David Williams
  • Male
  • Belgrade, MT
  • United States
Share on Facebook Share

David Williams's Friends

  • Marg properties
 

David Williams's Page

Latest Activity

David Williams replied to Rob Madden's discussion Energy Auditing Software
"I'm a long time user of HOT2000 from NRCAN. (since 1985) tops all others when modeling a building with passive solar characteristics."
Dec 1, 2016
David Williams replied to Tauran Ivall's discussion Energy Efficient Entry Door options out there?
"I'm a BIG fan of the entry porch.  Two well insulated doors and a place to kick off my muddy boots.  If it is on the South side, add some insulated windows and collect a little winter sun.  An idea taken from homes that were…"
Nov 12, 2015
David Williams replied to Rodney Fox's discussion Utility Meter Accuracy
"Ben,   I have a TED 1000 and a TED 5000 power monitoring station.  Made by The Energy Detective, the have been in service for several years.  These will cost a few hundred dollars, but are simple to install and the 5000 will collect…"
Nov 12, 2015
David Williams commented on Bijou Lulla's blog post HOW DO YOU MONITOR AND TRACK BUILDING ENERGY USE
"Good data will provide good analysis.  Monthly energy bills and weather data from a local airport will only get you in the same town as the ball park.  Actual delta T's and hourly fuel consumption will get you to home plate. The…"
Jul 23, 2015
David Williams commented on Bijou Lulla's blog post HOW DO YOU MONITOR AND TRACK BUILDING ENERGY USE
"Semi automatic-  I collect hourly energy use data using a TED 5000 for electric use and Lascar EL-USB-5 event data logger that is connected to the pulse output of an Elster BK-4G diaphragm meter for LPG usage.  Environmental data is…"
Jul 23, 2015
David Williams commented on Chris Morin's blog post Can you trust your Load Calc Software?
"A four year (hourly) monitoring and verification project has proven the need for passive solar gain calculations in heat dominant climates.  We have found up to 45% discrepancy between yearly energy use measured vs. modeled.  Wile the heat…"
Mar 17, 2014
David Williams replied to Bob Blanchette's discussion Gas meter "constant" charge.
"Bob, is there a mechanism that compares the amount of gas that enters that pipeline circuit and compares it with the amount that is metered and billed.  Accounting for losses in the delivery infrastructure must be included in the rates, but I…"
Dec 18, 2013
David Williams commented on Home Energy Magazine's blog post December 9, 2013...Will It Go Down In Weatherization History As The Day That Changed The Future?
"  Tedkidd might be on to something with program accountability.  I recently spent time in the crawl space, of a building that is owned by the government agency that administers the WAP program in my area.  I informed the director that…"
Dec 18, 2013
David Williams commented on Home Energy Magazine's blog post December 9, 2013...Will It Go Down In Weatherization History As The Day That Changed The Future?
"Meg has my attention and I share her philosophy on VERIFICATION.  The DOE has become a government beast with many heads and tails. Neither looking in the same direction nor wagging at the same accomplishments.  Standardized testing, with…"
Dec 18, 2013
David Williams replied to Kevin's discussion Underground ductwork
"What about Mold??? "
Sep 19, 2013
David Williams replied to Bud Poll's discussion HDD and internal gain.
"I am curious as to which energy modeling tools have been providing accurate results for the experts in this community?  Has anyone reviewed results from Greenbuild Studio (autodesk Revits' cloud based analysis using eplus as its'…"
Jul 22, 2013
David Williams replied to Bud Poll's discussion HDD and internal gain.
"Bud,   I have been collecting hourly energy use and environmental data for two homes for nearly four years.  One is superinsulated with minimal solar and internal gains (seasonal home)  and the other is a passive solar primary…"
Jul 19, 2013
David Williams commented on Bijou Lulla's blog post Solar Energy + Energy Efficiency – time to sing the Duet?
"Do not forget to consider Passive Solar Design for heating and day lighting solutions.  We can offset 30 to 50% of the annual heating needs (depending on location) with common sense design.  A proper design will also temper the summer…"
Apr 18, 2013
David Williams commented on Robert Riversong's photo
Thumbnail

Thompson SFP House Detail

"Extruded (of course).  I also like the way that you achieve the R15 edge requirement.  I have modeled energy loss comparing 2" XPS with 1" XPS in well drained + soils climate zone 6. and have reservations about the added cost of…"
Sep 6, 2012
David Williams commented on Robert Riversong's photo
Thumbnail

Thompson SFP House Detail

"Do you have a moisture barrier below the slabs' EPS?  I have found that a 1" layer of sand, placed over the EPS helped to protect both the insulation and vapor barrier.  This may have also provided some amount of moisture control…"
Sep 6, 2012
David Williams commented on James White's group Building Simulations
"Can you describe your data acquisition method and sensor type/location. I just completed 24 months of hourly monitoring on a passive solar residential building and have a Very large excel file of data that has been evaluated in many different…"
Sep 4, 2012

Profile Information

Company
Homestead Alternatives
Professional Certification
BS AAS Solar Engineering Technology, Mechanical Engineering Technology
Professional Interests
Passive Solar Design, Energy Modeling, Building Efficiency Evaluation, Common Sense Construction and Design.
Website URL
http://homesteadalternatives.com

David Williams's Photos

  • Add Photos
  • View All

Comment Wall (1 comment)

You need to be a member of Home Energy Pros Forum to add comments!

Join Home Energy Pros Forum

At 9:20am on April 19, 2012, 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 upload your profile photo. And add your location on our Member Map!


Thanks!
Diane, HEP Moderator

 
 
 

Forum Discussions

VERY TIGHT HOME WITH OVER SIZED AC

Started by Jerry Needham in BPI. Last reply by Dave Taylor on Thursday. 6 Replies

Mini split air conditioners and ceiling fans

Started by Beverly Lerch in General Forum. Last reply by Daniel Baur-McGuire Aug 13. 4 Replies

DIY Filter Solution for an Evaporative Cooler, anyone?

Started by Leslie Jackson in HVAC. Last reply by Daniel Baur-McGuire Aug 13. 6 Replies

Apply now for the Jon Siemen Memorial Scholarship!

Started by Diane Chojnowski in General Forum. Last reply by Quinn Korzeniecki Aug 9. 1 Reply

Latest Activity

Brett Little posted an event
Thumbnail

Green Rater LEED Credential Online Training at Online

September 5, 2018 at 12pm to September 6, 2018 at 5pm
With over 450,000 LEED® for Homes™ spaces worldwide, LEED is the international rating system to…See More
yesterday
Michael Schettine commented on Michael Schettine's video
Thumbnail

AccuFrame Water Test

"The Like button doesn't work on this site..."
Saturday
Franco Oyuela commented on Mike Muras's blog post "Practical Standards to Measure HVAC System Performance" Rob "Doc" Falke 04/17/2006
"It's important to evaluate and inspect a system regularly to make sure it's at optimal…"
Friday
Seventhwave posted an event

HVAC technology enhancements for energy conservation at The Marq

October 4, 2018 from 8:30am to 4pm
Join us to learn how to get the largest energy savings in your commercial buildings. HVAC as a…See More
Friday
Peter Krych replied to Dav Camras's discussion Adding blown insulation to poorly installed batts?
"I agree, it is wasteful to remove and dump old insulation. I still does its job. Air sealing is…"
Friday
Michael Schettine commented on Michael Schettine's video
Thumbnail

AccuFrame Water Test

"With the conversion rate that- air is 800 time LESS dense than water at sea-level…"
Friday
Michael Schettine posted a video

AccuFrame Water Test

In this short video, water is used to visualize air leakage sites that are present in the majority of framed walls in the US. New regulations require better ...
Friday
Sam Feder liked Dav Camras's discussion Adding blown insulation to poorly installed batts?
Thursday
Chris Stratton liked Don Fugler's discussion Choosing a range hood
Thursday
Dave Taylor replied to Jerry Needham's discussion VERY TIGHT HOME WITH OVER SIZED AC
"Jerry, you should look at Buildingscience.com" High Mass Walls" 105 paper for more…"
Thursday
Jill Lindman's 3 events were featured
Thursday
Jill Lindman posted events
Thursday
Diane Chojnowski posted videos
Thursday
Don Fugler replied to Don Fugler's discussion Choosing a range hood in the group Kitchen Ventilation
"Has anyone installed a range hood in an older home with the ducting down to the basement and out…"
Thursday
Profile IconEileen Kraus-Dobratz, VENI MITTAL and Mark A McCrumb joined Home Energy Pros Forum
Thursday
Brian Robinson replied to Dav Camras's discussion Adding blown insulation to poorly installed batts?
"YES, YES, & YES!!! Bat droppings, mouse droppings, dead mice, nuts, seeds, acorns, lack of…"
Wednesday
Matt Peterson posted a blog post

The Importance of keeping Professionally Trained Gas Line Installation Technicians happy and loving their jobs!

Our company is very much a family to us, we strive to bring in and develop great people into great…See More
Wednesday
Profile Iconyanky fogel, Kathleen Krebs, Nicholas Rubenstein and 3 more joined Home Energy Pros Forum
Wednesday
yanky fogel liked Home Energy Magazine's video
Tuesday
Franco Oyuela commented on Shawn Weeks's blog post How Homeowners Can Keep Electricity Costs Down in Summer Months
"Cutting back on air conditioning is also good for the environment because it reduces carbon…"
Tuesday

Photos

  • Add Photos
  • View All

© 2018   Created by Home Performance Coalition (HPC)   Powered by

Badges  |  Report an Issue  |  Terms of Service