Frequently Asked Questions

  • Yes, we do have professional liability insurance. Contact us to request a copy of our certificate.

  • We currently only do business in the State of Texas, but we are interested in expanding across state lines in the future. If you’re a builder or architect with multiple projects in or outside of Texas, please contact us and let us know if you need our services.

  • The industry standard ACCA Manual J calculation procedure (8th Edition version 2.5) is an extensive calculation that requires an extensive amount of data to be performed accurately. The full unabridged Manual J is 614 pages long, and is an industry standard for HVAC designers. Right Foot Design Services, LLC uses powerful software from Wrightsoft to perform this calculation procedure quickly and accurately for our clients.

  • We can accept plans by email, but if your files are too large, you can upload your plans using a file sharing service like Dropbox.

  • Once we've completed your order, we'll send your reports in PDF format via email.

  • Once we deliver your order we’ll also send an invoice. Payment is due one business day after delivery unless otherwise indicated on the invoice.

  • We are a completely internet based company with no physical office location keeping our overhead costs low and our prices competitive. We are a limited liability company operating under the jurisdiction of the State of Texas. You can find all of our contact information on our contact us page.

  • Absolutely NOT! No matter the size, we'll put in the time and effort to make sure you have accurate calculations to ensure you get properly sized HVAC equipment for your residential project. We have experience from a small studio apartment above a garage to massive estates with multiple water source geothermal heat pumps, so we're confident we can handle your job no matter how big or small. If it's residential, we can do it.

  • For residential applications, ACCA’s Manual J, Eighth Edition (MJ8™) is the only procedure recognized by the American National Standards Institute (ANSI) and specifically required by residential building codes. Methods not based on actual construction details, nor founded on relevant physical laws and engineering principles, are unlikely to result in correct equipment sizing.

  • ACCA's Manual S Equipment Selection Procedure is used to select and size heating and cooling equipment to meet loads for a particular home, which are based on the results of ACCA's Manual J calculation.

  • Manual D, from the Air Conditioning Contractors of America (ACCA), provides a single set of ANSI-recognized duct sizing principles and calculations that apply to all duct materials.

  • No, we don’t currently offer Manual N commercial calculations, but we are considering adding this service in the future.

  • Geometry is a big part of the calculations we perform at Right Foot Design Services. Our logo reflects that, and if you’d like a deeper explanation we have one for you here.