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Climate change has the odd effect of making many of us inordinately excited about appliances we never used to care about. Suddenly, all the background machines, which have up to now been unconsciously powering our lives, have taken on outsized importance. Some of them have the potential to provide the essential services we depend on while, at the same time, not destroying our planet like the fossil fuel powered machines of the 19th and 20th centuries.

Ductless heat pumps are a prime example. In the past, many of us used gas furnaces and boilers to heat our homes and burned fuels that emitted copious amounts of CO2 in the process. Now, with the magical heat pump, we have access to efficient electric technologies for heating and cooling that can be powered entirely by renewable energy, and thus be carbon neutral.

Photo courtesy of The Heat Pump Store

Brief History and Growth of Ductless Heat Pumps

Ductless heat pumps (DHPs) were developed in Japan after World War 2. They were invented and perfected on an island that doesn’t have easy access to fossil fuels, and so they are the ideal heating/cooling system for our modern world given they don’t rely on combustion and are also incredibly efficient.

They condition 90% of Japanese homes, and worldwide their usage is growing like crazy, with an expected doubling of heat pump sales in the next five years. In the UK, sales are projected to increase 20 fold, and in the US, some areas are seeing sales growth north of 40% every year.

My family has used ductless heat pumps for our heating and cooling since 2012 when we bought our house. The gas furnace that came with our house was old, and we made the decision to replace it with new ductless heat pumps. (A major perk is that mounting the units on the wall saved valuable floor space in the garage, formerly dedicated to the gas furnace, which we converted into an apartment). We had seen them used in Europe and figured, even 9 years ago when the electrification movement was in its infancy, that heating with efficient electricity would allow us to reduce our carbon emissions with the solar panels we planned to install on our roof. 

Photo from Joe Wachunas

What is Ductless?

But what is a Ductless Heat Pump (a.k.a. mini-split)? Basically, it is a heating/cooling system that is different from a traditional furnace in several ways:

1. DHPs don’t have air ducts. Rather than forcing hot air through potentially leaky ducts, ductless systems place an indoor device on a wall and an outdoor unit (similar to a typical AC unit) which provides heating and cooling. This means no air escapes through leaky ducts, creating more efficient conditioning. 

Indoor unit. Photo Courtesy of The Heat Pump Store.

2. DHPs don’t burn things. Ductless heat pumps use electricity to provide heating and cooling. Electricity is rapidly moving towards being fully renewable and thus will soon produce zero emissions (the Biden administration set a goal of 2035 for example).

3. DHPs are like refrigerators in reverse. Instead of burning fuel, ductless heat pumps create heating and cooling through refrigeration. This means they capture heat from outside (even when it’s cold) and move it into your house, and vice versa for cooling. It’s pretty magical. The refrigerants used by DHPs can be potent greenhouse gases themselves, but luckily the world is moving quickly to using better, more environmentally friendly refrigerants (check out this website for a new type of refrigerant called R32).

Refrigerant lines from ductless heat pumps. Photo courtesy of The Heat Pump Store.

4. DHPs are incredibly efficient. This is because a) no air leaks through ducts b) they heat the room they are in (rather than the whole house), c) moving heat is vastly more efficient than creating it, and d) they use inverter systems (see below). As a result, they typically use three times less energy than old electric resistance heaters and six times less than gas. 

Demystifying a couple DHP terms 

Speaking of efficiency, let’s demystify a couple of terms associated with ductless heat pumps.

SEER — SEER is a number that measures how well a technology provides cooling. The higher the number, the more efficient the unit. Most new air conditioners have a SEER between 13 and 21, but ductless can often see a SEER over 30, which gives you an idea of how efficient they are. If you’re in a warm climate, SEER is especially important.

HSPF — HSPF stands for Heating Season Performance Factor and complements the SEER rating in that it measures how efficiently a heat pump heats a space. The minimum required HSPF rating in the US is 7.7. An 8.5 score is considered good, and over 10 is excellent. If you’re in a cooler climate, where the predominant energy use is for heating, HSPF is most important.

Example of SEER and HSPF ratings

I interviewed Tim Sharp, from the Heat Pump Store here in Oregon, which has installed thousands of ductless heat pumps over the last decade. He said that you’ll want your DHP to be most efficient in heating if you’re in a cold climate, and cooling if you’re in a warm climate. People in the northern US should probably focus on HSPF, while in the southern US, people should focus on SEER. Tim also said that investing in a DHP with higher scores will be more expensive up front, but the additional cost usually pays for itself over time through energy savings.

Ductless Heat Pumps in Cold weather

I also learned from Tim that DHPs were originally developed to provide only cooling (like a refrigerator), yet they have “constantly gotten better for heating purposes in almost every environment.” If you’re in a cold climate, you probably want to think about the “extended capacity” models, which are able to provide more heating. According to Tim, they don’t cost significantly more and offer more BTUs per hour output. Read more on how to use heat pumps in cold climates here

Ductless vs. Ducted

If you have existing ductwork in a space, you may consider a different approach when transitioning to heat pumps.  Not all heat pumps are ductless. You can get central heat pumps that work with a typical central AC system, and provide heating that blows that hot air through ducts. These central heat pumps are not much more expensive than central air conditioning, and many people think that swapping out every central AC system for a ducted heat pump is an important strategy to quickly get us off natural gas and reduce carbon emissions.

Ductless, on the other hand, is a no-brainer when you’re adding heating or cooling to a room without any ductwork. And DHPs also offer greater efficiency as well as economic and environmental advantages over a central ducted heating system. In addition to the efficiencies mentioned above, ductless heat pumps use inverter technology, which means they run at variable speeds. Tim from the Heat Pump Store compares this to starting your car at a red light. Inverters slowly rev the engine when starting and stopping, while typical central AC systems gun it and brake hard, meaning they are much less efficient. All DHPs use inverter technology, while virtually all conventional (ducted) heat pumps don’t, meaning DHPs are much more efficient. 

My family chose ductless heat pumps in our house, rather than a whole house heat pump, even though we had existing ductwork from our old gas furnace because of the increased efficiency. 

Photo courtesy of The Heat Pump Store

Humidity and air quality

Though ductless heat pumps help to dehumidify a room, it is not their primary purpose. In places with humidity problems, a separate dehumidifier may still be necessary. Similarly, DHPs have built in air filters, but can’t generally filter air to the extent that ducted systems do with high rated MERV filters. Tim from The Heat Pump Store said that air filtering is considered a separate system, from heating/cooling, in places where heat pumps are most prevalent, and people typically buy another device for air filtration. 

Brands

There are four leading brands of ductless heat pumps: Mitsubishi, Fujitsu, LG, and Daikin. Most of the top brands are Japanese, given they first developed the technology. This NY Times article has some solid reviews on each of these four brands.

Choosing a contractor

Finding a good installer is important. Many contractors may try to talk you out of electric heating and cooling (and into gas). Plus, you’ll want someone to help you correctly size a system for your needs. That means someone with lots of experience in ductless heat pump systems as well as a good reputation and reviews. Getting three bids is always a solid strategy. One pro tip is to look on a manufacturer’s page for contractors in your area that are certified to install their product.

Photo Courtesy of The Heat Pump Store

Cost and Aesthetics

As Tim told me in our interview, ductless heat pumps aren’t a panacea. Any technology has its downsides. As my wife points out, the indoor equipment that sits high on your wall takes up space and isn’t the most beautiful thing in the world. Ductless Heat Pumps can also be expensive. A system with a single indoor unit can run $3,000–$5,000, but if you’re putting multiple “heads” throughout your house, costs can quickly go over $10,000. 

Yet, for me, after 9 years of heating and cooling our house with ductless heat pumps, and with the climate emergency we find ourselves in, any drawbacks to ductless heat pumps are vastly outweighed by their immense benefits. Heat pumps are the heating and cooling technology for this era of climate change, and ductless heat pumps are the most efficient versions of this technology. They allow us to get off fossil fuels and efficiently heat and cool, in any climate, with clean electricity.

Learn more and do a deep dive into Ductless Heat Pumps with Tim from the Heat Pump Store in a recent webinar I hosted with Electrify Now, and let us know about your thoughts and experiences with ductless heat pumps in the comments below!

Photo courtesy of The Heat Pump Store

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GM’s promised affordable EVs hit another hurdle, but there’s more to the story

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GM's promised affordable EVs hit another hurdle, but there's more to the story

The new Chevy Bolt EV is set to enter production later this year, with one fewer shift, following GM’s reduction in production plans at several US plants. Apart from the Bolt, GM promised a new family of affordable EVs. Are those, too, now at risk?

GM says more affordable EVs are coming, but when?

GM remained the number two EV maker in the US after back-to-back record sales months in July and August. However, with the $7,500 federal tax credit set to expire at the end of the month, the company expects a slowdown.

On Thursday, GM sent a note to employees at its Spring Hill plant in Tennessee, outlining plans to reduce output of two Cadillac electric SUVs, the Lyriq and Vistiq.

A source close to the matter confirmed the news to Reuters, saying the production halt will begin in December. GM will significantly reduce output during the first five months of 2026, according to the source.

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GM is also delaying the second shift at its Fairfax Assembly Plant in Kansas City, where the new Chevy Bolt is slated to enter production later this year. The Bolt will be the first of a new series of affordable EVs that GM intends to build in Kansas.

GM-affordable-EVs
GM plans to build a “next-gen affordable EV) in Kansas (Source: GM)

However, those too, may now be in jeopardy. According to local news outlets, GM Korea Technical Research Center (GMTCK), a spin-off of GM’s Korean subsidiary, was recently cut out of a secret small EV project it was developing.

GMTCK president Brian McMurray reportedly announced internally last month during a trip to the US that the project was cancelled and only 30% to 40% complete.

A GM Korea spokesperson clarified that “the EV project being led by GMTCK was a global undertaking, not undertaken solely by GM Korea. The spokesperson added, “The project itself has not been canceled; the role of the Korean team has simply changed.”

The new electric car, dubbed “Fun Family,” was scheduled to launch under the Chevy and Buick brands, using a single platform. Production was expected to begin in 2027 with deliveries starting in 2028.

Chevy-Bolt-EV
2022 Chevy Bolt EUV (Source: GM)

GM Korea exports over 90% of the vehicles it makes to the US, but with the new auto tariffs, the subsidiary is expected to play a drastically smaller role, if any at all. The news is fueling the ongoing rumors that GM could withdraw from Korea altogether.

In addition to the tariffs, South Korea’s recently passed “Yellow Envelope Law” could make it even more difficult for GM with new labor laws.

Chevy-Equinox-EV-discounts
Chevy Equinox EV LT (Source: GM)

Will this impact the affordable EVs GM is promising to launch in the US? They are scheduled to be built in Kansas, but with the R&D Center, GM’s second largest globally, following the US, claiming to be excluded from a major global EV project, it can’t be a good sign.

In the meantime, GM already has one of the most affordable electric vehicles in the US, the Chevy Equinox EV. Starting at under $35,000, the company calls it “America’s most affordable” EV with over 315 miles of range.

With the $7,500 federal tax credit still available, GM is promoting Chevy Equinox EV leases for under $250 a month. Nowadays, it’s hard to find any vehicle for under that.

Source: Newsworks Korea

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Connecticut, Rhode Island sue Trump to save 80% complete offshore wind farm

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Connecticut, Rhode Island sue Trump to save 80% complete offshore wind farm

Connecticut and Rhode Island are suing the Trump administration to overturn its “baseless” decision to halt Revolution Wind, a nearly completed offshore wind farm set to deliver clean power to New England.

Attorneys General William Tong of Connecticut and Peter Neronha of Rhode Island announced Thursday that they’ll file suit in Rhode Island federal court to overturn the August 22 stop-work order from the Bureau of Ocean and Energy Management (BOEM). The order abruptly shut down construction without citing any violation of law or safety threats. Instead, BOEM vaguely referred to “concerns” under its Outer Continental Shelf Lands Act authority, offering no explanation.

Revolution Wind is 15 nautical miles off Rhode Island and expected to come online in 2026. Once complete, the $6 billion project would supply 350,000 homes with electricity and save ratepayers in Connecticut and Rhode Island hundreds of millions of dollars over 20 years. The project supports more than 2,500 jobs across the US, including over 1,000 union construction jobs, and has already cleared every required state and federal review. Construction is already 80% complete.

The lawsuit, to be filed against the Department of the Interior, BOEM, and their nominated leaders, argues that the stop-work order violates the Administrative Procedure Act and the agency’s authority under OCSLA. The complaint says the government’s action is arbitrary, capricious, and undermines both states’ legal and financial commitments.

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“Revolution Wind is fully permitted, nearly complete, and months from providing enough American-made, clean, affordable energy to power 350,000 homes. Now, with zero justification, Trump wants to mothball the project, send workers home, and saddle Connecticut families with millions of dollars in higher energy costs,” Tong said. “This kind of erratic and reckless governing is blatantly illegal, and we’re suing to stop it.”

Neronha added, “With Revolution Wind, we have an opportunity to create good-paying jobs for Rhode Islanders, enhance energy reliability, and ensure energy cost savings while protecting our environment. And yet, this stop-work order is not even the latest development in this administration’s all-out assault on wind energy. Just yesterday, we learned of reports that the Administration is pulling in staff from several different unrelated federal agencies, including Health and Human Services, to do its bidding. This is bizarre, this is unlawful, this is potentially devastating, and we won’t stand by and watch it happen.”

Connecticut Governor Ned Lamont said the administration has offered no explanation nearly two weeks after the order. “We hoped to work with the Administration to lower energy costs, strengthen grid reliability, create jobs, and drive economic growth, but only if they share those goals. But if they do not, we will act to preserve this vital project and protect the energy future of Connecticut and the entire New England region,” he said.

Senator Richard Blumenthal (D-CT) called the shutdown “insane, illogical, and illegal,” while Senator Chris Murphy (D-CT) said, “The Revolution Wind project has already made it through exhaustive reviews by multiple federal agencies, and I doubt Trump’s flimsy excuses for scuttling this project will stand up to legal scrutiny.”

Danish renewables developer Ørsted, which owns a 50% share in Revolution Wind, also announced Thursday that it’s suing the Trump administration in a bid to restart construction on the blocked wind farm.

Read more: Trump’s latest offshore wind cancellation is a threat to the grid – ISO New England


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Canada may get cheap Chinese EVs because of cooking oil – here’s why

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Canada may get cheap Chinese EVs because of cooking oil - here's why

Canada is “reviewing” its current 100% tariff on Chinese EVs, which could potentially give another entry point for the inexpensive, advanced vehicles into the North American market.

The strange part? The review is being pushed for, mainly, by the premiers of right-leaning provinces. And it has everything to do with your cooking oil.

The news of the review came yesterday from the National Post, who confirmed with Canada’s national finance minister that “officials are currently undertaking work on this review, including an assessment of China’s policies and trade practices, and whether the scope of the surtaxes, as well as the surtax rate, remain appropriate.”

Canada currently has a 100% tariff (surtax) on Chinese EVs and a 25% tariff on Chinese steel and aluminum, implemented last October. Canada’s tariffs came after similar tariffs implemented by US President Biden, though they were justified by claiming that China engages in unfair competition in EVs.

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The country does have a significant auto industry, with about 10% of Canada’s exports consisting of cars, trucks and the parts and accessories for each. This auto industry is heavily tied with the US auto industry, which is centered in Detroit, a literal stone’s throw away from the Canadian border.

As a result, Canada followed the US’ lead with tariffs, recognizing that our two countries, historically tied together by the close trade and cultural relationships across the longest border on Earth should be on the same page about an industry that is shared and important to each of us (nevermind that the US tariffs were dumb to begin with).

A souring US-Canada relationship

But since then, things have changed. A contentious election in the US led to the dumbest person on the planet squatting in an office that he is Constitutionally barred from holding, and after that election the ignoramus in question illegally imposed even dumber tariffs on China and the rest of the world.

The same ignoramus also made numerous threats against Canada’s sovereignty and targeted the country with tariffs despite the close relationship between the US and Canada.

This caused disruption in Canada’s auto industry, including immediate job losses and a scramble to beg for exemptions for the industry that has long-benefitted from free cross-border movement of supplies. (Canadian Prime Minister Mark Carney today cited US tariffs as his reason for delaying Canada’s EV transition, showing how the actions of US republicans aren’t just poisoning Americans, but Canadians as well.

All told, all of this nonsense had the primary effect of swinging a sure-bet election for Canada’s right-wing into a solid win for the incumbent Liberal party.

And it has left Canadians thinking more about their own national identity, and searching to establish some independence from the United States of America’s whims on the International stage.

It’s all about cooking oil

With the US-Canada relationship already soured, China struck a characteristically surgical blow. In response to Canada’s tariffs on EVs, China announced it would impose heavy tariffs of 76% on… canola. Yes, the thing that’s in your cooking oil.

Canada is the world’s top producer of canola, ahead of China. And China is the world’s top consumer of canola (though US is Canada’s largest buyer of canola). So, China’s move removes a big market for Canadian farmers and disrupts the global canola market significantly. It’s estimated this has cost Western Canadian farmers nearly a billion dollars already (China did a similar move in 2018 with a soybean tariff on the US).

Now here’s the rub: Western Canada is the more rural part of the country, with giant plains provinces like Saskatchewan and Alberta whose primary industries are farming and oil. That’s where the canola is grown. These provinces, predictably, are pretty conservative. And they’re mad about these tariffs.

Canada’s right-wing leads charge for Chinese EVs

And so, the right-wing premiers of both Saskatchewan and Alberta have recently demanded that the Canadian government remove tariffs on Chinese EVs, in the hope that it would get China to remove the tariffs that are currently ruining Canada’s canola farmers. Saskatchewan’s premier is even heading to China right now to negotiate.

From the US, this seems counterintuitive – why would the right-wing be asking for more EVs, when the right wing in the US is so stupidly against improving our transportation options.

And it even seems counterintuitive from the Canadian perspective, as the provinces of Alberta and Saskatchewan both have ridiculous registration taxes for electric cars, where EVs suffer high opposition due to the prominence of the oil industry in the each of them. Alberta, in particular, is often referred to as the “Texas of Canada,” and has a brewing separatist movement, some members of which want Alberta to join the USA. So how’s that for an inversion of expectations.

But as a result of the US’ haphazard tariff nonsense, its own allies in Canada (even specifically those in the Canadian right wing) have been pushed towards a deeper relationship with China, with Canadian PM Carney stating this week “there may be areas where… we can expand the commercial relationship with things that China does well.”

And the charge by right-wing premiers seems to be working. After yesterday’s announcement of the Canadian federal government’s “review” of Chinese EV tariffs, and the impending trip to China by Canadian trade officials and Saskatchewan Premier Scott Moe, China delayed the imposition of canola tariffs just today.

So, Canadian farmers get some breathing room – and depending on the results of the tariff “review,” if they end up getting access to cheap Chinese EVs, they might breathe more freely in more ways than one.


The 30% federal solar tax credit is ending this year. If you’ve ever considered going solar, now’s the time to act. To make sure you find a trusted, reliable solar installer near you that offers competitive pricing, check out EnergySage, a free service that makes it easy for you to go solar. It has hundreds of pre-vetted solar installers competing for your business, ensuring you get high-quality solutions and save 20-30% compared to going it alone. Plus, it’s free to use, and you won’t get sales calls until you select an installer and share your phone number with them.

Your personalized solar quotes are easy to compare online and you’ll get access to unbiased Energy Advisors to help you every step of the way. Get started here.

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