South Carolina, Manual J Calculations for New Construction

Getting HVAC design right starts long before equipment is installed. At Air Tight Solutions, we provide Manual J Calculations for new construction in South Carolina to help builders and contractors plan with confidence. Our team focuses on new construction, so we understand how important accurate sizing, clear reports, and dependable service are to the building process. We deliver calculations that support comfort, efficiency, and code compliance while helping projects move forward with less guesswork.

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Timely Service

Certified Team

Multi-State Expertise

Right-Sized Comfort Starts Here

Our Manual J service helps determine a home’s heating and cooling needs based on its layout, insulation, windows, orientation, and other key details. We review project information, complete accurate load calculation services, and provide documentation that builders can use during planning and approval. It’s a simple way to support better system performance from the start.

Better Sizing, Better Results

Our Manual J Calculations for new construction in South Carolina help builders choose properly sized systems for each home. Correct sizing supports comfort, efficiency, and long-term performance. It also helps protect the value of the build by aligning system design with the home’s actual heating and cooling demands.

Clear Documentation That Supports Compliance

We provide Manual J Calculations compliance testing with organized reports that are easy to use during reviews, approvals, and project coordination. Every calculation is prepared with attention to detail, helping builders meet each code requirement while keeping the process straightforward and easy to follow.

Practical Guidance for New Construction Teams

Our team works closely with builders and contractors to deliver Manual J Calculations certification in South Carolina that fits real construction schedules. We assess the home carefully to ensure the planned HVAC equipment matches the design. That means smoother planning, better coordination, and more confidence before installation begins.

About Us

Air Tight Solutions was built from firsthand experience in the residential construction industry. While working closely with new home projects, we saw a growing challenge for builders and contractors: keeping up with complex, ever-changing energy code compliance standards.

As we learned more about the time and coordination required to meet those standards, we saw an opportunity to simplify the process. With a strong focus on accuracy and a commitment to quality, we shifted our expertise to energy efficiency testing and compliance services for new construction exclusively.

Our work has also reached affordable housing projects, where we’re proud to help support sustainable, energy-efficient homes for communities in need. We believe energy efficiency should be within reach, and we remain committed to helping builders deliver high-quality, cost-effective housing solutions.

Today, Air Tight Solutions is proud to be a trusted partner in the construction industry, supporting quality, compliance, and sustainability in every project we take on.

Testimonials

Leo Jansen

7 months ago

I had the pleasure of observing Josh, Robert and Daniel recently during a Field QA trip, and was blown away by their process-oriented and quality-focused approach towards servicing their clients. Air Tight Solutions has a bright future ahead of them, and any builder or homeowner looking for a HERS Rating Company in their service area should look no further!

Jason O'Neal

7 months ago

Fast response and professional service. Awesome company, very dependable. As a builder I’m always looking for top notch subcontractors and Josh and his team are exactly that!

Cameron Howard

7 months ago

I had a great experience with Airtight Solutions for my home energy inspection. Their team was extremely knowledgeable and professional from start to finish. They performed a blower door test, duct leakage testing, and a full HERS rating, and took the time to clearly explain what everything meant for my home’s efficiency. If you’re building a new home or need energy code compliance testing, I highly recommend Airtight Solutions. They understand building science, insulation, air sealing, and HVAC performance better than anyone I’ve worked with in the Upstate SC area. The report was detailed, accurate, and delivered quickly. Top choice for home energy audits, RESNET HERS ratings, and blower door testing in South Carolina.

Mark Thoennes

8 months ago

Josh O’Neal with Air Tight Solutions is top-notch. We use Josh for duct blast and blower door testing on our projects at Mark Thoennes Builders, and he’s consistently fast, professional, and easy to work with. He shows up when he says he will, communicates clearly, and delivers accurate results without slowing down the job. His process is efficient, his reports are prompt, and he keeps things straightforward for our team and inspectors. If you’re a builder or homeowner needing blower door or duct blast testing done right (and done quickly), I highly recommend Josh and Air Tight Solutions.

Haley Michael

9 months ago

Highly professional and very helpful when determining the appropriate HVAC size/information needed for a new construction build. Josh was very knowledgeable and super responsive.

Kyle Pcheny

1 year ago

Josh always does a great job. He is always able to get to you in a timely manner. Will continue using him and recommend to all homeowners, investors or builders.

Nathan Arrowood

1 year ago

Brady Brannon

1 year ago

There is no one better to hire for your code compliance testing than Air Tight Solutions. From initial contact to completion of the job you will experience a true customer focused process while also learning something you did not know before. Their focus to better equip you for long term sustainability really sets them apart. If I built 100 houses a year I would call Air Tight Solutions for all 100.

Matthew Mullins

1 year ago

I recently did a full renovation on one of my homes, as I called in for my final inspection, I was informed that the required blower test was overlooked! We were already behind schedule so this is the last thing we needed! I called Air Tight Solutions and they were able to work us into the schedule before the next inspection date. It was a big save! Josh and his team did a great job from start to finish. I highly recommend them for your compliance testing needs.

Kyle Belcher

1 year ago

Called Josh after finding Air Tight Solutions via a Google search to help with an issue I was having getting a permit. My issue was not in their typical scope but he adapted to find a solution within 48 hours. Pricing was extremely reasonable and while many companies just say “no I can’t do that”, he chose to find a solution. Highly recommend! -Local Residential Builder

Clifton Budney

1 year ago

Josh, with Air Tight Solutions has greatly helped my company with fast turn times to make it easier on me and my company. Would recommend to anyone needing their services.

C Wilson

1 year ago

Josh is great to work with. We've used his services for a couple years for duct blast tests and have now started using him for load calculations. Always professional and timely with his work. Highly recommend!!

Leonard Vickery

2 years ago

Josh was very professional, friendly and accommodating. I needed his services quickly and he performed the test the very next day. He was a pleasure to deal with. I would highly recommend Air Tight Solutions.

Zachary Walsh

2 years ago

I called Josh with Air Tight Solutions after discovering I needed a Duct Leakage Test certificate for a final inspection. I was in a bind and after calling dozens of companies trying to find someone who can help, I was referred to Air Tight Solutions. He was able to provide service very promptly, he was very professional, and is now my go to contact for all new builds. Highly recommend.

Colt Byars

2 years ago

Josh has done many duct tightness test for us. Goes above and beyond for his customers. I highly recommend him!

Areas We Serve

We work with builders and contractors across South Carolina and throughout nearby markets in the Southeast. Our multi-state experience allows us to provide consistent support, reliable reporting, and trusted service for a wide range of new construction projects.