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    Serving Lake, Napa, and Mendocino Counties since 1970

    Offering Sales and Service of Heating, Cooling, and Solar Energy Systems.

    Call Us! (888) HEY-JONAS!

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We are your Local HVAC experts!

Jonas offers a wide variety of Energy-Efficient Heating and Cooling systems. Read a little bit more about what we have to offer below...
Ac mini split1

Air Conditioning

Cool your home or business more efficiently this summer! We offer a wide variety of solutions for every cooling need. We are the area's premier Mini-Split A/C system providers. We earned the Mitsubishi Diamond Dealer Award three years in a row, and have been named as a leader in residential sales! We've also earned the American Standard dealer of the year award. You can trust our expertise to bring you a system that works and won't let you down when it gets hot. We service all makes and models, and we sell equipment from industry leaders such as Mitsubishi and Amercian Standard.
Don't forget, a properly engineered AC system will save you money and provide you comfort for many years. When you shop for a new AC system, make sure you purchase from a contractor that will stand behind your system. Not all AC systems are created equal!
Heating room


No one offers as many different options as we do! We've been providing efficient, comfortable heating systems for over 30 years. We sell, service, and install radiant, hydronic, gas/oil/electric furnaces, heat-pump, decorative, passive-solar, and more. We can recommend the right system for your home or business.
There are many variables that can affect the performance and reliability of your heating system. Our experts will be able to help you find a system that fits your needs.
Fresh air

Indoor Air Quality

You would be amazed at the number of alergens and contaminants that can make their way into your home. Do you suffer from allergies or other respiratory issues? Maybe it's time to have our experts evaluate your indoor-air-quality. We employ a variety of methods that can greatly enhance the purity of the air inside your home, as well as enhance your quality of life.
Don't suffer unneccessarily, we can help you live a better life, and breathe easier!
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Efficient Water Heating

Water heating can make up a large portion of your utility bills. That's why it's important to size and engineer your water heating system properly. Our experts will help you select the right system for your home or business so that you will have all the hot water you need for an affordable price. We sell tank, tankless, and boiler/hyrdronic systems too.
We can help you select the right system for your budget. Call us today!

Energy-smart insulation

At Jonas, we provide a complete comfort package for you and your family. As part of this package, you may consider upgrading the insulation in your home. Our advanced blown-in insulation system can save you as much as 30% on your utility bills.

We are here when you need us! Why not contact us today for your Free Estimate

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You can call us directly, e-mail us, plain-old-mail us, or we'll even call you back!

Call us now: (888) HEY-JONAS

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Send Mail Correspondence to:

Jonas Energy Solutions

PO Box 277

Lower Lake, CA 95457


Visit our Showroom:

Jonas Energy Solutions

9125 Highway 53
Lower Lake, CA 95457

We'd love to hear your feedback. Please don't hesitate to call us, or use the form below to let us know how we're doing!


Our Promise to you...


We stand behind every service and product we sell.

We have been serving our community for over 40 years, and we have built a reputation that we are very proud of. Our goal is to maintain this reputation and build on it for years to come.

If for any reason you are not satisfied with our work or any product we sell, we will do whatever it takes to make you satisfied, including replacing it with an equal value system or removing your system and refunding 100% of your money.


Please fill out the information below, and we'll set you up for a heating/cooling estimate!

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Please fill out the information below, and we'll set you up for a Solar estimate!

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We're here when you need us!

Please fill out the information below and we'll set up a service call.

We will process your service call during normal business hours. Is this an emergency? Call Us: (888) HEY-JONAS!
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I am interested in a NEW Heating/Cooling System I am interested in a Solar Energy System I need to schedule a Service Call ×

Current Specials


Winter SOLAR Special: Buy a solar system and get a FREE online energy production monitoring system.

Now through March 15th, 2016, we are giving away a FREE Energy Monitoring System with every installed Solar Energy System. The Enphase Energy Envoy system is valued at $500 and will allow you to monitor your Solar Energy Production from anywhere in the world via the internet.

Call today for your free solar energy consultation and estimate. You have nothing to lose but high energy costs!

Call us today at (707) 994-5911 or click here to request a FREE estimate.


Let us know what you think...

American standard survey

Complete an American Standard Customer Survey.

Thank you for being our customer! If you recently purchased an American Standard heating or cooling system from Jonas, we'd like you to participate in this easy online survey. We want you to be 100% satisfied.

Click here to complete the survey!