How fast can you repair my AC?

Most AC repairs across Marin and Sonoma are booked and completed the same day, with, during heat waves.

Should I repair or replace my AC?

If your system is over 10–12 years old, uses R-22 refrigerant, or needs a costly repair, replacement usually pays off in lower bills. We’ll give you an honest recommendation, not a hard sell.

Do you install ductless mini-splits?

Yes. Mini-splits are ideal for homes without ducts, additions, and ADUs, and most qualify for utility rebates we file for you.

What size AC do I need?

We run a Manual-J load calculation based on your home’s size, insulation, and orientation, not a rule of thumb, so your system isn’t over- or under-sized.

4.8 (200+ reviews)

HVAC Services in Marin County

Repair, installation, and maintenance. One crew for your whole home from one local family. Heating, air conditioning, custom sheet metal, and indoor air quality for Marin homes and businesses, family-owned with our own Novato fabrication shop since 1960.

Call Now(415) 897-4187

Air Conditioning Cool. Efficient. Reliable. Heating Warm. Comfortable. Safe. Sheet Metal Custom. Durable. Built Right.

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Same-day callback, no obligation. Real Marin techs, since 1960.

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Licensed & InsuredCA Lic. #278370Fully bonded & insured

BBB AccreditedBetter Business BureauA+ Rating

NATE CertifiedNorth American Technician Excellence

Novato ChamberProud community chamber member

SMACNA MemberSheet Metal & AC Contractors’ National Assn.

All Services

Every HVAC and sheet metal service, one local crew

AAERO HVAC service van outside a Novato home with central air ducted vents and smart thermostat

AAERO HVAC restaurant cutaway showing high-efficiency cooling

AAERO HVAC residential cutaway showing ductless mini-split zones

AAERO HVAC theater cutaway showing whole-house zoning

AAERO illustrated home cutaway showing furnace heating airflow through ductwork to a smart thermostat

Illustrated Aaero technician servicing a residential furnace install in Marin County

Illustrated Aaero technician scheduling a Marin HVAC maintenance tune-up visit

Illustrated Aaero technician swapping a clean indoor air quality filter during a Marin maintenance visit

AAERO custom sheet metal duct fabrication for Marin commercial kitchen and rooftop HVAC

AAERO air duct cleaning illustration showing supply, return and plenum in a Marin home

AAERO commercial HVAC rooftop unit and ductwork for Marin businesses

Illustrated Aaero technician explaining UV germicidal light upgrades to a Marin homeowner

The Aaero Difference

One Marin crew for every HVAC service your home needs

Aaero has handled every part of residential and light commercial HVAC since 1960, AC, heating, ductwork, sheet metal, indoor air quality and maintenance, under one roof, on one schedule, with our own Novato fab shop behind every job.

AAERO HVAC technician diagnosing a home air conditioning system with a multimeter before quoting an upfront repair estimate

01, One Crew, Every System

Heating, cooling, ductwork and air quality, all in one visit.

Most Marin HVAC contractors send a different crew for the furnace, the AC, and the ductwork. Our techs are licensed C20 and C43 and work on the whole system in a single visit, so we can diagnose a heating problem that's really a duct issue, or pair a heat pump install with the right return-air sizing the day we plan it.

HVAC and sheet metal under one licenseC20 and C43, since 1960.
One scheduler, one invoiceNo coordinating between three trades.
Single-visit diagnosticsWe catch what a one-trade contractor misses.

AAERO HVAC technician arriving to service an outdoor air conditioning condenser at a Marin County California home

02, Our Own Novato Shop

Custom ductwork built in-house, not ordered from a catalog.

Aaero owns the sheet metal shop in Novato that fabricates plenums, transitions and one-off ductwork for our installs. That lets us size return air, supply runs and zoning custom ductwork to your home instead of shoehorning a system into off-the-shelf parts and hoping it performs.

In-house fabricationPlenums, hoods, transitions, registers, built to spec.
Same-week turnaroundNo three-week lead time on custom parts.
Right-sized airflowQuieter rooms, balanced temperatures.

Family-owned Aaero technician reviewing an HVAC service estimate with a Marin County homeowner

03, Residential and Light Commercial

Single-family homes through 30-ton rooftop units.

We do the residential HVAC work most Marin homeowners need, and we also handle light commercial HVAC for restaurants, offices and multi-tenant buildings across Marin and Sonoma. The same crew, the same shop, the same C20 and C43 license #278370 covers it all.

Residential HVACRepair, replace, maintain, every brand.
Light commercial HVACRooftop units, kitchen makeup air, ventilation.
Same crew, every jobNo subcontractors, no learning curve.

Get an HVAC quote

Novato HVAC · AC & Heating Service · Since 1960

HVAC in Novato, CA

Novato HVAC Services

Call Aaero Heating & Sheet Metal at (415) 897-4187 for AC and heating service across Novato, CA. Our crew handles AC installation, AC repair, air balancing, heating repair and installation, indoor air quality, maintenance, water heaters, and whole-house zoning, every HVAC service a Novato home needs, under one local roof.

Illustration of an Aaero HVAC van at a Novato home with central air conditioning, ductwork, and a smart thermostat

HVAC Repair in Novato

Picking a home services company you can trust takes work. Aaero Heating & Sheet Metal has handled heating and cooling for homes across Marin and Sonoma counties, and our reputation rests on straight pricing and clean installs. We quote costs up front, so you know what an AC installation or a heating repair runs before we start, no hidden fees and no surprises on the invoice. Every technician on our crew trains to the standards we set for diagnosis, install and repair, which means the person at your door can fix the problem on the first visit.

An HVAC system that goes too long without service will break down eventually. A worn capacitor, a clogged condensate line, a failing blower motor, any one of these can leave you without heat in January or without cooling in August. When that happens, our Novato HVAC repair team gets your system running again fast.

Book Novato HVAC repair

Illustrated Aaero technician swapping a clean HVAC filter during a Novato maintenance visit

Why hire a professional HVAC contractor

A do-it-yourself fix on a furnace or an air conditioner usually costs more than it saves. A trained HVAC contractor gives you three things a weekend repair cannot:

Time back. We diagnose and repair in one visit instead of days of trial and error.
A longer-lasting system. Routine maintenance on your HVAC unit or water heater adds years of service life and helps protect the manufacturer warranty.
A safer home. A cracked heat exchanger or a bad gas connection is a real hazard, and we catch it before it turns into one.

Neglected heating and cooling equipment does more than run up your energy bill. Furnace faults start fires, and a failing system puts your whole household at risk. Regular service keeps the equipment safe and your home comfortable through every Novato winter and summer. Call Aaero Heating & Sheet Metal at (415) 897-4187 to book AC repair, heating installation or a maintenance visit in Novato.

See our maintenance plans

Everything for Your Home

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HVAC Services in Marin County

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Every HVAC and sheet metal service, one local crew

One Marin crew for every HVAC service your home needs

Heating, cooling, ductwork and air quality, all in one visit.

Custom ductwork built in-house, not ordered from a catalog.

Single-family homes through 30-ton rooftop units.

Novato HVAC Services

HVAC Repair in Novato

Why hire a professional HVAC contractor

All Residential HVAC Services

AC Repair

AC Installation

Heating Repair

Heating Installation

Mini-Split Installation

Whole-House Zoning

Indoor Air Quality

Duct Cleaning

Maintenance Plans

Custom Sheet Metal