May 10, 2021 Breaking News, Latest News, and Videos

EarthTalk:

Dear EarthTalk: I recently saw a reference to “Enertia houses” that require little in the way of external sources for heating or cooling. Do you have any information on this housing design?

Enertia is a brand name for homes designed and sold in kits by North Carolina-based Enertia Building Systems (EBS). The idea essentially marries the concepts of geothermal and passive solar heating/cooling into what amounts to a highly energy efficient hybrid system. Architectural inventor Michael Sykes coined the term “Enertia” in the 1980s to describe the innovative homes he was designing that would store solar and geothermal energy and make use of it for most if not all heating and cooling needs.

Under such a system, solid wood walls replace siding, framing, insulation and paneling, while an air flow channel—or “envelope”—runs around the building inside the walls, creating what Sykes terms a miniature biosphere. Inside the envelope, solar heated air circulates, pumping and boosting geothermal energy from beneath the house and storing it within the wood mass of the walls, where it is doled out gradually.

By harnessing the properties of thermal inertia—the ability of materials to store heat and give it off slowly—an “Enertia” house maintains a relatively fixed and comfortable temperature throughout the warmer day (when solar heat is collected and stored) and cooler night (when the wood walls give off heat to keep things toasty as the mercury dips).

The heart of the system is a south-facing sun space within the envelope that is dominated by windows and which therefore soaks up lots of solar energy, filling the house’s wood walls with thermal energy that in turn radiates into the primary living space. The entire house functions like an electric heat pump—moving warm and cool air around to accommodate the comfort needs of the occupants. It works even throughout the seasonal changes of the year—with minimal to no fossil fuels consumed or pollution generated.

In one Enertia house in North Carolina, the only power bill the owners typically pay is $35/month for electricity. They also have a back-up in-floor radiant heating system powered by natural gas for long cloudy stretches or unusually cold weather. Gas bills for heat typically total $150 for the year, meaning the owners’ total annual outlay for heating, cooling and electricity is less than $600—some $1,000 less than traditional homes in the same zip code are paying, according to data from the U.S. Department of Energy.

EBS markets several different designs for its Enertia houses, but all share the basic premise of primary interior living space heated and cooled by air channeled in from a south-facing “buffer zone” envelope and from below grade. Smaller houses in the line top out at about 2,000 square feet over two floors of living space, while larger ones encompass some 4,000 square feet of living space over three floors. Depending on the model, you could spend anywhere from $66,000 to $292,000 for a complete plan and building materials kit. The rest—including the selection and cost of the land and the labor to build the house—is up to you.

in News
Related Posts

Free LA Metro Rides Could Begin This Summer

May 7, 2021

May 7, 2021

Metro looking at late Summer Launching For fareless transit pilot program By Toi Creel K-12 students and low-income residents could...

Santa Monica High Named Among Top 1,000 High Schools in the Country

May 7, 2021

May 7, 2021

Schools were rated on overall academic performance By Toi Creel Samohi has been named one of the best high schools...

Metro Bike Share Relaunches on Westside

May 6, 2021

May 6, 2021

Program back after being suspended in September By Chad Winthrop LA Metro’s bike share system is back on the Westside. ...

Santa Monica Freeway Sees Second Fatality of Week

May 6, 2021

May 6, 2021

Multi-vehicle crash kills one person Wednesday night By Sam Catanzaro One person was killed in a six-vehicle crash on the...

Riviera Mansion on Market for $25 Million

May 4, 2021

May 4, 2021

 6 bedroom, 10 bathroom Riviera mansion hits market  By Chad Winthrop A nearly century-old Riviera mansion complete with a speakeasy...

Venice’s Fox Theater Revamp

May 4, 2021

May 4, 2021

A developer wants to revamp the historic Fox Theater building in Venice. Learn more in this video made possible by...

Edify TV: Site Work Begins on Nearly Billion Dollar LAX Station

May 4, 2021

May 4, 2021

Site work has begun for a nearly billion dollar light rail transit station coming to LAX. Learn more in this...

Nearly 50-Unit Affordable Housing Complex Breaks Ground in Santa Monica

May 4, 2021

May 4, 2021

Development combines retail and residential units  By Toi Creel A 50-unit affordable housing complex recently broke ground in Santa Monica’s...

Edify TV: Concert Capacity Rules Issue for Small Venues

May 4, 2021

May 4, 2021

Live music is back in LA County but the owner of a Westside jazz club says reopening will have to...

Santa Monica City Council Gives Green Light to Pursue Main Street Closures

May 3, 2021

May 3, 2021

Lawmakers instruct staff to develop proposal that would close Main Street to vehicles on weekends By Sam Catanzaro Santa Monica’s...

Rents on The Rise In Santa Monica: Santa Monica Beat – May, 3, 2021

May 3, 2021

May 3, 2021

Local news and culture in under 5 minutes. * Rents on The Rise In Santa Monica * Natural Gas Leak...

Woman Killed by Vehicle on 10 Freeway in Santa Monica

May 3, 2021

May 3, 2021

Victim struck at Cloverfield Boulevard on-ramp Sunday night By Sam Catanzaro A woman was struck and killed by a vehicle...