Properly designed and sealed ductwork is essential for efficient HVAC performance and good indoor air quality. MJM Heating & Cooling installs new duct systems and repairs existing ductwork throughout New Jersey.
We identify and fix leaks, damaged ducts, and poor airflow issues to optimize your system’s heating and cooling performance.
From fast repairs to full system installations, MJM Heating & Cooling provides expert air conditioning services across New Jersey. Whether it’s a broken unit in the middle of summer or a new energy-efficient system you need, our veteran-owned team delivers fast, reliable, and affordable solutions built for lasting comfort.
Custom duct design and installation for new or remodeled spaces.
Sealing leaks, fixing damaged sections, and improving airflow.
Cleaning and inspection to prevent contamination.
Insulating ducts for energy savings.
“MJM replaced our outdated AC system and we couldn’t be happier. Their crew showed up on time and worked efficiently. We were back to comfort in less than a day.”
“We’ve used MJM for years and they always deliver. For our seasonal tune-up, they were on time, honest, and didn’t try to upsell us on anything unnecessary.”
“We had other companies try to figure out what was wrong, but MJM got it right on the first visit. Their team is knowledgeable and professional.”
“Very responsive and professional service from start to finish. They worked around our schedule and had the AC blowing cold air the same day.”
Have questions about your air conditioner? You're not alone. Our AC FAQs cover everything from system lifespan and maintenance tips to emergency repairs and financing options—so you can make informed decisions and stay cool with confidence.
Look for uneven temperatures, high energy bills, or visible damage.
Annual inspections are recommended.
Yes, leaks can cause significant energy loss.
Usually 1-3 days depending on project scope.
We provide duct inspection and can recommend cleaning services.
Flexible financing through Wisetack is available.
Our team is here to help—whether it’s routine maintenance, an urgent repair, or a full system install. Contact MJM Heating and Cooling today for fast, friendly, and reliable HVAC service anywhere in New Jersey.
