Full Duct Swap Cost
A full duct swap in a Sacramento home often runs $2,100 to $4,000 added to your HVAC install. Standalone duct swap for a full home runs $1,400 to $5,600 based on home size and access.
Installation Guide | Updated June 2026
Ductwork Replacement Sacramento ca
Leaky ducts waste 20 to 30 percent of conditioned air before it reaches your rooms. New ducts alongside your HVAC unit add $2,100 to $4,000 but fix the root problem. Fresh Air checks ducts on every free estimate.
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Ductwork Swap in Sacramento: Costs, Signs, and Process
A new HVAC unit on old, leaky ducts is like new tires on a broken axle. The unit runs hard but your home still feels wrong. Fresh Air includes a full duct check on every free in-home visit. We hold CSLB license #945361 and have done 900-plus installs since 2009. This guide covers what full duct swap costs, when it is needed, and what the process looks like.
Partial Duct Fix Cost
Sealing or fixing a few duct sections runs $300 to $1,000. This works when only one or two runs have failed. If more than a third of the system is bad, a full swap costs less in the long run.
Energy Savings
Duct leaks cause 20 percent or more of a home's heating and cooling loss. Homeowners who swap leaky ducts often save 10 to 40 percent on monthly energy bills after the work is done.
Signs Your Ducts Need a Swap
- Rooms that never hit the set temp even when the HVAC unit works fine.
- Visible gaps, cracks, or loose sections in attic or crawlspace ducts.
- Ducts older than 20 years, which often have worn flex duct inner liners.
- High bills that did not drop when you replaced the HVAC unit.
- Uneven airflow: strong in some rooms, weak in others for no clear reason.
- Dust on vents faster than normal, which signals air leaking in from outside.
- Pest damage in the attic that may have torn flex duct sections.
- HVAC unit short-cycling due to back-pressure from poor duct design.
What Fresh Air Looks For During a Duct Check
Our techs check duct sizing against your new unit's airflow needs. Many older Sacramento homes have ducts sized for gear from the 1980s and 1990s. New high-savings units move more air per ton. Undersized ducts create pressure that makes the blower work harder and wear out faster.
We also check for leaks at joints, collapsed flex duct runs in attics, and loose sections that dump air into unconditioned crawlspaces. If we find problems, we quote duct work as a separate line item. You see exactly what each part of the project costs.
Ductwork Replacement Sacramento ca FAQ
How much does full duct swap cost in Sacramento?
For most Sacramento homes in the 1,500 to 2,500 sq ft range, full duct swap runs $2,100 to $4,000 when done with an HVAC unit swap. Larger homes or tough crawlspace access add to the total.
Can I just seal my ducts instead of swapping them?
Duct sealing with mastic or aeroseal works well when the duct structure is sound but joints have minor leaks. When flex duct liners are crumbling or sections are collapsed, sealing does not fix the core problem. Fresh Air tells you which applies to your home.
Does Fresh Air always swap ducts when adding a new HVAC?
No. We check ducts on every free visit and only suggest a swap when it is needed. Many Sacramento homes have ducts in fine shape that work well with a new unit.
How long does a duct swap take?
A full duct swap alongside an HVAC install often adds four to eight hours of labor. We schedule it as part of the same visit when we can to cut down on disruption.
Does California need duct testing when I swap my HVAC?
Title 24 needs duct leakage tests for qualifying swaps. Fresh Air handles the paperwork and works with a HERS rater to finish the check when your permit needs it.
Get a Free Estimate That Includes a Duct Check
Fresh Air checks every duct system as part of your free in-home visit. We serve Sacramento, Elk Grove, Folsom, Roseville, El Dorado Hills, and nearby areas. Call (916) 416-8181 or visit /contact/. Licensed CSLB #945361, insured, since 2009.