Ductwork installation and repair from Sun Heating & Cooling fixes the part of your HVAC system you never see but feel in every room. Your furnace and air conditioner can only deliver the comfort your ducts carry. When runs are undersized, crushed, disconnected, or leaking into an attic, garage, or wall cavity, you pay to heat and cool air that never reaches the rooms you use.
Since 1982, our team has designed, installed, and repaired residential and commercial duct systems across Bloomfield Hills, Birmingham, West Bloomfield, and the rest of Oakland and Wayne Counties. Many homes here were built before central air was common, so the original ducts were sized for a furnace alone, and decades of remodels have added rooms the system was never planned to reach. We find where your air is going, explain what it will take to fix it, and do the work to last through long Michigan winters and humid summers.
Schedule a ductwork evaluation: call (248) 494-8576
What Ductwork Installation and Repair Covers
Ductwork installation is the design and build-out of new supply and return runs, whether for a home adding central air, a system replacement, an addition, or a finished basement. Ductwork repair restores the system you already have: sealing leaking joints, reconnecting or replacing damaged sections, insulating ducts in unconditioned spaces, and correcting restrictions that choke airflow. We evaluate both options together so the recommendation fits your house, not a one-size answer.
Ductwork service is the right call if:
- Some rooms never get comfortable. Upstairs bedrooms run hot in July and cold in January while the rest of the house is fine.
- You’re replacing your furnace or air conditioner. New equipment needs ducts that can move the airflow it was designed for.
- You’re finishing a basement or building an addition. New living space needs properly sized supply and return air, not a register tapped off the nearest trunk.
- Registers barely blow. Weak airflow at a few vents usually points to a disconnected, crushed, or undersized run.
- Ducts in the attic, garage, or crawl space are damaged. Sagging flex duct, separated joints, and missing insulation waste energy every day.
- The system is noisy. Whistling, banging, or rattling ducts are often a sign of restriction or poor support.
Ductwork Installation Services
New Duct Systems for Homes Without Central Air
Older homes heated by boilers or space heaters can still get forced-air heating and central air. We plan duct routes through closets, attic space, basement ceilings, and existing chases to limit how much plaster or drywall has to be opened, then size each run for the rooms it serves.
Ductwork Replacement With a New Furnace or AC
High-efficiency and variable-speed equipment performs as rated only when the ducts can move enough air. When we handle a heating installation or air conditioning installation, we check whether the existing supply and return ducts are up to the job and recommend changes only where they make a measurable difference.
Additions, Finished Basements, and Remodels
A new family room, primary suite, or finished lower level needs its own supply runs and a path for air to return to the furnace. We extend your system so the new space heats and cools like the rest of the house without starving the rooms that were already comfortable.
Commercial Ductwork
For offices, retail spaces, and other commercial buildings, we install and modify duct systems for tenant buildouts, layout changes, and equipment upgrades. Learn more about our commercial installation services.
Plan your ductwork project with our team: call (248) 494-8576
Ductwork Repair Services
Duct Leak Repair and Sealing
ENERGY STAR reports that in a typical house, about 20 to 30 percent of the air moving through the duct system is lost to leaks, holes, and poorly connected ducts (ENERGY STAR). We seal accessible joints and seams with mastic or foil tape. For leaks hidden inside walls and ceilings, we offer Aeroseal, which seals the system from the inside; see our duct cleaning and Aeroseal page for details.
Disconnected, Crushed, or Damaged Ducts
Flex duct that sags across attic joists, sections knocked loose during other work, and rusted metal near a humid basement floor all cut airflow. We reconnect, re-support, or replace the damaged sections so each room gets its share of air.
Duct Insulation in Unconditioned Spaces
Ducts running through attics, garages, and crawl spaces lose heat in winter and can sweat in summer when cold air passes through them. Sealing and insulating those runs keeps the air at the temperature your system produced. If the attic itself needs work, we also offer home insulation.
Airflow and Balancing Corrections
Some comfort problems come from the original design rather than damage. Adding a return in a closed-off upstairs, resizing a restrictive run, or installing balancing dampers can even out temperatures between floors and reduce strain on the blower.
Get your ducts inspected and repaired: call (248) 494-8576
Signs Your Ductwork Needs Attention
- Uneven temperatures room to room. A cold room over the garage or a hot upstairs often traces back to the duct run feeding it.
- Weak airflow at certain registers. When one vent blows hard and another barely moves, the duct between them and the furnace is likely restricted, leaking, or disconnected.
- Energy bills rising without an equipment problem. Leaks in ducts outside the living space send heated and cooled air where you don’t need it.
- Dust returns soon after cleaning. Leaky return ducts can pull in dust from attics, basements, and wall cavities and spread it through the house.
- Whistling, banging, or rattling. Whistling at registers points to restriction; banging often comes from metal ducts flexing under pressure or loose supports.
- Visible damage or condensation. Crushed flex duct, separated joints, rust, or water dripping from ducts in summer all need attention.
- Furnace or AC problems tied to airflow. Restricted airflow can cause a furnace to overheat and shut down on its safety limit or an AC coil to freeze.
Our Ductwork Process
- Inspect. We look at accessible ductwork, check airflow at the registers, and talk with you about which rooms are uncomfortable and when.
- Explain your options. We walk you through what we found and whether repair, sealing, partial replacement, or a new layout makes sense, and you get the scope and price before work begins.
- Prepare the work area. We protect floors and furnishings and plan access to keep disruption to your home low.
- Install or repair. Joints are sealed, runs are properly supported, and ducts in unconditioned spaces are insulated.
- Verify. We check airflow and system operation after the work and walk you through the results.
Start with a ductwork inspection: call (248) 494-8576
Repair or Replace: What Drives Ductwork Cost
Every duct system is different, so we price ductwork after seeing it. The main factors are:
- Condition and material of the existing ducts. Sound metal trunks with leaky joints can often be sealed; rusted or collapsed sections need replacement.
- Access. Open basement ceilings and attics are simpler than finished ceilings or plaster walls.
- Size of the home and number of runs. More rooms and floors mean more supply and return lines.
- Equipment changes. Pairing duct work with a furnace or AC replacement can change what the ducts need to handle.
- Sealing method. Manual sealing suits accessible leaks; Aeroseal fits systems with leaks hidden behind walls.
Ask about financing options for larger ductwork projects.
Why Bloomfield Hills Homeowners Choose Sun Heating & Cooling
- Local since 1982. Sun Heating & Cooling has served Bloomfield Hills and surrounding communities for more than four decades.
- Ducts and equipment under one roof. The same team that installs furnaces and air conditioners designs and repairs the ducts, so both are planned to work together.
- Cleaning, sealing, and air quality in-house. We also provide duct cleaning, Aeroseal, and indoor air quality solutions, so one company handles the whole air path.
- Residential and commercial. We work on homes, offices, and commercial buildings.
- Available 24/7/365. Our team is here 24 hours a day, 7 days a week, 365 days a year for scheduled and emergency service.
We serve Bloomfield Hills, Bloomfield Township, West Bloomfield, Birmingham, Troy, Novi, Farmington Hills, Livonia, Royal Oak, Rochester Hills, and the rest of our service area.
Ductwork Installation and Repair FAQs
How do I know if my ducts need repair or full replacement?
Most duct systems can be repaired by sealing leaks, reconnecting loose sections, and replacing damaged pieces. Replacement makes sense when the layout cannot deliver enough air, large sections are rusted or collapsed, or new equipment needs larger ducts. We inspect the system before recommending either.
Can ductwork be added to an older home without central air?
Yes, in most cases. We plan routes through closets, attics, basement ceilings, and existing chases to limit opening walls. Older plaster-wall homes often need more planning, and we work through the layout with you before any work starts.
Do I need new ductwork when I replace my furnace or air conditioner?
Not always. We check whether your existing ducts can handle the airflow the new equipment needs. If the return air is undersized, adding a return or resizing a trunk line can matter as much as the equipment itself.
How long does ductwork installation or repair take?
Many repairs and sealing jobs can be completed in a single visit. Larger replacements and new duct systems take longer depending on the size of the home and access to the duct routes. We give you a timeline with your estimate.
What is the difference between duct sealing and Aeroseal?
Manual duct sealing uses mastic or foil tape on joints and seams we can reach. Aeroseal seals leaks from inside the duct system, including ones hidden in walls and ceilings, and shows before-and-after leakage results.
Should I have my ducts cleaned after ductwork repair?
If your existing ducts have heavy dust or debris, or construction has added dust to the system, cleaning after repair is a good idea. We can schedule duct cleaning so the repaired system starts clean.
Is ductwork in my attic or garage a problem?
It can be. Ducts in unconditioned spaces lose heat in winter and can collect condensation in summer if they are not sealed and insulated. Sealing and insulating those runs helps your system deliver the air it produces.
Schedule Ductwork Installation or Repair
If rooms in your home or building never feel right, your ductwork is a good place to start. Call Sun Heating & Cooling at (248) 494-8576 or request an estimate online. Our team is available 24 hours a day, 7 days a week, 365 days a year across Bloomfield Hills and surrounding areas.
Talk to our ductwork team: call (248) 494-8576
