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'Passive house' movement could slash energy costs

An Ottawa duplex crafted by Vert Design received Canada's first passive house designation for its immaculate energy efficiency. An Ottawa duplex crafted by Vert Design received Canada's first passive house designation for its immaculate energy efficiency. An Ottawa duplex crafted by Vert Design received Canada's first passive house designation for its immaculate energy efficiency.
An Ottawa duplex crafted by Vert Design received Canada's first passive house designation for its immaculate energy efficiency.

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I agree whole heartedly with Albertan. As a matter of fact I posted the exact same comments, that the more efficient we become at saving energy, the more costly energy is becoming because of the greed of companies controlling our electricity, gas and water. Efficiency will pay off for those who can afford to build efficient homes, buy efficient cars but those who cannot will suffer. The government, all ran by very wealthy Canadians do little to help out because it's their stocks that drop when we become more efficient.

Vickie

'Passive house' movement could slash energy costs

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'Passive house' movement could slash energy costs

Date: Sunday Feb. 27, 2011 6:22 PM ET

On a residential road near downtown Ottawa stands what could be the solution to Canada's ballooning energy concern: a stylish and sophisticated duplex home that runs on only a fraction of the power that your house does.

The Ottawa duplex, named the Rideau Residences, recently earned Canada's first passive house designation and establishing itself as the benchmark for a growing green-home movement in Canada.

The house, built by Vert Design in Ottawa's New Edinburgh neighbourhood, uses 90 per cent less energy than the typical Canadian home. Principal designer Chris Straka estimates it will cost about $400 to heat the 1,500-square-foot home over the course of a year.

The science sounds pretty straightforward, once you strip away the green-tech jargon. Thickly insulated walls, specialty windows and a sound, air-tight design leave the semi-detached home nearly untouched by Canada's bitter winters and sudden summer hot streaks.

"One of the few things that make it different is how it performs from an energy efficiency standpoint," Straka told CTV.ca. "We are going to start seeing this more in the next few years in custom homes. There is no question the value shows itself really quickly."

While the passive house movement is in its infancy in Canada, there are about 30,000 such homes in Europe and it is catching on in the U.S. as well.

Passive homes can maintain a comfortable interior climate without active heating and cooling systems. With careful planning, and an ambitious design, Straka says green home builders can create a passive home without adding much to the overall cost of construction.

Thicker insulation coats the walls to stop heat from escaping while triple-pane windows keep the winter cold out while the sun's natural warmth leaks into the home.

Thermally heated air is used in the ventilation system, while solar panes on the roof can help provide some, if not all, of the necessary power.

The key to keeping passive houses cost effective is to increase the building's performance to the point that conventional heating systems can be eliminated entirely. The savings will make up for the higher building costs, Straka said.

"It is a truly Canadian accomplishment. We can do it here. We have the knowledge, we have the material. You can do it, too," he said. "The real trick for a green building designer is putting the pieces together appropriately."

To earn a designation from the Passive House Institute, a home must be five to 10 times more airtight than an average new building, effectively cutting out any air flow through minute wall cracks and window seepages. Straka describes the result as a perfect, unrippling environment.

"It feels stable and consistent. When you sit by a window you don't feel any colder than if you were sitting 10 or 15 feet away from a window. If you put your hand on an outside wall it is going to feel the same as an inside wall."

A passive house must also use about 10 per cent of the energy for heating and cooling that a home built to the Ontario Building Code would use. Of course, using a fraction of the energy also leaves passive home owners paying far less in energy costs.

"This really resonates with people," Straka said. "It is pretty simple to see where and how there is value in building a passive home."

Straka took on the challenge of building the Ottawa duplex, called the Rideau Residences, as a sort of side project; a way to research and develop green technologies that Vert Design could use again.

He didn't set out to reach the rare passive home designation, he said. He had been told it would be impossible to hit the benchmark in a Canadian climate, using only material available in Canada. Halfway through construction, an inspector realized he was on target.

"When we did the best we could using what we have got here, we were pretty surprised to find out it did certify," Straka said. "Not only is it the first passive house that is being used as a residence, it was also built using Canadian knowledge and Canadian materials and systems.

"At the time there were no examples of passive homes in Canada."

The only other designated passive building in Canada was constructed in Whistler, B.C., ahead of the 2010 Winter Games. An Austrian collective build the showcase home using specially designed parts and material imported from Europe. The building remains, but it is not used as a living quarters.

Straka says if the passive house movement is going to continue, Canada still needs to turn to Europe for guidance.

"In Canada, we are leaders in terms of research and development around efficient buildings," Straka said. "We know how to build better buildings. But from a legislative perspective, Canada is a laggard. We are way behind the times."

Straka said Europe is close to setting energy efficiency standards similar to that found in passive homes. In Canada, it could take decades for legislation to catch up.

"Where is the drive going to come from? Custom home builders and designers are already doing it. The ability is there, the knowledge is there. I guess the question is how much energy do we want to save in the next 10 or 20 years?"

Comments are now closed for this story

Doug G
said

Please see first real Passive house in Canada at passivehouse.ca/background/passivehousehistory Canada use to be the world leader in this technology but our governments collectively decided to "forget" all the advances we made."...the first real Passive House ever built was the Saskachewan Conservation House designed and constructed in Regina, Saskachewan in 1977. This project was a joint undertaking by the National Research Council and the Saskachewan Research Council..."


dragoneyes001
said

OK enough with the radon BS.if you have a house less than 20 years old you will have a Vapor barrier added below the basement slab.(in areas where Radon gas is most prevalent if you don't then its very likely you have polymer additives to the concrete making the slab itself a vapor barrier against gas seepage and failing that many homes actually have a vapor barrier added between crawl spaces and the home itself.stop thinking that home construction has stayed in the dark ages when it comes to basic safe living environment.


Major Banford
said

Yes Jack, the Liberals allowed electricity rates to increase and it has nothing to do with massive costs in generating and distributing electricity... Ontario should go back to the days of the Tories, everything was unicorns and rainbows then...


Ryan Sales
said

Looks at the all of the first comments on this post. They are all virtually the same length, written in the same tone with the same level of english. They are likely written by the same person who is looking to discredit the article.Whether you believe in being more energy efficient or not, applaud innovation. It's what makes the world a better place.


David
said

To all of you that blame high energy cost to the Ontario Liberal Government, the fact is that the real policy that is affecting all of us with high energy prices comes from the "Conservative Federal Government." I cannot believe people do not document themselves before making a comment. What this does is creating more uninformed opinion on those who spread the word. Yes, new technologies are more expensive. It is also true that hydro prices are moving up, will poor people would end up been the most affected? indisputable, but again: Who is behind all of this? The private sector, in which the Tories had given private companies advantages to"privatize" it all, so consumers pay more. When it comes the time to put the blame, Tories are quite good at pointing fingers and deflect the fingers that point at them. Recommendation: Learn what MP is doing what, and then, investigate who this benefits, shock for many is that Conservatives' friends are behind this all.


VH in Winterpeg
said

Where did they come up with the term "passive house?" Doesn't make sense to me.I have a major concern with the house being airtight and with the building materials, and agree with other posters about the health hazards of living in such a building containing toxins. I think we can do better than this!I also believe that the price of energy will increase because of this focus on "energy efficiency." It leaves most of us - who live in older homes or homes with older technologies - to pay higher rates for hydro, electricity, etc.


YRConservitivesSAgainstConservation
said

In regard to ventilation, passive homes are very well ventilated, but still need very little additional heat. All the air coming in and out of the house passes through a Counter Current Heat Exchanger. Using CCHEs to warm the incoming air by taking the heat from the out going air is very efficient. CCHE efficiency is close to 100%. By keeping the building envelope as airtight as possible, you can then use as much forced air ventilation at very low operating cost, as long as the CCHE is correctly sized. The minor loss of heat from the outgoing air is easily made up for in European climates by heat emitted from lighting, appliances, occupants, etc. In the colder Canadian climate the incoming air may need to be pretreated with geothermal energy to reduce the physical size of the CCHE. The drawback of the passive home is the increase in building cost is not negligible. At current energy costs it takes many years to payoff. Some of this cost increase would come down with mass production of the required technology. This combined with potential increases in energy pricing could make a passive house an excellent investment.


Andrew
said

"I will be a pessimist here. If we were to save 90% on energy, you can guarantee that the energy companies will increase their prices to us. so that they can still make the same amount of money on only 10% of their product."I may be missing the real point but are you suggesting we just continue squandering energy and keep our heads in the sand? Only in a country like Canada where opportunity is basically placed in each of our laps do people complain so much. If you don't make enough money then do something about it, plain and simple. Seriously, I'm so tired of people complaining that they don't have this or that...go to any country in Africa or South America and look someone in the face and complain that you don't have a golden straw for your Starbucks moccha and see how they react. geez. This house design is a step forward, not a step back as some people are apparently whining about.


JB in Ontario
said

As a Green Party member, this type of housing sounds like a great idea and a step in the right direction for the planet. Europe is far ahead of us in this respect. We are slowly shifting our ideas to green energy and sustainable living. $400.00 per year is very efficient to heat a 1500 square foot home per year! It is very idealistic, but anything is possible. Maybe some homeless people might be able to afford this type of housing and support the Green movement!


Damon
said

The vast majority of people that would build these homes are mostly concerned about their carbon footprint. The energy cost savings long term is purely a bonus for them. Not everyone is that money centric, things like environment can trump money for a lot of people.Also, there are many modern technologies that can help with mostly sealed buildings. Air echangers, high end air purifiers. I am also confident that you could have a few windows that OPEN and do that when the temperature outside is just right.Easy solutions!


Doug
said

Not much more to say thanks to the intelligent and informed bloggers before me.We will have a residential version of "sick building syndrome" and left lib politicians will just find new ways to stick us with more taxes and higher payments to a new energy contractor industry.


Lori
said

Island Girl, the exact same thing happened in Winnipeg, Manitoba. You conserve like you're supposed to and you have to pay because you conserved "too much". What a joke.


Van down by River
said

This will be only slight help for our twin problems of peak oil and climate change since the yearly turnover in housing is only 1 or 2%, and not every new home will be a passive house. Those who talk about energy price increases seem to think most houses could be converted overnight. Energy prices are going to increase due to depletion not conservation.


Misplaced Newfie
said

As long as the companies supplying the power & gas are shareholder companies, the prices will rise to counteract the lack of usage. The CEO has to answer to the investors & make them $$$ or he may not get his year end million dollar bonus. Or worse yet be out of a job and have to sell the yacht & the house in Florida on the golf course.Same with fuel. If everyone drove Smart cars the price at the pump would rise to maintain the income for the investors.Solution: Government run, not for profit companies, (or profit and lower income tax) for the necessities of Canadian living.And before anyone jumps down my throat about gas for my vehicle not being a necessity, well they have never commuted to work because the housing nearby wasn't affordable. It is a large northern country and we have to live here.


Boby the bobber
said

Agree with Vicky, Island Girl and Albertan wholeheartely. Here in Banff they touted water conservation, water conservation. So we saved water and now we pay 1/3 more for sewer rates as we are using less water and the sewage plant is losing money. As well as some else mentioned, the cost of administration does not reflec usage. Albertans still get charged a straight accross the board fee for transmission, billing ect that is usually the same or more for power used. De regulation was great for all but the consumer. Enough said.


Michael from Toronto
said

There may be serious technical and safety concerns about a house that is 10X more air-tight than the average NEW building. Anyone can build an air-tight insulated box, how healthy is the air in such a "box"? Our elders always extolled the virtue of circulating the air and exchanging stale house air with fresh air. How can you achieve that if you seal up your home?Another concern is Radon gas which is a natural off-gas from soil. Canada does not diligently inform home owners about the dangers of Radon gas; nor does it monitor and apply it's somewhat outdated Radon standards. If the foundation and basement is not air-tight, Radon gas will be drawn in through the cement and basement cracks even more so than in "more leaky" houses. Radon enters homes when there is a negative pressure differential, when house pressure is lower than the outside. Air comes in through the path of least resistance - if the upstairs is airtight, the air will then come via basement leaks bringing Radon from air pockets in the earth. Long-term, high Radon gas exposure in the home is a major contributor to incidences of lung cancer.A far better design strategy is to generate energy from passive sources and to maintain healthy air-flow in a house designed for habitation. Many homes in Germany use geothermal heating.


Jack R
said

Has no one noticed but OPG and the Ontario Liberal have suddenly allowed the price of electricity to sky rocket...just in time for the introduction of an all electric car. It's simple. Do the math. How much gas tax is the provincial and federal governments going to lose over the next couple of years if even 1 in 10 people start using an all electric. No gas tax, no engine service, no oil changes. You're talking billions of dollars lost in tax revenue. So how are they making up for this loss. Why by jacking up your electricity costs to make up for it. Problem solved. Noticed how it dovetails nicely with the slapped on HST to home electricity costs. There should be an independent study done to see what the EXACT cost of power generation is. It shouldn't be allowed to rise by 200% if all it's doing is fattening the bottom line of the government and investors.


Carl
said

I have to wonder how much extra energy has to go into the construction of such a home, including the production and transportation of extra materials such as glass and insulation. I also wonder about the health impact of living in such a tightly-sealed environment, due to increased concentrations of radon and toxins from building materials. Also, it is widely understood that most new homes are already too airtight for our climate when it comes to controlling humidity and hence mould.


Adam
said

Previous comments which suggest that energy companies will react to increased number of passive houses by increasing energy prices are not in tune with economic history in the energy. The reduction in natural gas demand spurred by more new passive houses, or more energy-efficient renovations, will only lead to a total reduction in energy prices due to a total reduction in energy demand. The only thing increasing prices will do is encourage you to use less - or even switch of N.G. altogether - something they do not want. In fact, reducing prices is the best thing that energy companies can do to fight any 'green' movement, just as they did in the 1980s during the oil glut.

Vickie
said

I agree whole heartedly with Albertan. As a matter of fact I posted the exact same comments, that the more efficient we become at saving energy, the more costly energy is becoming because of the greed of companies controlling our electricity, gas and water. Efficiency will pay off for those who can afford to build efficient homes, buy efficient cars but those who cannot will suffer. The government, all ran by very wealthy Canadians do little to help out because it's their stocks that drop when we become more efficient.


glen
said

All this is well and good and I applaud their efforts. However, for people who live on the latitude as I do the financial cost rises exponentially.Here in east central Alberta we are having our 89th sub-20 high since Nov 1. That's 89/120 days that have been -20 or lower. It may be possible to effectively heat your home using solar panels (the skies are the most incredible blue during these intense high pressure systems) and to keep it warm with upgraded insulation strategies but we are not ready for the day when we put 3 ft thick walls on our schools, hospitals, offices buildings. Fossil fuels still remain the only way to quickly and effectively provide liveable conditions in this environment - at least at a cost that allow ordinary people to live and work here.


island girl
said

It uses 10% of the energy costs, so calculate the 90% you save and multiply it by the 3o years you're living there. Then compare the purchase price of one of these homes to that of a conventional one. It must be cost saving all 'round be attract clients. They said it costs not much more to build, so let's see if that is what is passed down to consumers. PS... now the pressure will be on as governments impose these standards on everyone and allow energy costs to skyrocket as an 'encouragement' to spend a fortune retrofitting...


Vickie
said

I agree whole heartedly with Albertan. As a matter of fact I posted the exact same comments, that the more efficient we become at saving energy, the more costly energy is becoming because of the greed of companies controlling our electricity, gas and water. Efficiency will pay off for those who can afford to build efficient homes, buy efficient cars but those who cannot will suffer. The government, all ran by very wealthy Canadians do little to help out because it's their stocks that drop when we become more efficient.


island girl
said

To Albertan: What you said is exactly what happened in Victoria, BC. The residents were so good at conserving water that the city's revenues went down so much that they raised the rates so they made the same revenues. So people ended up paying out the same for the bills, but consumed way less. THAT is our future, whether it is gas, water, hydro....pay more and more for less and less, but we're duped into thinking we're 'heroes' for 'conserving'.


Elizabeth, Ontario
said

Sounds like a wonderful idea to save money on heating costs. What is the cost to health in the long term? Building materials contain many hazardous chemicals and, if these homes do not have sufficient air exchange, one might assume there would be some serious health risks to living and breathing in an air-tight home. As long as Dalton McGuinty is Premier of Ontario there will be serious increases in energy costs, taxes, etc to absorb any savings from building a more energy efficient home.


George
said

And how do they let the Radon escape? Last time they air sealed homes and commercial buildings people started to get sick from Radon poisoning due to a build up in the home because it couldn't escape. I'm interested in learning how they solved that problem...


Alicia
said

The last time they did the airtight house in Canada, there was a black mold outbreak. Did they bother to remember a concept called air circulationa dn replacement?


Will
said

There is nothing new about this, it is "old tech", it's just been "rediscovered" and repackaged for the media.


Anne
said

Instead of forcing hardworking, lowpaid Ontario taxpayers to pay for Ontario Hydro's constant cost overruns, screw ups and generally accepted incompetence - why can't we have a chance to invest in new technology such as this.


Kathleen
said

So how can it get the title of Canada's first passive house? My dad and I built a passive house back in 1980 and we have the pics to prove it; big triple pane windows across the south, air exchanger,... We were supposed to have solar panels across the top (special designed for them) as well however the depressed housing market at the time prevented us from being able to afford the solar.


Lethbridge in the News
said

Lethbridge has a similar house built over 30 years ago using Canadian materials and Canadian know how (although 30 year old technology now). Of course we can build like this in Canada even with our weather. Hopefully the move to passive homes will be a planned transition rather than one forced upon us by sharply rising energy costs.


Ottawa South
said

""It doesn't matter how effient this house is. Dalton will raise hydro rates to cover their loss.""......Good point! Well we will have our opportunity to deal with "Dalton and the Dolts" later this year.


billst
said

this is all well and fine but for the hydro that is used they will still pay all the extras like delivery etc. etc. i heard one case where a person closed their house for the winter using $7.00 worth of hydro per month but the total coming to $60.00. also, to equip a home like this increases the value and will end up paying the extra in taxes etc.


Ron J.
said

Like living in a plastic bag. No fresh air. Think of all of the toxins you'll breathe in from your carpets, paint, furniture, plastics, curtains, etc. Yum.


Albertan
said

I will be a pessimist here. If we were to save 90% on energy, you can guarantee that the energy companies will increase their prices to us. so that they can still make the same amount of money on only 10% of their product. This is great for them and the new house owners with the new energy effecient home, but for the rest of the people with regular homes which would be almost everyone, it will be a financial disaster unless the government would put a freeze on the energy companies increases


Bob Jones
said

The cheapest money you make is the money you don't spend. Waste No, Want Not.Wonder why this Green thing hasn't taken off among the right-of-centre types who claim to live and breath such mantras? Machismo?


Ifish1
said

It doesn't matter how effient this house is. Dalton will raise hydro rates to cover their loss.


A Cold Canadian
said

"The ability is there, the knowledge is there..." the big question then is: Are Canadians willing to pursue this? Is it financially appealing for a contractor to incorporate these techniques? Are there gov't incentives for home owners? With the continual rise and unreliable sustainability of fossil fuels we MUST pursue these initiatives. But it all boils down to money.


Michael
said

We have a long way to go to teach current home builders how to erect a quality energy efficient home. Right now they throw them up with little concern for tolerances fit or finish. Its all about making a quick buck right now.


Old Ted
said

The real question is, what is the cost above and beyond that of building a regular home that we might buy in a subdivision today? Like so many things, it sounds great until you get into the details. Is it financially viable?


biffidum
said

Since it is so air tight do you have to stick your head out for a breath of fresh air periodically? A living wall would be a nice addition to this, but impractical for the average person to maintain.Ultimately building codes will have to be amended to include some of the emerging alternative construction methods. Straw bale houses for example. This proven design is both energy efficient and materials renewable, yet an engineer is required to certify at great expense each construction due to a lack of provision in the ontario building code.


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An Ottawa duplex crafted by Vert Design received Canada's first passive house designation.

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An Ottawa duplex crafted by Vert Design received Canada's first passive house designation.

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