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July 15, 2026

How To Make An Old House More Energy Efficient

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How to make an old house more energy efficient

How to make an old house more energy efficient starts with smart, measurable upgrades that target the biggest sources of waste while keeping comfort intact. By focusing on sealing leaks, upgrading heating and water-heating efficiency, and choosing smarter lighting and appliances, you can lower bills without sacrificing coziness. Start with a quick audit, then tackle the low-hanging fruit: seal drafts, improve insulation, and install efficient devices.

  • Seal air leaks with caulk and weatherstripping to cut heating and cooling costs.
  • Upgrade to LED lighting and ENERGY STAR appliances to reduce energy use.
  • Install a smart thermostat to optimize temperature settings and save energy.

Practical steps table

Area Recommended Action Estimated Saving
Attic & Insulation Add insulation and seal attic air leaks Significant yearly savings on heating costs
Air Leaks Seal doors, windows, outlets, and ductwork Up to 20% reduction in heating/cooling costs
Lighting Switch to LED bulbs; use daylighting where possible Lower electricity usage and longer bulb life
Heating & Cooling Install a smart thermostat; keep vents clear Potential 5–10% annual savings on HVAC
Water & Appliances Upgrade to ENERGY STAR appliances; install on-demand water heater if feasible Reduced energy and water bills over time

For practical, homeowner-focused tips, consider 14 simple low-cost ways to improve your home’s energy efficiency. Have you tried any of these upgrades in an older home? Share what worked for you, what surprised you, and what you’d do differently in the comments below. If you’re considering a plan, tell us which area you’ll start with first!

When it comes to retrofitting historic homes, it's essential to balance energy improvements with preservation. For insights into this approach, refer to Energy Advice for Owners of Historic and Older Homes. This resource emphasizes the importance of non-destructive upgrades and energy audits.

Looking for more categorized resources? Explore NYSERDA’s Energy Saving Improvement Ideas to find programs for weatherproofing, efficient appliances, heating/cooling upgrades, and financing options.

A great case study to illustrate these principles is the Lurie House: preserving a historic home while boosting energy efficiency, which showcases how to improve energy performance while retaining original materials and design elements.

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To delve deeper into policy opportunities surrounding energy efficiency upgrades, consider reading Aligning Historic Preservation and Energy Efficiency, which discusses legal and regulatory considerations.

For a comprehensive checklist tailored to older homes, check out Maximizing energy efficiency in older homes, which covers energy audits, envelope improvements, and HVAC updates.

If you're an electrician or inspector, you might find useful information on Enhancing energy efficiency in historic buildings (InterNACHI), focusing on preserving historic fabric while implementing necessary upgrades.

Lastly, for a practical guide on balancing efficiency with character, refer to Turn your charming old house into an energy-efficient home, which outlines air sealing, insulation strategies, and available incentives.

How to Perform a Whole-House Energy Audit | Ask This Old House
Kevin O'Connor and a specialist perform a whole-house energy audit. (See steps below.) SUBSCRIBE to This Old House: ...



When it comes to making your old house more energy efficient, it’s all about blending comfort with sustainability. Start by assessing your current energy usage and identifying areas where you can improve. Simple measures like sealing drafts around windows and doors or upgrading to energy-efficient appliances can make a huge difference without breaking the bank. Even investing in modern insulation materials can help your home retain heat during winter and stay cool in summer. Remember, every little bit counts when it comes to reducing your carbon footprint!

Stay Connected for More Tips!

I love exploring energy-efficient solutions, and I hope you find joy in revitalizing your home too! If you're looking for more tips, DIY inspiration, or just some great design ideas, be sure to follow me on Instagram at Architecture Adrenaline. Let’s share our journeys and support each other in creating cozy, efficient spaces that we can all cherish for years to come!

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Justin Ankus

Author
Justin Ankus is a designer, ceramicist, and digital media entrepreneur with a degree in architecture from the Illinois Institute of Technology in Chicago. He is the founder of JJ Clay Studio and the creator of Architecture Adrenaline, where he explores architecture, interiors, real estate, design, and creative living. His work blends architectural thinking, visual storytelling, automation, and hands-on making, with a focus on turning creative ideas into tangible projects across web, clay, and built environments.
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