Leaking ductwork wastes a substantial share of the air your system conditions, and in homes where ducts run through unconditioned crawlspaces or attics that loss can reach a quarter or more of total output. Unlike an equipment upgrade, sealing is comparatively cheap and it produces a change you can actually feel at the registers.
The classic symptom is a room that never gets comfortable. One bedroom always warmer, a bonus room over the garage that stays hot in July and cold in January, or a finished basement that will not hold temperature. That is often a duct problem rather than an equipment problem, and it does not get fixed by installing a bigger condenser.
Common faults in Springfield homes are disconnected flexible runs that have pulled loose in a crawlspace, unsealed joints where the original installer relied on tape that has aged and failed, crushed or sharply kinked flex duct, undersized returns starving the blower, and runs added during a remodel without recalculating the trunk capacity.
We handle sealing with mastic and mechanical fastening rather than tape alone, plus repair and full replacement where the system is beyond patching. On any replacement quote we inspect the ducts first, because attaching new equipment to a compromised duct system is how a good install ends up underperforming. If the ducts are also dirty, air duct cleaning can be done at the same visit.
Ductwork Repair and Replacement Services We Offer
✓Duct Sealing
Mastic sealing of joints and connections to stop conditioned air escaping into crawlspaces and attics.
✓Duct Leak Repair
Reconnecting pulled-loose runs and repairing damaged sections.
✓Ductwork Replacement
Full or partial replacement where the existing system is undersized, crushed or beyond repair.
✓New Duct Runs
Extending the system to additions, finished basements and converted spaces.
✓Return Air Improvements
Adding or enlarging returns where restricted return air is starving the blower.
Ductwork Repair and Replacement Cost in Springfield, IL
| Service | Typical Range | What Affects It |
|---|---|---|
| Duct inspection and report | $150 - $250 | Waived with sealing work |
| Duct sealing, typical home | $600 - $1,800 | Accessible runs |
| Repair of disconnected or damaged runs | $300 - $900 | Per section |
| Partial ductwork replacement | $1,500 - $5,000 | Depends on access and extent |
| Full duct system replacement | $5,000 - $12,000 | Whole-home reconfiguration |
| Added return air run | $500 - $1,500 |
Ranges are typical for Springfield, IL and confirmed with an exact written quote before any work starts.
Pricing
Duct sealing from $600 · Partial replacement $1,500 to $5,000