David Butler
  • Male
  • Huachuca City, AZ
  • United States
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David Butler's Discussions

Beginners Guide: Managing Subscriptions on Home Energy Pros

Started this discussion. Last reply by Diane Chojnowski on Tuesday. 2 Replies

New members may find subscriptions a bit confusing at first. I know I did. As you'd expect, when you create a new discussion or post a comment, you're automatically subscribed to comment…Continue

Welcome Home Performance Forum Members! (formerly RESNET BPI - Energy Audit and Home Performance)

Started on Saturday 0 Replies

Last month the Home Performance Forum merged with Home Energy Pros, now under the Home Performance Coalition banner. Members of the Home Performance Forum who are not already Home Energy Pro members…Continue

How would you insulate this roof?

Started this discussion. Last reply by Dave Taylor Nov 11. 61 Replies

I have a client who needs your help. In the early 80's, he and his wife built a beautiful off-grid home on a small island near Fort Myers, FL. It currently serves as a convenient getaway, but as they…Continue

 

David Butler's Page

Latest Activity

Diane Chojnowski replied to David Butler's discussion Beginners Guide: Managing Subscriptions on Home Energy Pros
"Great guide David! Thanks! We send two weekly emails to keep members in the loop about new blogs, discussions, and other content. If you're not getting the weekly emails, check your email settings to subscribe. Check your current settings by…"
Tuesday
David Butler replied to Don Fugler's discussion joining ducts in the group HVAC
"I never checked that before. Checking now... Section M1502.4.2 of the International Residential Code prohibits screws or other fasteners that protrude more the 1/8" into a clothes dryer duct. M1502 also requires manufacturer instructions to be…"
Sunday
David Butler posted discussions
Sunday
David Butler replied to Don Fugler's discussion joining ducts in the group HVAC
"Static pressure drop through a straight length of pipe is a function of friction rate, and friction is largely a function of surface smoothness. Like metal ducts, PVC pipes have a relatively smooth surface. Here's a friction loss calculator…"
Sunday
David Butler replied to Don Fugler's discussion joining ducts in the group HVAC
"Why would you think PVC has high resistance?"
Sunday
David Butler replied to Don Fugler's discussion joining ducts in the group HVAC
"Great post, Sean. I agree that screws are wise when joining metal ducts, but its also true that screws can be problematic in dryer exhaust ducts. For this reason, I used thin-walled drain & sewer PVC for my dryer exhaust in my previous home,…"
Saturday
David Butler joined Chris Laumer-Giddens's group
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Energy Efficient Design

Energy efficiency starts at the drafting table...How architects and designers can help buildings reach high-performance standards.See More
Saturday
David Butler joined James White's group
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Building Simulations

Work collaboratively to find easier, more accurate and better ways to model, predict and verify a home's energy consumption.
Saturday
David Butler joined Mark Richardson's group
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Renewable Energy

This group will focus on the issues associated with incorporating renewable energy sources like Solar PV, Solar Thermal, Geothermal, Small Wind, Small Hydro into the Residential Energy Efficiency and Sustainability business model.
Saturday
David Butler joined Kyle Brown's group
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Wrightsoft - Manual J / Manual D

If you use Wrightsoft to calculate loads or design ducts, you likely have questions.  Get answers from veteran program users and peers here!
Saturday
David Butler 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
Saturday
David Butler replied to Brendan Reid's discussion Speed Tips For Duct Airtightness Testing?
"The Home Performance Forum archives include a number of discussions on various methods for sealing registers, although I don't recall drywaller stilts ever…"
Saturday
Dave Taylor replied to David Butler's discussion How would you insulate this roof?
"Bill, I was trying to keep a gap between the metal roof and insulation for air movement and to allow a cooler insulation on contact. I had a ureathane company for 13 years and cannot stress more strongly don't install it inside the envelope.…"
Nov 11
Bill Spikowski replied to David Butler's discussion How would you insulate this roof?
"I’ve put in an inquiry to a reputable local spray foam contractor and am waiting to hear if he has some way to spray this roof without his truck and rig on site. If there’s some way to do that, I think it would be the easiest way to…"
Nov 11
David Butler replied to Brett's discussion Quantitative methods for residential zoning
"Hi Brett, great question! Unfortunately, beyond Manual Zr, I'm only aware of one 'quantitative' guideline: multi-level homes should either be air-zoned or equipment-zoned. Some states require multi-level homes to be zoned. Automatic…"
Nov 9
David Butler replied to Dav Camras's discussion Manual J (SD) for custom, luxury homes
"Hi Dav, since all of my work is custom, much of it high end, these types of scenarios come up from time to time. Extra people and exercising (gym) generates extra cooling loads, not heating loads. Zoning those rooms doesn't help because a) the…"
Nov 7

Profile Information

Company
Optimal Building Systems
Role in Home Performance Marketplace
Building energy modeler, Researcher (Lab. academia. etc.), Other
Professional Certification
Other
Website URL
http://optimalbuilding.com
LinkedIn Profile
https://www.linkedin.com/in/davidbutler52/

Comment Wall (1 comment)

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Join Home Energy Pros Forum

At 9:43am on November 1, 2011, Diane Chojnowski said…

Hi David,

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 add your location on our Member Map!


Thanks!
Diane, HEP Moderator

 
 
 

Latest Activity

Dannie Jackson liked Allison A. Bailes III's group HVAC
12 hours ago
Dannie Jackson added a discussion to the group Energy Efficient Design
12 hours ago
Dannie Jackson liked Barry NewDelman's discussion Help your Clients save, THEN do what you do best
13 hours ago
Dannie Jackson replied to Barry NewDelman's discussion Whats the Consensus of this group Define "Energy Efficiency" in the group Energy Efficient Design
"Design wise I would say that energy efficiency is defined by the Btu / square foot.  This is…"
13 hours ago
Dannie Jackson joined Chris Laumer-Giddens's group
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Energy Efficient Design

Energy efficiency starts at the drafting table...How architects and designers can help buildings…See More
13 hours ago
Dannie Jackson liked Chris Laumer-Giddens's group Energy Efficient Design
13 hours ago
Dannie Jackson posted a blog post
14 hours ago
Dannie Jackson liked Home Performance Coalition's blog post Building a Market for High-Performing Homes
15 hours ago

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