The ACCA HVAC Blog is focused on helping professional contractors run smarter, better businesses. Led by contractors themselves, who know firsthand the technology and cultural changes that are transforming old-school trades into a high-tech, dynamic, and driven industry. ACCA HVAC Blog is where forward-thinking contractors go for daily content to feed their passion for success.
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EPA Proposes One Year Sell-Through for Variable Refrigerant Flow Systems Under AIM Act
Contractors may get another year to sell certain Variable Refrigerant Flow (VRF) systems. Last week, the Environmental Protection Agency (EPA) proposed a rule that would allow a one-year sell-through period for VRF systems using HFCs with a global warming potential (GWP) of 700 or greater. ACCA is tracking this proposed rule and its potential impact on contractors.
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What kind of damper are you using?
In HVACR systems, the term “damper” can refer to various types of devices used to regulate airflow. Here are some common types of dampers, including those that might come up in a discussion related to Manual D®, which is a methodology for sizing residential duct systems.