Skip to content 
24 Hour Emergency AC Repair for Northeast Florida
Emergency HVAC Service Across Flagler, Volusia & Putnam County
A house that hits 90 degrees because the AC died is not something that can wait for Monday, and neither is a burning smell coming from your unit. SIMS answers calls 24/7 across Flagler, Volusia, and Putnam County, for both emergency cooling and emergency heating. Call us, and we’ll tell you honestly what to expect.
LET’S GET YOUR COMFORT BACK
What Counts as an HVAC Emergency
Not every AC problem needs a technician at 2 a.m., and we’ll tell you that honestly instead of scaring you into an after-hours visit you didn’t need. But some things genuinely can’t wait: no cooling at all during extreme heat, a burning smell, water actively leaking inside the house, or no heat at all with vulnerable family members in the home.
We answer calls 24/7 across our full coverage area. After-hours visits may include an additional fee, and we’ll explain that clearly before a technician heads out, not after.
A no-cooling call in the middle of a July night isn’t the same as a routine repair, and we treat it that way. This page exists so that when something genuinely can’t wait, you’re not stuck reading through service pages trying to figure out what to do.
get in touch
Signs You Need Emergency HVAC Service
AC Stopped Working in the Middle of the Night
If the house is heating up fast and it’s the middle of a Florida summer night, that’s exactly what this line is for. Don’t wait until morning if the heat is climbing fast.
AC Died and House Is 90 Degrees
Extreme indoor heat is a real comfort and safety concern, especially for kids, older family members, and pets who can’t just tough it out until a regular appointment opens up.
Burning Smell From the AC Unit
Turn the system off and call us. This is one of the few HVAC issues that genuinely shouldn’t wait, even a few hours, since it can point to an electrical problem.
No Heat in the House Tonight
Less common in Florida, but a real emergency on a cold night, especially for older family members or very young kids in the house.
Weekend AC Failure
Water Actively Leaking Inside
Emergency Services We Provide
After-Hours AC Repair
Diagnosis and repair outside normal business hours for cooling emergencies.
After-Hours Heating Repair
Emergency heating repair for the rare Florida cold night when it genuinely matters.
Weekend HVAC Service
Saturday and Sunday calls are answered the same as any weekday.
Emergency Diagnosis & Triage
Sometimes what feels like an emergency has a simple fix. We’ll help you figure out over the phone whether it truly needs a same-night visit.
Why Call SIMS for an Emergency
You Speak With Someone Who Understands HVAC
Honest About What Can Wait
Clear Pricing Before We Come Out
We Actually Answer
Backed by Our Guarantee
What to Expect When You Call
Tell us what your system is doing. We’ll ask a few questions to understand whether it’s truly urgent, explain what an after-hours visit involves, including any additional fees, and give you a realistic idea of timing before committing you to anything.
If it’s something that can reasonably wait until our next available appointment, we’ll tell you that too, instead of running up a bill you didn’t need. That honesty goes both ways: if it genuinely can’t wait, we won’t downplay it either.
Related Services
AC Repair, for cooling issues that can wait for regular hours.
Furnace Repair & Replacement, for heating problems.
Heat Pumps, for heat pump emergencies specifically.
Maintenance & Tune-Ups, to help prevent the next emergency.
From Emergency Repairs to Full System Installs
Whatever your system is doing, tell us. We will find the cause, explain it in plain language, and fix it right.
AC Installation & Replacement Services
New systems from trusted brands, most installed in a single day.
Furnace Repair & Replacement Solutions
Keeps your home warm when Florida cold snaps hit.
Heat Pumps
Repair, installation, and replacement for systems most NE Florida homes rely on year-round.
Ductless Mini-Splits
Single-room comfort for garages, lanais, and additions without new ductwork.
Maintenance & Tune-Ups
$89 tune-up with a 27-point inspection catches problems before breakdowns.
Indoor Air Quality
Purifiers, UV lights, filtration, and dehumidifiers for humid Florida homes.
Light Commercial HVAC
Commercial equipment experience from grocery stores to apartment complexes.
WHY NORTHEAST FLORIDA CHOOSES SIMS
Whatever your system is doing, tell us. We will find the cause, explain it in plain language, and fix it right.
Repair Before Replace
Fix or replace.
Talk to a Real Tech
24/7 HVAC support.
Aircraft-Level Precision
Detail-driven work, done right.
We Handle the Warranty
Warranties managed hassle-free.
50+ Years Experience
Decades of trusted expertise.
One-Day Installation
Quick setup, minimal disruption.
Satisfaction Guarantee
Your happiness, our promise.
LOCALLY OWNED & OPERATED
Local team. Local accountability.
Hear It From Your Neighbors
Highly recommend! Spencer quickly came out and diagnosed my problem and even went the extra step to look into warranty after the company that put the unit in would not look into anything for me. Very knowledgeable and fairly priced. I’ll contact them from here on out for all my AC needs!
- Ashton Cassidy
SIMS Heating and air installed a new unit for me last year. My A/C unit had quit and the well known carrier that i had bought the Carrier unit from wouldn’t even return my call, after being a customer for over 12 years. SIMS came through with excellent service and a great new unit.
- Robertson
My elderly mother’s 20 plus year old A/C unit decided to stop cooling. After calling some of the other A/C business, she was told there would be over a week wait. She gave SIMS a call and they had someone out that evening squeezing her in. Fantastic service and great people!
- HL Smith
If moving into a new home is not stressful enough, a finicky A/C unit added to the anxiety. Fortunately, Sims came to the rescue. Instead of the giving me the usual grunts and groans and quotes for a new unit, I got quick, efficient service that solved the problem right away.
- Mr. Bob
SIMS Heating and air installed a new unit for me last year. My A/C unit had quit and the well known carrier that i had bought the Carrier unit from wouldn’t even return my call, after being a customer for over 12 years. SIMS came through with excellent service and a great new unit.
- Sue Shamblen
Great experience. Fast reliable service. A/C system went down and the next day they were here to replace my system. Great pricing too. I have used them for A/C maintenance as well. Knowledgeable and friendly staff and on time. Lucky to find them.
- William B
Serving Homes From the St. Johns River to the Coast
SIMS serves homeowners in Flagler and Volusia counties, covering riverfront towns and coastal communities. Call us to check if we reach you.
Emergency HVAC Questions
Do you really answer calls at any hour?
Yes. We answer calls 24/7. If a technician can’t come out immediately, we’ll tell you honestly and give you the next available option instead of leaving you guessing.
How much more does an after-hours visit cost?
After-hours visits may include an additional fee, which we’ll explain clearly before dispatching a technician, so there’s no surprise on the invoice afterward.
What if it turns out not to be an emergency?
That’s fine. We’d rather talk through it honestly than have you sit worried all night, or pay for an urgent visit you didn’t need in the first place.
Do you serve every city you list?
Yes. Our emergency service covers every city in our service area, from Crescent City to Palm Coast, with the same response commitment either way.
What if I'm not sure if it's an emergency?
Call anyway. We’ll help you figure out whether it’s a same-night issue or something that can wait for a regular appointment, no pressure either way.
If you have questions, check our FAQs or give us a call. We’re here to help.