MinnePHit House

MinnePHit House in NAPHN Passive House Flip Book

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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.

2013 International Passive House Days

Please Join Us For The 2013 International Passive House Days

TE Studio is a co-founder and proud supporter of the local Passive House Alliance chapter.  Please join us for an opportunity to learn about and experience Passive House—the World’s most comfortable and energy effcient building standard.
Three of our designs will be open to the public on November 9 and 10, 2013.


Passive House in the Woods, Konkol Residence
Wisconsin’s first certified Passive House; net-energy positive energy performance

Open November 9 from 9 to 11:30AM.

908 Kirkwood Way North
Town of Hudson, WI 54016

Project Overview



MinnePHit HouseMinnePHit House, Brazelton Residence
The first certified Passive House retrofit (EnerPHit) in a cold-climate

Open November 9 from 2 to 4 PM

5605 Bloomington Avenue South
Minneapolis, MN 55417

Project Overview



Passive House Farm

Northfield Passive House Farm

Open November 10 from 10:30 AM to Noon.

2713 Union Lake Trail
Northfield MN 55057

Project Overview

Passive House Retrofit Pilot Project

Today’s mail brought us the official EnerPHit wall plaque for the MinnePHit House project. This building is officially one of the highest-performing retrofit buildings in a cold climate anywhere.

MinnePHit EnerPHit wall plaque and certificate

MinnePHit House is First Cold-Climate Passive House Retrofit

MinnePHit House EnerPHit certificate

The MinnePHit House received the Passivhaus Institute’s EnerPHit certification—making it the first cold-climate retrofit they ever certified. We were fortunate to partner with the PHI on this pilot project, which leverages their brand new retrofit certification program. We are excited about this milestone, and the fact that EnerPHit works in US climate zone 6 for a home that is over 80 years old. The results are truly amazing.


Article in Remodeling Magazine

Remodeling Logo

Recently we were interviewed by Remodeling Magazine about our EnerPHit project in South Minneapolis. This project is a pilot EnerPHit project our office designed. Certification is in progress with the Passivhaus Institute in Darmstadt, Germany.

You can read the entire article here.

Upcoming Lecture Announcements

Passive House Retrofits – The MinnePHit House

9/12/2012: 5 – 7.30 PM

TE Studio Office: 212 2nd St. SE #2222, Minneapolis, MN 55414

RSVP: Please use this link.


2012 National Passive House Conference banner

Lessons Learned From The Passive House In The Woods Project

2012 North American Passive House Conference

9/29/2012: 8 – 10 AM

Marriot City Center, Denver, CO

Earth Week Lecture On 4/25 Featuring MinnePHit

NHCC logo

Thinking about building or remodeling a home, or want to know more about energy efficient technology to reduce your carbon footprint as well as your heating and cooling bills? Tim Eian has focused his architectural skills on incorporating the latest technology in energy efficient new and remodeled homes, which use a tiny fraction of most houses.

This presentation at the North Hennepin Community College highlights the “MinnePHit House” project in South Minneapolis—a deep energy reduction project that turns a 1935 house into a Passive House home.

More information can be found on the North Hennepin County Community College website.

Date: 4/25/2012

Time: 10 – 11 AM

Location: North Hennepin Community College CLA 133

Links: MinnePHit House Website  |  MinnePHit House on Facebook

MinnePHit House update


MinnePHit House front elevation

The MinnePHit House is inching closer to completion as the year draws to a close. We are very excited to be part of the project and wish the owners well on their journey toward move-in day.

Star Tribune Article about the MinnePHit House

Start Tribune Home & Garden

11/12/2011: The Star Tribune published an article today about the MinnePHit project: “A house with no furnace? You bet”

MinnePHit House passes rough-in blower door test

MinnePHit House blower door rough-in test

Today, we ran the first blower door test at the MinnePHit House in Minneapolis. The EnerPHit building standard prescribes maximum air-leakage for a retrofit Passive House of 1,0 ACH50 (air changes per hour at 50 Pascal pressure). Converted to CFM50 (cubic feet per minute at 50 Pascals), we were shooting for a magic number of 300 or less. Immediately, the house outperformed this with a reading of 285 CFM. We spent the rest of the morning with help from the Energy Conservatory, Ryan Stegora (builder) and Paul Brazelton (owner) identifying leaks. Some were patched right away—others marked for later improvements. At the end, we measured a steady 267 CFM50, which corresponds to 0.88 ACH50.

MinnePHit House smoke test

We are excited to see that even a 76 year old home can be made virtually airtight, and we are confident that the builder can improve on the performance of this rough-in result for the final test. The Passive House recommendation for retrofits is at 0.6 ACH50 (about 183 CFM50). This means that the home is currently one “Passive House in the Woods total air leakage” from achieving this reach goal. MinnePHit House, airtight ceiling

To put things into perspective, this home started with a blower door result of 8.5 ACH50 and a corresponding 2,100 CFM50 of air leakage. Since then, it grew by almost 40%. Many existing homes we tested over the years in the TwinCities range from 7 to 15 ACH50. According to the Energy Conservatory, average new construction is in the range of 3 – 7 ACH50, with exceptional builders getting down to 1.5 ACH50 on occasion.

MinnePHit House progress photo

We are very pleased with the performance, which also reflects positively on our detailing and specifications.