Free BPI BSP Exam Prep
BPI Building Science Principles (BSP) Certificate of Knowledge
Prepare for the BPI BSP exam without spending hundreds on expensive prep courses. Free study guides, practice questions, flashcards, and related exam resources.
Quick Facts
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BPI BPI Building Performance Certifications License: Complete Roadmap
Follow this path to organize your licensing and exam preparation
Phase 1: House as a System and Heat TransferYou are here
Build a mental model of how envelope, HVAC, occupants, and site interact; master conduction, convection, and radiation.
Phase 2: Air Leakage, Moisture, and Envelope
Learn stack/wind/mechanical effects, CFM50/ACH50, vapor drive, dew point, R-value vs U-factor, and air barriers vs vapor retarders.
Phase 3: HVAC, Ventilation, and Combustion Safety
Study AFUE/SEER/EER, ASHRAE 62.2, CAZ testing concepts, CO action levels, and worst-case depressurization.
Phase 4: IAQ, Energy Efficiency, and Review
Review radon, VOCs, mold, lighting/appliances, renewables, and take full-length practice exams.
Can You Take the BPI BSP Exam?
Check if you meet the basic eligibility requirements
- •Purchase BSP exam access through BPI
- •Access to an internet-connected computer
- •Complete the exam within 1 year of purchase
BPI BSP Quick Facts
Time to Get Licensed
2-6 weeks self-paced
From start to license in hand
Retake Policy
Each exam attempt requires the full exam fee; no formal waiting period
Total Cost Breakdown
Free BPI BSP Prep Tools
100 Practice Questions
Covers heat transfer, air leakage, moisture, HVAC, ventilation, and combustion safety.
AI-Powered Explanations
Detailed building science explanations and real values for every question.
2026 Updated
Review the BSP Reference Guide (2nd Ed.) and current IECC/ASHRAE standards.
Free Access
All 100 BPI BSP practice questions are free with full explanations.
What You'll Study
11 chapters covering the exam topics in this guide
Chapter 1: House as a System & Energy Fundamentals
3 sections
Chapter 2: Heat Transfer Fundamentals & Thermal Calculations
3 sections
Chapter 3: Air Leakage & Building Pressure Dynamics
3 sections
Chapter 4: Moisture Physics & Building Moisture Control
3 sections
Chapter 5: Building Envelope Assemblies & Insulation Systems
3 sections
Chapter 6: HVAC Systems: Heating, Cooling & Heat Pumps
3 sections
Chapter 7: Mechanical Ventilation & ASHRAE 62.2
3 sections
Chapter 8: Combustion Safety & CAZ Testing Protocols
3 sections
Chapter 9: Indoor Environmental Quality & Health Hazards
3 sections
Chapter 10: Baseloads, Efficiency Sequencing & Customer Assessment
4 sections
Chapter 11: Renewable Energy & the U.S. DOE Home Energy Score
2 sections
BPI BSP Exam Details
BPI Building Science Principles (BSP) Certificate of Knowledge
Administered by Building Performance Institute (BPI)
Exam Content Breakdown
Based on the official Building Performance Institute (BPI) content outline
Interactions between building envelope, HVAC, occupants, and site; whole-building approach
Conduction, convection, radiation; R-value vs U-factor; thermal bridges
Stack effect, wind effect, mechanical effect; CFM50, ACH50, Pa basics
Vapor drive, relative humidity, dew point, condensation; air barrier vs vapor barrier
Insulation types, IECC R-value targets by climate zone, thermal bridging, envelope assemblies
Furnace AFUE, boilers, heat pumps, cooling SEER/EER, sizing concepts
Residential mechanical ventilation, ASHRAE 62.2 basics, exhaust vs supply vs balanced
Combustion appliance zone (CAZ), draft pressure, spillage, worst-case depressurization
Radon, CO action levels (30 ppm and 70 ppm), VOCs, formaldehyde, mold, lead
Energy efficiency principles, lighting and appliances, renewables, customer communication
What's Included
11 Chapters
Complete exam coverage
Practice Quizzes
With detailed explanations
Free to Start
No credit card required
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What's Next After the BPI BSP?
After passing the BPI BSP, you can pursue these career paths
BPI Building Analyst Technician (BA-T)
BSP is a recommended foundation before pursuing the BA-T field credential.
BPI Building Analyst Professional (BA-P)
Advanced energy auditing certification; BA-T leads into BA-P after the BSP foundation.
BPI Heating Professional
Specialized BPI credential for heating system optimization in residential buildings.
BPI BSP Exam FAQ
Official Building Performance Institute (BPI) Resources
Verify information with these official sources
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