Lantana · Manual J & D Design
Manual J Load Calculation & Manual D Duct Design in Lantana, 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 Lantana, 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 Lantana 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 Lantana
Manual J Load Calculation & Manual D Duct Design in Lantana, FL.
A Lantana cottage, a Hypoluxo Island waterfront home and a condo near the beach can all have similar square footage and completely different cooling needs. That is why Swift doesn't size systems by square feet. We run Manual J load calculations in-house for the replacements and duct projects we install in Lantana, counting what actually brings heat and moisture into each room. Waterfront homes often have large glass areas facing east toward the water, older cottages may have little attic insulation, and many west-side homes have been upgraded with impact windows that cut the load. Getting those details right matters twice in Lantana's humid air: the system has to cool and also run long enough to pull out moisture. Once the loads are known, a Manual D duct design sizes each run so air reaches every room in the right amount. That's how we keep each bedroom within 3°F of the thermostat and avoid paying for equipment that is larger than your Lantana home needs.
About this service
Manual J Load Calculation & Manual D Duct Design in Lantana
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 Lantana.
Watch what to expect when our team shows up. Honest installs, careful technicians, the same standard on every Lantana job.
Neighborhoods we serve
Local areas in Lantana.
Manual J and Manual D design for homes and condos across Lantana, including Hypoluxo Island, Pine Ridge, the South Palm Beach area the waterfront homes on the Intracoastal, the cottages near the old downtown, and the neighborhoods along Lantana Road, Hypoluxo Road, Dixie Highway and Federal Highway.
Local details
Manual J Load Calculation & Manual D Duct Design details for Lantana.
The Manual J walk-through in a Lantana home covers every room: floor area, ceiling height, window sizes and directions, glass type, exterior doors and shading from trees or neighboring buildings. We check the attic for insulation depth and duct location, and we ask about upgrades such as new windows, a reflective roof or added insulation. The calculation produces room-by-room heat and humidity loads. Manual S then guides the equipment choice, favoring systems that hold their moisture removal at lower speeds, which suits Lantana's waterfront humidity. Manual D turns the loads into duct sizes, including return paths for closed bedrooms and a total system pressure the blower can handle, and Manual T helps choose registers that spread the air well. For condos, we work within the building's limits on equipment size and duct space. You review the design before work starts, and we confirm it with airflow measurements once your Lantana system is running.
Coverage map
Serving Lantana.
Same-day service across every neighborhood and ZIP code below. No travel surcharges.
Neighborhoods we serve
- Hypoluxo Island
- Pine Ridge
- South Palm Beach
ZIP codes we cover
1 ZIP codes across Lantana.
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
Small homes are where sizing mistakes are easiest to feel. An oversized unit in a compact Lantana cottage or condo short cycles and leaves the air damp. A room-by-room Manual J takes little time on a smaller home and keeps you from buying more capacity than you need, which is better for comfort and the electric bill.
Waterfront Lantana homes often have big windows and sliding doors facing the Intracoastal or the ocean, plus higher humidity. Manual J counts the size, direction and glass type of every window, and Manual S picks equipment that handles the moisture load, so the system controls humidity instead of just chilling the air.
Yes. Every duct replacement we do in Lantana is built from a Manual D design based on a fresh Manual J, even if the AC itself stays. The design decides trunk and branch sizes, return locations and register choices so each room gets the air its load calls for.
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.
Related services
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Air Conditioning Installation
Expert AC installation with top-rated equipment and warranty-backed workmanship.
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.
Learn more
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