HVAC Load Calculations for Permits and Code Compliance Nationwide.

Always nervous when using an online service , but this company was stellar. They responded quickly, they listened to what I wanted and were fabulous to deal with. I would recommend them to anyone needing their services.

The ProCalcs team consistently delivers exceptional value with unmatched response times. Their designers are highly knowledgeable, approachable, and thoughtful in every aspect of their work. They answer all of our questions quickly and clearly, allowing us to keep our projects moving forward without delays.

ProCalcs makes mechanical design and energy calculations a seamless and straightforward process. Their efficiency, accuracy, and commitment to client support truly set them apart. I highly recommend them to anyone looking for reliable, high-quality mechanical design services.

As a General Contractor I highly recommend ProCalcs for all of your projects. Excellent customer service, instant response to all of your questions and updates, Fast Service and return with your projects calculations in a record time .
Great job guys , keep it up. Till the next project.
Buildwell Construction

This is the most responsive company I’ve ever worked with. They answered my emails even on weekends. Great results and a pleasure to work with.

Fast and helpful service for my manual JS. Would highly recommend!

Excellent Professional Service

2nd time around as a residential customer. Thorough, patient, knowledgeable, and freaky fast with response times— even outside normal hours on occasion. Thanks for great service!

Fair pricing, fast service. Highly recommend!!

My experience with ProCalcs has been absolutely invaluable! Richard's help was instrumental in solving a permitting issue I had for a long while, and continues to go above and beyond. They are super responsive and always a pleasure to speak to.

Very detailed and super responsive

Very responsive to inquiries, very quick service with great communication and I am happy with the product. Will use ProCalcs again for my next build.

Sol was great

Updated: 01-19-2
Just received Our HVAC Package for a residential expansion Project , as always Pro-calcs was fast and professional.
Updated: 09-19-25 Exceptional HVAC Design Services for a client's Barber Shop Project

We recently partnered with Pro Calcs for the HVAC system design of a client's barbershop, and we couldn't be more pleased with their services. From the outset, the team at Pro Calcs demonstrated the utmost professionalism and expertise in their field.

Timeliness: The Pro Calcs team respected our project timeline with commendable precision. They completed all tasks according to our schedule, ensuring that no aspect of the design process would delay our progress.

Cost-Effective: Price is always a consideration, and Pro Calcs provided exceptional value. Their services were reasonably priced without compromising on quality, which was greatly appreciated as it contributed to the overall success of the project within budget.

Responsiveness: Every query and request we had was met with prompt and clear communication. Their responsiveness made the collaboration seamless, reducing stress and making decision-making straightforward.

Knowledge and Expertise: Pro Calcs' knowledge in HVAC system design is evident in the quality of work they delivered. Their team was not only knowledgeable but also very willing to share their expertise, which enhanced our understanding and ensured that the best possible system was installed in the barber shop.

Choosing Pro Calcs was absolutely the right decision. Their team became a valued part of our project, and their contribution was a significant factor in its success. We highly recommend their services to anyone in need of reliable and professional HVAC design.

Very prompt service, and very accurate, professional drawings and calculations. Their client satisfaction skills are head and shoulders above others. I was extremely impressed with everything, including their telephone manners, and will definitely recommend them to anyone needing their services.

Procalcs did a Manual S for my condo, when my HVAC needed replacement. As I suspected the existing HVAC was way over sized.

It took me at most 30 minutes to gather the needed info, they produced results within 2 days!

I suggest home owners get a Manual J or S before the HVAC needs replacement. It could save money and provide a more comfortable home.

We've had great results from ProCalcs. Super responsive, too!!

I received very prompt service and a very detailed plan and engineered calculations for my HVAC system design. I also liked the fact that I had a direct discussion with the designer, Wind Carbaquil.

Kim was on time, accurate and responsive to my requests for the HVAC design of an 8,500 square foot commercial remodeling project.