Energy-Efficient Design

High Performance on a Limited Budget

John Siegenthaler's solution to an accessible high performance home unites a tight building enclosure with an ultra-efficient HVAC system.

One Building-Science Book to Lead Them All

Queen of Zero: Paying Homage to a Bygone Era of American Homebuilding

Building Well in the 21st Century: A Review of Pretty Good House

Reducing Carbon in Buildings

How I Got Faster Hot Water

Can you heat a home with a tankless unit?

The Path to Zero-Carbon, All-Electric Homes Leads to Profit

Living With a Heat Pump Water Heater

A Practical Solar Home for a Cold Climate

Frost-Damaged Tankless Hot Water Heaters

How Does a Heat Pump Actually Work?

Understanding Wall Assemblies

Conditioned And Unconditioned Unvented Attics

Concrete Solutions

Managing Solar Gain

Practical Air-Sealing

My Undersized Ducted Mini-Split Heat Pump

A Different Building Science Sunday

Reducing Carbon With Straw Panels

The Solar-Ready Rooftop

Window Positioning in a Fat Wall

Ventilation That Works

Addressing Embodied Carbon

Defining Efficiency Goals

Dumping Heat to the Pool

Practical Net Zero

A House in the Maine Woods

Reflective Roof Coatings Can Lower Energy Demands

2017’s Top 30 Markets for Commercial Green Building