This industry-consensus standard details necessary inspection and maintenance for residential HVAC systems. The standard includes a series of checklists for varied types of residential HVAC systems, that specify minimum tasks to be performed and recommend corrective actions if deficiencies are found. Contractors may use this standard to demonstrate minimum maintenance requirements and the need to perform certain servicing tasks. The checklists also allow contractors to highlight added services offered in maintenance and service contracts.

1.0 PURPOSE
The purpose of this standard is to establish minimum inspection requirements in the maintenance of HVAC equipment found in one-family and two-family dwellings of three stories or less.

2.0 SCOPE
2.1 This standard provides minimum requirements for the inspection, by appropriately licensed contractors, of residential HVAC equipment found in one- or two-family dwellings of three or fewer stories.

2.2 This standard includes checklist tasks for inspecting, testing, and measuring electrical, controls, mechanical, venting, air distribution, and piping systems of residential HVAC systems. The checklists also provide recommended corrective actions which the contractor shall present to the homeowner to remedy identified faults like cleaning, or adjusting, and/or replacing equipment and components on a periodic basis.

2.3 This standard presumes that the HVAC system was designed, installed, and tested in accordance with original equipment manufacturer's (OEM) instructions, applicable codes, and other industry standards.

2.4 This standard shall not be used to circumvent safety, health, environmental, or the equipment manufacturer's requirements.

2.5 This standard excludes steam distribution heating systems.

From the Foreword
Heating Ventilating and Air-Conditioning (HVAC) contractors use different approaches for inspecting and maintaining HVAC systems. There are many types of "seasonal tune-ups," "clean and checks," and "maintenance services" performed on HVAC equipment. However, there was no way to determine if the minimum level of inspection tasks had been performed. This standard was written to establish a minimum level of acceptable compliance for HVAC equipment maintenance inspections.

For the public good, it is essential that residential HVAC systems support a comfortable, healthy indoor environment and operate efficiently throughout its lifecycle. ACCA developed this standard to provide a nationally recognized, manufacturer-endorsed set of inspection tasks which would meet this need. From this base, consumers can compare the value of the additional recommended corrective actions needed to remedy identified faults. For contractors, it provides a common platform for creating a maintenance program, allowing for bundling different recommended corrective actions at different fee structures.

HVAC contractors who perform maintenance on residential HVAC systems should be properly licensed or, where necessary, certified. These contractors should strive to have the highest quality technician perform this standard's tasks for their customers. Technicians who are certified by an industry- recognized national program have demonstrated that they posses a body of knowledge which supports proper implementation of this standard.

Some HVAC systems are unable to achieve the manufacturer's performance objectives because the system:

• Was incorrectly designed, selected, or installed, or
• Is beyond the normal service life, or
• Has suffered neglect for long periods of time.