Indianapolis's Trusted HVAC Company — Honest Work, Fair Prices, 30+ Years of Experience
CSO Mechanical LLC provides HVAC repair, installation, and maintenance for homeowners and businesses across Indianapolis and the surrounding area. When your heat goes out in January or your AC quits in July, we pick up the phone.
WHO WE ARE
Locally Owned. Indianapolis Proud.
CSO Mechanical LLC is an Indianapolis-based HVAC/R company founded on one principle: treat every customer the way you'd want your own family treated. Owner Chris O'Hern has spent more than 30 years in the heating and cooling trade, and he still shows up personally to make sure the job is done right.
We work with homeowners and business owners throughout Indianapolis, Carmel, Fishers, Noblesville, Westfield, Avon, Greenwood, and the surrounding communities. Whether you need a same-day AC repair or a full system replacement, you'll get a straight answer, a fair price, and a technician who takes pride in his work.
No call centers. No runaround. Just honest HVAC service from a team that knows Indianapolis.
SERVICES OVERVIEW
HVAC Services Built Around You
We handle the full range of residential and commercial HVAC/R needs — from emergency repairs to planned installations and preventive maintenance. Click any service below to learn more.
Is your air conditioner blowing warm air, cycling on and off, or not turning on at all? We diagnose and repair all makes and models — fast.
Learn About AC Repair
Don't tough out a cold Indiana winter with a struggling furnace. We'll pinpoint the problem and get your heat back on, often the same day you call.
Learn About Furnace Repair
HVAC Installation Indianapolis
Replacing an older system or installing HVAC in a new space? We help you choose the right equipment for your home or building and install it properly the first time.
Learn About HVAC Installation
A well-maintained system runs more efficiently, lasts longer, and breaks down less often. Our maintenance plans keep you ahead of problems before they become expensive repairs.
Learn About Maintenance
WHY CHOOSE US
Why Indianapolis Homeowners and Businesses Choose CSO Mechanical
When you hire CSO Mechanical LLC, you're not calling a franchise or a 1-800 dispatch line. You're working directly with an experienced local technician who stands behind every job.
30+ Years of Experience — Chris O'Hern has seen and fixed virtually every HVAC problem imaginable. That depth of experience means faster diagnosis and fewer return visits.
Licensed, Bonded, and Insured — You're fully protected on every job. We carry all required licensing and insurance so you never have to wonder.
Residential and Commercial — We work with homeowners, landlords, property managers, and business owners. If it heats or cools a space, we can service it.
Straightforward Pricing — No surprise fees, no inflated quotes. We tell you what the job costs before we start, and we stick to it.
Locally Rooted in Indianapolis — We live and work in the same communities we serve. Our reputation in Indianapolis matters to us — and we protect it with every call.
Responsive and Reliable — When you call CSO Mechanical, someone answers. We respect your time and show up when we say we will.
A Message From Our Owner
"I started CSO Mechanical because I believed there was a better way to do this work — one where the customer always gets a fair deal and a technician who actually cares about the outcome. More than 30 years later, that hasn't changed. Every job I take on, I ask myself: would I be happy if this was done in my own home? If the answer is yes, we're done right." — Chris O'Hern, Owner, CSO Mechanical LLC
A Word From Chris
Ready to Schedule Service?
Whether your system just broke down or you want to get ahead of the next season, CSO Mechanical LLC is ready to help. Indianapolis and the surrounding area — we've got you covered.
Call us directly: (317) 372-1608
Or use our contact form: Request Service
Licensed. Bonded. Insured. Serving Indianapolis and surrounding communities.