Bigger or unusual job? Compare bids from local pros and you pick who does the work.
The service
What ductwork installation & repair is, what a visit covers and where the line is.
The short answer
Ductwork installation and repair covers the metal, flex and fiberboard channels that carry heated and cooled air through your home. Ductwork Installation & Repair in Los Altos is booked through pros who cover its 2 ZIP codes, in neighborhoods such as Old Los Altos, Downtown Los Altos Village, and Country Club. In Los Altos, the dry season from late spring to fall is the easiest time for outside work, and the fall calendar fills before the first big rain. Every pro on NorTech is independent and sets their own price and warranty, and you pick who does the job.
What a ductwork installation & repair visit includes
What is included depends on the jobs you pick and on how each pro sets up their visit and timing. You see the exact scope with each pro's price before you book.
- Duct assessment
- Installation or repair
- Seal & insulate
- Airflow test
- workmanship warranty
Pick what is on your ductwork installation & repair list
Tick what you want done, or add your own. Your list goes under the booking card and to the pro you choose, and you can describe anything else when you book.
Leaks and disconnections
Tick what you want done. One visit can cover several.
Tick jobs above, or add your own. Your list goes under the booking card and to the pro you choose, so they see exactly what you need before they arrive.
What shapes a ductwork installation & repair job
These are the things that make one job different from another. Mention them in your notes so each pro can scope your job properly.
What is not part of ductwork installation & repair
Knowing where the line is keeps the visit on track and keeps you safe. When a job belongs to a specialist, NorTech tells you before you book.
- Any job where labor and materials together reach $1,000 or more is done by a licensed contractor, and NorTech flags it before you book. A full replacement of the ducts usually reaches that level.
- Replacing the furnace, air conditioner or heat pump itself. Those are separate HVAC services done by pros who hold the license.
- Cleaning the inside of ducts to remove dust. That is the air duct cleaning service.
- Mold remediation inside ducts or the house. If a pro finds mold, they stop and tell you, and it goes to a specialist.
- Adding insulation to the attic floor or crawl space itself, or sealing the building shell. Those have their own services.
- Gas line, flue or electrical work connected to the equipment. Those are licensed-trade work for the matching pro.
License and permits for ductwork installation & repair
Duct work connects to heating and cooling equipment and affects airflow and combustion air, so in many places it is licensed-trade work. The pros who do it hold the license, and they can tell you whether your job needs one.
A new duct run, a major replacement or a change to the layout commonly needs a permit and an inspection, often before the ducts are covered. Small sealing and repair jobs may not. Your pro tells you which applies.
Look at the pro profile for their license and insurance. Ask to see the permit and the inspection record for new runs, and keep any test results from airflow or leakage checks.
Plan your visit
How booking works, how to get ready, and what to expect where you live.
How booking ductwork installation & repair works
Say what needs doing
Add your ZIP and a few words about the job.
Compare pros near you
Each pro sets their own price and warranty. NorTech does not pick for you.
Book the pro you pick
Add photos and details on their page. Your card is held and only charged after the work and the photos.
Photos and a warranty
Your pro backs the work with a workmanship warranty — if covered work is not right, your pro makes it right, free.
Before you book ductwork installation & repair
Quick things that save a trip. Tick them off as you go; none of it is required to book.
Note which rooms are the problem
Write down the rooms that are too hot or cold, which season, and what time of day. A pattern like an upstairs room in the afternoon points to a different fix than a basement room in winter.
Check the filter first
A clogged filter reduces airflow all through the house and mimics a duct problem. Replace it before the visit so the pro is measuring the real ducts.
Open all the registers
Leave the registers and return grilles open and unblocked by furniture or rugs. Closed registers can raise the pressure inside the ducts and increase leaks.
Photograph what you can reach
If you can safely look in the attic or crawl space, photograph ducts that look crushed, wet, disconnected or chewed. Do not walk on joists or insulation you cannot see.
Clear the access
Clear the path to the attic hatch, crawl space door and the air handler. Move stored items so the pro can see the full run.
Ask about a pressure or leakage test
A before-and-after reading of airflow or leakage shows whether the work helped. Ask each pro whether they include one and what they record.
Say where in Los Altos you are
Add your neighborhood, for example Old Los Altos, Downtown Los Altos Village, and Country Club, or your ZIP code to your notes. Pros choose the neighborhoods they cover, and it tells them how far they have to travel.
How where you live changes ductwork installation & repair
Best time to book ductwork installation & repair
Attics and crawl spaces are miserable and sometimes unsafe in peak summer heat. Spring and fall give the pro a workable space, and you finish the repairs before the heating or cooling season puts the system under load. In Los Altos, the dry season from late spring to fall is the easiest time for outside work, and the fall calendar fills before the first big rain.
Often booked together with ductwork installation & repair
Book several services with one pro. Pros set their own bundle discounts.
Cleaning removes dust and debris once the leaks and damage are fixed, so the cleaning lasts longer.
Insulating the attic or crawl space around the ducts keeps the whole system from losing heat or cold.
Ducts are often sealed or resized in the same project as a new furnace, air conditioner or heat pump.
An inspection can reveal airflow and condition problems and helps you decide between repair and replacement.
Around Los Altos
Where in Los Altos the work happens, and the cities close by.
Ductwork Installation & Repair across Los Altos
Pick your neighborhood to see what homes there tend to need. Pros choose the neighborhoods they cover, so enter your ZIP code to see who covers yours.
Cities near Los Altos
Pros often cover more than one city. The rings show 5 and 10 miles from the center of town.
Other services in Los Altos
Each one has its own page for this city.
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See pros in Los AltosOriginal 1950s-60s ranches and rebuilds in Old Los Altos often need cracks, nail pops, and patches smoothed before paint or sale.
See pros in Los AltosRefreshing dated flooring is a popular high-end finish upgrade for Eichlers and ranch homes being modernized across North and South Los Altos.
See pros in Los AltosFrom punch-list fixes to mid-century maintenance, an up-front handyman visit keeps Country Club and Highlands homes in top shape.
See pros in Los AltosClean, hidden-wire mounts suit the open walls and flat-roof lines of Los Altos Eichlers and contemporary custom rebuilds.
See pros in Los AltosFull furnace/AC system replacement, not a repair — sized, permitted, and installed by a verified C-20 HVAC contractor.
See pros in Los AltosTrust and answers
What backs the work, who is licensed and insured, what customers say, and your questions.
Backed by your provider’s warranty. If covered work fails, your provider makes it right, free.
Looking for a licensed HVAC contractor? Bigger jobs and anything that needs a permit go to a verified California C-20 contractor. See licensed HVAC contractor services.
Los Altos homeowners
Ductwork Installation & Repair reviews in Los Altos
Verified ductwork installation & repair reviews from Los Altos homeowners will appear here.
Be the first ductwork installation & repair review in Los Altos
Your pro backs the work with a workmanship warranty — if covered work is not right, your pro makes it right, free. Book with confidence and tell Los Altos how your pro did.
Book Ductwork Installation & Repair in Los AltosFrequently asked