At Green Attic in Chicago, we understand that proper duct sealing is essential for maximizing HVAC efficiency, improving indoor air quality, and lowering energy costs.
Duct Sealing Chicago
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Why spray foam on ductwork?
Duct Sealing / Moisture Thermal Pressure Barrier at 2″ of Closed Cell Spray Foam
Get above and beyond efficiency from your heater when you seal duct work with foam. Ducts are inherently leaky because of joints and gaps and sealing the duct work with spray on duct insulation will help make the insulation as effective as possible.
This means the air you pay to heat must pass through cold ductwork, where it will cool off, forcing your furnace to run longer
This means the air you pay to heat must pass through cold ductwork, where it will cool off, forcing your furnace to run longer
Duct Sealing Delivers Better Temps By Preventing Leaks
Comfortable cozy room with direct heat delivery through sealed ducts
1. A combination of closed cell spray foam and cellulose insulation is the perfect pairing for an unconditioned attic (vented attic).
2. Seal the attic floor and any ductwork with one part spray foam around seams or two part spray foam around duct trunks and delivery lines.
3. Duct sealing can be done with from inside the duct for lines traveling through conditioned spaces where thermal transfer is not a concern.
2. Seal the attic floor and any ductwork with one part spray foam around seams or two part spray foam around duct trunks and delivery lines.
3. Duct sealing can be done with from inside the duct for lines traveling through conditioned spaces where thermal transfer is not a concern.
Frequently Asked Question
How much does it cost to seal your ductwork?
Sealing ductwork typically costs $500 to $4,000, with a national average around $2,250 per home, giving you a flexible range that makes it easier to find an option that fits your budget.
Many homeowners find duct sealing is a straightforward investment, often landing around $1,500 to $2,500 for a standard home or about $1 to $1.50 per sq ft for services like Aeroseal, with pricing tailored to your home’s layout and the improvements your ducts can gain.
The good news is that sealing can improve HVAC efficiency by up to 20%, often paying for itself through energy savings while boosting comfort and indoor air quality.
Many homeowners find duct sealing is a straightforward investment, often landing around $1,500 to $2,500 for a standard home or about $1 to $1.50 per sq ft for services like Aeroseal, with pricing tailored to your home’s layout and the improvements your ducts can gain.
The good news is that sealing can improve HVAC efficiency by up to 20%, often paying for itself through energy savings while boosting comfort and indoor air quality.
What is the 2 foot rule for ductwork?
The 2-foot rule for ductwork is an easy, proven best practice that spaces branch duct takeoffs at least 24 inches apart and keeps them at least 24 inches away from elbows, transitions, and end caps to support smooth, well-balanced airflow.
This gives the air time to stabilize, which supports smoother airflow, lower turbulence, and more even comfort from room to room. In some cases, the 2-foot rule also encourages insulating any duct that runs longer than 2 feet through an unconditioned space, helping the air stay at the right temperature and improving comfort and efficiency.
This gives the air time to stabilize, which supports smoother airflow, lower turbulence, and more even comfort from room to room. In some cases, the 2-foot rule also encourages insulating any duct that runs longer than 2 feet through an unconditioned space, helping the air stay at the right temperature and improving comfort and efficiency.
Can I seal my ducts myself?
Yes, you can seal your own accessible ductwork in attics, basements, or crawlspaces using mastic sealant or metal foil tape for a strong, long-lasting seal. For best results, use mastic sealant or metal foil tape instead of standard cloth duct tape, since those options hold up well over time.
After cleaning the surface, sealing joints and small gaps is a simple way to lock in better airflow and efficiency. For leaks hidden behind walls or hard-to-reach areas, a professional option like Aeroseal can help ensure everything is sealed thoroughly.
After cleaning the surface, sealing joints and small gaps is a simple way to lock in better airflow and efficiency. For leaks hidden behind walls or hard-to-reach areas, a professional option like Aeroseal can help ensure everything is sealed thoroughly.
Will sealing ducts make my furnace or AC work better and last longer?
Yes, sealing your ducts will make your furnace or AC work better and last longer by improving airflow and reducing strain on key components. By stopping leaks, your system can run more efficiently, often boosting performance by up to 20% and lowering energy bills, while also delivering more consistent comfort and cleaner indoor air.
Could sealing my ducts make airflow worse if it is done incorrectly?
Yes, duct sealing can make airflow worse if it is done incorrectly, but the good news is that it is easy to avoid with the right approach. With proper technique, sealing can keep static pressure in a healthy range and protect flex ducts from kinks, helping maintain strong airflow and reducing strain on your HVAC system.
A professional should check static pressure and use proper materials, such as mastic or HVAC foil tape. When sealed correctly, ducts help your HVAC system deliver stronger airflow, more consistent comfort, and better overall performance.
A professional should check static pressure and use proper materials, such as mastic or HVAC foil tape. When sealed correctly, ducts help your HVAC system deliver stronger airflow, more consistent comfort, and better overall performance.
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