Client Reviews and Testimonials
5/5
Oswego, IL
Josiah is honest, reputable, and goes above and beyond to get the job done.
Truly the best!!!
Positives:
Responsiveness, Punctuality, Quality, Professionalism, Value
Services
A/C system maintenance, Heating system repair, A/C system repair, Heating system maintenance

Google Review
5/5
Plainfield, IL
I have only hymns of praises for J3 heating and cooling. Good honest people and very accommodating. 89 degrees in my home in this heat and Josiah was able to make me a priority.
Being in the HVAC industry myself for almost 50 years, now retired, I appreciate a job properly done with all the latest tools for sheet metal and htg & cooling as well!
May I just say I’m A Fan!
Thanks J3 for a job well done!

Google Review
5/5
Aurora, IL
After running into issues with my home warranty company, I decided to just scrap it and replace my AC unit. I set up a time with Josiah for an estimate. He spent the time investigating my issue, diagnosed the problem and created a solution - all in the same trip. He could have just given me a quote on a new unit but instead saved me a lot of money and fixed the problem. He will definitely have my business when the time finally comes to replace it as well any future HVAC needs. I highly recommend J3 Heating and Cooling, excellent work, reasonably priced and very professional.

Google Review

Welcome to J3 Heating and Cooling!
Thanks for considering us for your HVAC project. I’m Josiah, the owner, with over 10 years experience in the HVAC world. In that time I’ve had the privilege of designing and installing systems in a wide range of settings, from charming residential homes dating back to 1800’s, Commercial storefronts, Industrial breakrooms, Mechanics shops, High-rise apartment buildings, and even some wood-shops. If your question involves something that provides ventilation, heat or cooling, we’ve got it covered!
Each place has different quirks that often require a thoughtful approach to ensure the best comfort and aesthetic. Im passionate about finding the perfect HVAC solution for homes and businesses with unique challenges. I enjoy the work itself as much as meeting new clients and guiding their project through from start to finish.

I’m a Christian family man who values integrity and applies the “Golden Rule” to the job (“Treat people the same way you want them to treat you” - Matthew 7:12). This includes the promise to never pressure you into buying products or services you don’t actually need. Instead, we offer you personalized options - ranging from a quick fix, to the complete system overhaul - accompanied by informed recommendations and leave the final decision up to you.
Our photos and customer reviews speak to the sincerity of our work. We look forward to working with you on your next project
Past Projects
These are to set realistic expectations for your project before getting a quote for the following services/products. Pricing includes labor and materials and a minimum of 1yr warranty. These are rough numbers to help you in budgeting for your next home improvement. If you'd like to request a detailed quote, please use the form and we'll respond promptly to schedule an appointment.