Voted Best of Lake and Mendocino 2025 Gold:

Air Conditioning/HVAC Service
Home Heating/Propane Company

Comfort. Quality. Expertise.

Stay Comfortable Year-Round with Expert Heating and

Cooling Services

With over 30 years of combined experience, All In Heating & Cooling has built a solid reputation across Mendocino and Lake Counties. From quick system repairs to full-system installations, our team brings honest expertise, reliability, and energy efficiency to every job.

Stay Comfortable Year-Round with Expert Heating and Cooling Services

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Our Services

HVAC Services in Mendocino County & Lake County

We serve homeowners and commercial clients throughout Ukiah, Clearlake, Willits, Fort Bragg, and

beyond.

We Are THE Official Mitsubishi Electric Diamond Contractors in Mendocino and Lake Counties

All In Heating & Cooling is proud to announce our official status as Mitsubishi Electric Diamond Contractors. This certification recognizes our commitment to superior training, proven expertise, and outstanding customer service. As a Diamond Contractor, we offer Mendocino and Lake County homeowners exclusive access to extended warranties and industry-leading Mitsubishi ductless systems, delivering reliable year-round comfort and maximum energy efficiency for your home or business.

Trusted HVAC Experts Serving Mendocino and Lake County

Fast and Reliable HVAC Repairs in Mendocino and Lake County

When your heating or cooling system breaks down, timely service matters. Our locally based HVAC specialists quickly respond throughout Mendocino and Lake County, providing fast repairs that restore comfort to your home or business without delay.

Professional HVAC Installations for Optimal Efficiency

Our experienced technicians install HVAC systems tailored specifically for homes and businesses across Mendocino and Lake County. We ensure each installation delivers peak efficiency and reliable, long-term performance, reducing energy costs and improving indoor comfort.

Transparent Pricing with No Surprises

We offer complimentary estimates on new installations and free second opinions throughout Mendocino and Lake County. At All In Heating & Cooling, you'll always receive honest, upfront pricing—no hidden fees or unexpected charges.

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How Our HVAC Services Work – 3 Easy Steps

Start Your Project Today

Book a Consultation

Reach out to schedule your free in-home estimate. We’ll find a time that works for you and send one of our experienced technicians to assess your space. Whether you’re replacing an old system or planning a brand-new setup, we’ll help you explore the best options for comfort and efficiency—without any pressure.

We Evaluate Your Needs

During your consultation, we’ll take a close look at your current setup, square footage, airflow, and energy needs. Then we’ll walk you through system options that fit your home and budget. You’ll get clear answers and expert guidance to help you make an informed decision.

Professional Installation, Clean and Efficient

Once you choose your new system, we get to work. Our team handles the installation with care and precision, making sure everything runs smoothly and efficiently. We treat your home with respect and leave it as clean as we found it—so all you have to do is sit back and enjoy reliable comfort year-round.

Year-Round Comfort

Ready to Make Your Home More Comfortable in Mendocino or Lake County?

Whether you're planning to upgrade an outdated system or looking to install efficient heating and cooling in a new space, the first step is a quick consultation. No sales pitch. No pressure.

We’ll come out to your property, take a look at your current setup, and give you real, honest feedback based on decades of hands-on experience in places like Ukiah, Willits, Clear Lake, and Redwood Valley.

Learn More About Us

Flexible Financing Options Available

Getting the comfort you need shouldn’t mean putting off the work your home deserves. That’s why All In Heating & Cooling offers flexible financing options for new HVAC installations. Whether you're replacing an outdated system or upgrading to a high-efficiency unit, financing can help you spread out the cost with manageable monthly payments.

• Quick, hassle-free approval process
• Multiple plans available to fit your budget
• Available on both ducted and ductless systems
• No hidden fees—just clear terms and honest rates

Ask us about financing during your free estimate. We’ll walk you through the options and help you find the best fit for your home and your wallet.

APPLY NOW

Our Service Areas

We provide heating, cooling, ducted and ductless system installation, maintenance, and more across Mendocino and Lake County, including:

Ukiah • Redwood Valley • Willits • Clearlake • Fort Bragg • Booneville • Lower Lake

Let’s Create a System That Actually Works for Your Home

This isn’t just about replacing equipment—it’s about making your everyday life easier. If your current setup isn’t cutting it, or if you're ready to upgrade to something more efficient, let’s talk.

You can call us directly or schedule online. We’ll handle the details—you enjoy the comfort.