Southwest Journal discovers a Passive Home

October 28th, 2015 by Tim Eian

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The Southwest Journal writes up our fabulous Nordeast Nest project in its current edition.

Kitchen with island



2015 Internat’l Passive House Days

October 9th, 2015 by Tim Eian


November is near. Since 2010, we have joined forces with our clients to participate in the International Passive House Days. This year is no different and we are excited to share two homes with you. Oh, and don’t worry about the heavy sweater. You WILL be comfortable.

The MinnePHit House

The World’s first EnerPHit (Passive House retrofit) project in a cold climate zone

Time: Saturday, November 14th, from 10am until 2pm, guided tour at 10:15am.

Place: 5605 Bloomington Ave. S., Minneapolis, MN 55417

The Nordeast Nest

Urban infill to its greenest – a low energy home with Passive House components

Time: Sunday, November 15th from 11am until 3pm, guided tour at 11:15am

Place: 2335 McKinley St. NE, Minneapolis, MN 55418

Check out all the participating homes worldwide on this map

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Save the Date: 2015 International Passive House Days

August 30th, 2015 by Tim Eian


Fall is coming, and with it, the 2015 International Passive House Days. These are our sixth Days and we will offer tours of two urban projects this year. Please save the date on November 14 and 15. More details will be coming, soon.


MinnePHit House in NAPHN Passive House Flip Book

August 26th, 2015 by Tim Eian

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The MinnePHit House is being featured in NAPH Network’s latest Passive House Flip Book. Check it out here. It’s free.


24th St. Passive House Published in New Flip-Book

August 26th, 2015 by Tim Eian

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The 24th St. Passive House in LaCrosse, WI is now published in NAPH Network’s new Passive House Flip Book. Take a look.


Building Envelope Performance Is Climate Action

August 4th, 2015 by Tim Eian

Recently I was asked by a reporter to talk about my number one wish list item that I wish was better understood by homeowners in light of climate action and sustainable concepts that support the big picture of carbon reduction. Here is my reply:

In Minnesota, homes consume the largest chunk of energy during the winter months in form of heating energy. Each unit of energy has a carbon output associated with it. Home energy performance is largely driven by the quality and performance of the building envelope—components such as basement floor, exterior walls, roof, exterior doors and windows that separate inside from outside. I see that homeowners can get confused about how to improve home energy performance, and often gravitate towards mechanical systems, or renewable energy systems instead of improving the building envelope.



Highly insulated wall with German-made triple pane window at the MinnePHit House in Minneapolis, MN—the first certified Passive House retrofit project (EnerPHit) in a cold climate zone (TE Studio, 2011).

A simple comparison with everyday life: While the building envelope compares to the heavy down jacket Minnesotans wear in the winter, the mechanical system compares to the little heating pouch we stick in our pockets to warm our hands. Most Minnesotans would agree that when venturing outside in the winter, the heavy jacket is more important than the little heating pouch, and understand that they would need a mighty large pouch to make a summer jacket keep them warm instead.

Similarly, mechanical equipment plays a role in home performance, comfort and efficiency but it cannot set the baseline for performance and improve the bottom line. Fact is that most humans prefer 70 F at 40 – 50 % relative humidity, which is a condition that we rarely encounter outside in Minnesota—particularly in the winter. It is the building envelope’s job to protect us from the elements, and enable the building to maintain those preferable conditions inside. Whatever the building envelope cannot do, a mechanical system has to compensate for. In return, this means that the better the building envelope, the less the mechanical system has to provide, the less energy is being consumed and has to be generated, and the lower the carbon footprint. At the same time, comfort is up as the human body enjoys the steady environment.

A greater understanding of these facts enables homeowners to make sound decisions when it is time to enhance building performance—either for comfort, financial, or environmental reasons, or just because the building envelope is up for routine maintenance, which—by the way—is the best time to make upgrades as upgrade costs become incremental to the maintenance work.

The same is true for new construction, as our building energy code sets a comparatively low bar for building performance and comfort (you would not wear that summer jacket in the winter). The nice thing about building envelope upgrades is that they return on their investment on many levels all at the same time: Reduced carbon footprint, reduced energy bills, and increased comfort. In short, they are a smart use of our finite resources.

For those wondering what these upgrades entail, it is pretty simple:
    • More insulation than code (typically 2 – 3 times); a checklist approach could be adopted, or an energy model used to determine the exact amount
    • Airtight construction of less than 1 air change per hour at 50 Pascals pressure (measured with a blower door in the field); airtightness is an insurance policy against early building degradation among other things
    • High-performance windows and doors (overall installed U-factor of less than 0.14 BTU/ h sf F with a solar heat gain coefficient of around 50% and an exterior shading strategy)
    • Hygrothermally sound assemblies (meaning moisture transfer is understood and the design for the building envelope is resilient and durable over time)
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Secondary wall framing ready for insulation during construction.

A qualified professional such as TE Studio can assist with goal-setting, design and planning, which is key to a successful implementation of building envelope enhancements.

It is understood that plug loads and domestic hot water also play a big role, particularly in regards to the carbon footprint of a home. However, those loads are often much more user-driven and therefore more challenging to address by design. As an architectural-engineer, I therefore focus my attention on the parts of the building our profession can control and encourage energy-aware living among those I work for, or talk to.

2015 Art-A-Whirl Open House

May 8th, 2015 by Tim Eian

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Join us for the 2015 Art-A-Whirl Open House. Experience a Passive House retrofit and beautiful artwork from gifted Minnesota artists at the same time!

We are opening our doors for all three days of this year’s Art-A-Whirl, THE art crawl in Minneapolis. View great art in a Passive House environment in the heart of the NE arts district:

Friday, May 15, from 5 pm to 10 pm
Saturday, May 16, from Noon to 8 pm
Sunday, May 17, from Noon to 5 pm

TE Studio & Intep
901 23rd Avenue Northeast
Minneapolis, MN 55418

Find us on the official Art-A-Whirl 2015 map

Read our latest newsletter for details.


Happy Earth Day from TE Studio

April 22nd, 2015 by Tim Eian

2015 Earth Day Card


Tour the Nordeast Nest

February 23rd, 2015 by Tim Eian


Tour of the Nordeast Nest Home

4/18/2015: 1:00 – 2:00 PM
Purchase tickets here.


Passive House Lecture at the U of M

February 8th, 2015 by Tim Eian

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Introduction to the Passive House Building Energy Standard

I will be lecturing at the U of M again this year—giving students an introduction into the World’s leading energy standard for buildings.

3/5/2013: 1:00 – 2:15 PM
Architecture building.