Hans Joachim Preiss
  • Male
  • Boulder, CO
  • United States
Share on Facebook Share on Facebook Share

Hans Joachim Preiss's Friends

  • Alicia Livitt
  • Jennifer Lawrence

Hans Joachim Preiss's Groups

 

Hans Joachim Preiss's Page

Latest Activity

Hans Joachim Preiss replied to Bud Poll's discussion Basing air exchange on house volume??
"The type and concentration of pollutants very much depends on the people living in the home. One family may use only zero VOC paints and cleaners, another family doesn't pay attention to what they buy. One family may be only two adults, another…"
Jan 7
Hans Joachim Preiss replied to James Murray's discussion Ductless Heat Pump vs Radiant
"We should mention that Transformations' homes in MA have 12" Double Studded R-45 Low Density Foam Walls and typically not a lot of glazing. An 1,800 sqft home may have two mini-splits on the first floor and one on the second…"
Feb 24, 2014
Hans Joachim Preiss replied to James Murray's discussion Ductless Heat Pump vs Radiant
"Quality of life is very important to me, and I am trying to convince my customers that 'you get what you pay for'. But each their own and I don't think we're adding value to James' question above. Cheers!"
Feb 23, 2014
Hans Joachim Preiss replied to James Murray's discussion Ductless Heat Pump vs Radiant
"James wrote 4800 HDD, which I would not consider a mild climate. Super insulated homes can achieve heat loads so low instead of a geothermal vertical well a slinky can be installed under the foundation at very little cost bringing the price for…"
Feb 23, 2014
Hans Joachim Preiss replied to James Murray's discussion Ductless Heat Pump vs Radiant
"Do you have any need for cooling or dehumidification? If you don't, I don't see that this would be an application for a ductless heatpump.   You're correct that radiant will not create a temperature gradient between floor and…"
Feb 20, 2014
Hans Joachim Preiss commented on Brian Brainerd's blog post Is the Nest Learning Thermostat Disruptive Technology?
"Hardly anybody thought of their thermostat as being dumb and unattractive before NEST showed up. Many people thought thermostats could be improved and that their user interfaces were stuck in the stone age, but not many worked on improving them -…"
Jan 24, 2014
Hans Joachim Preiss commented on Brian Brainerd's blog post Getting Out the Message on Home MPG
"That's absolutely where we need to get to in order for energy efficiency improvements to pay off when selling the home. But currently there are so many ways to cheat. E.g. when I know I'll be selling my house next year, I'll turn the…"
Jan 17, 2014
Hans Joachim Preiss joined Tom White's group
Thumbnail

Weatherization

Share your concerns and successes as a weatherization professional, or information for this community.
Dec 3, 2013
Hans Joachim Preiss joined Sean Lintow Sr's group
Thumbnail

Best Practices (Residential)

Best Building, Retrofitting, or even Auditing Practices - what are they, what should change, what needs to find it's way to the dust bin of history?See More
Dec 3, 2013
Hans Joachim Preiss joined Diane Chojnowski's group
Thumbnail

Hall of Shame

In this group, members share an array of images from the field, showing the kinds of issues encountered by home performance professionals in real homes. Each tells a story of how hidden (but fixable) problems in homes can cause high energy bills.
Dec 3, 2013
Hans Joachim Preiss joined Allison A. Bailes III's group
Thumbnail

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
Dec 3, 2013
Hans Joachim Preiss replied to Johnny Ritzo's discussion Selecting a Water Heater
"Could it be that you have a boiler with tankless coil? Boilers are for hydronic heating, furnaces are for forced air heating. Is this a single family residence? Will you live in it or rent it out? Year round use? How many bathrooms, fixtures, what…"
Jun 8, 2013
Joachim Preiss just added their location.
Nov 12, 2010
Hans Joachim Preiss updated their profile photo
Nov 12, 2010
Hans Joachim Preiss is now a member of Home Energy Pros
Nov 3, 2010

Profile Information

Company
BrightSense LLC
Professional Interests
Net-zero Building Engineer
LinkedIn Profile
http://www.linkedin.com/pub/hans-joachim-preiss/0/782/863/

Comment Wall

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

Join Home Energy Pros

  • No comments yet!
 
 
 

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

Brian Clavette added a discussion to the group Energy Auditing Equipment for Sale, Trade or to Purchase
Thumbnail

FLIR i-7 thermal imaging camera

Hi,I have a very lightly used FLIR 1-7 for sale.   i-7, serial # 60101-4267.  Full hard case and…See More
58 minutes ago
Don Fitchett commented on Home Energy Magazine's blog post At Home with the Internet of Annoying Things
"True, for the smart consumer, the power savings should offset the additional power usage. For the…"
3 hours ago
Michael Dunseith posted an event

BPI Exams - All at Green Jobs Training Center

March 2, 2015 at 10am to March 31, 2015 at 2pm
Green Jobs Training Center is currently providing written and field exams for all of BPI…See More
3 hours ago
Michael Dunseith posted photos
4 hours ago
Dennis Heidner commented on Home Energy Magazine's blog post At Home with the Internet of Annoying Things
"Nice article. I am an electrical engineer, creating sensors for data collection and "possibly…"
4 hours ago
Chris Hunt commented on Home Energy Magazine's blog post At Home with the Internet of Annoying Things
"Hi Alan, You correctly identified a lot of the potential issues coming with the IOT or the…"
4 hours ago
Nicole Miller joined James Sayers's group
Thumbnail

Marketing Energy Efficiency

Sharing ideas, tools and examples of promoting energy efficiency to consumersSee More
7 hours ago
Avi Yashchin posted a video

CleanEdison: BPI Training

Avi Yashchin's former company, CleanEdison, provided education and training for those seeking clean jobs, These services included Exam Prep for Leadership in...
7 hours ago

© 2015   Created by Lawrence Berkeley National Laboratory.

Badges  |  Report an Issue  |  Terms of Service