Uploaded October 2025 | Updated September 2026, 2 weeks ago
What if decarbonising your home was as easy as taking a few photos on your phone?
It sounds impossible, but my guest this week is already making it happen.
In this episode of the Climate Confident Podcast, I chat with Grant Gunnison, founder and CEO of Zero Homes, and a former NASA and MIT engineer who’s turned his attention from rockets to radiators. Grant’s on a mission to tackle one of climate tech’s biggest blind spots: the 15–20% of U.S. emissions that come from single-family homes. His company is helping homeowners electrify their spaces, swapping fossil-fuel systems for clean, efficient technologies, without the usual headaches, delays, or spiralling costs.
You’ll hear how Zero Homes built a platform that lets anyone use their smartphone to capture a detailed 3D model of their home, generating a fully scoped, permit-ready plan for heat pumps, induction cooktops, or insulation upgrades — no site visit required. We explore how this breakthrough could help retrofit 60 million homes in the U.S. alone, cutting emissions, slashing energy bills, and giving contractors back hours of wasted time.
We also unpack why electrifying existing homes is harder than building new ones from scratch, what really drives homeowners to make the switch, and how the rebate and financing maze is being simplified with technology. Grant shares stories from the field, from customers thrilled by the simplicity of the process to contractors relieved they no longer need to spend unpaid hours driving from house to house.
If you care about climate tech, emissions reductions, or clean energy innovation, this conversation will open your eyes to how digital tools — not just policy — can transform how we heat, cool, and power our homes. As Grant puts it, electrification isn’t just about carbon; it’s about comfort, health, and creating smarter systems that work for everyone.
👉 What’s your take, could smartphone-led home scans be the key to mass electrification? Let me know below 👇
🎧 Listen to the full episode here: climateconfidentpodcast.com
📲 Subscribe for more conversations with leaders driving real climate impact:
• LinkedIn: linkedin.com/in/tomraftery
⏱️ Timestamps (coming soon)
00:00 – Intro
02:10 – From NASA and MIT to climate tech
06:20 – Why home electrification is so complex
10:45 – The Zero Homes smartphone scanning process
15:30 – Heat pumps, efficiency, and design challenges
20:50 – Cost savings and the end of “truck rolls”
26:00 – Comfort, air quality, and human behaviour
33:00 – The messy reality of rebates
38:00 – Scaling to 60 million homes
⸻
Keywords: climate tech, emissions reductions, home electrification, Zero Homes, sustainability, clean energy, renewable energy, heat pumps, decarbonisation, climate innovation, sustainable living, net zero, digital twins, energy efficiency, smart homes, carbon neutral, electrify everything, environmental impact, Tom Raftery, Climate Confident Podcast
What if decarbonising your home was as easy as taking a few photos on your phone?
It sounds impossible, but my guest this week is already making it happen.
In this episode of the Climate Confident Podcast, I chat with Grant Gunnison, founder and CEO of Zero Homes, and a former NASA and MIT engineer who’s turned his attention from rockets to radiators. Grant’s on a mission to tackle one of climate tech’s biggest blind spots: the 15–20% of U.S. emissions that come from single-family homes. His company is helping homeowners electrify their spaces, swapping fossil-fuel systems for clean, efficient technologies, without the usual headaches, delays, or spiralling costs.
You’ll hear how Zero Homes built a platform that lets anyone use their smartphone to capture a detailed 3D model of their home, generating a fully scoped, permit-ready plan for heat pumps, induction cooktops, or insulation upgrades — no site visit required. We explore how this breakthrough could help retrofit 60 million homes in the U.S. alone, cutting emissions, slashing energy bills, and giving contractors back hours of wasted time.
We also unpack why electrifying existing homes is harder than building new ones from scratch, what really drives homeowners to make the switch, and how the rebate and financing maze is being simplified with technology. Grant shares stories from the field, from customers thrilled by the simplicity of the process to contractors relieved they no longer need to spend unpaid hours driving from house to house.
If you care about climate tech, emissions reductions, or clean energy innovation, this conversation will open your eyes to how digital tools — not just policy — can transform how we heat, cool, and power our homes. As Grant puts it, electrification isn’t just about carbon; it’s about comfort, health, and creating smarter systems that work for everyone.
👉 What’s your take, could smartphone-led home scans be the key to mass electrification? Let me know below 👇
🎧 Listen to the full episode here: climateconfidentpodcast.com
📲 Subscribe for more conversations with leaders driving real climate impact:
• LinkedIn: linkedin.com/in/tomraftery
⏱️ Timestamps (coming soon)
00:00 – Intro
02:10 – From NASA and MIT to climate tech
06:20 – Why home electrification is so complex
10:45 – The Zero Homes smartphone scanning process
15:30 – Heat pumps, efficiency, and design challenges
20:50 – Cost savings and the end of “truck rolls”
26:00 – Comfort, air quality, and human behaviour
33:00 – The messy reality of rebates
38:00 – Scaling to 60 million homes
⸻
Keywords: climate tech, emissions reductions, home electrification, Zero Homes, sustainability, clean energy, renewable energy, heat pumps, decarbonisation, climate innovation, sustainable living, net zero, digital twins, energy efficiency, smart homes, carbon neutral, electrify everything, environmental impact, Tom Raftery, Climate Confident Podcast
