ABOUT GREENSTONE ENERGY

At Greenstone Energy, we’re more than just a heating and cooling company – we are your partners in creating the perfect environment for your home. With a focus on reliability, energy-efficiency, and thoughtful design, we collaborate closely with architects, builders, and homeowners to ensure that every space in your home offers year-round comfort and enjoyment.

With over 30 years of combined experience in engineering and design, Greenstone Energy offers a bespoke, personalised service that prioritises quality, performance, and professionalism. Our dedicated team works tirelessly to deliver solutions that not only meet but exceed your expectations.

Based in the greater Sydney region, our reach extends nationwide through established partnerships and suppliers, allowing us to serve clients across Australia. Whether you’re embarking on a new construction project or seeking to enhance the comfort of your existing home, Greenstone Energy is here to help you achieve your vision.

Meet Our Founders

Mathew Klintfalt
Mathew KlintfaltFounder
With over 15 years of experience as a chartered mechanical engineer and business owner, Mat brings a wealth of expertise to Greenstone Energy. He is committed to bringing innovative, affordable, and sustainable solutions to a wider audience, and has been a strong advocate for asbestos safety and awareness for many years.
Stuart Williams
Stuart WilliamsFounder
Stu is a seasoned mechanical engineer with more than 15 years of experience in operations, system design, process improvement, and automation. His passion lies in improving the poor energy and thermal performance of Australian homes, making them more efficient, sustainable, and comfortable.

Together, Mat and Stu lead Greenstone Energy with a shared vision to revolutionise residential heating and cooling solutions. Our goal is to ensure that every home is not only comfortable but also environmentally friendly and energy-efficient.

Contact us today to discuss your next project and experience the difference with Greenstone Energy.

OUR PARTNERS