How to Build an Energy Efficient Home

The U.S. Department of Energy offers two major pathways for building energy efficient homes:

The Energy Star program provides clear, proven guidelines for efficiency. The ZERH program goes a step further by preparing your home for Net Zero Energy; then you can just add solar panels in the future. So, to build an energy efficient home and future-proof your home start with the EcoSmart™ Stud (ESS) Wall System. The heavy lifting (site survey and math) is already done.

Where Does the EcoSmart™ Stud (ESS) Wall System Fit In?

Here’s where it gets exciting. To build an energy efficient home, your thermal envelope, especially the exterior wall, is a key factor. Both the Energy Star and ZERH programs follow the 2021/2024 Energy Code, which sets the standards for insulation performance.

The Exterior Wall Requirements

For climate zones 4–8, the code requires one of the following:

A wall system from a table of Continuous Insulation (CI) options
Or, a wall system with a U-Factor under 0.045

That’s where the ESS wall system comes in. Both the 2×6 and 2×8 EcoSmart™ Stud wall systems meet the required U-Factor meaning they check the box for performance without the high cost of traditional CI systems.

What About Climate Zones 1–3?

If you live in zones 1–3, you’re still allowed to use fiberglass insulation in your walls, for now. But if you’re serious about an energy efficient home, upgrading to ESS will give your improved wall strength, and environmental benefits at no extra cost.

Why the ESS Wall System Matters for Energy Efficient Homes

So, what’s the big deal then? Well it’s COST! The ESS wall system not only meets code, it does so at a significantly lower cost than standard CI wall assemblies. That means:

More of your budget goes toward other parts of the program
Rebates stretch farther
You get stronger, more durable exterior walls
And you build energy efficient homes that perform better long-term
All without spending more.

The Bottom Line

If you’re looking to build an energy efficient home, the EcoSmart™ Stud (ESS) wall system is a smart, cost-effective solution. It meets code, supports rebate programs, and builds a better wall, all while keeping more money in your pocket.

Want to know just how big the cost difference is? Stay tuned for our next post. Here’s a hint: it’s BIG.

Cheers!