J.W. Long Mechanical Company offers a complete range of reliable cooling and heating services with a proven expertise that creates lasting performance and peace of mind.

Air Conditioning

When you need service or repair on your home or business air conditioning system, J.W. Long’s skilled technicians have a talent for cutting to the chase and quickly returning things to normal. Need a new system? Our dedicated comfort consultants will personally assess your home or business FREE and design a system that fits your situation and budget. We also provide indoor air quality products and dehumidifying to ensure your comfort on the hottest days.


From electric, gas, and oil furnaces to heat pumps, boilers and hot water heaters, we repair and replace all heating systems. We can make recommendations on the best choice for your home or business environment and we offer FREE consultations. We also offer Energy Star rated heating systems, so you can save up to 30% on heating costs during the winter while staying warm.

Duct Work

J.W. Long Mechanical’s in-house sheet metal shop equips us to swiftly and accurately custom fabricate duct systems for homes and businesses. We keep your residential or commercial project on schedule by doing the job flawlessly the first time. Each duct system is meticulously installed by our well-trained crew to significantly reduce air conditioning and heating bills, enhance equipment capacity and performance, and prevent potentially dangerous indoor air quality problems.


Before the cooling or heating seasons, it’s a good idea to have your system checked out by one of our maintenance experts to nip potential problems in the bud. The J.W. Long team will conduct a thorough inspection and cleaning of your air conditioning and heating system to improve performance and avoid costly breakdowns. For even more peace of mind, we offer annual preventative maintenance plans that keep your equipment operating at peak efficiency and cost savings year round.

Air Quality

Indoor air pollution can actually be worse for you and your family than outdoor pollution. If you want cleaner, healthier indoor air, let the experts at J.W. Long inspect your home’s ventilation and air intake sources. We will evaluate your home’s air intake systems and modify them as necessary to achieve optimal air flow. We’ll also check possible air pollutants within your home, like stoves and heating systems, and make adjustments so that they’re operating at a safe air capacity. When necessary, we can also add air filtration systems to your home to filter possible contagions.

Commercial/Residential Construction

We work closely with contractors to make sure the heating and air conditioning portion of a commercial/residential construction project goes smoothly and achieves maximum energy efficiency. Our comfort consultants do a detailed assessment and make recommendations to plan and install the perfect system for long-term comfort and performance.

Have a question or need service? We’re always available to provide an expert answer or some hands-on help. Call us at (843) 873-0371.