Category Archives: Uncategorized

One House, Many Nations

While we’ve been through an interesting journey building our own place, there are many people in Canada who don’t have the choice of doing so. This is an amazing country in many ways, but its deepest and most unresolved issue remains its relationship to First Nations, and the conditions in which many indigenous people are living, after years of colonial dispossession, extermination, and attempts to destroy culture and connections to the land. The housing situation in indigenous communities is one of the worst current scandals. Many indigenous communities have terrible housing conditions, made worse rather than improved by multiple failed central government attempts to improve things with inappropriate and ill-thought out solutions.

But this is a government issue, right? Nothing I can do about it personally? Well, leaving aside what we might do to organise at that level, there are many things one can do to support indigenous communities, and in the area of sustainable, livable housing, there is a new and excellent initiative which we’ve been following to support the development of a new model for sustainable, expandable indigenous housing. The One House, Many Nations project is now at the stage of building a prototype to take forward to design expos and look for further funding for improvement and eventual implementation.

We encourage everyone to give the project something. They are looking to raise just $50,000 in the next month. If everyone who regularly reads this blog gave $50 that would almost cover it. It’s not a lot. But it could make a huge difference.

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Preliminary winter performance data

We have had temperature and humidity data recorded in the house over the last 4 months as part of a project conducted by Anthony Mach, a passive house designer and Building Science research student at Algonquin College. The preliminary data is now available, courtesy of Anthony. What we have here is essentially the raw temperature and humidity records in two locations: one in the middle of the open-plan downstairs space (1st Floor), and the other upstairs on the landing (2nd Floor). There is a lot of analysis to be done with this data combined with other data on external temperatures, energy use and so on.

A few things to note when looking at these charts:

  1. We were only half-moved in for most of November – we started using the kitchen sometime in the second week.
  2. When we moved in (around the 21st November), the HRV (which actually turned out to have an ERV core – for more on the differences, see here) had still not been properly balanced and we were still only using the system on its lowest setting.
  3. After the HRV had been balanced properly on the 4th December, we started using it on the middle setting, with boosts after baths and during cooking.
  4. We only had the 2kW Thermolec heating element, that works with the HRV, installed on December 14th. Up until that point we had only been using a single 1kW space heater. If it was cloudy in the morning after this point we used both, but if it was sunny we didn’t need the later.
  5. However, that installation coincided with a serious cold spell where external temperatures dropped to -25ºC or lower.
  6. We were away from the 20th to the 30th of December, and had the HRV just ticking over, which means that the house would have had almost no internal heating. You can see the drop, but what’s remarkable is that the place still never got below 13ºC.
  7. Once everything was back to normal and functioning properly, from early January, the temperatures in the house were generally between 17ºC (average night-time low) and 19ºC (average day time high) upstairs, with the extremes being 15.5ºC and 21ºC; and 18ºC (average night-time low) and 20.5ºC (average day time high) upstairs, with extremes of 16.5ºC and 22ºC. The difference is probably explained by a combination of the use of the extra heating downstairs, the passive solar effect from the larger windows, and generally that there is more activity downstairs for more of the time.
  8. The humidity has generally been where you’d want it, between 40 and 50%, gradually drying out as winter goes on. Our HRV having an ERV core helps in stopping the place getting too dry.

International Passive House Days 2016

November 11th-13th this year are the International Passive House Days, organised by the International Passive House Association, on which owners of passive houses open their doors to the public. We would have loved to have been involved, but it’s just not convenient this year, for a whole variety of reasons, not least of which is the fact that we are just in the process of finishing off the place and moving in. We’ll definitely be part of next year’s days. We will probably also have our own Open House at some point this year, probably later in November or early December, so look out for that.

In the meantime, IPHA affiliate Passive House Canada, tell us that will soon have details of projects that are involved this year in Canada. If you aren’t in Canada, you can find your national affiliate organisation here. Please note that this is not a complete list of passive house promoters and research organisations, only those that are affiliated with IPHA. In Canada, for example, there is also the Canadian Passive House Institute (CanPHI) whose directors have been intimately involved in our project and without whom our house would not be the same at all.