Geothermal vs Air Source Heat Pump: Which is Worth It? What if the most efficient way to heat and cool your home might not actually be the best choice for you? Geothermal heat pumps are the gold standard for efficiency. They're also the most expensive upfront investment you can make in your home's HVAC system. So, are they really worth it? Or should you go with an air source heat pump instead? I've been living with my geothermal system for two years now. I reached out to my friend Paul Braren, who installed an air source heat pump system in his home around the same time I was building mine. We're both in New England, we both have detailed energy monitoring, and we both ditched fossil fuels completely. It’s the perfect setup for a real-world comparison. Here's the thing, though. After crunching the numbers, this isn't going to be the straightforward "geothermal wins" or "air source is better" story you might expect. The actual data surprised both of us.

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Paul Braren - After 4 New England Winters Living With Just Heat Pumps - https://tinkertry.com/planning-for-heat-pump-comfort

Watch How 40-Ton Spinning Wheels Are Saving The Power Grid https://youtu.be/Z95t-f-0IjI?list=PLnTSM-ORSgi7uzySCXq8VXhodHB5B5OiQ

Video script and citations: https://undecided.tech/geothermal-vs-air-source-heat-pump-which-is-worth-it/

Get my achieve energy security with solar guide: https://link.undecidedmf.com/solar-guide

Follow-up podcast:

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Chapters

00:00 - Intro

01:56 - My Geothermal Journey

02:59 - Paul's Air Source Experience

04:10 - The Contractor Reality

05:17 - Living With The Systems

08:27 - The Dehumidifier Situation

09:13 - The ERV Integration Issue

10:32 - The Data Showdown

12:53 - Seasonal Performance

14:25 - The Cost Question

16:46 - The New England Challenge

17:32 - When Each System Makes Sense

How a Mechanical Battery Could Prevent Deadly Blackouts. Go to https://surfshark.com/undecided or use code UNDECIDED at checkout to get 4 extra months of Surfshark VPN! When Spain's power grid failed on April 28th, 2025, it quickly became a very serious issue. Not only for the economic impacts, but life-or-death serious due to multiple, indirect deaths associated to the blackout. Emergency services, transportation, communication and other vital services were halted during this power outage. Not only did it blackout Spain, it also hit Portugal, parts of France and Morocco. But here's the thing … the UK went through something very similar back in 2019. The difference is: they've already figured out how to stop it from happening again. Spoiler: it involves 40 metric ton flywheels. Lots of them. We've covered flywheels before. But there's a wild new use case involving technology originally designed for space lasers. Yeah, you heard that right.

Watch What This Aluminum‑Ion Breakthrough Means for You https://youtu.be/svHeBLgpRQs?list=PLnTSM-ORSgi7uzySCXq8VXhodHB5B5OiQ

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Get my achieve energy security with solar guide: https://link.undecidedmf.com/solar-guide

Follow-up podcast:

Video version - https://www.youtube.com/channel/UC4-aWB84Bupf5hxGqrwYqLA

Audio version - http://bit.ly/stilltbdfm

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What This Aluminum‑Ion Breakthrough Means for You. Take your personal data back with Incogni! Use code UNDECIDED at the link below and get 60% off an annual plan: http://incogni.com/undecided Your lights just flickered. Not for long. Just a split second. You probably didn't think much about it, but somewhere a battery may have just saved your city from a blackout. These kinds of batteries are for preventing the entire electrical grid from collapsing. And it turns out, the batteries doing this job need to be fundamentally different from the ones we've been talking about for years. A German research institute has built a battery that responds faster than you can blink. It's made from cheap, abundant aluminum instead of lithium, and it doesn't use a flammable electrolyte. In real-world grid tests, it reacted instantaneously to smooth out power fluctuations that would have caused widespread blackouts. But can a battery designed for speed and power instead of range actually scale into the grid-stabilizing role we desperately need?

Watch The 90% Price Crash That Changed Everything https://youtu.be/nrTCgZmUFCY?list=PLnTSM-ORSgi7uzySCXq8VXhodHB5B5OiQ

Video script and citations: https://undecidedmf.com/why-aluminum-batteries-could-beat-lithium/

Get my achieve energy security with solar guide: https://link.undecidedmf.com/solar-guide

Follow-up podcast:

Video version - https://www.youtube.com/channel/UC4-aWB84Bupf5hxGqrwYqLA

Audio version - http://bit.ly/stilltbdfm

Join the Undecided Discord server: https://link.undecidedmf.com/discord

👋 Support Undecided on Patreon! https://www.patreon.com/mattferrell

⚙️ Gear & Products I Like https://undecidedmf.com/shop/

Visit my Energysage Portal (US): Research solar panels, heat pumps, and more to get quotes for free! https://undecided.link/energysage

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I may earn a small commission for my endorsement or recommendation to products or services linked above, but I wouldn't put them here if I didn't like them. Your purchase helps support the channel and the videos I produce. Thank you.

Chapters

00:00 - Intro

06:22 - The Dual Ion Design

08:39 - The Aluminum Advantage

09:11 - The System Design Breakthrough

Why Everyone Gets Heat Pumps Wrong. Go to https://ground.news/undecided for an innovative way to stay fully informed on tech, energy, the climate and more. Save 40% on the Ground News unlimited access Vantage plan with my link. If you believe half of what you hear about heat pumps, you'd think they're a $20,000 scam that stops working the second it gets cold outside. But here's what the skeptics don't mention: modern heat pumps work in temperatures down to -26°C (that's -15°F), and those "reliability" complaints? They usually trace back to installation problems, which are shockingly common. The truth is, heat pumps are some of the most efficient climate control tools money can buy. Their financial and environmental benefits make them worth considering. Today I want to pull apart the biggest myths around heat pumps, so you can tell if they actually make sense for your home, in your climate, with your budget.

Watch The 90% Price Crash That Changed Everything https://youtu.be/nrTCgZmUFCY?list=PLnTSM-ORSgi7uzySCXq8VXhodHB5B5OiQ

Video script and citations: https://undecidedmf.com/episodes/

Get my achieve energy security with solar guide: https://link.undecidedmf.com/solar-guide

Follow-up podcast:

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Audio version - http://bit.ly/stilltbdfm

Join the Undecided Discord server: https://link.undecidedmf.com/discord

👋 Support Undecided on Patreon! https://www.patreon.com/mattferrell

⚙️ Gear & Products I Like https://undecidedmf.com/shop/

Visit my Energysage Portal (US):Research solar panels, heat pumps, and more to get quotes for free! https://undecided.link/energysage

For a curated solar buying experience (Canada) EnergyPal's free personalized quotes: https://energypal.com/undecided

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I may earn a small commission for my endorsement or recommendation to products or services linked above, but I wouldn't put them here if I didn't like them. Your purchase helps support the channel and the videos I produce. Thank you.

Chapters

00:00 - Intro

02:06 - The Cost

07:42 - The Cold

10:10 - The Competition

11:50 - The Conditions

13:13 - The Consistency

Are Sodium Batteries Already Dead? Take your personal data back with Incogni! Use code UNDECIDED at the link below and get 60% off an annual plan: http://incogni.com/undecided I’ve got sodium batteries right here in my hands, but three sodium battery companies went bankrupt in the last year. Another shut down voluntarily and returned $9 million to investors … even though their technology worked. And one had $25 million worth of orders sitting in their warehouse that they couldn't legally ship. While sodium batteries were busy getting better, lithium prices crashed by 90%. The one advantage sodium was supposed to have, just evaporated. And now we're left with a technology that works, products you can actually buy, but an industry that seems to be collapsing around it. So what does this mean for you? Should you avoid sodium batteries? Are they a dead-end technology? Or is this just growing pains before sodium takes over?

Watch Why This Solar Breakthrough Matters More Than Perovskite https://youtu.be/F_OPrOpccJs?list=PLnTSM-ORSgi7uzySCXq8VXhodHB5B5OiQ

Video script and citations: https://undecidedmf.com/are-sodium-batteries-already-dead/

Get my achieve energy security with solar guide: https://link.undecidedmf.com/solar-guide

Follow-up podcast: Video version - https://www.youtube.com/channel/UC4-aWB84Bupf5hxGqrwYqLA

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Join the Undecided Discord server: https://link.undecidedmf.com/discord

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Chapters

00:00 - Intro

01:56 - Batteries You Can Get Now

03:26 - The Sodium Cemetery

09:20 - But the Giants Are Still Betting Big

The Solar Underdog That Could Rival Perovskite. Go to https://surfshark.com/undecided or use code UNDECIDED at checkout to get 4 extra months of Surfshark VPN! Perovskite solar cells are smashing efficiency records and starting to hit the market, but what if the real future of solar is a material you’ve probably never heard of? It’s called kesterite, and new research suggests it could match perovskites’ efficiency without any toxic lead in the stack. That could mean even cheaper, cleaner, and more efficient solar panels for your home down the road. Scientists just simulated a version of kesterite that could reach a 33.56% efficiency, brushing up against the theoretical limit for solar cells. The kicker? Kesterite is durable, where perovskite struggles to survive the great outdoors. With new kesterite efficiency records set this past year… could this underdog race ahead of perovskite and reshape the future of solar?

Watch The Most Controversial Battery at CES 2026 https://youtu.be/Kt4c0o_3eyY?list=PLnTSM-ORSgi7uzySCXq8VXhodHB5B5OiQ

Video script and citations: https://undecidedmf.com/the-solar-underdog-that-could-rival-perovskite/

Get my achieve energy security with solar guide: https://link.undecidedmf.com/solar-guide

Follow-up podcast:

Video version - https://www.youtube.com/channel/UC4-aWB84Bupf5hxGqrwYqLA

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Join the Undecided Discord server: https://link.undecidedmf.com/discord

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Visit my Energysage Portal (US): Research solar panels, heat pumps, and more to get quotes for free! https://undecided.link/energysage

For a curated solar buying experience (Canada) EnergyPal's free personalized quotes: https://energypal.com/undecided

Tesla Referral Code: Get 1,000 free supercharging miles or a discount on Tesla Solar & Powerwalls https://ts.la/matthew84515

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BEST Things I Saw in Vegas at CES 2026. Ignite the Senses, Amplified by DREO AI. To learn more about DREO’s new line of products, go to https://bit.ly/3NxpQNa At CES 2026 I encountered tech that really stopped me in my tracks. A solid state battery claim so bold that even battery skeptics are doing a double take. Wireless power systems that charge your smart door lock with invisible light beams, windows that become noise-canceling headphones for your house, and a simple switch that could save you thousands on an electrical upgrade. So what were the highlights worth your attention?

Check out Ziroth’s video about Donut Labs’ Solid State Battery: https://youtu.be/Qsi-TS8PX7U?si=6CzFXBYpdEP2ldED

Watch How Graphene is Changing the World … Right Now https://youtu.be/9H1nwqjzVVc?list=PLnTSM-ORSgi7uzySCXq8VXhodHB5B5OiQ

Video script and citations: https://undecidedmf.com/best-things-i-saw-in-vegas-at-ces-2026/

Get my achieve energy security with solar guide: https://link.undecidedmf.com/solar-guide

Follow-up podcast:

Video version - https://www.youtube.com/channel/UC4-aWB84Bupf5hxGqrwYqLA

Audio version - http://bit.ly/stilltbdfm

Join the Undecided Discord server: https://link.undecidedmf.com/discord

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⚙️ Gear & Products I Like https://undecidedmf.com/shop/

Visit my Energysage Portal (US): Research solar panels, heat pumps, and more to get quotes for free! https://undecided.link/energysage

For a curated solar buying experience (Canada)EnergyPal's free personalized quotes: https://energypal.com/undecided

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#DREOCES2026 #DREOAlot #Misting #CES2026 #DREO #CES

How Graphene is Changing the World … Right Now. Go to https://ground.news/undecided for an innovative way to stay fully informed on tech, energy, the climate and more. Save 40% on the Ground News unlimited access Vantage plan with my link. What if your phone battery charged in seconds instead of hours? What if buildings could cut their carbon emissions in half? What if medical sensors could detect diseases years earlier than they do today? Graphene was supposed to deliver all of this and more. Since 2004, researchers called it a wonder material. It would revolutionize everything. 20 years later? Most of those promises fell flat. But now graphene supercapacitors are powering AI data centers. Graphene-enhanced concrete is being poured at industrial sites. Medical sensors using graphene are hitting the market. The trickle is turning into a flood. So what changed? How did graphene go from miracle material to overhyped curiosity to actually delivering results? And more importantly, how will these breakthroughs actually affect you?

Watch How My Geothermal Heat Pump Really Performed (2 Years) https://youtu.be/DTb7TKJzr5g?list=PLnTSM-ORSgi7uzySCXq8VXhodHB5B5OiQ

Video script and citations: https://undecidedmf.com/how-graphene-is-changing-the-world-right-now/

Get my achieve energy security with solar guide: https://link.undecidedmf.com/solar-guide

Follow-up podcast:

Video version - https://www.youtube.com/channel/UC4-aWB84Bupf5hxGqrwYqLA

Audio version - http://bit.ly/stilltbdfm

Join the Undecided Discord server: https://link.undecidedmf.com/discord

👋 Support Undecided on Patreon!

https://www.patreon.com/mattferrell

⚙️ Gear & Products I Like

https://undecidedmf.com/shop/

Visit my Energysage Portal (US): Research solar panels, heat pumps, and more to get quotes for free! https://undecided.link/energysage

For a curated solar buying experience (Canada)EnergyPal's free personalized quotes: https://energypal.com/undecided

Tesla Referral Code: Get 1,000 free supercharging miles or a discount on Tesla Solar & Powerwalls https://ts.la/matthew84515

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📺 YouTube Tools I Recommend

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I may earn a small commission for my endorsement or recommendation to products or services linked above, but I wouldn't put them here if I didn't like them. Your purchase helps support the channel and the videos I produce. Thank you.