Consider the following statements about the Energy Conservation Building Code (ECBC):1.It sets minimum energy standards for commercial buildings.2.Compliance with ECBC is mandatory for all residential buildings regardless of size.3.It covers components like building envelope, lighting and HVAC systems.Which of the statements given above is/are correct?

Correct Answer: B - 1 and 3 only

Quick Concept Explanation

The Energy Conservation Building Code sets minimum energy-performance requirements for applicable commercial buildings and covers envelope, lighting, electrical systems and HVAC/service systems. It is not a blanket mandatory code for every residential building regardless of size; residential energy codes are handled separately. Key relation: Whole-building compliance can use prescriptive or performance approaches depending on code version/state adoption.

Exam focus: Commercial-building scope is the key exam distinction. Common trap: Do not apply ECBC indiscriminately to all residential buildings.

Statement-wise Verification

• Statement 1 - Correct.
  It sets minimum energy standards for commercial buildings.
  The Energy Conservation Building Code sets minimum energy-performance requirements for applicable commercial buildings and covers envelope, lighting, electrical systems and HVAC/service systems.
• Statement 2 - Incorrect.
  Compliance with ECBC is mandatory for all residential buildings regardless of size.
  ECBC is principally a commercial-building energy code; it is not a blanket mandate for every residential building
• Statement 3 - Correct.
  It covers components like building envelope, lighting and HVAC systems.
  The Energy Conservation Building Code sets minimum energy-performance requirements for applicable commercial buildings and covers envelope, lighting, electrical systems and HVAC/service systems.

Core Concept

The Energy Conservation Building Code sets minimum energy-performance requirements for applicable commercial buildings and covers envelope, lighting, electrical systems and HVAC/service systems. It is not a blanket mandatory code for every residential building regardless of size; residential energy codes are handled separately.

Formula / Key Relationship

Whole-building compliance can use prescriptive or performance approaches depending on code version/state adoption.

Why the Other Options Are Wrong

Option A is incorrect because it includes incorrect statement(s) 2 and omits correct statement(s) 3. Option C is incorrect because it includes incorrect statement(s) 2 and omits correct statement(s) 1. Option D is incorrect because it includes incorrect statement(s) 2.

Exam Shortcut / Approach

Commercial-building scope is the key exam distinction.

Common Mistake

Do not apply ECBC indiscriminately to all residential buildings.

Quick Revision

Commercial Building Energy Standards is linked with ECBC, Building Energy Codes and Energy Management. Commercial-building scope is the key exam distinction.