Andy Holt Archives - HVAC School

Andy Holt

Company name: Outdoor University

Position: Owner

Andy Holt is the owner of TopRate Services, which offers training services for HVAC professionals and hosts Outdoor University. Outdoor University is a soft skills training camp for HVAC professionals at any stage of their career, and it covers a range of topics from billing to customer service to representing your company professionally.

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Technician Soft Skills

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HVAC School – For Techs, By Techs

HVAC School – For Techs, By Techs

Real training for HVAC ( Heating, Ventilation, Air Conditioning and Refrigeration) Technicians. Including recorded tech training, interviews, diagnostics and general conversations about the trade.

Licensed mechanical engineer Tony Amadio joins the podcast to talk about residential exhaust codes and best practices. He also put together a presentation about the topic, which you can view at https://hvacrschool.com/exhaust.

When choosing duct materials for residential exhaust, you will want to stick to sheet metal and mind the gauge; flex ductwork can easily be damaged and will rack up a high total equivalent length in a way that sheet metal will not.

Exhaust air should always discharge outdoors, not into an attic or crawl space, and that air needs to be replaced by air entering the conditioned space; makeup air is the air we draw in to replace the exhausted air, and we need appropriate undercuts to make sure we’re getting the right amount of makeup air.

Domestic cooking exhaust may also come in a few different varieties, each of which has different code requirements (with downdrafts needing much more CFM per ASHRAE). Range hood shape is also important for capturing as many particles as possible, but makeup air kits are usually unnecessary (and could be more of a hassle than they’re worth).

When it comes to bathroom exhaust, the CFM requirements differ between residential and light commercial, as well as intermittent and continuous exhaust. Steam generators may also be present, and they require extra consideration.

Tony and Bryan also cover:

Tony’s education and career background
Discharging and terminating exhaust air
Insect screens
Makeup air in light commercial applications
Clothing dryer vs. bathroom vents
Ductless clothes dryers and condensate piping
Home Ventilation Institute (HVI) guidelines
Pressure imbalance in a structure
Residential vs. light commercial bathroom exhaust
Static pressure, blower sizing, and exhaust duct sizing

You can ask Tony questions by email at anthony.amadio@peloadcalcs.com.

Learn more about the 5th Annual HVACR Training Symposium at https://hvacrschool.com/Symposium24.

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Residential Exhaust Codes and Best Practices

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Residential Exhaust Codes and Best Practices

09/28/2023

Bryan Orr

Wiring Refrigerated Cases w/ Nathan & Phil

09/14/2023

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Things to Keep out of the System – Class

09/07/2023

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ACH (Air Changes Per Hour) – Short #174

09/05/2023

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Oil Return and Refrigerant Charge in VRV w/ Roman Baugh

08/31/2023

Bryan Orr

Magical Air Cleaning Oxides? – Short #173

08/29/2023

Bryan Orr

Can Filters Capture Viruses? – Short #172

08/22/2023

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Heat Pumps + Inverters w/ Joey H

08/17/2023

Bryan Orr

Get Air Where it Needs to Go W/ Joey H.

08/10/2023

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Business Round Table – Tersh, Peterson, Holt

08/03/2023

Bryan Orr

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Venom Pack Condenser Cleaner is a high foaming pure concentrate liquid designed to tackle the toughest soils. The proprietary blend of specialty detergents will liquify heavily embedded grease and grime to restore heat transfer and increase the efficiency of the coil.

Viper Condensate Pan and Drain Treatment
Viper Condensate Pan and Drain Treatment is a sprayable gel. It coats the pan, p-trap and drain piping with a lubricative film to improve flow and prevent future soil adhesion. The slow dissolving enzyme gel will outperform and outlast conventional tablets and strips.

Nylog Blue Gasket -Thread Sealant for AC/R Systems
One drop of Nylog on your rubber hose gaskets prior to attaching your core tools, hoses or vacuum gauge will assure that things do not bind or leak during evacuation. Derived from refrigeration grade lubricants. Non-hardening, non-drying fluid which bonds tenaciously to many different substrates. Typically, one drop of Nylog can be stretched about three feet before breaking.

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Find out more about the Innovative NAVAC line of Vacuum Pumps

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