Independent air and water audits for brownstone Brooklyn families. We measure every room with professional‑grade instruments, explain what the numbers mean, and hand you a prioritized plan. We sell nothing else.
Founding cohort — eight homes · $395 · payment after your audit, nothing today
Professional‑grade instruments, real‑life conditions, and the two tests that matter most in a Brooklyn home: what happens when you cook, and what happens while your kids sleep.
The pollutant that matters most for lungs — from cooking, candles, traffic, and smoke days. We map it room by room against EPA and WHO benchmarks.
CO₂ tells you whether fresh air is actually reaching a room. We leave a silent, palm‑sized logger in your child's bedroom overnight — no camera, no microphone — and read the night.
We run your range while the counter runs. You watch what your hood really captures — and what it doesn't — then we fix the habit or spec the upgrade.
The 30–50% band is where dust mites lose and sleep wins. We find the rooms that drift out of it and size the fix.
We check your HVAC filter rating, size any purifier to the actual room (not the marketing page), and place it where it works. Plus a CO and smoke‑alarm check, free.
First‑draw and flush samples from your kitchen tap, analyzed for lead and copper by a NYS ELAP‑certified laboratory. The gap between the two samples tells us whether any lead is your fixture — or your line.
Within three days you get a written report you'll actually read: your numbers against the benchmarks, in plain English, with a fix list ordered by cost — starting at $0. If everything's fine, it says so. “Your air is good” is a real result, and arguably the best one.
Room‑by‑room results with the benchmark next to every number, so you never have to guess whether 12 is good.
Two simple charts: your child's room overnight, and your kitchen during the cooking test. You will be tempted to frame these.
Prioritized by impact and cost: free habit changes first, then sub‑$150 fixes, then the one or two things worth investing in — with exact specs and who to call.
| A $200 monitor | A “free” inspection | Brownstone Air | |
|---|---|---|---|
| Measures every room, plus overnight | One spot, no interpretation | A walk‑through | Yes — every room, plus the night |
| Explains what the numbers mean | Charts in an app | Verbally, on the spot | A written, plain‑English report |
| Prioritized fixes with exact specs | No | A quote for their own service | Yes — starting at $0 |
| Sells remediation or products | — | That's the business model | Never. Flat fee only |
| Water lead panel (ELAP lab) | No | Rarely | Optional, +$195 |
| Cost | ~$200 | “Free” | $395, after the audit |
Nothing against monitors — we'll happily tell you which one to keep on the shelf. The difference is interpretation, coverage, and independence.
$395, stated up front, collected after the audit. No quotes, no upsells, no “while we're here.”
We recommend by spec — CADR numbers, filter ratings — never by brand kickback. Zero commissions, ever.
We don't sell the fix, so we have no reason to find a problem that isn't there — or miss one that is.
If your home needs a licensed specialist, we say so plainly and connect you. We never take referral fees.
They wake up expecting a baby, mid‑renovation, or staring at an orange sky. Start where you are:
We are an air and water screening practice. We don't perform specialist environmental testing — asbestos, lead paint, radon, and similar licensed domains — and we don't do remediation or construction. If anything we observe suggests you need a licensed specialist, we'll tell you plainly, in writing, and point you to one. We never accept referral fees, so the advice stays clean.
If your report doesn't tell you something about your home you didn't know, it's free.
Brooklyn‑based, I started Brownstone Air after one too many allergy and wildfire seasons spent staring at the air‑quality monitor in my own apartment, obsessing over how to make my home healthy. This practice is independent by design: I don't sell anything except the audit itself — no products, no remediation — and I'm happy to make recommendations based on what's actually worked in my own home.
Founding cohort means you're one of my first clients. You'll get some of the most careful (and affordable!) audits I will ever do — and you're welcome to shadow the whole visit; it's the best part. I'm on a mission to make brownstones healthier for all families in Brooklyn.
About 90 minutes, and yes — one adult home, please. You're welcome — encouraged, honestly — to shadow the entire audit and ask everything as we go. It's half the value.
Please don't. We're measuring air, not housekeeping — and lived‑in conditions give truer readings than a staged apartment. We wear shoe covers, we don't open drawers, and we never photograph anything without asking.
Please — normal life is exactly the condition we want to measure. If nap time falls mid‑audit, we sequence the rooms around it.
A palm‑sized, battery‑powered CO₂/temperature/humidity logger. It is silent, has no camera and no microphone, and doesn't need your Wi‑Fi. We pick it up the next day — or one day later, if your overnight earns an included retest night — and the data goes straight into your report.
Very. Most of what moves the needle is behavioral or portable — ventilation habits, filter choices, purifier sizing and placement — and your report flags which recommendations are renter‑safe versus building‑level. If the building controls the fix, we write it up so you can hand it to your landlord or board.
Those are licensed specialist domains, and we stay in our lane. We screen air and water. If anything we observe during your audit suggests a specialist inspection is warranted, we'll say so plainly, put it in writing, and refer you to licensed professionals. We never take referral fees.
Then you'll know — in plain language, with a prioritized plan and no scare tactics. Most findings are fixed by habits and sub‑$150 changes. If something needs a specialist, we tell you who to call, and because we don't sell the fix, you can trust the finding.
Then the report says so, tells you how to keep it that way, and you sleep better — literally, if the nursery data says what it usually says. “Your air is good” is a real result. And if the report doesn't tell you a single thing you didn't know, it's free.
$395, after your audit — card or check, whatever's easy. The water panel adds $195 if you want it. Nothing is due when you request or book. Founding pricing ends when the eight September slots are done.
Yes — Brownstone Air carries general liability insurance, as anyone entering your home professionally should. Happy to show the certificate on request.
Yes. Your readings and your address are yours. We never sell or share data, and your findings appear in our anonymized sample materials only if you say so.
Request a slot, and Andy will call within 48 hours to find a September time that works. Ten minutes, no payment, no pressure.
$395 · payment after your audit · founding cohort only