Duct Repair & Replacement in Milpitas, CA

What are the signs that my ducts need repair?

The most common sign is a system that runs longer than it used to while some rooms still feel too warm or too cold. Ducts are out of sight, so problems often go unnoticed until comfort or energy bills change. Here is what we look for.

What you notice	Common duct causes	What we do
Weak airflow from some vents	Crushed, kinked or disconnected duct runs	Trace each run and reconnect, straighten or replace damaged sections
Hot and cold rooms	Leaks, undersized ducts or long runs to far rooms	Check airflow room by room and look at duct sizing and layout
Higher heating and cooling bills	Air leaking at joints, seams and boots	Seal leaks and test the system
System runs longer than before	Lost air from leaks or torn ducts	Inspect the ducts in the attic or crawl space
More dust than usual	Leaky return ducts pulling in attic or crawl space air	Seal the returns and suggest cleaning if needed

Should I repair or replace my ductwork?

Repair makes sense when the problem is limited to a few sections, like a disconnected run or a leaky joint. Replacement is worth a look when:

• Many runs are torn, crushed or falling apart.
• The insulation on the ducts is damaged or missing.
• Leaks keep showing up in different places.
• Some rooms never get enough air, even after repairs.
• You are replacing your furnace, AC or heat pump, and the old ducts don’t match the new system.

We will tell you honestly which option fits your home. If new ductwork makes sense, the estimate is free and comes with a clear written quote.

What happens during duct repair or replacement?

1. Inspection. A technician checks the ducts, connections and airflow at each room to find leaks, damage and weak spots.
2. A clear price first. You get a written price before any work begins. Nothing is done without your OK.
3. Repair or replace. We reconnect and seal leaky sections, or remove old ducts and install new insulated ductwork sized for your system.
4. Permits and testing. When the job needs a permit or HERS testing (a third-party check of how tight the ducts are), we handle it for you.
5. Final check. We run the system and check airflow at the vents before we leave.

Is duct repair the same as duct cleaning?

No. Duct repair fixes leaks and damage so air gets where it should. Air duct cleaning removes dust and debris from ducts that are still in good shape. Our Rotobrush duct cleaning scrubs and vacuums every duct at the same time, and it costs $399 for up to 10 vents, plus $15 per extra vent. If we see damage while cleaning, we will point it out so you can decide what to do.

What if some rooms are hard to reach with ducts?

Some rooms, like additions, converted garages or far bedrooms, are hard to serve with ducts. In those cases a ductless mini-split can heat and cool the room without new ductwork. If your home has ducts but one floor or area is always uncomfortable, a zoning system lets you control areas separately.

What can I do to help my ducts work better?

• Change the filter. Replace it every 1 to 3 months so air moves freely.
• Keep vents open. Don’t close vents in unused rooms. It can upset the airflow balance of the whole system.
• Keep vents clear. Move furniture and rugs off supply vents and returns.

I highly recommend Upgrade Home Services. Victor is fair, knowledgable, affordable, and provides very professional customer support.

Dawn S., Google review

Who repairs and replaces ducts near me?

Upgrade Home Services is a family-owned HVAC company based at 743 Ames Ave in Milpitas, licensed by the California Contractors State License Board (CSLB #1066776) and serving homeowners since 2002. We work on ducts for every major brand of furnace, AC and heat pump, including Amana, Carrier, Payne, Goodman, Daikin and Mitsubishi. We serve 22 cities in Santa Clara, San Mateo and southern Alameda counties, including Milpitas, San Jose, Santa Clara, Sunnyvale and Fremont. A diagnostic visit is $89, waived when you approve the repair.