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What’s the right temperature for your air conditioning?

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Is your office freezing? Do you need to keep cool to stay healthy? Should you set your thermostat based on recommendations from your utility? If you’re lucky enough to have air conditioning, there are a number of factors to consider when choosing the right temperature.

Comfort and avoiding negative health impacts that come with heat exposure are key. But the hotter it is outside compared to your thermostat setting, the more power air conditioners guzzle. That could strain electricity grids and increase the risk of deadly blackouts during heat waves.

In places with a dirty grid, the energy used to cool buildings can make power plants burn more fossil fuels, which in turn impacts global heating from climate change. Plus, using lots of power can generate big energy bills.

So what to do?

While many homeowners retreat to their air-conditioned dwellings to escape the heat wave, not all renters have that option. CBC’s Travis McEwan has details on reports about heat-related mortality rates among people who rent their living space.

Recommended temperatures all over the map

There’s no shortage of recommendations and guidelines for your thermostat setting — spanning a wide range.

28 C: Recommended by the Japanese Ministry of the Environment to save energy. It was implemented in offices and shops, along with encouragement to wear less formal office attire. This is also recommended in South Korea, with exemptions for some kinds of buildings such as schools and daycares, senior centres and hotels. Toronto Hydro recommends this as the temperature to set when you’re away from home.

27 C: Recommended by the World Health Organization, which also suggests adding a fan to make it feel 4 C cooler. Spain has made it illegal to set thermostats lower than this in public places, although it’s only a recommendation at home. Greece and Italy (excluding hospitals) also use this set point for public buildings.

26 C: The maximum summer thermostat setting recommended by Toronto Hydro, and the Canadian Standard Association’s standard for workplace ergonomics in occupied buildings. Some groups also want to legislate this as the maximum allowable indoor temperature in Toronto.

25.5 C: Recommended by Energy Star, an energy efficiency-labelling partnership between the U.S. Environmental Protection Agency and private companies that make appliances. It’s also recommended by the Hong Kong Government, which says it aims to strike a balance between energy savings and CO2 emissions reductions, as well as thermal comfort.

25 C: Recommended by BC Hydro, which also suggests shutting off the air conditioner when you’re not home for an hour or more.

A white air conditioner set at 23 C
It’s not just the air conditioner itself that makes a difference. It’s also how well your house keeps the coolness in and the heat out, according to experts. (Shutterstock)

24.5 C: The “optimum” summer temperature, according to the Canadian Standards Association’s standard for workplace ergonomics. (Its suggested range is 23 C to 26 C.)

24 C: Recommended by the American Society of Heating, Refrigerating and Air Conditioning Engineers for when you are home during the day. It recommends a higher temperature at night.

22 C: This is considered the typical temperature for air-conditioned spaces in North America. It’s based on what studies have found comfortable, but there are criticisms that this is based on small studies of men in suits, and there’s lots of evidence that women like it warmer.

Hand setting a thermostat with a blue screen to 72 F.
72 F or 22 C is considered the typical temperature for air-conditioned spaces in North America. It’s based on what studies have found comfortable, but there are criticisms that this is based on small studies of men in suits, and women like it warmer. (Eric Risberg/The Associated Press)

26 C is OK for most

“I unfortunately don’t think there’s a magic set point,” said Brendan Haley, director of policy for Efficiency Canada. He noted that it can depend on many factors, including some that can change over time, such as age and health status.

Seniors and those with certain health chronic health conditions such as heart or kidney disease, as well as those with schizophrenia, are more likely to die during heat waves and are considered more vulnerable to heat.

Glen Kenny, professor of human physiology at the University of Ottawa said health agencies have generally considered indoor temperatures of 24 to 28 to be safe for vulnerable people, but that’s based on statistics.

So he recently ran a test on a group of seniors aged 65 to 85. After eight hours at 26 C, they had no increase in core body temperature, heart rate or blood pressure, suggesting that 26 C is a safe room temperature for a day-long exposure.

However, he said, “26 C is still a very warm temperature and potentially uncomfortable for people.”

He added that longer exposures could disrupt vulnerable people’s sleep. “That can worsen their overall health.”

It’s something he hopes to look into next.

 

B.C. renters are getting letters from landlords saying they cannot install air conditioners in their units, and warning they’d be responsible for any damage they might cause. One renter says he’s seen the temperature in his apartment as high as 38 C — well beyond what is considered safe for long periods.

Temperature recommendations can be higher than 26 C in some countries, depending on factors such as the capacity of their power grids and their climates.

Kenny acknowledged that people in some countries are used to hotter temperatures. “There is going to be a level of adaptation, acclimatization to that environment,” he said, although that can take weeks.

Keeping it warm eases power bills and grid impacts

Too many air conditioners running too hard have led to deadly outages in countries such as Pakistan. In Canada, they’ve been blamed for small outages like one in Ottawa’s west end last year. In B.C. last year, some landlords warned tenants against installing air conditioners, saying older buildings don’t have the electrical capacity to handle them.

That may be why many utilities recommend keeping your thermostat set closer to 26 C than 22 C.

Climate scientist Andrew Dessler explains that air conditioners need to work exponentially harder the hotter it is outside compared to the temperature you set inside, consuming exponentially more power and leading to higher bills.

Canada has used rapid analysis for the first time to determine a link between climate change and June’s record-breaking heat wave in Quebec, Ontario and Atlantic Canada.

“Air conditioning is expensive and, because of climate change, it’s getting a lot more expensive,” he wrote this week in his newsletter The Climate Brink.

He gave the example of someone who wants to cool their house to 24 C. If the outside temperature increases from 36 C to 38 C due to climate change, that will require 42 per cent more energy, he calculated.

Already, he said, the power bills for air conditioning are unaffordable for some.

Jim Bolger, president of the Ontario HVAC sales and service company Waterloo Energy Products, acknowledged that for some people, a $10 or $20 difference in their power bill could be significant.

A technician installs an air conditioner
A technician installs an air conditioner in a north London flat on Aug. 11, 2023, the same day a new extreme heat warning took effect in parts of England and Wales. (Katie Nicholson/CBC)

Your equipment and your home make a difference

Bolger says that adjusting your thermostat up or down may not make that much of a difference to your power consumption — it also depends on the age and efficiency of your air conditioner and how well insulated and shaded your house is.

He suspects that what hydro utilities are worried about is the thousands of people who have old, inefficient air conditioners — who will also get much higher bills if they crank their air conditioners too hard.

If your air conditioner relies on a geothermal or geoexchange heat pump, as his does, it will be dumping heat into the ground (instead of the air). The ground is much cooler than the air in the summer, making geothermal systems extremely efficient. In that case, “you’re saving nothing” by increasing your thermostat a few degrees, Bolger said.

Peter Messenger with A1 Air Conditioning and Heating and University of Calgary’s Sara Hastings-Simon explain how heat pumps work.

Likewise, people with newer, efficient air-source heat pumps or air conditioners probably won’t see a huge impact if they keep their place a bit cooler. Those also dehumidify your home more effectively (and many even have a dehumidification mode), which can make a big difference, he said: “You can feel more comfortable at 24 degrees with lower humidity than you can at 20 with high humidity.”

Haley with Efficiency Canada noted that it’s not just the air conditioner itself that makes a difference. It’s also how well your house keeps the coolness in and the heat out — its airtightness, insulation and how well shaded it is. “That is, I would say, huge,” he said.

What about at night? And when you’re away from home?

Some places charge higher electricity rates during peak daytime hours and cheaper rates at night. In these cases, utilities such as Toronto Hydro recommend keeping your house cooler during off-peak hours. Haley said that could let your house store the “coolness” like a thermal battery, possibly for much of the day, if it’s well shaded and insulated.

Many utilities also suggest raising the thermostat when you’re away from home. Bolger recommends against adjusting your thermostat more than a few degrees regularly, as that can force your equipment to work too hard to adjust to the change.

So with all that info, how do you choose the right temperature?

Bolger puts it this way: “There always has to be a balance between operation cost savings, efficiency and creature comfort.”

 

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Looking for the next mystery bestseller? This crime bookstore can solve the case

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WINNIPEG – Some 250 coloured tacks pepper a large-scale world map among bookshelves at Whodunit Mystery Bookstore.

Estonia, Finland, Japan and even Fenwick, Ont., have pins representing places outside Winnipeg where someone has ordered a page-turner from the independent bookstore that specializes in mystery and crime fiction novels.

For 30 years, the store has been offering fans of Agatha Christie’s Hercule Poirot or Arthur Conan Doyle’s Sherlock Holmes a place to get lost in whodunits both old and new.

Jack and Wendy Bumsted bought the shop in the Crescentwood neighbourhood in 2007 from another pair of mystery lovers.

The married couple had been longtime customers of the store. Wendy Bumsted grew up reading Perry Mason novels while her husband was a historian with vast knowledge of the crime fiction genre.

At the time, Jack Bumsted was retiring from teaching at the University of Manitoba when he was looking for his next venture.

“The bookstore came up and we bought it, I think, within a week,” Wendy Bumsted said in an interview.

“It never didn’t seem like a good idea.”

In the years since the Bumsteds took ownership, the family has witnessed the decline in mail-order books, the introduction of online retailers, a relocation to a new space next to the original, a pandemic and the death of beloved co-owner Jack Bumsted in 2020.

But with all the changes that come with owning a small business, customers continue to trust their next mystery fix will come from one of the shelves at Whodunit.

Many still request to be called about books from specific authors, or want to be notified if a new book follows their favourite format. Some arrive at the shop like clockwork each week hoping to get suggestions from Wendy Bumsted or her son on the next big hit.

“She has really excellent instincts on what we should be getting and what we should be promoting,” Micheal Bumsted said of his mother.

Wendy Bumsted suggested the store stock “Thursday Murder Club,” the debut novel from British television host Richard Osman, before it became a bestseller. They ordered more copies than other bookstores in Canada knowing it had the potential to be a hit, said Michael Bumsted.

The store houses more than 18,000 new and used novels. That’s not including the boxes of books that sit in Wendy Bumsted’s tiny office, or the packages that take up space on some of the only available seating there, waiting to be added to the inventory.

Just as the genre has evolved, so has the Bumsteds’ willingness to welcome other subjects on their shelves — despite some pushback from loyal customers and initially the Bumsted patriarch.

For years, Jack Bumsted refused to sell anything outside the crime fiction genre, including his own published books. Instead, he would send potential buyers to another store, but would offer to sign the books if they came back with them.

Wendy Bumsted said that eventually changed in his later years.

Now, about 15 per cent of the store’s stock is of other genres, such as romance or children’s books.

The COVID-19 pandemic forced them to look at expanding their selection, as some customers turned to buying books through the store’s website, which is set up to allow purchasers to get anything from the publishers the Bumsteds have contracts with.

In 2019, the store sold fewer than 100 books online. That number jumped to more than 3,000 in 2020, as retailers had to deal with pandemic lockdowns.

After years of running a successful mail-order business, the store was able to quickly adapt when it had to temporarily shut its doors, said Michael Bumsted.

“We were not a store…that had to figure out how to get books to people when they weren’t here.”

He added being a community bookstore with a niche has helped the family stay in business when other retailers have struggled. Part of that has included building lasting relationships.

“Some people have put it in their wills that their books will come to us,” said Wendy Bumsted.

Some of those collections have included tips on traveling through Asia in the early 2000s or the history of Australian cricket.

Micheal Bumsted said they’ve had to learn to be patient with selling some of these more obscure titles, but eventually the time comes for them to find a new home.

“One of the great things about physical books is that they can be there for you when you are ready for them.”

This report by The Canadian Press was first published on Sept. 15, 2024.



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Labour Minister praises Air Canada, pilots union for avoiding disruptive strike

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MONTREAL – Canada’s labour minister is praising both Air Canada and the union representing about 5,200 of its pilots for averting a work stoppage that would have disrupted travel for hundreds of thousands of passengers.

Steven MacKinnon’s comments came in a statement shared to social media shortly after Canada’s largest air carrier announced it had reached a tentative labour deal with the Air Line Pilots Association.

MacKinnon thanked both sides and federal mediators, saying the airline and its pilots approached negotiations with “seriousness and a resolve to get a deal.”

The tentative agreement averts a strike or lockout that could have begun as early as Wednesday for Air Canada and Air Canada Rouge, with flight cancellations expected before then.

The airline now says flights will continue as normal while union members vote on the tentative four-year contract.

Air Canada had called on the federal government to intervene in the dispute, but Prime Minister Justin Trudeau said Friday that would only happen if it became clear no negotiated agreement was possible.

This report from The Canadian Press was first published Sept. 15, 2024.

Companies in this story: (TSX:AC)

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As plant-based milk becomes more popular, brands look for new ways to compete

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When it comes to plant-based alternatives, Canadians have never had so many options — and nowhere is that choice more abundantly clear than in the milk section of the dairy aisle.

To meet growing demand, companies are investing in new products and technology to keep up with consumer tastes and differentiate themselves from all the other players on the shelf.

“The product mix has just expanded so fast,” said Liza Amlani, co-founder of the Retail Strategy Group.

She said younger generations in particular are driving growth in the plant-based market as they are consuming less dairy and meat.

Commercial sales of dairy milk have been weakening for years, according to research firm Mintel, likely in part because of the rise of plant-based alternatives — even though many Canadians still drink dairy.

The No. 1 reason people opt for plant-based milk is because they see it as healthier than dairy, said Joel Gregoire, Mintel’s associate director for food and drink.

“Plant-based milk, the one thing about it — it’s not new. It’s been around for quite some time. It’s pretty established,” said Gregoire.

Because of that, it serves as an “entry point” for many consumers interested in plant-based alternatives to animal products, he said.

Plant-based milk consumption is expected to continue growing in the coming years, according to Mintel research, with more options available than ever and more consumers opting for a diet that includes both dairy and non-dairy milk.

A 2023 report by Ernst & Young for Protein Industries Canada projected that the plant-based dairy market will reach US$51.3 billion in 2035, at a compound annual growth rate of 9.5 per cent.

Because of this growth opportunity, even well-established dairy or plant-based companies are stepping up their game.

It’s been more than three decades since Saint-Hyacinthe, Que.-based Natura first launched a line of soy beverages. Over the years, the company has rolled out new products to meet rising demand, and earlier this year launched a line of oat beverages that it says are the only ones with a stamp of approval from Celiac Canada.

Competition is tough, said owner and founder Nick Feldman — especially from large American brands, which have the money to ensure their products hit shelves across the country.

Natura has kept growing, though, with a focus on using organic ingredients and localized production from raw materials.

“We’re maybe not appealing to the mass market, but we’re appealing to the natural consumer, to the organic consumer,” Feldman said.

Amlani said brands are increasingly advertising the simplicity of their ingredient lists. She’s also noticing more companies offering different kinds of products, such as coffee creamers.

Companies are also looking to stand out through eye-catching packaging and marketing, added Amlani, and by competing on price.

Besides all the companies competing for shelf space, there are many different kinds of plant-based milk consumers can choose from, such as almond, soy, oat, rice, hazelnut, macadamia, pea, coconut and hemp.

However, one alternative in particular has enjoyed a recent, rapid ascendance in popularity.

“I would say oat is the big up-and-coming product,” said Feldman.

Mintel’s report found the share of Canadians who say they buy oat milk has quadrupled between 2019 and 2023 (though almond is still the most popular).

“There seems to be a very nice marriage of coffee and oat milk,” said Feldman. “The flavour combination is excellent, better than any other non-dairy alternative.”

The beverage’s surge in popularity in cafés is a big part of why it’s ascending so quickly, said Gregoire — its texture and ability to froth makes it a good alternative for lattes and cappuccinos.

It’s also a good example of companies making a strong “use case” for yet another new entrant in a competitive market, he said.

Amid the long-standing brands and new entrants, there’s another — perhaps unexpected — group of players that has been increasingly investing in plant-based milk alternatives: dairy companies.

For example, Danone has owned the Silk and So Delicious brands since an acquisition in 2014, and long-standing U.S. dairy company HP Hood LLC launched Planet Oat in 2018.

Lactalis Canada also recently converted its facility in Sudbury, Ont., to manufacture its new plant-based Enjoy! brand, with beverages made from oats, almonds and hazelnuts.

“As an organization, we obviously follow consumer trends, and have seen the amount of interest in plant-based products, particularly fluid beverages,” said Mark Taylor, president and CEO of Lactalis Canada, whose parent company Lactalis is the largest dairy products company in the world.

The facility was a milk processing plant for six decades, until Lactalis Canada began renovating it in 2022. It now manufactures not only the new brand, but also the company’s existing Sensational Soy brand, and is the company’s first dedicated plant-based facility.

“We’re predominantly a dairy company, and we’ll always predominantly be a dairy company, but we see these products as complementary,” said Taylor.

It makes sense that major dairy companies want to get in on plant-based milk, said Gregoire. The dairy business is large — a “cash cow,” if you will — but not really growing, while plant-based products are seeing a boom.

“If I’m looking for avenues of growth, I don’t want to be left behind,” he said.

Gregoire said there’s a potential for consumers to get confused with so many options, which is why it’s so important for brands to find a way to differentiate themselves, whether it’s with taste, health, or how well the drink froths for a latte.

Competition in a more crowded market is challenging, but Taylor believes it results in better products for consumers.

“It keeps you sharp, and it forces you to be really good at what you’re doing. It drives innovation,” he said.

This report by The Canadian Press was first published Sept. 15, 2024.



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