About Oak Grove Heating & Air Conditioning If you’re looking for heating and cooling services or expertise in Hattiesburg, look no further than Oak Grove Heating & Air Conditioning. We’ve been around since 1978, and our staff is knowledgeable, fully trained and NATE certified on a full range of HVAC products, maintenance and technology – you name it. We do professional, quality work for everything we do so you can enjoy a more comfortable home. After all – When it comes to service, we are hard to beat! Aside from offering excellent service, we also offer a wide range of innovative Lennox® HVAC products. Oak Grove Heating & Air Conditioning is a Dave Lennox Premier Dealer and Dave Lennox Award winner. If you’ve heard the Lennox name before, you probably know about its dedication to creating quality equipment through continuous innovation. This means that when you work with Oak Grove Heating & Air Conditioning you’ll find products that may be more efficient and could even help reduce your utility costs. We even offer SunSource solar powered air conditioners and equipment so you can harness the power of the sun’s energy! Our main goal at Oak Grove Heating & Air Conditioning is to be sure the customer is happy no matter what it takes. We offer 24/7 service so we can be there when you need us most. Oak Grove Heating & Air Conditioning proudly sponsors many charities and events in and around Hattiesburg and we also do work for shelters like the Field House, helping them keep their air on throughout the crazy Hattiesburg seasons! We’re here for your comfort. Whether you need heating and cooling services such as repair and maintenance, or you need to replace your HVAC system, we’re ready to help. Call Oak Grove Heating & Air Conditioning in Hattiesburg at 601-292-9763 to learn more, or schedule an appointment online to start working with us.