Manual J Services and HVAC Design for Permits

We specialize in ACCA-compliant Manual J services and HVAC system design, including Manual S, Manual D, Radiant design, ERV and HRV design, REScheck, Florida R405, and other energy code reports for permits.
We deliver accurate, fast, and install-ready solutions for contractors, builders, and homeowners nationwide.

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MANUAL J SERVICES FOR PERMIT

20+ YEARS OF EXPERIENCE

ACCA APPROVED SOFTWARE

Services

We offer a full range of HVAC design services, including Manual J, Manual S, and Manual D.
In addition, we provide Radiant design, ERV/HRV design, REScheck, Material takeoff, and energy reports for permit approval.
As a result, you receive a complete, code-compliant design package ready for permit submission.

Manual JDS

ACCA-approved Load calculations, Equipment selection, and Duct design for permit-ready, code-compliant residential projects.

Manual JS

Our Manual J calculation service ensures accurate system sizing, improved comfort, and full code compliance for permit approval.

Radiant design

Radiant floor heat or Snowmelt design for enhanced comfort and energy efficiency.

ERV DESIGN, HRV DESIGN, VENTILATION DESIGN

ERV/HRV design

Code‑compliant ventilation design to improve indoor air quality in addition to recovering energy.

Rescheck

Rescheck – Compliance Certificate determines if your home meets the IECC energy codes.

FLORIDA R405, ENERGY LOAD CALCULATIONS, FLORIDA ENERGY CERTIFICATE

Florida R405 form

Energy load calculations determine whether your home meets the energy-efficiency requirements.

Material list

Material takeoff is a detailed list of materials & their quantity, pertinent to HVAC systems.

Express delivery

We offer express delivery for an extra charge. Reach out to ask us about our availability.

Meet Our Team

Bobby

Owner
Master HVAC (NJ)
Lead System Designer

Boryana

Owner
Project Coordinator
HVAC System Designer

B&B System Design LLC is a family-owned HVAC design firm specializing in Manual J services, ACCA-approved load calculations, and complete HVAC system design. In addition, we deliver code-compliant solutions to contractors nationwide since 2019.

Bobby, a New Jersey Master HVAC, brings 15+ years as an HVAC system designer, and over 20 years of field experience. As a result with more than 13,000 completed projects, he combines real-world expertise with technical precision to ensure every system is properly sized, energy-efficient, and fully compliant—without relying on outdated rules of thumb.

Boryana is an HVAC system designer with over 6 years of experience, and over 4000 completed projects behind her belt.
She manages client relations, price quotes, project coordination, and quality control while ensuring precision, consistency, and a high standard of execution across every project in order to set your projects up for long-term sucess.

What Clients Say
(Verified Google Reviews)

5.0 ★ Google Rating | HVAC Design Services | Manual J, S & D for Permits

Marie Gray

Bobby has been wonderful to work with. We have been using his services going on 15 years now. His response time is impeccable and much appreciated!
⭐⭐⭐⭐⭐ (Google Review)

Ted Olson

This is a solid service with excellent response times and great work! Thank you Bobby for help with this project we’ll be in touch soon!
⭐⭐⭐⭐⭐ (Google Review)

malwa0501

I had a great experience working with Bobby. He handled the AC unit calculations needed for construction permit very quickly and with a high level of professionalism. He was communicative, friendly, and made the entire process smooth.
I truly appreciate his efficiency and super quick turnaround time. I would be more than happy to recommend him to anyone in need of similar services.
⭐⭐⭐⭐⭐ (Google Review)

Emanuel Medeiros

Great work, very professional and fast. Bobby went above and beyond of what I requested. Thank you. Definitely recommend their services to anyone.
⭐⭐⭐⭐⭐ (Google Review)

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Price Quote

If you’re ready to get started, request a quote today.

Simply submit your floor plans, and we’ll provide a fast, itemized quote within an hour.