John Proctor
  • San Rafael, CA
  • United States
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Latest Activity

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 power as fast as they reduce their flow. How do you decide what the optimum airflow is?"
Tuesday
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."
Tuesday
John Proctor commented on Christopher Morin's blog post How do You Test a TXV?
"Oh yes one more item. There has to be a combination of water and ice to achieve 32 degrees F. That is the saturation temperature. Ice alone can be much colder than 32 degrees F. ProctorEng.com"
Jul 24
John Proctor commented on Christopher Morin's blog post How do You Test a TXV?
"Thank you for the nice post. Remember that the important thing is the actual superheat that exists entering the compressor is what we really want to control. Superheat serves only one positive purpose -- protecting the compressor from…"
Jul 24
John Proctor replied to Jon LaMonte's discussion Are Zoned Heating/Cooling Systems a Good or Bad Idea? in the group HVAC
"Tim, You are welcome. I think what the others' responses were focused on is the concept that the AC should cool down the house in a few minutes from a hot soak. A well designed and installed system will make a dent, but it can't pull it…"
Jul 5
John Proctor replied to Jon LaMonte's discussion Are Zoned Heating/Cooling Systems a Good or Bad Idea? in the group HVAC
"Tim, in answer to your questions: 1) Can a 4 ton system with long duct runs cool 2 floors at the same time? a) a 4 ton system that is working properly CAN COOL a well designed and built 2 story house with a floor area of 3100 sq ft. Rick…"
Jul 4
John Proctor replied to Jon LaMonte's discussion Are Zoned Heating/Cooling Systems a Good or Bad Idea? in the group HVAC
" T. Thornton: Dear T. There are multiple items in your comment that bear some response. First is the zoning issue. I strongly suspect that the reason the house is not getting cooled per your criteria is that the AC is actually delivering way…"
Jul 3
John Proctor joined Allison A. Bailes III's group
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HVAC

HVAC design, Manuals J, S, T, & D, Duct leakage, Air flow, ENERGY STAR new home requirements, and more. Since heating & cooling are such a big part of home energy use, understanding HVAC is critical.See More
Jul 3
John Proctor commented on Christopher Morin's blog post Top 5 A/C Code Requirements not Enforced
"Christopher: I have been exposed to the statement that children die every year from huffing refrigerant. I would like to see reports that actually document specific incidents."
Jun 9
John Proctor commented on Brett Little's blog post Despite record breaking cold winter our MI GreenStar Certified home saved 50% Energy!
"If we want to actually do something about the amount of energy the US uses in heating and cooling buildings then we need to get into them and retrofit them with the things we know works. No fancy simulation programs with a lot of assumptions are…"
Jun 3
John Proctor commented on Christopher Morin's blog post DIY Minisplits: Which side are you on?
"Chris  I think it is way too risky to think these can be assembled on site by homeowners given the experience in other countries and with professionals in the US. On the other hand we need to fix the problem. There is no reason that…"
May 22
John Proctor replied to George Kopf's discussion Heat loss from ducts
"Bob Almost everywhere (except places like Riyadh) there are occasions of dry in wet climates as well as high humidity in dry climates. However predominantly in many parts of the US and elsewhere, the majority of the time when the air conditioner is…"
May 11
John Proctor replied to George Kopf's discussion Heat loss from ducts
"Bob You are hitting on a important point -- the length of the time delays are very important. The typical 90 second time delay on some ACs is set to take advantage of the mass of the evaporator coil and get a higher SEER rating. The applicable SEER…"
May 11
John Proctor replied to George Kopf's discussion Heat loss from ducts
"Bob your point about surface area is right on. To elaborate, put in the smallest AC/furnace that will do the job, put the air handler in the center, run the ducts to high inside wall deliveries or center of ceiling, run the duct on the floor of the…"
May 11
John Proctor replied to George Kopf's discussion Heat loss from ducts
"George: As Iain noted the ASHRAE 152 calculation is pretty good and has stood the test of time. There have been field tests that showed how well it did against monitored data. (I can send you some) More recently we have found…"
Apr 14
Diane Chojnowski left a comment for John Proctor
"Hi John, Welcome to Home Energy Pros! Feel free to join the conversation in the Forum and Groups. And share your energy efficiency photos, videos and upcoming events. If you're blogging about home performance, this is the place for you!…"
Jan 27, 2013

Profile Information

Company
Proctor Engineering Group
Professional Certification
P.E.
Website URL
http://proctoreng.com

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At 7:56am on January 27, 2013, Diane Chojnowski said…

Hi John,

Welcome to Home Energy Pros! Feel free to join the conversation in the Forum and Groups. And share your energy efficiency photos, videos and upcoming events. If you're blogging about home performance, this is the place for you!

Don't forget to upload your profile photo. And add your location on our Member Map!


Thanks!
Diane, HEP Moderator

 
 
 

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Hal Skinner replied to Hal Skinner's discussion Rooftop A/C units and exposed ductwork in the group Radiant Control Coatings
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Hal Skinner replied to Hal Skinner's discussion Rooftop A/C units and exposed ductwork in the group Radiant Control Coatings
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Hal Skinner replied to Hal Skinner's discussion Rooftop A/C units and exposed ductwork in the group Radiant Control Coatings
" "
2 hours ago
Hal Skinner replied to Hal Skinner's discussion Rooftop A/C units and exposed ductwork in the group Radiant Control Coatings
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Hal Skinner commented on Hal Skinner's group Radiant Control Coatings
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