Jonasenergy logo 300x130

    Serving Lake, Napa, and Mendocino Counties since 1970

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

    Call Us! (888) HEY-JONAS!

Jonas logo header small screens

Book a Service Call or Estimate

News and Info

News mitsubishi logo

Rebuild Green and save!

A big thanks to Mitsubishi for stepping up in a big way to provide very generous discounts for fire victims. We are passing these manufacturer authorized discounts on to you! If you are a fire victim and looking to rebuild with an extremely energy efficient comfort system, call us today, we can help!

News tax credit

Solar Energy Tax Credits Extended!

Solar Energy Tax Credits previously expiring in 2016 have been extended which allows homeowners to greatly increase the return on their solar investment. Read about the extension here.

We are a Mitsubishi MiniSplit Systems Diamond Dealer!

Jonas has won the Mitsubishi Diamond Dealer award three years running. If you are looking for a reliable, economical, quality minisplit system, check out a Mitsubishi system from Jonas!

News spca job

Jonas Energy donates new cooling system to Clearlake SPCA.

We've installed a great new AC system for the SPCA of Clearlake. Read about it here.

News amstd logo

We are proud to carry the American Standard Brand for heating & cooling.

American Standard is the most reliable in the industry today for fewer repairs. Don't just take our word for it, check out one of the leading consumer rating magazines for proof. Survey says that they are among the brands with the lowest repair rates for both conventional and heat pump central a/c systems.

Social Media Updates

Testimonials Send us feedback

John did a complete maintenance on my oil fired water heater. I really appreciate the quality of work and professionalism.

-Robert in Kelseyville

Chris came out to do a maintenance on my heat pump today and did a great job! He was a really nice person too!

-Richard in Hidden Valley Lake

"I had the Mitsubishi Minisplit System installed in my home and I could not be happier. It is the most phenomenal machine I have ever had in my house! I have never been cooler during these hot summer days.

-Toni in Hidden Valley Lake

I want to thank you for superb service. When the heat in Lake County rose to triple digits last week, every air conditioning service was swamped. You were too, but the receptionist was so helpful and managed to get Brian out to fix my unit the day after we called. In lake County, that counts as a miracle.

-Carolyn in Santa Rosa

Just wanted to send a note to say that our new Mitsubishi mini-split system was installed today and that we couldn't be happier with the way it all turned out. Great system and a great job by your sales and installation staff. Brian and Jason deserve special recognition for their terrific installation work, very fast and professionally done. Your whole team rocks!

-Dennis and Helen in Clearlake Oaks

In Our Community...

Community blues benefit
Blues Benefit for Valley Fire Rebuild Effort
Join us Saturday, May 21 at the Lake COunty Fire Recovery Blues Benefit #2. This event will be held on the grounds of Ely Stage Stop & Country Museum in Kelseyville from 3:00 to 7:00pm. Lake County Fire Recovery Blues Benefit Info.
Community 4h
Congratulations to our wonderful 4H kids!
You all did a great job at the Lake County Fair this year! We look forward to supporting you again next year. Keep up the great work!

Recent Work We've Done

12 21 2015 1
7 12 2014 5
1 9 2016 2
1 9 2016 1
7 12 2014 1
11 21 2014 4

Great! We'd love to hear from you.

Please let us know how you would like to contact us.

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

Request a Callback

Send us Email

Send us (regular) Mail

Visit us!

Send us feedback


Allrighty! We'll give you a call back at your convenience...


Sure thing, send us an e-mail by filling out this form...


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!

First name is Required Last name is Required

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

First name is Required Last name is Required

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!
First name is Required Last name is Required

Please select one of these options:

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!