An undercharge of refrigerant will cause low head and suction pressures, but that is not the only thing that will cause both pressures to be low. An undercharge will have low condenser liquid subcooling readings on the high side, where a dirty air filter for the evaporator will not produce low condenser liquid subcooling readings.

This LED light kit is an option for the high-velocity, low-speed (HVLS) fan line AirVolution-D. It is suited for those looking to eliminate the effects of strobing caused by nearby ceiling lights shining through the fan’s blades. 

As home-performance contractors spend considerable time sealing air leakage in homes, much of the responsibility of educating homeowners about the benefits of proper ventilation lands on them. 

Concerned about being responsible for underperforming systems, designers tend to compensate for uncertainties in the design process by adding capacity to fans. Unfortunately, oversizing fan systems creates problems that increase expenses while potentially decreasing reliability. 

People want to breathe clean, fresh air, which has thrust IAQ into the mainstream. This thriving consumer and contractor awareness is serving as a catalyst for manufacturers as they strive to develop new, cutting-edge ventilation products.

ERVs are among the fastest growing segments of improved IAQ management in buildings, according to a report from Navigant Research. According to the report, worldwide revenue from ERVs will grow from $1.6 billion in 2014 to $2.8 billion in 2020.

Floor space, HVAC equipment, and wireless communication technologies — along with incorporating imaging equipment that typically only have five-year lifespans, are just a few of the myriad of factors that must be considered when planning a hybrid OR.