Palm City · Manual J & D Design
Manual J Load Calculation & Manual D Duct Design in Palm City, 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 Palm City, 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 Palm City 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 Palm City
Manual J Load Calculation & Manual D Duct Design in Palm City, FL.
Many Palm City homes have outgrown the way their air conditioning was first sized. Kitchens opened to great rooms, lanais were enclosed, guest suites were added and windows were upgraded, while replacement systems were matched to the old tonnage. In larger homes, that can mean two systems sized by guesswork, one oversized and short cycling while the other struggles. Swift runs Manual J load calculations in-house for the systems and duct projects we install in Palm City, measuring every room so equipment and airflow match the home. The calculation also answers the questions that matter most in bigger houses: how the load should be divided between two systems, whether zoning would serve a wing better and how much capacity a variable-speed system needs to dehumidify well at low speed. From there, a Manual D duct design delivers the right airflow to each room, keeping every bedroom within 3°F of the thermostat in a Palm City home of any size.
About this service
Manual J Load Calculation & Manual D Duct Design in Palm City
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 Palm City.
Watch what to expect when our team shows up. Honest installs, careful technicians, the same standard on every Palm City job.
Neighborhoods we serve
Local areas in Palm City.
Manual J and Manual D design for Palm City homes in The Preserve, Cane Creek, Harbour Ridge, Martin Downs Country Club and the custom-home and riverfront neighborhoods along Martin Downs Boulevard, SW Mapp Road, Citrus Boulevard, Murphy Road and Kanner Highway, including homes with two or more air handlers.
Local details
Manual J Load Calculation & Manual D Duct Design details for Palm City.
A Palm City Manual J takes a detailed walk through the home. We measure each room, including great rooms and tall entries, record every window and door by size, direction and glass type and note shading from porches, overhangs and the property's mature trees. Enclosed lanais and additions are calculated on their own. We check the attic insulation and the location of each air handler and duct system. From the room-by-room heat and moisture loads, Manual S helps us choose equipment for each system, paying attention to how two-stage and variable-speed units dehumidify at lower capacity. The loads also show how to divide the house between two systems or zones so each serves rooms with similar needs. Manual D sizes the supplies, returns and trunks for each system and checks them against what each blower can deliver, and Manual T guides register choices for rooms with high ceilings. We review the full plan with you, then verify each finished Palm City system with airflow readings.
Coverage map
Serving Palm City.
Same-day service across every neighborhood and ZIP code below. No travel surcharges.
Neighborhoods we serve
- The Preserve
- Cane Creek
- Harbour Ridge
- Martin Downs Country Club
ZIP codes we cover
2 ZIP codes across Palm City.
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
By load and layout, not just by floor area. A room-by-room Manual J shows which rooms have similar needs and when, and Manual D shows which system can reach them efficiently. In many Palm City homes, re-dividing the rooms between the two systems is what finally evens out the comfort without adding more capacity.
Yes. Enclosing a lanai adds conditioned space that usually has a lot of glass and less insulation than the rest of the house. We calculate it as its own room in the Manual J and give it properly sized ducts in the Manual D design, so your Palm City lanai is comfortable instead of becoming the warmest room.
Yes. Share your plans and we'll run the Manual J on the finished home, select equipment with Manual S and design the ducts with Manual D. Planning early lets the HVAC be built into the design rather than squeezed in later, which is especially valuable in larger Palm City homes.
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
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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.
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