Ductless Heat Pumps Demystified
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
EV and battery supply chain research specialists Benchmark Mineral Intelligence reports that 2.0 million electric vehicles were sold globally in November 2025, bringing global EV sales to 18.5 million units year-to-date. That’s a 21% increase compared to the same period in 2024.
Europe was the clear growth leader in November, while North America continued to lag following the expiration of US EV tax credits. China, meanwhile, remains the world’s largest EV market by a wide margin.
Europe leads global growth
Europe’s EV market jumped 36% year-over-year in November 2025, with BEV sales up 35% and plug-in hybrid (PHEV) sales rising 39%. That brings Europe’s total EV sales to 3.8 million units for the year so far, up 33% compared to January–November 2024.
France finally returned to year-to-date growth in November, edging up 1% after spending most of 2025 in the red following earlier subsidy cuts. The rebound was led by OEMs such as the Volkswagen Group and Renault, a wider selection of EV models, and France’s “leasing social” program, aimed at helping lower-income households switch to EVs.
Italy also posted a standout month, logging record EV sales of just under 25,000 units in November. The surge followed the launch of a new incentive program designed to replace older ICE vehicles. The program earmarks €597.3 million (about $700 million) in funding for the replacement of around 39,000 gas cars.
The UK expanded access to its full £3,750 ($4,400) EV subsidy by adding five more eligible models: the Nissan Leaf (built in Sunderland, with deliveries starting in early 2026), the MINI Countryman, Renault 4, Renault 5, and Alpine A290.
US market slows after federal tax credit’s premature death
In North America, EV sales in the US did tick up month-over-month in November, following a sharp October drop after federal tax credits expired on September 30, 2025. Brands including Kia (up 30%), Hyundai (up 20%), Honda (up 11%), and Subaru (232 Solterra sales versus just 13 the month before) all saw gains, but overall volumes remain below levels when the federal tax credit was still available.
Policy changes aren’t helping. In early December, Trump formally “reset” US Corporate Average Fuel Economy (CAFE) standards, lowering the required fleetwide average to about 34.5 mpg by 2031. That’s a steep drop from the roughly 50.4 mpg target under the previous rule. Automakers can now meet the standard largely through gas vehicles, reducing pressure to scale BEVs and PHEVs.
Those loosened rules are already reflected in investment decisions, such as Stellantis’ $13 billion plan to expand US production by 50%, with a heavy focus on ICE vehicles. Earlier this year, Trump’s big bill set fines for missing CAFE targets to $0, further weakening the incentive for OEMs to electrify.
That’s some foolish policymaking, considering the world reached peak gas car sales in 2017. The US under Trump will be left behind, just as it will be with its attempts to revive the coal industry.
China still dominates, exports surge
China remains the backbone of global EV sales, even as growth slows. The Chinese market grew 3% year-over-year and 4% month-over-month in November. Year-to-date, EV sales in China are up 19%, with 11.6 million units sold.
One of the biggest headlines out of China is exports. BYD reported a record 131,935 EV exports in November, blowing past its previous high of around 90,000 units set in June. BYD sales in Europe have jumped more than fourfold this year to around 200,000 vehicles, doubled in Southeast Asia, and climbed by more than 50% in South America.
Global snapshot
Global EV sales from January to November 2025 vs January to November 2024, YTD %:
- Global: 18.5 million, +21%
- China: 11.6 million, +19%
- Europe: 3.8 million, +33%
- North America: 1.7 million, -1%
- Rest of World: 1.5 million, +48%
The takeaway: EV demand continues to grow worldwide, but policy support – or the lack thereof – is increasingly shaping where this growth shows up.
“Overall, EV demand remains resilient, supported by expanding model ranges and sustained policy incentives worldwide,” said Rho Motion data manager Charles Lester.
Read more: EV sales *still* have not fallen, cooled, slowed or slumped. Media is lying to you.
If you’re looking to replace your old HVAC equipment, it’s always a good idea to get quotes from a few installers. To make sure you’re finding a trusted, reliable HVAC installer near you that offers competitive pricing on heat pumps, check out EnergySage. EnergySage is a free service that makes it easy for you to get a heat pump. They have pre-vetted heat pump installers competing for your business, ensuring you get high quality solutions. Plus, it’s free to use!
Your personalized heat pump 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. – *ad
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The Elexio is Hyundai’s first electric SUV custom-tailored for the Chinese market, but now it’s headed overseas.
Hyundai is bringing the Elexio electric SUV overseas
Hyundai’s midsize electric SUV was spotted on a carrier truck in Melbourne, Australia, alongside a few of its other vehicles.
Although the Elexio is built by Hyundai’s joint venture with BAIC Motor, Beijing-Hyundai, “tailor-made for Chinese consumers,” we had a feeling it would be sold overseas.
A few months ago, Don Romano, CEO of Hyundai Australia, hinted that the midsize electric SUV could arrive in The Land Down Under. Romano told journalists during an IONIQ 9 launch event that the Elexio’s launch in Australia was “under evaluation,” calling it “a promising vehicle.”
Hyundai confirmed the rumors shortly after, saying the new midsize electric SUV would launch in Australia in early 2026.
According to CarsGuide, the Elexio was caught on a car carrier in Melbourne on Wednesday morning ahead of its official launch.
Powered by an 88.1 kWh battery, the Elexio delivers up to nearly 450 miles (722 km) CLTC range. It’s based on the E-GMP platform, which underpins all IONIQ models and Kia’s EV lineup, with single and dual-motor (AWD) powertrain options. The electric SUV can also recharge from 30% to 80% in about 27 minutes.
The interior is packed with advanced Chinese tech, including Huawei’s advanced driver-assistance systems (ADAS) and a Qualcomm Snapdragon 8295 chip that powers the massive 27″ 4K widescreen display.
The Elexio is 4,615 mm long, 1,875 mm wide, and 1,698 mm tall, with a wheelbase of 2,750 mm, which is a bit shorter than the Tesla Model Y. It’s closer in size to the BYD Yuan Plus, sold overseas as the Atto 3.
Hyundai’s midsize electric SUV is expected to compete with some of Australia’s top-selling EVs, including the Tesla Model Y and Geely EX5.
Prices have yet to be announced, but given the IONIQ 5 starts at $76,200 (AUD), before on-road costs, the Elexio should be slightly cheaper.
In China, the Elexio is available in three trims: Fun, Smart, or Tech, with pre-sale prices starting at RMB 119,800 ($16,900).
Although the electric SUV is launching in Australia and possibly other overseas markets like New Zealand, it’s not expected to be a true global vehicle. Hyundai designed it specifically for Chinese buyers, leveraging local tech and design elements.
For those in the US, if you’re looking for a midsize electric SUV, the IONIQ 5 is worth a look with 300+ miles of range, fast charging, and a spacious, tech-filled interior. With leases starting at just $189 a month, the IONIQ 5 is cheaper than most gas-powered cars in its class. You can use our link to find the Hyundai IONIQ 5 models closest to you.
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Iron-sodium battery makers Inlyte Energy just crossed an important line from lab to grid reality. The company has completed a factory acceptance test of its first field-ready iron-sodium battery energy storage system with reps from a major US utility in attendance.
Iron-sodium battery storage
The test took place at Inlyte’s facility near Derby in the UK, and was witnessed by representatives from Southern Company, one of the largest electric utilities in the US. The goal was to prove the performance and integration readiness of the whole system, which combines sodium metal chloride battery cells with inverters and control electronics. By Inlyte’s account, the system performed as expected and is ready for field deployment.
The energy storage market is growing fast, and utilities are looking beyond lithium‑ion. Iron-sodium battery storage systems are emerging as a compelling alternative to lithium-ion batteries for grid-scale use, as they rely on abundant, low-cost materials and offer strong safety and long-duration performance.
While lithium-ion batteries excel at fast response and short-to-medium-duration storage, iron-sodium systems are better suited for multi-hour to multi-day grid applications where cost, thermal stability, and long service life matter more than energy density.
The global energy storage market is projected to grow from approximately $70 billion in 2025 to over $150 billion by 2030. The US Department of Energy estimates the grid will need more than 225 gigawatts of long‑duration energy storage by 2050.
Inlyte is betting that iron‑sodium batteries can help fill that gap. The system tested in the UK utilizes what the company claims are the world’s largest sodium metal chloride battery cells and modules ever built, each capable of storing more than 300 kilowatt-hours of energy. The chemistry is designed to be lower-cost, safer, and longer-lasting than lithium-ion – key traits for grid-scale storage.
During the factory test, Inlyte’s battery system hit 83% round‑trip efficiency, including auxiliary loads. That puts it in the same range as high-performance lithium-ion systems and well above the roughly 40% to 70% efficiency typical of many other long-duration energy storage technologies. Southern Company’s R&D team observed the test in person, a step that helps clear the way for real‑world deployment.
The commercial plan
Next up: the field. Inlyte says its first energy storage systems will be installed at Southern Company’s Energy Storage Test Site in Wilsonville, Alabama, in early 2026. Those deployments will allow the utility to study how the iron‑sodium batteries perform under real grid conditions.
With technical readiness now demonstrated, Inlyte is turning its focus to US manufacturing. The company plans to finalize a site for its first domestic factory in 2026. To help speed that process, Inlyte has partnered with HORIEN Salt Battery Solutions, the world’s largest producer of sodium metal chloride batteries. HORIEN brings over 25 years of commercial experience across applications like critical power, remote industrial sites, and battery energy storage.
The plan is to combine HORIEN’s manufacturing know‑how with Inlyte’s system integration work to bring sodium‑based grid batteries to the US market. If all goes according to plan, Inlyte expects commercial deliveries of domestically produced systems to begin in 2027.
If you’re looking to replace your old HVAC equipment, it’s always a good idea to get quotes from a few installers. To make sure you’re finding a trusted, reliable HVAC installer near you that offers competitive pricing on heat pumps, check out EnergySage. EnergySage is a free service that makes it easy for you to get a heat pump. They have pre-vetted heat pump installers competing for your business, ensuring you get high quality solutions. Plus, it’s free to use!
Your personalized heat pump 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. – *ad
FTC: We use income earning auto affiliate links. More.
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