West Palm Beach · Manual J & D Design
Manual J Load Calculation & Manual D Duct Design in West Palm Beach, FL
In-house Manual J load calculations and Manual D duct designs, so your system is right-sized and every room gets the air it needs. Serving West Palm Beach, FL. 4.8★ on Google with 229+ reviews.
18+
Years in business
4.8★
229+ Google reviews
Licensed
FL #CAC1820211
A+
BBB Accredited
24 / 7
Emergency response
Why Swift AC
What you get with our manual j load calculation & manual d duct design.
Four things we don't compromise on, every job, every customer.
Why this matters
Built for the home you live in.
Your AC is not a piece of equipment. It is the difference between kids sleeping through hot August nights and a hallway fan war at 2 a.m.
We treat every install and repair the way we would want our own family taken care of. Properly sized systems. Honest diagnostics. Clean work that lasts. Because the people you love deserve a home that stays cool, dry, and comfortable, year after year, without you having to think about it.
Why Swift AC
The standard South Florida homeowners trust.
We earn our reputation one job at a time. Every system we install, every repair we make, every customer we serve carries our 100% satisfaction guarantee.
Offers for West Palm Beach customers
Save on quality HVAC service.
Real, simple deals on the work you actually need. No mystery pricing, no bait and switch.
What customers say
4.8★ on Google with 229+ reviews.
We earn our reputation one job at a time. Here's what your neighbors are saying.
“When you are looking for a reliable, quick and honest HVAC team this is the company you want to deal with. Reach out, you will be wowed. Also, they are nice guys and will spend the time to explain your needs.”
David Ragheb
West Palm Beach
...and 226+ more on Google.
Book your manual j & d design in under 30 seconds.
A real Swift AC team member answers, every time. Same-day service across South Florida.
About West Palm Beach
Manual J Load Calculation & Manual D Duct Design in West Palm Beach, FL.
Most air conditioners in West Palm Beach were sized with a rule of thumb, a ton for every so many square feet, or simply matched to whatever was there before. That shortcut ignores what actually drives the cooling load here: west-facing glass, sliding doors, attic insulation, roof color, shade trees and how leaky the house is. Swift does its own Manual J load calculations and Manual D duct designs in-house for installations and duct replacements across West Palm Beach. It matters in this city because the housing is so mixed. A 1920s bungalow in Flamingo Park with original windows behaves nothing like a 2000s home off Okeechobee Boulevard or a downtown condo with a wall of glass facing the Intracoastal. Oversized systems cool fast, shut off and leave the house clammy, while undersized ones run nonstop. A room-by-room calculation gets the size right, and a matching duct design gets the air to every room so each bedroom stays within 3°F of the thermostat.
About this service
Manual J Load Calculation & Manual D Duct Design in West Palm Beach
Most air conditioners in South Florida were sized with a rule of thumb, so many tons for so many square feet, or simply matched to the unit they replaced. That shortcut ignores what really drives the load in a Florida home: window area and direction, glass type, shading, insulation, ceiling heights, duct location, air leakage and the moisture the system has to remove. An oversized system cools fast, shuts off and leaves the house clammy. An undersized one runs nonstop. And without a duct design, even a perfectly sized system can't get the right amount of air to each room.
Swift Air Conditioning does this work in-house, using the ACCA standards. Manual J is the room-by-room heating and cooling load calculation. Manual S uses those loads to select equipment with the right capacity and enough moisture removal for our climate. Manual D designs the duct system, sizing each supply, trunk and return so the blower can deliver the airflow each room needs. Manual T guides the choice of registers and grilles so the air mixes well in every room.
The design target is the comfort guideline in ACCA's Manual RS: each room within 3°F of the thermostat while cooling. We build every replacement and duct project to the design, then measure airflow and temperatures after installation to confirm it performs.
Florida's energy code calls for heating and cooling equipment in new homes to be sized with Manual S from a Manual J load calculation, and the residential code points to Manual D for duct design. We bring the same discipline to replacements, additions and renovations, because it's what makes a home comfortable. Call (561) 685-8408 to schedule an in-home visit.
Ruud Pro Partner
Real Swift work in West Palm Beach.
Watch what to expect when our team shows up. Honest installs, careful technicians, the same standard on every West Palm Beach job.
Neighborhoods we serve
Local areas in West Palm Beach.
Manual J load calculations and Manual D duct design for homes throughout West Palm Beach: Northwood, Flamingo Park, El Cid, SouthEnd, Grandview Heights, Prospect Park, Palm Beach Lakes, CityPlace and the downtown condo towers, plus the newer communities west of I-95 along Okeechobee Boulevard, Belvedere Road and Southern Boulevard.
Local details
Manual J Load Calculation & Manual D Duct Design details for West Palm Beach.
For a Manual J, we measure the house room by room: wall and window areas, which way each window faces, ceiling heights, insulation, where the ducts run and how many people live there. A Flamingo Park bungalow with a renovated kitchen and new impact windows can need far less cooling than the old system suggested, while a Northwood home with a closed-in porch or a Florida room addition usually needs more air sent to that space. Manual S then matches equipment to those loads, paying attention to how much moisture the system removes, which matters as much as temperature in West Palm Beach. Manual D sizes every supply and return run so each room gets the airflow its load calls for, and Manual T guides register choices so the air reaches across the room. The design goes with your replacement quote or duct project, and our installers build to it. When the job is done, we measure the finished West Palm Beach system to confirm the design works.
Coverage map
Serving West Palm Beach.
Same-day service across every neighborhood and ZIP code below. No travel surcharges.
Neighborhoods we serve
- Northwood
- Flamingo Park
- El Cid
- SouthEnd
- CityPlace
ZIP codes we cover
8 ZIP codes across West Palm Beach.
Nearby cities
Manual J Load Calculation & Manual D Duct Design in nearby cities.
We service these neighboring cities with the same standard, same response time, and no travel surcharges.
Got questions?
Frequently asked questions
Manual J is the ACCA standard for calculating how much heating and cooling each room of a house needs, based on its windows, walls, insulation, orientation and occupants. If you are replacing an AC or ductwork, adding a room or renovating in West Palm Beach, a Manual J keeps you from buying the wrong size system. Swift runs them in-house as part of our replacement and duct work.
Manual J tells us how much air each room needs. Manual D designs the duct system that delivers it, sizing every supply run, trunk line and return so the blower can push the right airflow to each room. Many West Palm Beach homes have ducts that were added or extended over the years without any design, which is why some rooms stay warm. A Manual D layout fixes that from the start.
ACCA's Manual RS comfort guidelines call for each room to stay within 3°F of the thermostat setting while cooling, and that is the target Swift designs to. If your West Palm Beach bedrooms swing more than that, the cause is usually duct sizing, leakage or missing return paths rather than the thermostat. A proper Manual J and Manual D design, followed by airflow balancing, is how we get there.
Manual J is the ACCA standard for calculating how much heating and cooling each room of a home needs. It accounts for walls, windows and their direction, glass type, shading, insulation, ceiling heights, duct location, air leakage and occupants, and it calculates the moisture load as well as the heat load.
Manual J calculates the loads. Manual S selects equipment that matches those loads, including enough moisture removal. Manual D designs the duct system that delivers the right airflow to each room, and Manual T guides register and grille selection. Used together, they produce a system that's sized right and delivers air evenly.
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Learn moreDuct Replacement
Whole-home duct replacement designed in-house with Manual J and Manual D, then sealed, insulated and balanced. Free in-home quote.
Learn moreAirflow Diagnostic & Duct Balancing Assessment
A measured airflow diagnostic for hot and cold rooms: static pressure, room-by-room airflow, duct leakage and thermal imaging, then balancing.
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Ready when you are
Comfort done right. Let's get started.
Free estimates on installs. Honest diagnostics on repairs. Same-day service across South Florida and a real human on the other end of the line, every time.
Service area
Palm Beach · Broward · Martin · St. Lucie
Licensed FL #CAC1820211