Actual EVS work

Bay Area HVAC service

Ductwork Installation in Santa Clara & the Bay Area

New ductwork installation, duct system redesign, and duct replacement for Bay Area homes. Properly sized ducts designed to Manual D standards. Metal and flex duct options. Permits handled. Family-run.

Call (408) 300-8254 Get Free Estimate

CA Lic #1089826Licensed · Insured · Bonded1-2 Hour CallbackPermits Handled

Ductwork installation in Santa Clara and the Bay Area — EVS Mechanical installs new ductwork for new construction, additions, and HVAC replacement that needs redesigned duct systems. Every installation includes Manual D duct design, permit handling, and airflow testing. Call (408) 300-8254 for a free estimate.

What Is Ductwork Installation?

Ductwork installation means designing and installing a new system of air distribution ducts for your home's HVAC system. This is different from duct repair — installation starts from scratch, whether for new construction, a major addition, or replacing an old, undersized, or poorly designed duct system. Proper duct design is just as important as proper equipment sizing.

When to call about yours:

You're building a new home or major addition
You're finishing a basement, attic, or garage conversion
Your current ducts are undersized, collapsed, or beyond repair
Your HVAC replacement requires redesigned ductwork
You have no ducts at all (older home) and want central HVAC
Your current system was designed by a general contractor, not an HVAC professional

Who this is for: Homeowners in Santa Clara, San Jose, Sunnyvale, Mountain View, Palo Alto, Los Gatos, Santa Cruz, Cupertino, Campbell, Saratoga, Los Altos, and Milpitas. Also new construction and light commercial.

What you get from an EVS install

Manual D design.

We design your duct system to ACCA Manual D standards — the professional standard for residential duct design. Not "what fits." Not "what we have on the truck."

Proper sizing to match your HVAC unit.

Ducts must match the airflow requirements of your furnace, AC, or heat pump. Undersized ducts cause noise, short cycling, and premature equipment failure.

Permits handled.

Every Bay Area city requires permits for new ductwork installation. EVS pulls the permit and schedules the inspection.

1-2 hour callback.

Call (408) 300-8254. We call back within 2 hours.

Material options.

Metal duct, flex duct, or combination — we recommend based on your home, budget, and access.

Family-run.

Euler Vargas oversees every installation. No subcontractors.

Manual D design.

We design your duct system to ACCA Manual D standards — the professional standard for residential duct design. Not "what fits." Not "what we have on the truck."

Proper sizing to match your HVAC unit.

Ducts must match the airflow requirements of your furnace, AC, or heat pump. Undersized ducts cause noise, short cycling, and premature equipment failure.

Permits handled.

Every Bay Area city requires permits for new ductwork installation. EVS pulls the permit and schedules the inspection.

1-2 hour callback.

Call (408) 300-8254. We call back within 2 hours.

Material options.

Metal duct, flex duct, or combination — we recommend based on your home, budget, and access.

Family-run.

Euler Vargas oversees every installation. No subcontractors.

From first call to finished job

Call or Book Online

Call (408) 300-8254. We call back within 2 hours. Tell us about your project — new construction, addition, or replacement.

Site Visit + Duct Design

We measure the home, check attic/crawlspace access, and design the duct system. This includes calculating required CFM for each room, sizing trunk lines and branches, and planning register locations.

Custom Quote (Written, No Surprises)

Written quote with: duct material type, number of supply and return registers, permit fees, timeline, and total price.

Permits + Scheduling

We pull the permit with your city. Schedule the installation.

Installation

We install trunk lines, branch ducts, registers, and returns. Insulate ducts in unconditioned spaces. Seal all joints with mastic. Connect to your HVAC equipment.

Airflow Testing + Final Walkthrough

We test airflow at each register to confirm design targets. Walk you through register locations, filter changes, and maintenance.

Call or Book Online

Call (408) 300-8254. We call back within 2 hours. Tell us about your project — new construction, addition, or replacement.

Site Visit + Duct Design

We measure the home, check attic/crawlspace access, and design the duct system. This includes calculating required CFM for each room, sizing trunk lines and branches, and planning register locations.

Custom Quote (Written, No Surprises)

Written quote with: duct material type, number of supply and return registers, permit fees, timeline, and total price.

Permits + Scheduling

We pull the permit with your city. Schedule the installation.

Installation

We install trunk lines, branch ducts, registers, and returns. Insulate ducts in unconditioned spaces. Seal all joints with mastic. Connect to your HVAC equipment.

Airflow Testing + Final Walkthrough

We test airflow at each register to confirm design targets. Walk you through register locations, filter changes, and maintenance.

Our Work

Real installs — our crew on every job

Gas furnace installed in closet alcove

Carrier outdoor condenser unit on pad

Bryant gas furnace in garage

TOSOT heat pump outdoor unit

Furnace on raised platform in utility closet

Air handler with insulated ductwork in attic

HVAC unit with ductwork in crawlspace

Furnace installation in garage

Garage HVAC system wide view

EVS technicians servicing a Lochinvar commercial rooftop unit

EVS technician working on commercial rooftop HVAC equipment

Two TOSOT heat pump units installed on a flat roof

New TOSOT heat pump installation on a flat roof

TOSOT inverter heat pump dual-fan condenser

TOSOT heat pump with EnergyGuide rating, rooftop install

TOSOT condenser unit secured on a flat roof

Completed rooftop heat pump installation, wide view

Air handler with new insulated ductwork installation

Pricing

Get an accurate quote

(408) 300-8254

Owner on every installNo subcontractorsFree estimates

Typical ranges for planning

New ductwork — single-story home

Complete duct system, supply and return

New ductwork — two-story home

Additional runs, more complex routing

Ductwork for addition (1-2 rooms)

Extending existing system

Retrofit ducts in older home

No existing ducts — more labor for routing

Service	What to expect
New ductwork — single-story home	Complete duct system, supply and return
New ductwork — two-story home	Additional runs, more complex routing
Ductwork for addition (1-2 rooms)	Extending existing system
Retrofit ducts in older home	No existing ducts — more labor for routing

Higher cost:

Two-story homes, limited attic/crawlspace access, plaster-and-lathe walls (harder to cut), multiple stories, distant rooms requiring long flex runs

Lower cost:

Single-story with open attic access, new construction (no existing finishes to work around), installation bundled with new HVAC equipment

Financing: Coming soon — call for current options.

Homeowner Proof

5.0

49 Google reviews

Clean work. Clear prices. People who answer after the install.

Customers remember the details: showing up, explaining the options, protecting the home, and standing behind the system later.

“We converted our home from a gas furnace to a full electric heat pump system and upgraded to a two-zone setup, giving each floor its own temperature control. EVS guided us through every step, explained our options clearly, and made a complicated project feel straightforward. The installation was clean and completed with a high level of craftsmanship — and their pricing was the most competitive of all the quotes we received.”

Aditya O.

Gas-to-heat-pump conversion, two zones · Bay Area

Verified

“Really impressed with EVS Mechanical — they earned every one of these five stars. The heat pump they installed has been incredibly efficient, and our energy bills have actually dropped. They showed up exactly when they said they would and were careful with our home during the installation. Would absolutely recommend EVS to anyone in the Bay Area.”

Nate

Heat pump installation · Bay Area

Verified

“EVS Mechanical made what could have been a stressful process incredibly smooth. They diagnosed and repaired our HVAC system quickly and got everything running again. They didn't just do the work — they made sure we understood what was happening and why. Honest pricing, no upselling on things we didn't need. If you need HVAC work done right, call EVS Mechanical.”

Michael C.

HVAC repair · Bay Area

Verified

“I called EVS for a regular furnace service and they were here very quickly. They performed the service in one day and also discovered the very old condensate pump was not working properly causing water to pool around the furnace. They replaced the pump the next day. Would definitely use their services again.”

Christopher H.

Furnace service & repair · Bay Area

Verified

“Euler and his team were able to replace our 23 year old attic Carrier furnace after our existing unit's heating chamber failed. I called him at 10am, and he was at my house by 11am, diagnosed the issue and found a new replacement unit and had it installed by 4pm. Very friendly and great price too.”

Byron R.

Same-day furnace replacement · Bay Area

Verified

“We had a great experience with Euler at EVS Mechanical installing a heat pump heating and A/C system in our home. He was professional, knowledgeable, and easy to work with from start to finish. The installation was clean and efficient, and the system works beautifully. Highly recommend!”

Ani G.

Heat pump installation · Scotts Valley

Verified

“I had a great experience with Euler & Axel. They came promptly to check my AC issue and quickly assessed the problem. I really appreciated that I had already received a clear quote upfront, so there were no surprises. They also went above and beyond by helping with my dryer. Professional, reliable, and efficient.”

Varsha R.

AC repair · Bay Area

Verified

“EVS Mechanical is a great HVAC company! They were very professional, on time, explained everything and had a very competitive price. They found asbestos and we had to replace our entire furnace and duct work — it was done in a week. They filed the permits and handled everything. I highly recommend them.”

Rosalyn Y.

Furnace & ductwork · San Jose

Verified

“Excellent experience with Euler. Very professional, punctual, knowledgeable, and genuinely helpful. The installation was completed on time with an exceptionally clean job. Nearly a year after the installation, I contacted him about a repair issue. He fixed the problem without any hassle. Highly recommend.”

Aditya A.

Installation & follow-up repair · Bay Area

Verified

“We converted our home from a gas furnace to a full electric heat pump system and upgraded to a two-zone setup, giving each floor its own temperature control. EVS guided us through every step, explained our options clearly, and made a complicated project feel straightforward. The installation was clean and completed with a high level of craftsmanship — and their pricing was the most competitive of all the quotes we received.”

Aditya O.

Gas-to-heat-pump conversion, two zones · Bay Area

Verified

“Really impressed with EVS Mechanical — they earned every one of these five stars. The heat pump they installed has been incredibly efficient, and our energy bills have actually dropped. They showed up exactly when they said they would and were careful with our home during the installation. Would absolutely recommend EVS to anyone in the Bay Area.”

Nate

Heat pump installation · Bay Area

Verified

“EVS Mechanical made what could have been a stressful process incredibly smooth. They diagnosed and repaired our HVAC system quickly and got everything running again. They didn't just do the work — they made sure we understood what was happening and why. Honest pricing, no upselling on things we didn't need. If you need HVAC work done right, call EVS Mechanical.”

Michael C.

HVAC repair · Bay Area

Verified

“I called EVS for a regular furnace service and they were here very quickly. They performed the service in one day and also discovered the very old condensate pump was not working properly causing water to pool around the furnace. They replaced the pump the next day. Would definitely use their services again.”

Christopher H.

Furnace service & repair · Bay Area

Verified

“Euler and his team were able to replace our 23 year old attic Carrier furnace after our existing unit's heating chamber failed. I called him at 10am, and he was at my house by 11am, diagnosed the issue and found a new replacement unit and had it installed by 4pm. Very friendly and great price too.”

Byron R.

Same-day furnace replacement · Bay Area

Verified

“We had a great experience with Euler at EVS Mechanical installing a heat pump heating and A/C system in our home. He was professional, knowledgeable, and easy to work with from start to finish. The installation was clean and efficient, and the system works beautifully. Highly recommend!”

Ani G.

Heat pump installation · Scotts Valley

Verified

“I had a great experience with Euler & Axel. They came promptly to check my AC issue and quickly assessed the problem. I really appreciated that I had already received a clear quote upfront, so there were no surprises. They also went above and beyond by helping with my dryer. Professional, reliable, and efficient.”

Varsha R.

AC repair · Bay Area

Verified

“EVS Mechanical is a great HVAC company! They were very professional, on time, explained everything and had a very competitive price. They found asbestos and we had to replace our entire furnace and duct work — it was done in a week. They filed the permits and handled everything. I highly recommend them.”

Rosalyn Y.

Furnace & ductwork · San Jose

Verified

“Excellent experience with Euler. Very professional, punctual, knowledgeable, and genuinely helpful. The installation was completed on time with an exceptionally clean job. Nearly a year after the installation, I contacted him about a repair issue. He fixed the problem without any hassle. Highly recommend.”

Aditya A.

Installation & follow-up repair · Bay Area

Verified

“We converted our home from a gas furnace to a full electric heat pump system and upgraded to a two-zone setup, giving each floor its own temperature control. EVS guided us through every step, explained our options clearly, and made a complicated project feel straightforward. The installation was clean and completed with a high level of craftsmanship — and their pricing was the most competitive of all the quotes we received.”

Aditya O.

Gas-to-heat-pump conversion, two zones · Bay Area

Verified

“Really impressed with EVS Mechanical — they earned every one of these five stars. The heat pump they installed has been incredibly efficient, and our energy bills have actually dropped. They showed up exactly when they said they would and were careful with our home during the installation. Would absolutely recommend EVS to anyone in the Bay Area.”

Nate

Heat pump installation · Bay Area

Verified

“EVS Mechanical made what could have been a stressful process incredibly smooth. They diagnosed and repaired our HVAC system quickly and got everything running again. They didn't just do the work — they made sure we understood what was happening and why. Honest pricing, no upselling on things we didn't need. If you need HVAC work done right, call EVS Mechanical.”

Michael C.

HVAC repair · Bay Area

Verified

Read all Google reviews

Frequently Asked Questions

A full-home ductwork installation typically takes 1-3 days. New construction (wide open access) is faster. Retrofits in existing homes take longer due to working around finished ceilings and walls.

Duct repair fixes existing ducts. Ductwork installation means designing and installing a completely new system. If your existing ducts are in decent shape, repair is sufficient. If they're undersized, deteriorating, or if you're adding rooms, new installation is the right solution.

Yes. All Bay Area cities require permits for new ductwork installation. EVS handles this — we pull the permit and schedule inspection.

Duct size depends on your HVAC equipment's airflow (CFM), the length of each duct run, and the number of rooms. This is determined by a Manual D design calculation — not a rule of thumb. EVS performs this as part of the quote process.

Yes. Ductwork connects to any brand of furnace, AC, or heat pump the same way — through the equipment's supply and return plenums. We design ducts to match the airflow specifications of your specific unit.

Yes. This is a common project for older Bay Area homes that were built with gravity furnaces, radiators, or wall heaters. We design the routing and install the full system.

Flex duct is flexible, less expensive, and easier to install in tight spaces. Metal duct is rigid, more durable, and has lower airflow resistance. Most installations use metal for main trunk lines and flex for branch runs to individual rooms.

In homes without existing ducts, adding ductwork increases the home's HVAC options significantly — you can install central AC, a heat pump, or a new furnace. In homes with old or undersized ducts, replacement improves system efficiency and comfort, which is a selling point.

Yes. If you're adding a room, finishing a garage, or converting a basement, EVS can extend your existing duct system or design a new independent system for the addition.

Bay Area Specifics

New Construction Requirements

Santa Clara, San Jose, and most Bay Area cities have Title 24 energy code requirements that affect duct design — insulation levels, duct sealing requirements, and testing protocols. EVS designs to meet or exceed these requirements.

Crawlspace vs Attic

Homes in Santa Cruz, Los Gatos hills, and older Santa Clara neighborhoods often have crawlspace ductwork. Newer construction and homes with forced-air HVAC typically have attic ducts. EVS designs for your specific access conditions.

Older Home Duct Retrofit

Many pre-1960 Bay Area homes have no ductwork at all — they used gravity furnaces or radiators. Adding ducts to these homes requires careful planning to minimize wall and ceiling damage. EVS designs routing that balances access, aesthetics, and performance.

PG&E Energy Efficiency

Well-designed ductwork improves the efficiency of any HVAC system. Properly sealed and insulated ducts can reduce energy waste by 20-30% compared to leaking or uninsulated ducts. This directly lowers your PG&E bills.