Was I WRONG? Can a Capacitor FAIL with HIGH MFD?

April 30, 2021

In this video we test a dual run capacitor that SEEMS to show a higher microfarad test measurement than the rating, but we discover something interesting.

Comments

Most popular videos

See all +

Tips for Cleaning an Air Conditioning Common Drain

Gas Furnace Overview w/ AC Service Tech

Motor Overload and Safeties – Kalos Meeting

Don’t Overfill Refrigerant Recovery Cylinders The Easy Way

How to Replace an AC Condensing Fan Motor

How to Braze Air Conditioning Copper

How to Leak Test an AC With Nitrogen Pressure

How to Properly Pipe a Drain on a Fan Coil

4 Silly Mistakes of The Green HVAC Tech

How to Install an AC Disconnect

Why a Hard Shut Off TXV Closes

The Importance of SST (Evaporator Temperature) and Using a Scale (Kalos Meeting)

Adjusting Gas Pressure on a Standard and Gemini Furnace Valve

How a Heat Pump Reversing Valve Works

How and When to Use a Schrader Core Removal Tool

Why Does The Evaporator Coil Freeze (And How to Diagnose It)

How to Measure Total External Static Pressure (TESP)

Prevent this Common Manometer Mistake

Facts About Fusite (Compressor Electrical Pass Through Connections)

See Inside a Biflow/Heat Pump Filter Drier

Flammable Refrigerant Safety Basics – Kalos Meeting

How is 208 volts different than 230/240 volts?

Tips for Hiring & Getting Hired

How is a 3-Phase Motor Different than Single Phase

HVAC Class 11/24/2020 – Electrical Review

How to Measure Gas Pressure – Kalos Meeting

What is Common, Start and Run?

Perfect Flares Every Time w/ NAVAC NEF6LM

Ask Bryan Anything Live Call-in from 11/21/2020

How to Build a Sheet Metal Coil Case From Scratch

Basic Electrical Circuit Terms

The #1 Key to Service Success?

How To Keep Motors Running Cool And Efficient

Talk Through The Refrigerant Circuit Using The “Glass Tube” trainer

Top 10 HVAC Tech Tips for 100K

Installing a Rectangle to Round Transition into an Existing Metal Duct

How Humidity Impacts The Weight of Air

Testing Home Pressure Imbalance w/ Genry Garcia (Spanish)

Some of Bryan’s Favorite New Tools Giveaway Meeting

Bert Teaches The Basic Refrigerant Circuit + Safety

Setting a Refrigerant Charge by Subcool

Soft Skills Can Be Hard (Disciplines of Growth)

How to Fabricate a Metal Supply Plenum From Scratch

Delivered Capacity Basics – Kalos Meeting

Sequencer Facts – They Aren’t All The Same

Wire Routing & Float Switch Positioning

Dual Voltage and Part Start 3-Phase Motors

Apprentice Program Day 1 – Using Your Resources w/ Jason Obrzut

Bert Cleans Out His DIRTY Work Van (And You Should Too!) #BERTLIFE

Liquid Line VS. Discharge Line

Tips for Proper AC System Cleaning – Kalos Meeting

Motor Replacement Tips & Tricks – Kalos Meeting

Better Duct Installation Practices – Kalos Meeting

THIS Is How My FIRST WEEK As An HVAC Apprentice Went (I’m Being Trained By WHO?!)

How to Find Refrigerant Leaks – Kalos Meeting

Critical System Diagnosis for Residential HVAC

Diagnosing Open & Short Circuits

Installing a Mitsubishi One-Way Ceiling Cassette In An Unfinished Room (You Can See EVERYTHING!)

How to Use a Blower Door (Como usar el Blower Door)

How to Stop Drain Snot (Bacterial Zoogloea)

Symptoms of Low Evaporator Airflow

Preventing Flooding On a Walk-In Call

Diagnosing and Replacing a Run Capacitor

Symptoms of Low Refrigerant Charge

Preventing, Finding & Repairing Refrigerant Leaks

Proper Use of Manometers for HVAC Technicians

Tool Talk Live – Probes, Bags, Hand Tools, Power Tools & More

Cleaning BARD units with Venom Packs

Electrical Basic Concepts – RSES NATE Prep

Selling, Upselling, IAQ , Hardstart Kits and More

Cutting & Installing a Rectangle Duct Connection

How to Make a Leak Free Canvas Duct Connector

Cooling Commissioning Measurements Walk Through w/ MeasureQuick

How to Checkout Blower Settings Using a Manometer

Recovery Best Practices & Giveaway

Introduction to the Fieldpiece Joblink Manometer Set

HVAC SCHOOL MONEY TALK – Don’t Make This Common Mistake

Testing out a High Performance HVAC Installation

Commercial Refrigerant Retrofit Options in a Crisis Economy #LIVE

HVAC Myth Busting #2 – Volts Go Down, Amps Go Up

Rectorseal RSH 50 Installation

Setting Up Residential Demand Ventilation with Laser Egg

DUCTLESS Control and Humidity Hack with Cielo Breez

Rectorseal Surge Protector Installation

HVAC Contractors Guide to COVID-19

DIY Cloth Mask with HEPA Pocket

How to Make an Indoor Air Cleaner the Cheap and Easy Way

Electrical Diagnostic Thinking

Human Comfort Basics – RSES NATE Prep

5 Install Mistakes that Kill Systems

UV Part 2 – Honest UV Facts from a Manufacturer

UVC Air Purification – Live Podcast Part #1

How to Make a Metal Duct Transition in the Field

Reversing Valves (RSES NATE Prep)

Sunday Coil Cleaning #BERTLIFE

Liquid Line Solenoid on Long Refrigerant Lines

Condensing Unit Install Practices (RSES NATE Prep)

HVAC Motor Types (RSES NATE Prep)

Relative Humidity in the Supply Air Stream

Advanced Combustion Analysis (HVAC) w/ Jim Bergmann

Advanced MeasureQuick Diagnosis w/ Jim Bergmann

How to Flow Nitrogen While Brazing

Compressor Tear Down (Don Gillis / Trevor Matthews)

Compressor Facts and Troubleshooting (Don Gillis / Trevor Matthews)

Nikki Krueger – The Dripping Point

Troubleshoot a Grounded (Shorted to Ground) Compressor

Using Power Factor to Check Capacitors Under Load

Straight Cool Air Conditioning Schematic (Carrier)

Charging During Low Outdoor Ambient w/ Charging Jacket

Recovery Machine Speed Race 🏁NAVAC NRDD Digital vs. Appion G5 Twin

Is There Mold in my Ducks! 🦆(Ducts)

A thermostat miswire and distracted diagnosis #BERTLIFE

Cleaning large coils with CoilPro

Inductive Reactance in Real Life

50K Subscriber Special & Behind the Scenes Tour

Compressor Won’t Run Diagnosis

A Blower and Heat Strip Dangerous Mistake

How to adjust a TXV, TEV or TX Valve

5 HVAC/R Terms That Sound Worse Than They Are

Fieldpiece Joblink Firmware Update Demo

Check out our most recent video

How to Evacuate an AC system, Full Vacuum Procedure

Our latest Podcast

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.

Chris Hughes and Steve Rogers from The Energy Conservatory discuss TEC’s TrueFlow technology and its crucial role in predicting airflow issues in the sales process, particularly for heat pump retrofits. They explain how the TrueFlow app helps contractors accurately measure both static pressure and airflow in existing systems, enabling them to predict whether proposed equipment changes will work effectively. This is especially vital when considering the growing trend of replacing gas furnaces with heat pumps, as the airflow requirements can differ significantly.

The conversation delves into a detailed example of replacing an 80% efficient 48,000 BTU furnace with a heat pump. They demonstrate how the airflow requirement would nearly double from 652 CFM to 1,200 CFM, potentially causing the static pressure to quadruple due to Fan Law 2 principles. This dramatic increase could lead to significant performance issues if not properly addressed during the system design phase. The experts emphasize that using TrueFlow during the sales process allows contractors to identify potential problems and necessary modifications before installation rather than discovering issues during callbacks.

The discussion also covers the ideal workflow for system assessment and sales, starting with customer comfort evaluation and proper load calculations. It’s important to reduce loads through envelope improvements when possible, particularly in cold climates where heat pump retrofits are becoming more common. Proper system sizing often means going smaller rather than larger, contrary to common industry practices, and the worst HVAC systems are often found in expensive custom homes rather than tract housing.

Key Topics Covered:

TrueFlow technology and its role in system forecasting
Fan Law 2 and its impact on static pressure when changing airflow
Heat pump retrofit challenges and considerations
The importance of accurate load calculations
Dual fuel systems as a solution for cold climates
The relationship between airflow and static pressure
Sales process integration of technical measurements
Common issues with oversized equipment
The importance of envelope assessment
Methods for reducing system loads
Proper duct sizing and modification strategies
The role of proper filter sizing and selection
The benefits of flat-rate pricing for duct modifications
Training resources and support available for TrueFlow users

Check out TEC’s YouTube channel at https://www.youtube.com/@energyconservatory, and you can visit TEC’s website at https://energyconservatory.com/.

Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool.

Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android.

Search Episodes

How to Predict Air Flow Issues in the Sales Process

11/21/2024

Bryan Orr

MCA is 27 and the Breaker is a 50A – Short #219

11/19/2024

Bryan Orr

Deploying Surge Protection & Voltage Monitoring w/ DITEK

11/14/2024

Bryan Orr

Pumping vs. Compression – Short #218

11/12/2024

Bryan Orr

Building Tech Confidence w/ Refrigeration Mentor

11/07/2024

Bryan Orr

Molecular Transformator – Short #217

11/05/2024

Bryan Orr

Surge Protection Basics w/ DITEK

10/31/2024

Bryan Orr

Q&A – Am I Toxic For Caring? – Short #216

10/29/2024

Bryan Orr

App Based HVAC Learning

10/24/2024

Bryan Orr

Q&A – Apps for Doing Proper Loads – Short #215

10/22/2024

Bryan Orr

Search Results placeholder

Was I WRONG? Can a Capacitor FAIL with HIGH MFD?

Subscribe to our Youtube channel