Fast, Accurate Load Calculations Delivered Nationwide
Manual J, D, S Load Calculations & Geothermal Loop Design by Trusted HVAC Engineers. Code Compliant & Fast Turnaround. All 50 States Served
Over 30 Years HVAC Field Experience & Engineering
HVAC Design Services for Homes as Small as 300 Sq Ft to 50,000+
Every Design Prioritizes Precision, Comfort & Fast Turnaround
Fast Turn Around Time
Get your Load Calcs in record time, accurately produced and code compliant.
Code Compliant
Our Manual J, D, S are ACCA Code Compliant & ready for inspection!
Licensed Engineers
Over 30+ Heating and Air Expertise in the Field. Specializing in Geothermal
Residential Load Calculation Statewide
- Manual J Load Calculation, IGSHPA Geothermal Loop Design, Manual D Duct Design, & Equipment Selection (Manual S) Services.
Trusted by HVAC Industry Professionals. Where Precision Matters.
How to Get a Load Calculation Completed
1. MANUAL "J" HEAT LOAD
A Manual J load calculation determines a home's heating and cooling needs based on precise factors. First, it analyzes square footage, insulation, windows, and climate to calculate heat gain and loss. Then, it considers occupancy, appliances, and airflow to refine the results. Next, the data helps select the right HVAC size for maximum efficiency. Without it, an oversized unit short cycles, causing humidity issues and wasted energy. Conversely, an undersized system struggles, leading to discomfort and higher bills. Therefore, a Manual J calculation ensures comfort, efficiency, and cost savings. Finally, professional HVAC design prevents future problems and extends system lifespan.
2. MANUAL "S" EQUIPMENT SELECTION
A Manual S equipment selection ensures the chosen HVAC system matches the Manual J load calculation results. First, it considers heating and cooling capacities to prevent inefficiency. Then, it factors in blower performance, fan speed, and manufacturer specifications. Without it, oversized units cycle poorly, while undersized ones struggle. Therefore, proper selection maximizes comfort, efficiency, and system longevity. Finally, a well-matched system reduces energy costs and prevents future performance issues
3. MANUAL "D" DUCT DESIGN
A Manual D duct design carefully ensures balanced airflow, leading to consistent heating and cooling throughout the home. First, it accurately calculates duct sizes based on Manual J, ensuring precise airflow distribution. Next, it thoroughly considers factors like friction loss, static pressure, and equipment compatibility to optimize performance. Without this critical step, poor airflow quickly leads to uncomfortable hot and cold spots. As a result, improper design reduces efficiency and shortens system lifespan. On the other hand, a properly designed system significantly improves comfort, efficiency, and long-term reliability. Furthermore, well-planned ducts help reduce noise, minimize energy waste, and lower maintenance costs. Ultimately, investing in professional duct design ensures a more efficient and comfortable home.
All Three Services- Manual J, D, and S - Fast Turnaround
Learn more about Manual J, Manual D, and Manual S
Manual J Service
A proper Manual J HVAC load calculation and duct design not only ensures your home runs efficiently
Manual S (Equipment Selection)
Manual S contains detailed technical and operational specifications on many different brands of HVAC systems
Learn More
Manual D (Duct Design)
Beyond Manual J load calculations, we also specialize in customized Manual D Duct Design for new construction and remodels.
We are Local Licensed Certified Accredited
Licenses & Certifications
-State Certified Florida Mechanical Contractor License CMC1250149
-State Certified Florida Building Contractor License CBC1259658
-Residential Alabama Home Builders License #12006
-Heating, Air Conditioning, & Refrigeration License 16800
-Class II Unrestricted Georgia Mechanical Contractors License #CN210305
-Georgia General Contractors License #RLQA002682
Accreditation & Statewide Certifications:
-L.E.E.D Accreditation
-Member of The Green Chamber of the South
-Waterfurnace International Certified Service and Sales Certification
-IGSHPA Geothermal Certification #24131-1108
-EPA Universal Refrigeration License #PDFE069CED1BC94M1
ASHRAE Membership #8139979
ACCA Membership
We work closely with homeowners, builders, and architects to find cost-effective solutions while prioritizing energy efficiency. Because of our commitment, we consistently deliver exceptional results. Moreover, our success comes from a strong reputation for professionalism and integrity. Additionally, our extensive industry expertise ensures reliable and efficient solutions. Therefore, clients trust us to meet their unique needs with precision. Finally, our dedication sets us apart in the industry.
"We had our Manual J and Manual D calculations done by Tim, and the results were incredible! The system design works very well for our home. Highly recommend their services!"
— Alexandra S., Homeowner
"As a contractor, I trust this company for all my Manual J and D designs. Their expertise helped us deliver top-quality HVAC systems for our clients, improving comfort and lowering energy costs. These guys literally perform magic in shoving 10 lbs of stuff in a 5lb bag.
— Jake L., General Contractor
"I was struggling to keep up with getting the HVAC loads done in time for my new construction starts. I have only used them for their Manual J services but they save me a lot of time and allow me to keep doing heating and air stuff. The service was quick and professional, and I'll keep using them!"
— Mark L., HVAC Contractor