Indoor Air Quality Is a Subject of Growing Concern  

As America moves away from the use of natural gas and propane for home heating and cooking, the danger of carbon monoxide will disappear, but there are many other pollutants that are getting homeowners’ and builders’ attention.

It’s rare that a home buyer doesn’t order a radon measurement and demand that the level of radon gas be reduced through mitigation to below the EPA action level.

Also of concern are “volatile organic compounds,” which come from carpeting, particle board and other construction materials and furnishings.

Exhausting these gases and bringing fresh air into a home is just as important as filtering the air that is in your home. A new appliance that you’ll hear more and more about and begin seeing alongside furnaces and water heaters in your utility room is the Energy Recovery Ventilator (ERV) or the Conditioning Energy Recovery Ventilator (CERV), which monitors air quality and responds accordingly. Google it to learn more about it.

Here’s More About Our Planned ‘Net Zero Store’  

By the time you read this article, Golden Real Estate’s move from 17695 S. Golden Road to 1214 Washington Avenue will be well underway.

Last week I announced that we will be transforming our old office space (which Rita and I own personally) into the home of a new venture Ty Scrable and I are calling The Net Zero Store.  It will be a one-stop shop for “all things sustainable,” selling and/or brokering products and services designed to reduce your home’s carbon footprint.

Among the products we will be selling or promoting are the following:

Solar Photovoltaic and Solar Thermal Systems

Sun Tunnels

Heat Pump HVAC Systems

Heat Pump Water Heaters

High-Efficiency Windows

Various Kinds of Home Insulation

HRVs and CERVs for Home Ventilation and Air Quality

Induction Cooktops

Condensing Clothes Dryers

Sustainable Countertop Choices

Electric Vehicle Charging Stations

 Among the services we will offer directly or through vendors are the following:

In-Home Consultations With a Sustainability Coach

Energy Audits

Blower Door Testing

Testing and Mitigation for Mold, Radon, Asbestos

Advice Regarding Electric Vehicles

ADUs and Tiny Homes

Webinars and In-Person Events on All Aspects of Sustainability

Reading/Video Lists for Further Study

Styrofoam Recycling

Unlike other stores, everyone you encounter at The Net Zero Store will be knowledgeable in all these areas. Ty and I are in the process of creating partnerships with vendors of these products and services. If you have a product or service you think should be featured in our store, please call Ty at 720-281-6783.

We are also recruiting volunteers to serve as sustainability coaches.

Passive House Technology Underlies Going ‘Net Zero Energy’

“Passive House” is a concept born in Germany as “PassivHaus” but growing in popularity here in America. Although its primary focus is on reducing the heating and cooling needs of a home through proper north/south orientation, the placement of windows, and roof overhangs, it also includes design elements that make a home better for its inhabitants. It has many other positive impacts as well, including healthier and quieter spaces, greater durability, and greater comfort for inhabitants.”

Prior to the oil embargo of 1973, home builders did not concern themselves much with making homes energy efficient, but that all changed as we quickly realized how dependent we were on foreign countries for fossil fuels to heat our homes and fuel our cars. Homes built before then were poorly insulated, drafty and less healthy.  (For example, lead-based paint wasn’t banned until 1978.)

The passive house concept took off in America as a result of that wake-up call. The “Lo-Cal” house created in 1976 consumed 60% less energy than the standard house at the time, and the concept continues to mature.

If you participated in any of the “green home” tours that Golden Real Estate co-sponsors each fall, you’ve learned about various passive home strategies in addition to “active” strategies such as solar power, heat pumps, geothermal heating, and energy recovery ventilators.

When “active” systems are introduced to a home with passive house design, they work more easily to create the ultimate goal of a “net zero energy” home — one which generates all the energy needed to heat, cool and power the home and, perhaps, charge the owner’s electric vehicles.  Without passive house design features, you can still achieve net zero energy, but it may require substantially more solar panels to compensate for such factors as inferior orientation, fenestration (windows) and insulation.

You can learn all about passive home technology, including trainings and public events, online at www.phius.org. Also, search “Passive House SW” at www.meetup.org for local events.

An excellent example of new construction which combines passive house design with smart active systems in the Geos Community in Arvada, which you can learn about online at www.DiscoverGeos.com. The homes in Geos are all oriented to maximize solar gain in the winter, but also designed for sun shading in the summer. Some have a geothermal heating, while others have air source heat pumps and conditioning energy recovery ventilators (CERVs). The CERVs installed in the Geos homes not only provide heat when needed but also track the level of CO2 and volatile organic compounds (VOCs) in the air and adjust their function to reduce those levels, thereby improving indoor air quality.

None of the Geos homes uses natural gas, just solar-generated electricity.