Renewing Homes

Ben Hildebrandt

How do we improve existing homes in ways that are durable, practical, and built for long-term performance? Renewing Homes is a long-form podcast about residential retrofits and the real-world complexity of improving existing homes. Hosted by Ben Hildebrandt, the show features thoughtful conversations with builders, designers, researchers, policymakers, and industry leaders working across Canada and North America. Episodes explore building science, retrofit strategy, house-as-a-system thinking, workforce challenges, policy, and the practical trade-offs involved in improving homes for comfort, durability, efficiency, and long-term performance. Whether you work in construction, design, research, or program delivery, Renewing Homes is a space for deeper conversations about what it takes to create better homes through better retrofits.

Episodes

  1. 4d ago

    005 - Rethinking Residential Electrification

    In this episode of Renewing Homes, I’m joined by Nathan Horton of One Click Energy Solutions and Jason Rowley of BC Hydro to explore one of the biggest barriers to residential electrification: electrical service capacity. As more homeowners look to install heat pumps, EV chargers, and other electric technologies, many are told they need costly electrical service upgrades before they can move forward. But is that always the case? Nathan and Jason explain how energy management systems (EMS), evolving electrical codes, and better planning are changing what's possible. We discuss the practical realities of electrifying existing homes, lessons learned from Ontario's experience, and how collaboration between contractors, utilities, regulators, and policymakers can make electrification more accessible and affordable. Whether you're a contractor, designer, energy advisor, utility professional, or homeowner, this conversation offers practical insights into removing barriers and accelerating residential retrofits. Key TakeawaysResidential electrification is about more than switching fuels—it’s about improving how homes perform.Electrical service upgrades aren't always necessary when energy management systems are used effectively.Modern load management can help reduce project costs while supporting broader electrification goals.Codes and standards continue to evolve alongside new technologies and industry experience.Collaboration between contractors, utilities, regulators, and manufacturers is essential to accelerating adoption.Education and familiarity with emerging technologies will help make electrification more practical and accessible.Chapters00:00 Introduction 02:29 Electrification and retrofit basics 04:20 Barriers to electrifying homes 11:48 Smart panels, standards, and code 16:58 Right-sizing electrical service 22:11 Affordable housing case study 25:45 What contractors need to know 37:07 Navigating variances and approvals 41:56 Education and the road ahead LinksOne Click Energy Solutions - https://1clickenergy.com/ BC Hydro - https://www.bchydro.com/ Passive House Alberta Electrification Without a Service Upgrade Report - https://www.passivehousecanada.com/wp-content/uploads/2023/08/20231026-Electrification-without-a-service-upgrade-report.pdf

    005 - Rethinking Residential Electrification
  2. Jul 20

    004 - How Curiosity Built a Retrofit Leader

    In this episode of Renewing Homes, I sit down with Peter Darlington of Solar Homes and Cooper Le of 4 Elements to explore Peter's journey from stucco contractor to one of Canada's leading residential retrofit specialists. What began as curiosity about net zero homes led Peter to undertake one of Canada's first CHBA Net Zero labelled renovations on his own home… Several years before the label even existed! That experience transformed his business and continues to shape how he approaches residential retrofits today. Our conversation explores the importance of planning, building science, and collaboration in delivering successful retrofits. We discuss homeowner motivations, the comfort and health benefits of high-performance homes, lessons learned from over a decade of living with a cold-climate heat pump, and the opportunities and challenges of scaling quality retrofit work across the industry. Whether you're a homeowner, contractor, designer, energy advisor, or policymaker, this episode offers practical insights into what it takes to deliver better retrofit outcomes. Key TakeawaysCuriosity and continuous learning can transform both careers and businesses.Deep energy retrofits require thoughtful planning and collaboration long before construction begins.Comfort, health, and resilience are often stronger homeowner motivators than energy savings alone.Living with a cold-climate heat pump for over a decade provides valuable real-world performance insights.Successful retrofits balance technical performance, durability, practicality, and cost.Scaling residential retrofits depends on simplifying good building science and improving industry capability.Every home is different, making thoughtful planning essential to achieving the best outcomes.Chapters00:18 Introduction to Sustainable Building Practices 01:52 Peter's Journey to Net Zero Retrofits 08:23 Collaboration with Four Elements 13:23 The Comfort and Health Benefits of Net Zero Homes 19:56 Cost Considerations in Home Retrofits 24:12 The Impact of Hail on Building Retrofits 25:50 Planning for Effective Retrofits 29:02 The Evolution of Building Practices 31:16 Challenges in New Builds and Hail Damage 32:54 Scalability in Retrofit Projects 33:52 Recognizing Value in Energy Efficiency 36:21 Heat Pump Performance in a 2015 Retrofit 37:18 Experiences with Heat Pumps 40:23 Lessons Learned from Home Retrofits 44:51 Simplifying Building Science for Better Outcomes LinksSolar Homes - https://www.solarhomesinc.com/ 4 Elements - https://www.4elements.eco/ Original Green Energy Futures feature on Peter Darlington's net zero home: https://greenenergyfutures.ca/episode/178-renovating-your-home-to-net-zero Nate Adams' Heat Pump Climate Tool: https://www.natethehousewhisperer.com/how-much-of-the-year-will-a-heat-pump-work-in-my-city.html

    004 - How Curiosity Built a Retrofit Leader
  3. Jun 22

    003 - Where Does Hydronic Heating Fit in a Retrofit?

    In this episode of Renewing Homes, I sit down with Michael Ridler, Stephen Magneron, and Fellipe Falluh to explore where hydronic systems fit within residential retrofits. We discuss hydronic heating and cooling, distribution methods, air-to-water heat pumps, thermal storage, zoning, and how hydronics compare to conventional forced-air systems. The conversation also examines the role hydronics could play in an increasingly electrified future. From demand-side management and peak load reduction to opportunities for reusing existing infrastructure, we explore both the benefits and limitations of hydronic systems in retrofit applications. As with most retrofit decisions, there is no one-size-fits-all answer. The right solution depends on the home, the homeowner's goals, and the challenges the project is trying to solve. Key TakeawaysHydronic systems can provide heating and cooling through radiant floors, panel radiators, fan coils, and chilled water systems.Existing hydronic distribution systems may offer a pathway to electrification without replacing the entire heating system.Thermal storage can help shift energy use and may become increasingly valuable as electrification expands.Hydronic systems can provide advantages in comfort, zoning, and quiet operation.Converting a forced-air home to hydronics is possible, but not always practical. Whether you're a homeowner, contractor, designer, or energy advisor, this episode provides a practical look at the opportunities and challenges of hydronic heating in residential retrofits. Chapters00:00 Introduction to Hydronics and Participants 03:21 Understanding Hydronic Heating Systems 05:56 Components of Hydronic Systems and Retrofitting 08:53 Peak Demand and Energy Efficiency 11:49 Utility Incentives and Consumer Choices 15:49 Barriers to Utility Adoption of Innovative Systems 18:39 Connecting Industry Insights and Innovations 19:34 Integrating Hydronic Systems into Projects 23:30 Resilience and Thermal Storage in Hydronics 27:18 The Power of Ductless Systems 30:55 Innovative Heating Solutions for Multi-Unit Buildings 35:46 Retrofitting Forced Air Systems to Hydronic Heating 43:05 The Benefits of Hydronic Heating Systems 50:20 Challenges and Opportunities in Hydronic System Installation 54:27 Closing LinksEden Energy Equipment HomeSol Building Solutions Retrofit Construction Eden Energy YouTube Channel - Learn more about hydronic systems: https://www.youtube.com/@EdenEnergyEquipment Building Science Podcast  - Episodes Discussing Hydronic Heating: Perspectives on Hydronics in the Real World with Robert Bean and Lance MacNevin Hydronics: The OG HVAC - Part 1 Hydronics: The OG HVAC - Part 2

    003 - Where Does Hydronic Heating Fit in a Retrofit?
  4. Jun 8

    002 - Beyond the Thermostat: What Makes a Home Comfortable?

    Most people think comfort comes down to the number on the thermostat. In reality, it's a lot more complicated than that. In this episode, I’m joined by Allison Bailes and Nate Adams to explore what actually makes a home comfortable. We discuss thermal comfort, mean radiant temperature, humidity, air movement, HVAC system design, and why two homes set to the same temperature can feel completely different. Along the way, we dig into common misconceptions, practical retrofit strategies, and the relationship between comfort, efficiency, durability, and indoor environmental quality. Whether you're a contractor, energy advisor, designer, or simply interested in how homes work, this conversation offers a deeper look at one of the main reasons people choose to retrofit in the first place: creating a home that feels better to live in. Key Takeaways: Comfort is about much more than air temperature. Mean radiant temperature, humidity, air movement, clothing, and activity levels all influence how we experience a space.A thermostat only tells part of the story. Two homes at the same temperature can feel very different depending on surface temperatures and how evenly conditions are maintained throughout the home.Comfort and efficiency are often aligned. Improvements that make a home more comfortable frequently deliver benefits in energy use, durability, indoor air quality, and even acoustics.HVAC sizing and system operation matter. Properly sized variable-speed equipment that runs for longer periods can often improve comfort more than many homeowners realize.There is no single solution for every home. Comfort improvements must be balanced against homeowner goals, existing conditions, and budget constraints.Building enclosures and mechanical systems both play a role. The most comfortable homes are typically the result of the enclosure, HVAC system, and occupants all working together.If you're trying to improve comfort, start by understanding the problem. Drafts, cold surfaces, disconnected ducts, poor airflow, oversized equipment, and humidity issues can all produce similar complaints but require very different solutions. One quote that captures the spirit of the conversation: "Design for people, good buildings follow." - Robert Bean That idea comes up repeatedly throughout the episode and serves as a useful reminder that comfort isn't just another performance metric, it's ultimately the reason people live in and invest in their homes. Chapters: 00:00 Introduction to Home Comfort and Backgrounds 03:53 Understanding Home Comfort 08:05 ASHRAE Standard 55 and Thermal Comfort 19:24 Common Reasons for Discomfort in Existing Homes 23:46 Sizing and Operation of HVAC Systems 28:19 The Importance of Proper Equipment Selection 33:15 Understanding Duct Leakage and Its Impact 38:02 The Challenges of Balancing Existing Duct Systems 46:29 Improving Building Shell for Thermal Comfort 52:42 Common Misunderstandings in Home Thermal Comfort 55:41 Where to Start to Learn About Home Comfort? 56:32 Design for People 57:22 Indoor Environmental Quality 58:36 Closing

    002 - Beyond the Thermostat: What Makes a Home Comfortable?

About

How do we improve existing homes in ways that are durable, practical, and built for long-term performance? Renewing Homes is a long-form podcast about residential retrofits and the real-world complexity of improving existing homes. Hosted by Ben Hildebrandt, the show features thoughtful conversations with builders, designers, researchers, policymakers, and industry leaders working across Canada and North America. Episodes explore building science, retrofit strategy, house-as-a-system thinking, workforce challenges, policy, and the practical trade-offs involved in improving homes for comfort, durability, efficiency, and long-term performance. Whether you work in construction, design, research, or program delivery, Renewing Homes is a space for deeper conversations about what it takes to create better homes through better retrofits.

You Might Also Like