Integrity Heating, Air and Solar
In Home Consultation,
Installation and Repair

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Northern California's Best Solar Energy Contractors

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Monthly Heating and Cooling Maintenance Done Right With 50+ Years Of Experience

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We Offer Top Brands including Lennox, Bosch, Mitsubishi and More

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"Our Customers are our #1 Priority"

Why Integrity Complete

Founded in 1998 by Darrin and Mona Fellows, Integrity Heating Air & Solar has been a trusted name in HVAC and renewable energy solutions for over two decades. With Darrin's experience dating back to 1972, the Fellows family has built their business on a foundation of exceptional customer service, quality workmanship, and unwavering integrity.

As a family-owned and operated business, Integrity Heating Air & Solar is proud to have their son, Dominic, as an integral part of the team, ensuring that their legacy of excellence continues for generations to come.

Integrity Heating Air & Solar specializes in:

  1. Heating & Air Conditioning - Sales, service, and installation for all major HVAC brands.
  2. Solar Power Solutions - Complete residential and commercial solar system sales, service, and installation, including on-grid and off-grid systems.
  3. Comprehensive Expertise - Working with all manufacturers of HVAC and solar products to provide the best solutions for every need.

Serving Shasta, Tehama, and Siskiyou counties, Integrity Heating Air & Solar is dedicated to helping customers achieve energy efficiency, comfort, and long-term savings. Their commitment to the community and their customers remains their top priority, and they feel truly blessed to serve such an incredible region.

For top-tier service and expert solutions, trust the team with Integrity!

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Customer satisfaction and doing it right the first time is the Integrity way, from start to finish.

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Customer Reviews


Phillip 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.

Cindy Huntington

We have been relying on the expertise of Integrity Heating & Air for approximately 25 years. We have always been very satisfied and completely trust this very honest company to give us the truth about our A/C and heating systems. I highly recommend them.

Gary Woodward

I had a thorny service issue, no AC on one of the hottest days of the summer. Integrity had put in the system and when I needed service they came out very quickly. The tech had a great attitude, spent a lot of time in my attic in the heat of the day and went the extra mile to diagnose and repair the issue, all with a smile on his sweaty face. I can't say enough about how well I was treated by Integrity.

BETTYLOU MOORE

Integrity has taken excellent care of our aging air conditioner for 10 years. This past month gave them a bit of a challenge, for it was just a few days after their seasonal service that a part quit functioning and all we had was fan and no cooling. We got worried and contacted them. They sent someone out the next day to diagnose, and in a few days the needed part was obtained and we had cooling again. We are thankful for the skill and diligence of Integrity personnel.

Jerry Cottengim

We have been clients of Integrity Heating & Air for years. They are prompt, thorough, efficient and tidy. We have a yearly contract that takes care of everything for us at a very acceptable fee.We highly recommend this company and their employees!

Mark Dutton

We recently had Zack (HVAC Tech) perform a PM (preventive maintenance) on our unit... He came to the door to introduce himself (he is not our regular tech) and quickly went to work. He had completed all check points, left us a new filter & took payment all within an hour.


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Serving Shasta and Tehama Counties

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