

Very professional and a great value