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Ductwork Installation & Repair Across Volusia, Flagler & Putnam County, FL
Air Duct Replacement & Sealing Company for Northeast Florida
One room that’s always hotter than the rest of the house, weak airflow from certain vents, or an energy bill that keeps climbing all point to the same suspect: the ductwork. SIMS installs, repairs, and seals ductwork for homes and light commercial properties across Volusia, Flagler, and Putnam County, including the older housing stock and manufactured homes common throughout our area.
LET’S GET YOUR COMFORT BACK
When Ductwork Is the Real Problem
A lot of homeowners assume a hot room or a high energy bill means the AC unit itself is failing, when the ductwork carrying that cooled air is actually the culprit. We inspect the full duct system, explain what we find, and fix the actual source instead of guessing.
We serve Palm Coast, Daytona Beach, DeLand, Deltona, Ormond Beach, and the rest of Volusia, Flagler, and Putnam County, including the rural and manufactured home stock in Putnam County, where older ductwork is common.
Older homes and manufactured housing common in Putnam County often have ductwork that was never sealed well to begin with, which means the fix isn’t always about age. Sometimes it’s about a system that was installed correctly decades ago but was never built to today’s sealing standards.
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Signs Your Ductwork Needs Attention
Rooms Hotter Than the Rest of the House
Usually means a duct run isn’t delivering the airflow that the room needs, whether from a leak, a kink, or a poor original design that never accounted for that space.
Weak Airflow From Vents
Could be a blocked or collapsed section of flexible ductwork, or a leak losing air before it reaches the vent. Both are worth checking rather than assuming the unit itself is failing.
Rising Energy Bills
Leaky ducts force your system to run longer to reach the same temperature, which shows up directly on the power bill, even if nothing else seems different.
Ducts Visible in an Attic or Crawlspace
Exposed ductwork in unconditioned spaces is more prone to leaks and temperature loss than properly enclosed duct runs, especially in older installations.
Tangled or Kinked Flexible Duct
A kinked flex duct restricts airflow just as much as a blockage, and it’s a common issue in older installations that were never inspected after the initial build.
Recent Home Addition
New square footage sometimes gets tied into old ductwork that wasn’t sized to handle the extra load, which shows up as weak airflow in the new space.
Ductwork Services We Provide
Duct Sealing
Sealing leaks at the seams and connections, the most common source of duct energy loss.
Ductwork Replacement
Full replacement for duct systems that are too damaged or outdated to repair effectively.
Flex Duct Repair
Fixing kinked, torn, or disconnected flexible ductwork sections.
New Ductwork for Additions
Properly sized duct runs for home additions, instead of tying new space into an already-strained system.
Benefits of Proper Ductwork
Even Temperatures Room to Room
Properly sealed, correctly sized ductwork delivers air evenly instead of favoring whichever room is closest to the unit, which is a common complaint in older homes.
Real Energy Savings
In a typical house, 20 to 30 percent of the air moving through the duct system is lost to leaks, holes, and poor connections. Sealing that up shows up directly on your utility bill within a billing cycle or two.
Less Strain on Your AC or Heat Pump
When ductwork isn’t fighting your system, the equipment itself lasts longer and breaks down less often, since it’s not compensating for lost air constantly.
Better Indoor Air Quality
Sealed ducts pull in less dust and attic air, which keeps whatever your air handler is filtering from getting undone by leaks elsewhere in the system.
Backed by Our Guarantee
Ductwork repair and installation carries the same one-year labor guarantee and 100% satisfaction guarantee as our other work, so the fix is expected to hold.
What Ductwork Service Includes
We inspect the full duct system, including runs in the attic, crawlspace, or garage, and test for leakage rather than guessing where the problem is.
From there, we explain what we found, show you the specific sections that need attention, and give you a price before any work begins. Where sealing is enough, we won’t push for a full replacement, and where replacement genuinely makes more sense, we’ll explain exactly why, with the reasoning laid out plainly.
Related Services
Indoor Air Quality, since dirty ducts can undo clean air efforts.
AC Installation & Replacement, for a new system plus new ducts.
AC Repair, if you’re not sure whether it’s the unit or the ducts.
Maintenance & Tune-Ups, to catch airflow issues early.
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.
Ductwork Questions
How much does new ductwork cost?
It depends on the size of the home and how much of the system needs replacing. We inspect first and give you a written price, not an estimate over the phone.
Is duct sealing worth it?
For most homes, losing 20 to 30 percent of conditioned air through leaky ducts, yes. It’s often one of the more cost-effective fixes available for the improvement it makes.
Can you fix ductwork without replacing all of it?
Often, yes. We seal and repair sections that are still in reasonable shape and only recommend replacement where it’s genuinely needed, not as a default.
Will new ductwork lower my energy bill?
If leaky or undersized ductwork is the main issue, yes, often noticeably, since the system stops fighting itself to reach the thermostat setting.
Do you handle ductwork for manufactured homes?
Yes, we work on the ductwork common in manufactured and older homes throughout Putnam County and beyond, and we know what to expect in that housing stock.
If you have questions, check our FAQs or give us a call. We’re here to help.