Air Conditioning and Heating Loads

https://www.acca.org/standards/technical-manuals/manual-j

Manual J Residential Load Calculation - ACCA Technical Manuals ACCA's Manual J - Residential Load Calculation is the ANSI standard for producing HVAC systems for small indoor environments

https://www.hvac.com/expert-advice/2025-refrigerant-change/

2025 Refrigerant Changes: How Does It Affect HVAC Prices Starting in 2025, you will not be able to buy an HVAC system that uses R-410A, causing prices to increase.

https://www.carrier.com/residential/en/us/glossary/r-454b-refrigerant/

R-454B Refrigerant | R454B Refrigerant | Carrier Learn about R-454B refrigerant, also known by the trade name Puron Advance, in our R454B refrigerant guide.

https://hvacdesignpros.com/manual-j-load-calculations-required-state-code/

Manual-J Load Calculations Required by State Code Manual-J is required by state code in 29 states where the 2009 IECC has been adopted. HEP Manual-J training will ensure you are compliant.