Category Archives: Uncategorized

Sparky Doubled the Air Leakage in this Home!

Sparky Doubled the Air Leakage in this Home This is the home. This is the hole that Sparky (electrician) “innocently” made to feed a wire to the light on the front porch of the High Performance Bungalow. I discovered it a day or two after our home performance diagnostics team, Carl Seville and Abe Kruger, of SK […]

Read More

Design-Build Roswell – A High Performance Bungalow

Design-Build Roswell – A High Performance Bungalow We recently finished the construction drawings and are ready to break ground on this new high performance home for homeowners in Roswell, Georgia, which is near Atlanta. It is one of our first design-build projects where LG Squared is the architect, the interior designer, the HVAC designer, AND the builder. In fact, […]

Read More

Handmade Barn Door makes Architects’ Condo Remodel

HANDMADE BARN DOOR MAKES ARCHITECTS’ CONDO REMODEL Without a doubt the 6′-0″ wide by 8′-0″ high barn door, made with wood salvaged from deconstructed homes in central Florida, is the first thing visitors notice in our 8th level condo in Midtown Atlanta. It was installed as part of the major remodeling we did last year. The barn door, along with […]

Read More

The HERS Index is THE Home Energy Efficiency Gauge

GET ON BOARD THE HERS TRAIN, YOU’LL BE GLAD YOU DID. The HERS Index is already the industry standard for measuring a home’s energy efficiency. In 2015, the International Energy Conservation Code (IECC) will allow the option for all new homes to use the HERS Index to comply. Considering that residential buildings account for approximately 36.5% (2012 figures) of […]

Read More

PGH at Serenbe is 90% Tighter than Energy Code – Before Drywall!!

Before drywall was installed, I tested the infiltration (air leakage) at the Proud Green Home (PGH) at Serenbe, and the home achieved 0.72 ach50, or 0.055 ELR (more on these numbers in a minute). In other words, it’s really tight!!! The 2009 International Residential Energy Code (IECC), which is adopted in most states, requires an infiltration rate of […]

Read More

I’m an HVAC Magician, I Make Mini-Splits Disappear

Making Mini-Splits Disappear A lot of homeowners and folks in the building industry in the United States don’t want to see their HVAC (a.k.a. heating and air) systems exposed, even if it means high performance, healthy living environment, and total control. There is a magical (OK, maybe that’s a bit of a stretch) way to have cake and […]

Read More

Improved Energy Codes, Diminishing Return, & a New Performance Baseline

It wasn’t long ago that the EPA’s ENERGY STAR New Homes Program created an uproar in the residential building community by releasing Version 3.0 of it’s volunteer 3rd party verification program. One of the biggest crack downs in the new version was it’s requirement for HVAC Contractors to test and verify their installations of the heating […]

Read More

ENERGY STAR Certified Home in Grant Park – Atlanta, GA

Recently, this house in the historic district of Grant Park, Atlanta, was certified through the ENERGY STAR New Homes program at the EPA. The final inspection revealed an air tightness of 0.77 ach50, which is near the maximum acceptable air infiltration level of the aggressive Passive House program (0.6 ach50). The final HERS Index was around 64, which means (among other […]

Read More

Designing for High Performance: Slab-On-Grade, Part I – Controlling Moisture Flow

We’re just a few weeks away from a computer generated, self-guided interactive virtual tour of the Proud Green Home at Serenbe, a design-build collaboration with The Imery Group. We’re using REVIT software to generate the 3D model, then  VIMTREK will animate the tour. What you will see in the tour is the home’s modern design, its 3 bedrooms […]

Read More