Independent contractors, licensed in California
(844) 785-4066

Can wait

Attic Ventilation in California

Balancing intake and exhaust so the attic actually moves air. Most poorly ventilated attics have exhaust but no working intake, which makes the exhaust close to useless.

Call (844) 785-4066 Do you need it?

Call about Attic Ventilation

(844) 785-4066

No charge to you, and you are never committed to going ahead.

What happens when you call

  1. You describe the problem and where you are.
  2. We put you in touch with a licensed local company covering that area.
  3. They arrange the visit and agree the price with you directly.

Worth having to hand

  • What you have noticed, and where in the property
  • Roughly how long it has been going on
  • Whether it is worse when the system is running
  • Your ZIP code
  • Licensed & insured Every company we put you through to holds current licensing and insurance.
  • Know what to ask You are told what actually decides the price, so you can judge a quote.
  • Someone local You are put through to a technician who works your area, not a call center three states away.
  • Calls answered 7 days Someone picks up seven days a week, weekends included.

Is it urgent?

Can wait

Not urgent, but it is often the real cause of a problem being blamed on something else: a hot upstairs, ice damming, a damp attic, or duct in the attic working far harder than it should.

Two things override everything on this page. If anyone has symptoms of carbon monoxide exposure — headache, nausea or dizziness that improves outdoors — leave the building and call the gas utility or the fire service, not a duct company. And if you can smell burning while the dryer is running, unplug it and leave it.

Signs to look for

  • An upstairs that will not cool however long the system runs
  • Ice damming along the eaves in winter
  • Condensation, frost or damp sheathing visible in the attic
  • Soffit vents that are blocked by insulation pushed into the eaves
  • A ridge vent or gable fan fitted with no intake path to feed it

How the work is done

  1. Measuring the net free ventilating area against the attic footprint, rather than counting vents
  2. Checking the intake first. Exhaust without intake pulls conditioned air up out of the house instead of air in from outside
  3. Clearing blocked soffits and fitting baffles so insulation cannot re-block them
  4. Balancing rather than maximizing — an attic with far more exhaust than intake depressurizes and pulls from the living space

In California specifically

In California the ductwork is generally in attics and crawlspaces, and on slab-on-grade homes in the south often under the floor or in the ceiling plenum, which is most of why this job looks the way it does here. Wildfire smoke is the single biggest thing that makes Californians think about what their ducts are carrying. Fine particulate gets pulled into a return during a smoke event and keeps circulating long after the air outside has cleared. California is also the one state where duct leakage is routinely tested: Title 24 requires a HERS-verified duct test on most furnace or air-conditioner changeouts, so a duct problem here often surfaces as a failed test rather than as a complaint.

Before the technician arrives

Four things worth doing — and the first one is usually the thing people get wrong.

  1. Do not fit another attic fan before the intake is checked. A powered fan with no intake pulls conditioned air out of the house, which costs money and can backdraft a combustion appliance.
  2. Look up at the eaves from inside the attic and see whether daylight is visible at the soffits.
  3. Note whether the problem is summer heat, winter damp, or both — they point at different failures.
  4. Mention any insulation work done recently, since blocked soffits usually date from it.

What the work looks like

Photographs of attic ventilation being carried out, so you know what to expect on the day.

How it works

Three steps, and you decide at the end of them.

  1. 1

    You call and describe the problem

    Tell us what you have noticed and where — the room, the smell, the noise, how long it has been going on. Give us your ZIP code and we will match you to a licensed company covering your area. There is no form to fill in.

  2. 2

    A local company takes it from there

    They discuss the problem with you directly, arrange a time to inspect, and agree the work and the price with you before anything starts. That conversation is between you and them.

  3. 3

    You decide whether to go ahead

    You are under no obligation. If the quote or the approach is not what you wanted, you are free to say no and call someone else.

Attic Ventilation — FAQs

Do I actually need Attic Ventilation done?

Not urgent, but it is often the real cause of a problem being blamed on something else: a hot upstairs, ice damming, a damp attic, or duct in the attic working far harder than it should.

What does Attic Ventilation involve?

Balancing intake and exhaust so the attic actually moves air. Most poorly ventilated attics have exhaust but no working intake, which makes the exhaust close to useless.

What makes this different in California?

In California the ductwork is generally in attics and crawlspaces, and on slab-on-grade homes in the south often under the floor or in the ceiling plenum, which is most of why this job looks the way it does here. Wildfire smoke is the single biggest thing that makes Californians think about what their ducts are carrying. Fine particulate gets pulled into a return during a smoke event and keeps circulating long after the air outside has cleared. California is also the one state where duct leakage is routinely tested: Title 24 requires a HERS-verified duct test on most furnace or air-conditioner changeouts, so a duct problem here often surfaces as a failed test rather than as a complaint.

Are the companies licensed and insured?

Yes. We only pass calls to licensed, insured operators working in California, and you are welcome to ask to see a license number on arrival.

What does Attic Ventilation cost?

It depends on the property, the size of the system and what the inspection finds, so we do not publish a price — a figure quoted on a web page is not one the attending company has agreed to. You get a price before any work starts.

Attic Ventilation near you

All California towns →

Call now How it works