Indoor Air Quality Services

Source control first

Indoor Air Quality Starts Where Your Air Comes From.

Whenever your system runs, the air in your rooms cycles through ducts that sit in a 130 to 150° attic. If attic air, dust and insulation fibers are getting into that loop, no filter in the house can keep up with it.

The assessment finds where it gets in: leakage split by supply and return, room pressures, thermal images, air quality readings
We fix it at the source first; the assessment’s readings decide whether anything else is recommended
Filtration, treatment and fresh air only when the readings call for them
You will not be sold a filter, a purifier or a ventilation system to fight a leak that costs less to seal

(602) 675-6827

Free Duct & Attic Assessment, about 2 hours, with you present. We do not sell or service HVAC equipment.

A Knights of the Attic technician holding a flow hood over a ceiling register to measure the air it delivers — Measured at every register

Sound Familiar?

Signs the Air Is Picking Something Up on the Way

Dust is the visible symptom. Every one of these points at an opening between the attic, the garage and the loop your air travels in.

Check the ones that sound like your home

Takes about 15 seconds. Nothing is submitted.

Dust that comes right back: you dust on Saturday, it is back by Tuesday
An “attic” smell the moment the blower kicks on
Dark streaks at vents, the return grille or the attic hatch
Filters that load up gray in weeks
Rooms that never feel fresh, even with the system running all afternoon
Garage or attic odors indoors

A one-inch return filter pulled inward and loaded gray with dust — A filter that loads up in weeks is catching air that shouldn’t be there.

Follow the Air

Your Air Travels in a Loop. Every Opening Into It Is After the Filter.

Six openings into the loop, plus the garage. Tap one to seal it and watch the load in the air drop. Most homes have several.

Load in the airHigh

Seven openings, none sealed. Every red arrow is attic or garage air joining the loop somewhere a filter can’t reach.

Behind the filter, nothing is filtered. A return-side gap no wider than a pencil, under blower suction for hours a day, keeps feeding attic air to every room. That is why we test the return side first.

Why the Order Matters

Close the Loop First. Then Clean What’s Inside It.

The same loop, one step at a time. Each step only works on the air the step before it left behind, so the order is fixed even when the list of steps isn’t.

Load in the airHigh

As found. Attic air and dust enter through return leaks, open boots and bypasses. The filter never sees most of it.

Why a filter or purifier added first disappoints

Filter first, leak still openStill dusty

The filter cleans the air at the grille. Then the return leak adds attic air after the filter, on every cycle. The house stays dusty, the filter loads up fast, and the purchase feels like it did nothing.

Source control first, then the filterStays cleaner

The leak is sealed first. Now every bit of air that moves through the loop passes the filter, and each pass takes more out than the house puts in. The same filter, doing the job it was bought for.

Not every home needs every step. Many homes are done after source control and the right filter. If the readings after the fix say you’re there, we tell you that, and we stop. Load bars are illustrative; your home’s readings come from the assessment.

Steps 2, 3 and 4

Catch It. Treat It. Dilute It.

What each step adds once the loop is closed, and what none of them can do. Tools, not a package.

A deep-pleat media filter seen edge on, its folds far deeper than a one-inch filter

Step 2 · Filtration

Deep Pleat Filtration

What it addsA deep media filter in place of the 1-inch filter. Far more surface area catches more dust and allergens per pass, loads up slower and restricts the airflow less. HEPA where the readings call for it.

What it can’t doClean air that enters after it. A return leak feeds the house attic air no filter has touched.

A PuriFi whole-home air purification unit

Step 3 · Treatment

PuriFi Air Purification

What it addsWhole-home air purification added to the system once the loop is sealed and properly filtered. It works on the air that keeps circulating through the rooms, pass after pass.

What it can’t doOut-run an open return leak or a detached duct. Added first, it treats a problem that refills itself.

A bright, clean Arizona living room with the windows open to the yard

Step 4 · Dilution

Fresh Air Ventilation

What it addsA measured amount of outdoor air brought in on purpose, through a controlled path instead of gaps in the attic, to dilute what the house makes on its own: cooking, cleaning, people, pets. Rooms stop feeling stale.

What it can’t doDilute a problem that never stops. Fresh air into a loop still pulling attic air is the same problem, bigger.

Where the readings call for it:
HEPA filtration
Carbon filtration for odors
Electronic air cleaner

How we decide

The assessment takes air quality readings along with the leakage test, room pressures, thermal images and photos. Source control is always first. Then the readings after the fix decide the rest: if the air tests clean with the right filter in place, that is the recommendation. Treatment is added when the circulating air still needs it; fresh air when the house itself is the remaining source.

Checked before any of them

Return pathways and the return-side leakage number
Every supply run: jacket, insulation, liner; torn or detached sections
Attic top plates and bypasses with thermal imaging
Filter and grille sizing against the system, so a deeper filter doesn’t starve it
Airflow and room pressure at every register and closed door
Air quality readings, so the plan knows what the air carries

Step 1 · Source Control, Ranked

Three Ways to Close the Loop

Same goal, three methods. Which one fits depends on your ducts. Most homes with attic-air symptoms need the ducts and the ceiling addressed.

Option 1 · BestInsulated Duct Armor™Sealed from the outside at every joint, boot and seam, then the whole run encapsulated. Stops attic air getting in and attic heat soaking in.Insulated Duct Armor™ Option 2 · Next bestAerosealSealed from the inside, where foam can’t reach. Verified by the Aeroseal machine’s own test. Seals only.Air Seal Services Option 3 · The ceilingInsulated Attic Armor™Closed-cell foam at the top plates, boots and penetrations. Stops the bypasses that drop attic air into walls, rooms and the garage path.Insulated Attic Armor™

See the three methods animated

Which Concern Is This For

What Indoor Air Quality Work Solves

Source control, then filtration, treatment and fresh air, only when the readings call for them.

Concern 6Indoor Air QualityDust, attic smell, filters that load fast, rooms that never feel fresh.See the concern Concern 7Safety + Moisture ManagementGarage fumes indoors; bath, kitchen and dryer exhaust routed outside instead of into the attic.See the concern Concern 1Duct System ConditionFailed jackets and torn liners are openings into the loop; staged and fixed first.See the concern Concern 5Home + HVAC System PerformanceReturn leaks make the system cool attic air it never should have met.See the concern

Backed By

Measured at the Source, Guaranteed in Writing

Duct leakage and air quality readings are taken in every assessment, before anything is recommended. The sealing work can carry the Energy Savings guarantee, chosen with a target you set, plus the 20-year labor workmanship warranty on every job.

Measured first

Leakage, room pressure and air quality readings

If the readings say the filter is enough, we say so. If they say more is needed, you see the numbers that say so.
Energy Savings Guarantee

You pick the savings

“Your system uses less energy after our improvements, by the amount you choose.”
Also on every job

20-year labor workmanship warranty

Separate from the guarantees, which are about the result.

How each guarantee is backed How your package is built

Questions

Indoor Air Quality, Answered

Will a better filter fix the dust?

Only if the dust is coming through the filter. Most of the time it is coming in after the filter, through return leaks, open boots and top plates. Seal those first and the filter you already have starts working.

Do I need PuriFi?

Only when the readings after source control and the right filter say the circulating air still needs treatment. Added first, it treats a problem that refills itself.

What is Fresh Air Ventilation?

A controlled amount of outdoor air brought into the system on purpose, so the house is refreshed through a filtered path instead of through gaps in the attic. It dilutes what the house makes on its own.

Do you test the air?

Yes. Air quality readings are part of the assessment, alongside the leakage test split by supply and return, room pressures and thermal images. Plans that include verification testing repeat them after the work.

What about HEPA or carbon filtration?

HEPA goes in where the readings call for the finest filtration; carbon where odors are the issue. Both are sized against the system so a deeper filter doesn’t starve it, and neither comes before the loop is closed.

Why not just sell me a purifier?

Because every air-cleaning product works only on the air that reaches it. You will not be sold a filter, a purifier or a ventilation system to fight a leak that costs less to seal.

Google Reviews

What Valley Homeowners Say About Knights of the Attic

    
 
 
       Posted on Google  
   
   Chuck D 
 
 
 
 Trustindex verifies that the original source of the review is Google. Damien Mendez at Knights of the Attic did an awesome job balancing our cooling system after the attic portion of the work was complete. Listened to us and made adjustments based on our issues/ needs. Thank you!
  
 
      Posted on Google  
   
   Laura H 
 
 
 
 Trustindex verifies that the original source of the review is Google. Every single one of their employees was personable, polite, punctual, and tidy. We had experience with Nick, Antonio, Jovan, Miguel, and Noah.
Our house is significantly more comfortable. Our master suite is at the far end of the house and used to be 10 to 15° warmer than the rest of the home. We are sleeping so much better, thanks to Knights of the Attic! Highly recommend!
  
 
      Posted on Google  
   
   Johnny G 
 
 
 
 Trustindex verifies that the original source of the review is Google. We have had a hot room upstairs since we moved in over a decade ago.  Numerous AC companies told us different things, no solutions.  These guys came out and fixed the airflow, sealed it up and everything is great now.  I wish I called sooner honestly.
  
 
      Posted on Google  
   
   Brian D 
 
 
 
 Trustindex verifies that the original source of the review is Google. Knights of the Attic technician, Shane Ratliff did an outstanding analysis of our ductwork system and made recommendations for us. Shane was very knowledgeable, professional and personable!
  
 
      Posted on Google  
   
   Lauren P 
 
 
 
 Trustindex verifies that the original source of the review is Google. One amazing company amazing owner
  
 
      Posted on Google  
   
   Rhonda B 
 
 
 
 Trustindex verifies that the original source of the review is Google. Shane was awesome explaining everything that was wrong & showing us everything that needs to be done! I highly recommend Shane & Knights of the Attic for the job!!!
  
 
      Posted on Google  
   
   Loren O 
 
 
 
 Trustindex verifies that the original source of the review is Google. Shane did a great job explaining the process of insulating the house and garage attic to me. I have a better understanding of the process and goals set.
  
 
  
  
 
 
     Verified by Trustindex  Trustindex verified that these reviews were published on Knights of the Attic's Google Business Profile. Learn more