Los Angeles · Serving the Westside since 1987

Perfect air is invisible. So are we.

Aurelius Air engineers whisper-quiet, precision climate systems for Los Angeles' most demanding homes and commercial spaces. You'll never hear us arrive, and you'll never notice the temperature again.

Schedule a Private Consultation Our Process

★★★★★4.98 / 5 · 2,300+ ReviewsGoogle & Yelp Verified

NATE-CertifiedEvery technician, no exceptions

$5M InsuredBonded · CA Lic. #1087243

38 YearsFamily-owned in Los Angeles

Daniel Hartwell, Founder of Aurelius Air

Daniel Hartwell — Founder, Aurelius Air

Live · Los Angeles Conditions

84^°F

Humidity 31%AQI 62 · ModerateUV 9 High

90-Minute Emergency ResponseGuaranteed, county-wide, day or night.

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Capabilities

Engineered for how
you actually live.

From 12,000-sq-ft hillside estates to Class-A commercial towers, every Aurelius system is designed, installed, and maintained by the same master technicians — never subcontracted, never rushed.

Estate Climate Design

Fully zoned, architect-coordinated systems for luxury residences — invisible linear diffusers, silent variable-speed equipment, whole-home humidity control.

Precision Installation

Manual J/S/D load calculations on every project. We size to the decimal, seal to the standard, and commission with laboratory-grade instrumentation.

Air Quality & Purification

Hospital-grade MERV-16 filtration, UV-C sterilization, and wildfire-smoke defense systems — measured, monitored, and verified with real-time IAQ sensors.

Commercial & Mechanical

Design-build mechanical contracting for boutique hotels, studios, medical suites, and Class-A office — with guaranteed uptime SLAs and 24/7 monitoring.

Smart Home Integration

Native integration with Crestron, Savant, Lutron, and Control4. Room-by-room climate scenes that follow the sun, your schedule, and your preferences.

White-Glove Maintenance

Twice-yearly 41-point precision tune-ups by the same dedicated technician, with shoe covers, floor runners, and a written performance report every visit.

Micro-Climate17Zones Mapped

Living in the LA Climate

One city.
Seventeen climates.

Los Angeles is not one climate — it's a mosaic. The marine layer that cools Santa Monica at 9 a.m. never reaches Encino, where the Valley is already pushing 96°. Canyon homes fight humidity swings; hillside glass walls turn afternoon sun into a furnace; October brings Santa Ana winds and wildfire smoke that ordinary filtration simply cannot stop.

A system designed for "Los Angeles" fails everywhere in Los Angeles. That's why every Aurelius design begins with your specific micro-climate — solar exposure modeling, marine-layer patterns, elevation, and the architecture itself — before a single duct is drawn.

Westside & Coastal — Malibu to Marina del Rey
Marine Layer
Salt-air corrosion protection, dehumidification, and systems that handle 20° swings between fog and sun.
The Valley — Sherman Oaks to Calabasas
Extreme Heat
High-capacity, high-SEER cooling engineered for 110°+ summers without the energy bill to match.
Hills & Canyons — Bel Air, Hollywood Hills
Solar Load
Zoned control for glass-heavy architecture, plus wildfire-season smoke sealing and MERV-16 defense.
Downtown & Commercial Core
High-Rise
VRF systems, rooftop packages, and mechanical retrofits for historic and Class-A properties alike.

The Aurelius Standard

Trust isn't claimed.
It's certified.

Every credential below is held by the company and by each individual technician who enters your home. We publish our license numbers because we have nothing to hide — and everything to prove.

NATE Certified

North American Technician Excellence — the industry's highest technical credential, held by 100% of our field team.

All 24 Technicians

EPA 608 Universal

Federally certified for the safe, lawful handling of all refrigerants across every system class we service.

Universal Level

BBB Accredited · A+

Accredited since 1994 with an A+ rating and zero unresolved complaints in our entire company history.

Since 1994

Diamond Certified

Independently rated Highest in Quality & Helpful Expertise for 11 consecutive years of customer research.

11 Consecutive Years

The Comfort-Perfect Guarantee

If your new system doesn't hold every room within 2°F of setpoint, we re-engineer it at our expense — or remove it and refund every dollar. In writing.

The On-Time Promise

We arrive inside your scheduled window or your service call is free. Our 12-month on-time rate: 99.4% — and we publish it quarterly.

The White-Glove Standard

Background-checked, badge-carrying technicians. Floor runners, shoe covers, and a home left cleaner than we found it — photographed and verified.

Angi Super Service Award2019 – 2025

Best of Los AngelesLA Magazine · 2024

Carrier President's AwardFactory-Authorized Elite

EnergyStar PartnerSustainability Excellence

The Aurelius Method

Five steps.
Zero surprises.

Most contractors sell equipment. We deliver a documented engineering process — the same discipline whether it's a condo mini-split or a 40-ton estate plant.

Step 01

Private Consultation

A senior comfort engineer — not a salesperson — walks your property, listens to how you live, and documents every room's issues, from that stuffy office to the bedroom that never cools.

90 MinutesNo ObligationSenior Engineer

Step 02

Diagnostic & Load Engineering

Thermal imaging, duct-leakage testing, static pressure mapping, and full Manual J/S/D calculations. We measure what others guess — then show you the data.

Thermal ImagingManual J/S/DIAQ Baseline

Step 03

Transparent Proposal

Three engineered options at fixed, to-the-penny pricing. Every line item explained in plain English. The price we quote is the price you pay — guaranteed in writing.

Fixed Pricing3 OptionsFinancing Available

Step 04

White-Glove Installation

Floor protection down before a single tool comes out. A dedicated crew, a daily progress briefing, and a project manager whose cell number you keep.

Dedicated CrewDaily BriefingsClean-Site Protocol

Step 05

Commissioning & Lifetime Care

Laboratory-grade commissioning verifies every zone to within 2°F. You receive a full performance dossier — then our Meridian team quietly keeps it perfect for life.

±2°F VerifiedPerformance DossierLifetime Support

Leadership

The people behind
the precision.

Daniel Hartwell

Founder & Chief Executive

Started Aurelius Air from a single van in Culver City in 1987. Still personally reviews every estate commissioning report — all 12,400 of them so far.

C-20 License HolderASHRAE Member

Elena Vasquez, P.E.

Chief Engineer

Former aerospace thermal engineer who now applies flight-grade tolerances to residential comfort. Architect of our 17-zone LA micro-climate model.

Licensed P.E.LEED APNATE Sr. Level

David Chen

Director of Client Experience

Fifteen years in five-star hospitality before joining Aurelius. Believes a service visit should feel like room service: punctual, polished, invisible.

White-Glove Program Lead24/7 Response Cmd.

Client Voices

In their words.

“

Three contractors told us our glass-walled living room was "impossible to cool quietly." Aurelius engineered it to a whisper. Six months in, I genuinely forget the system exists — which I've learned is the entire point.

Sarah LindqvistHomeowner · Pacific PalisadesVerified Client · Estate Install, 2025

“

We manage forty-one luxury units in Beverly Hills. Aurelius is the only vendor in eleven years whose work I've never once had to re-inspect. Their commissioning dossiers are better documented than our legal files.

Jonathan ReyesProperty Director · Castellan Hotel GroupVerified Client · Commercial Portfolio

“

During the January fires, their team installed emergency smoke filtration for my parents within five hours of my call — then followed up every day for a week. That is not a contractor. That is a guardian.

Priya AnandHomeowner · Studio CityVerified Client · Air Quality Program

“

The proposal alone was worth the consultation — thermal images, room-by-room data, three fixed prices. After decades of contractor hand-waving, Aurelius felt like hiring an engineering firm that happens to be lovely to have in your home.

Michael OseiHomeowner · Hancock ParkVerified Client · Full System Replacement

★★★★★ 4.98 on Google · 1,400+ reviews ★★★★★ 5.0 on Yelp · 900+ reviews ★★★★★ A+ BBB · 0 unresolved complaints

Members Only

The Meridian Plan.
Comfort, managed for life.

Our concierge membership quietly maintains your system to factory-perfect condition — so the only thing you ever notice about your climate is that you never notice it. Limited to 500 member households to preserve response times.

$49/ month · cancel anytime

Reserve Your Membership

Two 41-point precision tune-ups per year, same dedicated technician
Front-of-line 24/7 emergency dispatch — 90-minute guarantee
15% member pricing on all repairs, parts, and upgrades
Annual air-quality audit with wildfire-season filter program
Never a dispatch fee, overtime charge, or holiday surcharge
Transferable to your home's next owner — a genuine selling point

Service Territory

Where we serve.

Deliberately focused on greater Los Angeles — dense enough coverage to guarantee our 90-minute emergency response everywhere we work.

Beverly Hills 90210
Bel Air 90077
Malibu 90265
Pacific Palisades 90272
Santa Monica 90402
Brentwood 90049
Hollywood Hills 90068
Hancock Park 90004
Studio City 91604
Sherman Oaks 91423
Calabasas 91302
Manhattan Beach 90266
Downtown LA 90013
Pasadena 91105

Common Questions

Answered, honestly.

Ninety minutes or less, anywhere in our territory, 24/7/365 — including holidays. It's a written guarantee, not a slogan: we station on-call technicians in three zones across the county precisely so we can keep it. Our 2025 average was 61 minutes.

Our proposals are often within 10–15% of mid-market bids — the difference is what's inside them. Fixed-to-the-penny pricing, genuine load engineering, master-level installers, and commissioning verified to ±2°F. Clients tell us the system that's still perfect a decade later was the least expensive one they ever bought.

A W-2 Aurelius employee — never a subcontractor. Every technician is NATE-certified, background-checked annually, badge-carrying, and photographed in your appointment confirmation so you know exactly who to expect at your door.

It's our specialty. We routinely coordinate with architects, interior designers, and AV integrators from schematic design onward — concealed linear diffusers, acoustic isolation, and native Crestron, Savant, Lutron, and Control4 integration are standard practice for our estate division.

Meridian members receive proactive smoke-defense preparation each September: MERV-16 filter staging, envelope sealing checks, and priority standby. During active smoke events we run extended dispatch hours and maintain an emergency filtration inventory reserved exclusively for members.

Yes — 0% APR programs up to 24 months and extended terms to 120 months through our lending partners, with approval in minutes. We also handle every rebate for you: federal tax credits, SCE, LADWP, and SoCalGas incentives are applied directly to your proposal.