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)

Air Conditioning Repair & Installation in Marin County

Get your AC fixed before the heat hits. Same-day AC repair, high-efficiency central air installs, and ductless mini-split systems, trusted by Marin homeowners 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.

Air Conditioning

Every cooling 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

The Aaero Difference

65 years of honest HVAC in Marin County

No upsells, no runaround, just honest AC repair, right-sized cooling installs, and ductless mini-splits from the same family-owned Marin County crew, trusted since 1960.

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

01, Honest Diagnostics

We find the real problem, then quote it.

When your AC won't cool, our certified technicians find the real cause, low refrigerant, a failing capacitor, a tired compressor, and hand you a clear, written estimate before any work begins. No guesswork, no surprise add-ons, just an honest answer.

Written, upfront estimatesYou approve the price before we start.
No-pressure recommendationsWe tell you what's urgent and what can wait.
Honest repair-or-replace adviceWe fix what's worth fixing.

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

02, Right-Sized Comfort

Comfort sized for your home, not upsold.

20%lower energy bills
after a right-sized install

We measure your space and load, then install a system that's the right capacity. A properly sized HVAC system runs quieter, lasts longer, and costs less to run every month.

Load-calculated sizingNo oversized, short-cycling equipment.
High-efficiency systemsModern SEER2 & variable-speed options.
Smart-thermostat readyControl your comfort from anywhere.

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

03, Family-Owned Care

Three generations of Marin trust.

The same family crew has kept North Bay homes cool through Marin's hot inland afternoons since 1960. Licensed, fully insured, and backed by a workmanship guarantee on every AC repair and install we do.

Licensed #278370 (C20 · C43)Factory-trained on every major brand.
Workmanship guaranteeWe stand behind every repair and install.
Fast schedulingSame-day & next-day across Marin.

Talk to our family team

Marin and Sonoma County HVAC installation since 1960

Reliable AC repair, installation, and cooling upgrades for North Bay homes

Marin’s microclimates change block by block, from the foggy coast in Stinson Beach to the inland heat in Novato and San Rafael. For more than sixty years Aaero has cooled North Bay homes with right-sized central air, ductless mini-split systems, and high-efficiency heat pumps that match how each house actually lives. Every visit starts with a real diagnosis, not a sales pitch, and every quote is written so you know exactly what you’re paying for before we lift a tool.

Illustration of an Aaero HVAC van and a Marin County home with central air conditioning, ductwork, and a smart thermostat set to 72 degrees

AC Repair

Same-day AC repair across Marin and the North Bay

When a Marin heat wave pushes inland temperatures past ninety degrees, a stalled compressor or a frozen evaporator coil is more than an inconvenience. Aaero answers AC repair calls the same day across Novato, San Rafael, Mill Valley, Corte Madera, and the Ross Valley, with fully stocked trucks that carry the capacitors, contactors, refrigerant, and motors your system is most likely to need. Our technicians are factory-trained on Carrier, Trane, Lennox, Bryant, Goodman, Rheem, and Mitsubishi Electric ductless units, so we fix it right the first time instead of guessing on the second visit.

See our AC repair service

Aaero AC service infographic: tune-up reminder, system inspection, and improved efficiency to keep your Marin home cool all summer

High-efficiency AC installation sized to your home

An oversized air conditioner cycles too fast to pull humidity out of a Marin summer, while an undersized one runs all day and never quite catches up. We start every AC replacement and installation with a Manual J load calculation that accounts for square footage, insulation, window orientation, shading, and Marin’s cool nights, so the system we install is the system your home actually needs. Aaero installs SEER2-rated central air conditioners and inverter-driven heat pumps from Carrier, Trane, and Mitsubishi, and we register every unit for the full ten-year parts warranty so you’re covered for the long haul.

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Everything for Your Home

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Air Conditioning Repair & Installation in Marin County

Get your free AC quote

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Every cooling service, one local crew

65 years of honest HVAC in Marin County

We find the real problem, then quote it.

Comfort sized for your home, not upsold.

Three generations of Marin trust.

Reliable AC repair, installation, and cooling upgrades for North Bay homes

Same-day AC repair across Marin and the North Bay

High-efficiency AC installation sized to your home

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