- What Is an AC & Heat Pump Professional?
- Who Issues the Credential and How
- Eligibility and Prerequisites
- Exam Format: Online and Field Components
- The Six Exam Domains
- Passing Score Requirements
- Certification Length and Renewal
- Who Hires AC & Heat Pump Professionals
- A Domain-Aware Approach to Preparation
- Frequently Asked Questions
- BPI issues this credential; new candidates take 100 online questions in two hours plus a two-hour field exam.
- EPA Section 608 Type II or Universal certification is required before you can sit for this credential.
- Online passing score is 70%; the field exam requires 70% overall with at least 85% on CAZ and CO sections.
- Certification lasts three years; renewal can waive the online exam with 30 relevant CEUs.
What Is an AC & Heat Pump Professional?
The AC & Heat Pump Professional credential is a building-performance certification issued by the Building Performance Institute, Inc. (BPI). It recognizes technicians who can evaluate and work on cooling and heat pump systems not as isolated equipment, but as components inside a whole-building system that interacts with insulation, ventilation, combustion appliances, and occupant health and safety. If you've landed on this page after searching a shared acronym, note the identity pin clearly: this article covers BPI's Air Conditioning and Heat Pump Professional certification specifically, administered through BPI Test Centers - not any other program that happens to share the same initials.
For a broader breakdown of terminology and how this credential fits into BPI's certification family, see AC & Heat Pump Professional Meaning and What Does AC & Heat Pump Professional Stand For?.
Who Issues the Credential and How
BPI administers the AC & Heat Pump Professional exam through its network of BPI Test Centers, following the specifications in the Core Certification Scheme Handbook (revised April 9, 2026). That handbook governs both the pathway structure and the domain weighting used on the online exam. Because BPI periodically revises this handbook, candidates should always confirm current scheduling logistics through the official channels rather than assuming details from a prior cycle still apply - a topic covered in more depth in AC & Heat Pump Professional Exam Dates 2026: Testing Windows, Deadlines & Scheduling.
This is a practical, applied credential rather than a purely academic one. The exam blends multiple-choice knowledge questions with a separate field examination performed on real or simulated equipment, which is why preparation has to cover both bookwork and hands-on procedure.
Eligibility and Prerequisites
Before you can sit for the AC & Heat Pump Professional exam, BPI requires an EPA Section 608 Type II or Universal certification. This is a firm prerequisite tied to refrigerant handling, not an optional recommendation. Notably, BPI does not mandate a specific training course to qualify - candidates can prepare through self-study, employer training, technical school coursework, or independent field experience, as long as they arrive ready to demonstrate the required knowledge and skills.
- EPA Section 608 Type II or Universal certification (required)
- No mandatory training course, though structured preparation is strongly advised
- Comfort with both closed-book online testing and open-book field procedures
For the full eligibility breakdown, including how the requirement interacts with the exam pathways, see AC & Heat Pump Professional Requirements 2026: Eligibility, Prerequisites & How to Qualify.
Exam Format: Online and Field Components
New candidates follow a two-part structure:
- Online exam: 100 multiple-choice questions, completed in two hours, closed book except for BPI Standards made available through the testing platform.
- Field exam: A separate two-hour, open-book practical examination performed without assistance from another person.
Candidates who already hold a BPI Core certification follow a shortened online pathway: 50 questions in 90 minutes, plus the same field examination requirement. This distinction matters for planning your study timeline, since the shorter pathway compresses review time considerably.
| Pathway | Online Questions | Online Time | Field Exam |
|---|---|---|---|
| New Candidate | 100 | 2 hours | 2 hours, open book |
| Existing BPI Core Holder | 50 | 90 minutes | 2 hours, open book |
Both components must be completed to earn certification, and BPI requires that you complete certification within 12 months of your first examination attempt - a deadline worth building into any study calendar. For a deeper dive into how difficult candidates find this two-part structure in practice, read How Hard Is the AC & Heat Pump Professional Exam? Complete Difficulty Guide 2026.
Key Takeaway
Treat the online exam and field exam as two separate study tracks. The online exam rewards memorized standards and calculations; the field exam rewards muscle-memory procedure under open-book conditions.
The Six Exam Domains
The domain weights below apply specifically to the online examination. Understanding how BPI allocates questions across domains is one of the most concrete ways to prioritize study time, and it's the core subject of AC & Heat Pump Professional Exam Domains 2026: Complete Guide to All 6 Content Areas.
Domain 1: Building Science (15%)
Tests intermediate-level understanding of how heat, air, and moisture move through a structure and interact with AC and heat pump performance.
- Building envelope basics and how they affect equipment load
- Psychrometrics and moisture dynamics
Domain 2: AC & Heat Pump Systems and their Interaction with Other Building Systems (15%)
Covers how cooling and heat pump equipment behaves alongside ductwork, ventilation, and combustion appliances at an intermediate level.
- Backdrafting and depressurization risks
- Ductwork sizing and its effect on system performance
Domain 3: Measurement and Verification of Building Performance (20%)
Application-level questions on collecting and interpreting field data.
- Airflow measurement techniques
- Refrigerant charge verification methods
Domain 4: BPI National Standards and Project Specifications (20%)
Requires applying BPI Standards to real project scenarios, not just recalling definitions.
- Standards references available during the online exam
- Specification language used in project documentation
Domain 5: Optimizing the Installation, Operation, and Maintenance of Building Systems (25%)
The largest domain on the online exam, spanning fundamentals through application-level optimization questions.
- Commissioning and startup best practices
- Maintenance procedures that preserve system efficiency
Domain 6: Health & Safety (5%)
A smaller but non-negotiable fundamentals domain focused on technician and occupant safety.
- Combustion safety basics
- Safe work practices around mechanical systems
Passing Score Requirements
The online exam requires a 70% passing score. The field exam has a dual requirement: 70% overall, plus a minimum of 85% on the CAZ (Combustion Appliance Zone) and CO (Carbon Monoxide) sections specifically. This means you can't compensate for weak combustion-safety performance with strong scores elsewhere on the field test - those two sections have their own hard floor. A full breakdown of scoring mechanics is available in AC & Heat Pump Professional Passing Score 2026: Exactly What You Need to Pass.
Key Takeaway
Because CAZ and CO sections carry an 85% floor on the field exam, dedicate disproportionate practice time to combustion safety procedures even though Health & Safety is only 5% of the online exam.
Certification Length and Renewal
The AC & Heat Pump Professional credential is valid for three years. At renewal, candidates have options to reduce the retesting burden:
- 30 relevant CEUs can waive the online examination requirement entirely.
- 3,000 verified relevant work hours completed during the preceding three years can waive the field examination - but only for the first or second renewal cycle.
The renewal application fee is $360 for a one-certification renewal when the field exam is waived; if the online exam is still required at renewal, that exam carries an additional fee on top of the renewal fee. This renewal fee is distinct from the initial examination fee structure. For complete cost planning across both initial certification and renewal cycles, see AC & Heat Pump Professional Certification Cost 2026: Complete Pricing Breakdown.
Who Hires AC & Heat Pump Professionals
Because the certification blends refrigerant-handling competency (via the EPA 608 prerequisite) with whole-building diagnostic skill, holders typically work for:
- Home performance and weatherization contractors who install or service AC and heat pump systems as part of broader efficiency retrofits
- HVAC contractors bidding on utility or government efficiency programs that require BPI-credentialed staff
- Energy auditing firms that need technicians who can assess mechanical systems alongside envelope performance
- Utility-sponsored rebate and quality-assurance programs that verify installation quality against BPI Standards
If you're weighing whether this certification will translate into better job prospects or pay in your market, review AC & Heat Pump Professional Salary Guide 2026: Complete Earnings Analysis and Is the AC & Heat Pump Professional Certification Worth It? Complete ROI Analysis 2026 before committing time and money to preparation.
A Domain-Aware Approach to Preparation
Rather than studying every domain equally, allocate time proportional to both weight and difficulty. Domain 5 (Optimizing Installation, Operation, and Maintenance) carries the heaviest online weight at 25%, while Domains 3 and 4 together account for 40% and both sit at the application level - meaning you need to practice applying standards and interpreting measurements, not just memorize definitions.
Building Science & Systems Interaction
- Review envelope basics and psychrometrics (Domain 1)
- Study backdrafting and duct interactions with combustion appliances (Domain 2)
Measurement & Standards
- Practice airflow measurement and refrigerant charge verification calculations (Domain 3)
- Work through BPI Standards references you'll have access to during testing (Domain 4)
Optimization & Health/Safety
- Drill commissioning, startup, and maintenance scenarios (Domain 5)
- Focus heavily on combustion safety and CAZ/CO procedures given the field exam's 85% floor (Domain 6)
Field Simulation & Timed Practice
- Run timed 100-question practice sets that mirror the two-hour online format
- Rehearse open-book field procedures without outside assistance
For a structured, week-by-week plan built specifically around these domain weights and the two-part exam format, see the full AC & Heat Pump Professional Study Guide 2026: How to Pass on Your First Attempt. And if you want a fast-reference summary of formulas, standards citations, and safety thresholds to review right before test day, the AC & Heat Pump Professional Cheat Sheet 2026: One-Page Review of Must-Know Facts condenses the highest-yield facts into one page.
If you want data on how candidates actually perform against these passing thresholds, AC & Heat Pump Professional Pass Rate 2026: What the Data Shows lays out what's publicly known without speculation. And for readers who arrived here from a related search, related explainer pages include What Is AC & Heat Pump Professional?, What Is A AC & Heat Pump Professional?, and AC & Heat Pump Professional Certification.
Frequently Asked Questions
No. BPI does not mandate a particular training course. You do need EPA Section 608 Type II or Universal certification, but how you prepare - self-study, employer training, or a prep course - is up to you.
New candidates take a 100-question online exam in two hours. Candidates who already hold a BPI Core certification take a shorter 50-question, 90-minute online exam. Both pathways require the same separate two-hour field examination.
Yes. The field exam requires 70% overall, but also at least 85% specifically on the CAZ and CO sections. Falling short on those sections can mean failing the field exam even if your overall score clears 70%.
Three years. At renewal, 30 relevant CEUs can waive the online exam, and 3,000 verified relevant work hours can waive the field exam for the first or second renewal cycle.
Yes. Candidates must complete certification within 12 months of their first examination attempt, so both the online and field components need to be finished within that window.