Experts Say Cooking with gas is hazardous to health, according to research that spans the last several decades. A recent study puts the issue in stark terms. Air inside homes can be more unhealthy than outdoor pollution even during a wild fire that fills the air with smoke.

Decades of advertising tell us that gas is cheap. Even without factoring in the cost of climate change, natural gas is no longer the least expensive choice for residential use. It’s a new era of cost-effective, low carbon, all-electric homes.

New homes and buildings will stand for decades, if not centuries. The carbon emissions embodied in the building materials and resulting from the manufacturing and construction processes must be factored into their overall carbon footprints. These four steps will get us started on the path to zero carbon.

Buses are going electric around the US and all over the world. Transit fleets and school districts are seeing the benefits of cleaner air and lower operating cost. And we all benefit from lower carbon emissions.

There’s no time to lose. We must move rapidly and decisively toward a carbon-neutral economy. Direct action is essential, but cannot happen fast enough. After you have reduced carbon in your home, vehicles, and businesses, there is still more to do. Here’s how.

Zero energy buildings are here and growing in the market. Now it’s time to set our sights on the next step in the evolution of building design and construction: zero carbon.

If you’ve ever heard that a mini-split heat pump wasn’t fulfilling its potential there is no mystery — the problem was almost certainly errors in design or installation. Here’s everything that needs to happen for a proper installation and reliable performance.

Zero energy homes are poised to go mainstream. Large builders have the scale necessary to launch the market into this new territory. Homebuyers save and builders profit.

Heat pump water heaters have been available for several years and are gradually gaining acceptance in new construction as well as in the replacement market. Here is guidance for the best application of this technology with an emphasis on colder climates.

Upgrading the energy performance of walls in an existing home is the most challenging aspect of a deep energy retrofit. One of these eight options will work for just about any zero energy renovation.

Zero energy homes have many benefits, and builders need to get better about sharing them with potential homebuyers. How can we expect buyers to choose zero if they don’t have a good answer to the essential question: Why? Here are several ways to answer that question.

Heat pumps are on track to replace heating systems that burn fossil fuels. Modern inverter-driven models can be extremely efficient, even at low outdoor temperatures, and they are capable of supplying all a home’s comfort needs. Here are three tips for builders and HVAC contractors to reach peak heat pump performance and keep customers happy.