Joachim Preiss
  • Male
  • Groton, MA
  • United States
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Latest Activity

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
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
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
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
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
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
Joachim Preiss joined Tom White's group
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Weatherization

Share your concerns and successes as a weatherization professional, or information for this community.
Dec 3, 2013
Joachim Preiss joined Evan Mills's group
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Resale Value

Prove to us that enhanced home energy performance translates into enhanced resale value!See More
Dec 3, 2013
Joachim Preiss joined Sean Lintow Sr's group
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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
Joachim Preiss joined Diane Chojnowski's group
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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
Joachim Preiss 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
Dec 3, 2013
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
Joachim Preiss updated their profile photo
Nov 12, 2010
Joachim Preiss is now a member of Home Energy Pros
Nov 3, 2010

Profile Information

Company
BrightSense
LinkedIn Profile
http://www.linkedin.com/pub/joachim-preiss/0/782/863

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5 Things New Energy Efficiency HVAC Contractors Need to Know

1. Do not sell on Price! Use 'Simple Payback'The price of High-efficient equipment will undoubtedly…See More
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Kim Tanner commented on Diane Chojnowski's group Home Energy Pros on Twitter
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Bud Poll replied to Kaushal Bharath Raju's discussion Affordability & Deep Energy Upgrade/Passive House Retrofit in Berkeley, California.
"Hi Kaushal, First step is to understand where you are in terms of energy costs.  If current…"
17 hours ago
Kaushal Bharath Raju posted a discussion

Affordability & Deep Energy Upgrade/Passive House Retrofit in Berkeley, California.

We have a small 1940s single level house (1005sqf) in Berkeley, California that is in need of a…See More
yesterday
Christopher Morin posted a blog post

5 Things New Energy Efficiency HVAC Contractors Need to Know

1. Do not sell on Price! Use 'Simple Payback'The price of High-efficient equipment will undoubtedly…See More
yesterday
David Eggleton commented on David Eggleton's group Considering Permaculture &/or Transition
"In August 2014, in Minnesota, there's another unprecedented opportunity to meet and mix with a…"
yesterday
Glen Gallo commented on Jim Gunshinan's blog post Energy Upgrade California—Up Close and Personal
"Nate, RE: Duct test On my own home and a rental I have tested more than once over the last many…"
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