Heat Recovery Ventilators and How They Work

Learn how Heat Recovery Ventilators work, how they're built and how to size a them using CFM or L/s metrics or Air Changes per Hour (ACH). Learn the three methods of connecting Heat Recovery Ventilators, including interconnecting with and Air Conditioner or Heat Pump.

Heat Recovery Ventilators are used to in residential and commercial properties for sensible heat recovery and to improve indoor air quality.

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HVAC ENGINEERING and CALCULATIONS
💧How to Calculate Motor Break Horsepower: https://youtu.be/3n9dlmmq4c8
💧Fan Laws, Calculate CFM, SP, RPM, HP: https://youtu.be/txnANkfsg6M
💧How to Calculate Static Pressure and CFM: https://youtu.be/6u5CksPM7Yg
💧Condensate Piping Design and Sizing: https://youtu.be/utA5X9MujXg
💧How do you define a BTU or Tons of AC: https://youtu.be/bsGfxwyUo3c
💧Sensible Heat Transfer Equation for Water: https://youtu.be/JVN9E8jdw8o
💧Sensible Heat Transfer Equation for Air: https://youtu.be/ae2_OTU87jA
💧Sensible and Latent Heat Transfer Formula for Air: https://youtu.be/iME-1I9G4Qw

CHILLERS and COOLING TOWERS
💧How Chillers Work, Air-Cooled & Water-Cooled: https://youtu.be/q-Oooe0G7_c
💧Chiller IPLV Calculation: https://youtu.be/tmOrj3FuSd8
💧Calculate Total BTU of Chiller or Coil: https://youtu.be/8nbyB964-ZY
💧Calculate GPM or TDH of Chiller or Coil: https://youtu.be/h78x7tISOWY
💧How Cooling Towers Work, Crossflow vs Counterflow: https://youtu.be/0I46O8Cnbk4

REFRIGERATION and REFRIGERANTS
💧How Electronic Expansion Valves Work: https://youtu.be/3u_m8LRa3tk
💧Refrigeration Cycle: https://youtu.be/IGqhWn0ZlfU
💧Refrigerant Piping Insulation: https://youtu.be/jadspqwvMmQ
💧New Refrigerants, Codes and Standards: https://youtu.be/ilP72QrVx1g

HVAC SYSTEMS
💧How a Variable Air Volume System Works: https://youtu.be/jXV3i9_QOhQ
💧Rooftop Packaged HVAC Units Explained: https://youtu.be/0XDOoybvXj0
💧How Heat Pumps Work: https://youtu.be/DT-5zYRA4No
💧How a Condensing Boiler Works: https://youtu.be/oRr3q3IraRU

ESTIMATING
💧HVAC Piping Unit Pricing: https://youtu.be/CcXD12JC7jw
💧HVAC Equipment Cost Database: https://youtu.be/Jgwy1mOI2j8
💧MEP Estimating Spreadsheet: https://youtu.be/wwNHuyL82Yc
💧Construction Labor Rates with Burden: https://youtu.be/z0LJperrgjk

HYDRONICS and PIPING
💧How to Read Pump Chart and Select Pump: https://youtu.be/paziP4GdYio

BUSINESS – CONSTRUCTION & CONTRACTING
💧Bid Bonds and Performance Bonds: https://youtu.be/fS9wSvUR1Cc
💧Top 3 Things to Know Before Bidding Commercial Projects: https://youtu.be/qH6hFhEqOMo
💧Top 12 Construction Bidding Websites: https://youtu.be/gM8EmySK-O4

CONSTRUCTION BASICS
💧General Layout of Construction Drawings: https://youtu.be/YVGO6cLqKGQ
💧How to Read Specifications: https://youtu.be/J1qnbg8jdm8

ELECTRICAL and CONTROLS
⚡How Variable Frequency Drives Work in HVAC Systems: https://youtu.be/DymWILTmSNc
⚡How a Power Factor Works: https://youtu.be/6LZk9YT-GkQ
⚡Ohms Law: https://youtu.be/uprC1xHwgaU
⚡3Phase Electricity – How it Works: https://youtu.be/SG9RzXrjYnQ

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