Christopher Cadwell's Blog (9)

HVAC and DC Fan Motors

Here are links to my latest posts on how these motors can be used for retrofitting in existing HVAC systems.

HVAC Savings Upgrades – Cutting Fan Watts In Half or More 

In this post I cover how the savings can be dramatic, and the most important part is to get duct pressures low.…

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Added by Christopher Cadwell on April 19, 2012 at 6:14am — 2 Comments

Part 2 of: The "1-2 Punch" to HVAC "Not Understoods"

Proper sizing of HVAC equipment is smaller, and smaller means more comfort.

Probably the usual thought in the HVAC industry by technicians is that the units need to be made bigger for comfort. Perhaps this comes from the idea of coming home from work, and needing a set back thermostat to do its magic, and get the home comfortable fast,…

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Added by Christopher Cadwell on December 13, 2011 at 8:30am — 4 Comments

Part 1 of: The "1-2 Punch" to HVAC "Not Understoods"

HVAC Delivery System Losses -

This is the Air Pressures, Duct System, the Boots, the Registers, Equipment Cabinets, Air Balancing, Temperature rise and drop parameters, etc. 

 

This is a greatly overlooked and not understood part of a system, even by most HVAC Journeymen and contractors. How do we come to this conclusion?…

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Added by Christopher Cadwell on December 1, 2011 at 10:04am — 1 Comment

Notable Results in AC Training

The final survey results of the second week of students in the High Performance HVAC classes.
Here are some notable results of what the students felt that they got out of the course.
  • How to reduce # of registers while improving comfort. 
  • Importance of velocity - amount needed to properly mix air.
  • How to select register types to control noise and performance. 
  • Whole house as…
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Added by Christopher Cadwell on November 27, 2011 at 9:00pm — No Comments

Zero Duct Leakage - Yes it is Possible.

What does this mean? How can we get to zero duct leakage?

 

When the testing equipment is not small enough to accurately measure the leakage - then it is called zero - usually below 10 CFM of leakage.

Essentially every seam of all the metal and every inside connection of the…

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Added by Christopher Cadwell on November 22, 2011 at 10:30pm — No Comments

Another Week of Awesome AC Training

Another week ahead with the master HVAC installer and trainer - Rick Chitwood.

This is no ordinary course room.* This is the house about to be retrofitted. We just got through the day of reasoning on the background as to why we install AC in…

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Added by Christopher Cadwell on November 22, 2011 at 6:30am — No Comments

Super Efficient HVAC is Easy

Attending a week long class where veteran trainer Rick Chitwood is moderator has been entertaining and joyful. In the class which is inside a house that is being retrofit completely we are now designing and installing a super efficient HVAC system.…



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Added by Christopher Cadwell on November 17, 2011 at 9:30pm — 9 Comments

Efficiency - What's missing, maybe?

What can we learn and use from world class organizations, and how they got there? How does this apply to energy efficiency rating and auditing?

The bottom line: They produced and sold what the customer actually wanted and was willing to pay for. There are a lot of other things they did, but all complexities funneled back into the purpose of delivering something…

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Added by Christopher Cadwell on November 9, 2011 at 8:00am — 2 Comments

Selling AC Retrofits - Notes from the field.

First I talk of safety. I mention old furnaces and CO possibilities, etc. This will usually make them sour up a bit because it is slightly a sales pitch.

Then I usually talk to homeowners about the hot and cold rooms. This is a big button and an easy one to push and get them talking. This adds to the sourness but gains…
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Added by Christopher Cadwell on October 25, 2011 at 10:30pm — 1 Comment

Home Energy Pros

Home Energy Pros was founded by the developers of Home Energy Saver Pro (sponsored by the U.S. Department of Energy,) and brought to you in partnership with Home Energy magazine.

Latest Activity

Nate Adams commented on Scott Mellberg's blog post Lessons from Energy Efficiency Advisors: Getting Homeowners Onboard with Home Performance
"Interesting conversation. David, I completely understand where you are coming from. To me it's…"
2 hours ago
John Proctor commented on Kurt Shafer's blog post What is your opinion about members promoting products here?
"Kurt: So my question is how does your device work? PSC motors generally do not reduce their…"
6 hours ago
John Proctor commented on Christopher Morin's blog post How do You Test a TXV?
"Correction 32 is the melting point, not the saturation temperature."
6 hours ago
Richard Beyer replied to Mike Kandel's discussion Our Homes Suck – And That's Why Our Kids Have Sinus Problems
""I have no interest in bantering or arguing with you." AGREED! I look at these…"
8 hours ago
tedkidd replied to Mike Kandel's discussion Our Homes Suck – And That's Why Our Kids Have Sinus Problems
"Todd, it appears Richard is more about getting the last word than about learning a new thing.…"
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Todd Collins replied to Mike Kandel's discussion Our Homes Suck – And That's Why Our Kids Have Sinus Problems
"Richard,  I don't believe I am missing any points.  As I mentioned... I have no…"
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Richard Beyer replied to Mike Kandel's discussion Our Homes Suck – And That's Why Our Kids Have Sinus Problems
"Todd, Your missing the point. I can only suggest for you to read all the links attached within that…"
9 hours ago
Tom Conlon replied to Tom Conlon's discussion Whole House Fans - Love 'Em or Not?
"Excellent snapshot, Griffin. You didn't happen to notice the fan manufacturer's name on…"
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Brandon Walton replied to Brandon Walton's discussion 12 Things Every Home Performance Contractor Should Have on Their Work Truck
"Thanks Don! "
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Griffin Hagle replied to Tom Conlon's discussion Whole House Fans - Love 'Em or Not?
"I was aware of but unfamiliar with them until moving to Southern California in 2012. After seeing…"
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tedkidd commented on Scott Mellberg's blog post Lessons from Energy Efficiency Advisors: Getting Homeowners Onboard with Home Performance
"David,  I don't think forcing people to do things works out well for anyone.  Any…"
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David Eakin commented on Scott Mellberg's blog post Lessons from Energy Efficiency Advisors: Getting Homeowners Onboard with Home Performance
""I believe it is our job to educate the consumer, understand the problems, help them…"
17 hours ago

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