Same-day A/C repair, heating service, and Mitsubishi ductless mini-split installation across San Elijo Hills, Lake San Marcos, Twin Oaks and all of San Marcos. Honest, upfront pricing from a licensed local team.
Your San Marcos comfort team
Locally owned and operated since 2021, serving North County every day.
From the hillside new builds of San Elijo Hills to the established homes around Lake San Marcos, inland North County gets hot and dry in summer. We right-size and repair systems for the way your part of San Marcos actually lives.
Not cooling, short-cycling, or making noise? We diagnose and fix it fast, with honest pricing.
Right-sized, high-efficiency systems installed cleanly — most in a single day.
Mitsubishi Diamond Contractor installs — efficient, quiet, room-by-room comfort with no ductwork.
Furnace and heat pump repair and tune-ups to keep those cool nights comfortable.
Efficient all-in-one heating and cooling — repaired, maintained, and installed by specialists.
Cleaner air and better airflow — duct repair, sealing, and indoor air quality upgrades.
From San Elijo Hills to Lake San Marcos, we're never far from your door.
Call, text, or book online any time. A real local technician answers — any hour.
We arrive on time, inspect top to bottom, and find the real root cause.
A clear, flat-rate price before any work begins. No surprises, no pressure.
Most repairs done in one visit, backed by our satisfaction guarantee.
"Showed up same day, gave me an honest quote, and had cold air flowing within the hour. This is how service should be."
Ann N."Amazing deal and quality work. We had a Mitsubishi mini-split installed — done in less than a day. Couldn't be happier."
Paul P."Our AC wasn't working and Alex was very responsive — repaired it very quickly. I highly recommend AIM for HVAC."
Richard M.Talk to a real local technician today. Same-day appointments, 24/7 emergency service, and honest pricing across North County.
Book online in under a minute, or call and we'll pick up.
Licensed & insured · CSLB C-20 #1074324 · Mitsubishi Diamond Contractor
