california real id at aaa office hvac school

california real id at aaa office hvac school

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  What is HVAC? – Heating, Ventilation, and Air Conditioning is the technology and trade of indoor environmental control. HVAC systems are designed and installed by degreed or certificated technicians to promote clean, comfortable, efficient airflow in offices, homes, apartments, and commercial buildings.

  Getting into HVACR can give you a shot at living your dream of working in a high-skilled trade where your mechanical aptitude and problem solving skills earn you the respect you deserve. It also means joining a growing industry where technology is evolving and companies are competing for talented mechanics and installers.

  There is nothing one-size-fits-all about heating, cooling, ventilation and refrigeration. The systems used throughout the country are different because the heating and cooling needs are different, and what works in one industrial application may not solve the problem in another. On-call service techs, installation contractors, and in-house engineers have no choice but to become experts in their niche, and to continually refine their expertise on the job as technology and efficiency standards change.

Welcome to HVAC School, The place to learn some things you’ve forgottenalong the way, as well as remind you,of some things you forgot to know in the first place.

  Neil Comparetto and John Semmelhack of the Comfort Squad join Bryan to discuss high-quality value design in a high-performance home. They explain how they design HVAC systems (heat pumps) for low-load homes in ways that are affordable, efficient, and comfortable.

  High-performance, low-load homes need to be energy-efficient AND comfortable, and it can be a challenge to get both. Manual J calculations aren’t as common as they probably should be, and it can be difficult to get accurate data about air leakage, power consumption, and radiant gains as well. So, John and Neil try to collect their own data and do aggressive load calculations to avoid the fudge factors that are all too common. The air velocity inside the ducts tends to be lower in these sorts of systems.

  When you have relatively low airflow in the ductwork of high-performance homes, you don’t need as many ducts or for the ductwork to be particularly large. With minimalistic ductwork, supply register placement, face velocity, and throw become very important, especially because those factors are responsible for air mixing. When the duct design conditions are right and the load has been matched, you typically get long runtimes and good air mixing.

  In many cases, John and Neil use variable-speed motors in their outdoor units that allow for high heating performance. The capacity ranges are wide, allowing the units to run even during exceptionally low-load conditions. They also use flex ducts due to their pre-insulation, noise suppression, and inexpensiveness; they just try to keep it sealed and avoid compressing the ductwork.

  Neil, John, and Bryan also discuss:

  Monitoring load conditions with softwareDesign considerations for filter grilles and central returnsRoom pressurization and airflow testingTransfer grillesThe Coanda effect and curved-blade registersVent sizingFlex duct installation best practicesDuct fittingsERVs

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california real id at aaa office hvac school