Library

Web article describing common issues that can cause refrigerant system flare joints to leak.

Performance rating standards for unitary air-conditioners and unitary air-source heat pumps, including definitions, classifications, testing, rating, and operating requirements, as well as minimum data requirements for published ratings and markings.

Guidebook covering basic principles and data used in the HVAC&R industry. This is the 2023 edition of the handbook, which can be purchased physically or digitally at the reference link in versions using either I-P units of measurement or SI units of measurement.

This is a federal tax credit for complying air source heat pumpe. Units located in the "North" must meet ENERGY STAR's cold climate heat pump criteria.

Standard establishing test methods for determining air leakage in duct systems using fan pressurization in low-rise residential and commercial buildings.

AHRI-hosted directory of residential products meeting CEE's highest tier

Specification defining performance and reporting requirements to meet the voluntary “Cold Climate Air Source Heat Pump Specification” (ccASHP Specification) for air source heat pumps suited to heat efficiently in cold climates (IECC cz 4 and higher).

Webpage describing the advantages and disadvantages of ductless mini-split air conditioner.

Website that lists references that can help you determine how to control you indoor air quality while combating an emergency.

Factsheet describing mini split heat pumps and their benefits for consumers.

ASHRAE Q&A addressing HVAC filtration and disinfection for reducing the spread of COVID-19.

This five-page brochure contains basic information on flood cleanup with illustrations and links to more detailed information.

Webpage providing basic information on various types of heat pumps and their applications in Massachusetts.

Factsheet describing how to partially install a heat pump in a manufactured home in the manufactured home factory.

Database compiling extended capacity data for numerous cold climate heat pump manufacturers and models.

Fact sheet describing best practices in installing leak-free refrigerant systems, including specifics on creating flare joints and brazed joints, pressure testing, vacuum testing, and charging the system with refrigerant.

EPA coronavirus Q&A discussing the role of HVAC filters in dealing with COVID-19.