Frequently Asked Questions

The BSP Certificate is an entry-level credential that demonstrates your understanding of the basic principles of building science, such as how heat, air, and moisture interact in a home. It’s perfect for those new to the industry or anyone working alongside energy efficiency professionals.

No, the BSP is a certificate of knowledge, not a professional certification. It does not require recertification or continuing education, and it’s designed as a first step toward more advanced BPI certifications.

Although it’s not required, you can greatly improve your chances of passing the exam by taking our course. 

The exam is online, non-proctored, and open book. You can take it anytime, anywhere with an internet connection. It consists of multiple-choice questions.

You need to score at least 70% to pass the exam. 

Yes, the BSP is a prerequisite for certain BPI certifications, including the Building Analyst Technician (BA-T). It’s a great way to build foundational knowledge before moving on to hands-on or field-based certifications.

Yes! Once you pass, you’ll receive an official BPI Building Science Principles Certificate of Knowledge, which you can download and print.

If you're looking to continue in the field, consider enrolling in the BPI Building Analyst Technician (BA-T) training next. The BSP gives you a solid foundation to move forward with more hands-on, field-based certifications.

The BA-T certification demonstrates your ability to perform hands-on diagnostic testing on homes, including blower door and combustion safety testing. It’s the field-based half of the updated BPI Building Analyst pathway.

The BA-T focuses on field testing and data collection. The BA-P (Professional) focuses on analysis, modeling, and making recommendations. Both are needed to replace the legacy BPI Building Analyst certification.

Yes, the BPI Building Science Principles (BSP) certificate is a required prerequisite before you can earn your BA-T certification.

BSP Certificate of Knowledge. Completion of a BA-T training course is highly recommended but not required. Ability to perform field diagnostics using tools like a blower door and combustion analyzer.

It’s a field exam, not a written test. You’ll be required to demonstrate your ability to perform tasks such as:

• Setting up and using a blower door
• Measuring airflow and pressures
• Performing combustion safety testing
• Documenting findings accurately

The exam must be proctored by a BPI-approved proctor at an approved test location or in the field with proper equipment. Remote field exams are possible under specific guidelines.

Not necessarily. Some training centers provide the equipment during the exam. If testing remotely, you may need access to a blower door, manometer, combustion analyzer, and other diagnostic tools. Contact us to further discuss your options!

It is valid for 3 years. You’ll need to submit field hours and meet BPI’s renewal requirements to maintain your certification.

Yes, once you pass the field exam, your results are submitted directly to BPI, and they will issue your certification upon verification.

Once you’re certified as a BA-T, you can move on to earn the BA-P (Building Analyst Professional) certification to complete the full BPI Building Analyst pathway.

Please prepare the following prior to your field exam:

• Blower door & accessories
• Manometer
• Pressure pan
• TEC Exhaust Fan Flow Meter
• Smoke pen
• Combustion Analyzer of CO Analyzer
• Combustible Gas Leak Detector
• Personal CO meter
• Necessary Personal Protective Equipment (PPE)

The BA-P certification demonstrates advanced knowledge in building science, energy modeling, and work scope development. It’s the analytical half of the updated Building Analyst career path, focused on interpreting diagnostic data and making recommendations to improve home performance.

The BA-T focuses on collecting data through field testing (blower door, combustion safety, etc.), while the BA-P focuses on analyzing that data to develop energy efficiency recommendations.

To be recognized as a full Building Analyst under BPI’s new scheme, you need both certifications.

• You must already be certified as a BPI Building Analyst Technician (BA-T).
• A training course is highly recommended to prepare for the exam, but not required.
• A strong understanding of building science, energy modeling, and retrofit strategies is essential.

Yes, the BSP Certificate is required as a foundation before progressing to BA-T and then BA-P.

The BA-P is a written (online) exam, consisting of multiple-choice questions on topics such as:

• Building science principles
• Interpreting diagnostic data
• Developing scopes of work
• Health and safety
• Energy modeling

It’s an online, proctored exam that you can take from home, provided you have a webcam and a quiet, secure testing environment.

The BA-P certification is valid for 3 years. To renew, you’ll need to meet continuing education (CEU) requirements, document field hours, and submit the renewal application and fee to BPI.

Yes, once you pass the exam, we’ll report your results directly to BPI. They’ll then issue your certification and list you in their certified professional database.

If you already hold the BA-T, earning your BA-P means you’re now a fully certified BPI Building Analyst under the new certification structure. You may also consider pursuing other BPI certifications, such as Energy Auditor (EA) or Quality Control Inspector (QCI), depending on your career goals.

Yes, but we highly recommend taking a course to ensure you’re prepared. The exam is challenging and assumes a strong understanding of both theory and real-world applications.

The IDL Certification qualifies contractors to perform blower door and duct leakage tests required by IECC codes for new homes and remodels. It’s a simple, affordable way to expand your skills and services.

Yes! Upon passing the BPI IDL field exam, you’ll be certified to perform both blower door and duct leakage tests on new homes, as required by IECC 2009 and 2012 codes.

The field exam is conducted at your preferred location, as long as it meets BPI’s testing requirements. A proctor will oversee the exam remotely, and we provide a checklist and training video to help you prepare.

Once you pass the exam, your results are submitted to BPI. You’ll typically receive your certification within 3–5 business days, directly from BPI.

Absolutely. This course is beginner-friendly, with clear video instruction and instructor support by phone. It's perfect whether you're just starting out or adding skills to your current work.

This certification prepares professionals to perform energy audits and recommend improvements for multifamily residential buildings. It emphasizes energy efficiency, occupant comfort, health, and building durability.

Yes. Our course aligns with BPI’s standards and prepares you for the BPI Multifamily Building Analyst certification exams (written and field/practical).

Both the written and field/practical exams are conducted online. You'll schedule them at your convenience, and we’ll provide instructions and support throughout the process.

To enroll in this course, you must meet at least one of the following prerequisites: hold a current BPI Building Analyst Certification or have experience with commercial HVAC system operations.

The HHP Certificate signifies your understanding of how a home’s systems and conditions affect the health and well-being of its occupants. It emphasizes practical knowledge around creating healthier indoor environments.

This course is ideal for housing professionals, energy auditors, home inspectors, weatherization workers, and anyone interested in promoting safe and healthy homes.

Poor indoor air quality and unhealthy home environments can lead to serious health issues. This certification helps professionals identify and address these issues to create safer, healthier homes for occupants.

Yes. To earn the HHP Certificate of Knowledge, you must successfully complete the course and pass the final assessment.

The HHP Certificate demonstrates your commitment to healthy housing standards and can enhance your qualifications in energy efficiency, building performance, housing inspections, and related fields.

If you're pursuing the HEP Energy Auditor certification, you must first meet BPI’s required combination of education and work experience. You can review the full list of prerequisites here: www.bpi.org/sites/default/files/Energy_Auditor_Prerequisites.pdf.

This course is ideal for home energy auditors, home inspectors, home performance professionals, business owners, and anyone looking to deepen their knowledge of advanced home energy auditing.

Candidates must have a valid BPI Energy Auditor Certification to be eligible for the QCI exam.

Both the written and practical exams are administered online and are proctored by our certified BPI proctors.

The TBP Certificate is a specialized training that prepares professionals to plan, design, and manage deep energy retrofit projects in residential buildings. It equips you with the knowledge to coordinate building decarbonization efforts and guide clients through complex retrofit processes.

The HHP Certificate focuses on how home conditions affect occupant health—like moisture, air quality, and ventilation. The TBP Certificate is centered on energy efficiency and decarbonization, teaching you how to plan and manage deep energy retrofit projects. 

Because we offer the most affordable and efficient path to certification, without sacrificing quality. Our program is designed to get you certified faster, with clear step-by-step guidance, expert instructors, and flexible online access. Whether you’re new to the industry or leveling up your skills, we make it easy, accessible, and budget-friendly. Join thousands of successful students who chose the smarter way to get certified.

No prerequisites are required to begin your HERS Rater training with Green Training USA. Our program is designed to be beginner-friendly, so whether you're new to the industry or making a career shift, you're welcome to enroll.

A HERS (Home Energy Rating System) Rater is a certified professional who evaluates the energy efficiency of homes. Raters perform energy modeling, diagnostic testing (like blower door and duct testing), and assign a HERS Index Score, a nationally recognized rating for home energy performance.

To become a certified HERS Rater, you must:

• Complete a RESNET-accredited HERS Rater training
• Pass the RESNET National Rater Exam
• Pass additional exams (CAZ and Rater Simulation Tests)
• Complete 5 probationary ratings under the supervision of a RESNET Rating Provider
• Be affiliated with a RESNET Rating Provider who oversees your certification

The training covers a range of essential topics, including building science and energy efficiency principles, blower door and duct leakage testing, HVAC systems, insulation and envelope performance, energy modeling software, and RESNET standards and quality assurance protocols.

There is no equipment needed to complete the certification. 

You must pass the following RESNET exams:

• National Rater Exam
• CAZ (Combustion Appliance Zone) Simulation Exam
• Rater Simulation Practical Exam

The exams are online and proctored, and can be taken remotely with a secure testing environment. Simulations are interactive and test your ability to conduct diagnostic assessments virtually. Student must secure an independent testing center to proctor their exam.

Most students complete the training and certification process in 4 to 8 weeks, depending on their schedule, field experience, and the availability of a Rating Provider to oversee probationary ratings.

The certification must be maintained annually through:

• Continuing Education (18 RESNET-approved PD every 3 years)
• Quality assurance reviews by your Rating Provider
• Remaining in good standing with a RESNET-accredited Rating Provider

Yes. You must be affiliated with a RESNET-accredited Rating Provider both during the certification process (for supervision of your probationary ratings) and afterward to maintain your certification.

Certified HERS Raters can work on:

• Code compliance verification
• ENERGY STAR® homes
• Tax credit and incentive program verification
• New home construction consulting
• Utility program support
• Energy modeling and analysis

Our course package includes:

• A RESNET-accredited online training course, self-paced and accessible 24/7
• All required certification exams, including the National Rater Exam, CAZ Simulation, and Rater Simulation Practical Exam

Please note: The 5 probationary ratings required for certification are not included. You will need to contact and work with a RESNET-accredited Rating Provider separately to complete that portion of the certification process.