Decarbonize Your Hearth with an Electric Fireplace
CategoriesSustainable News Zero Energy Homes

Decarbonize Your Hearth with an Electric Fireplace

Humans have a primal attraction to a crackling flame and the ambience of a cozy fireplace. Architect Frank Lloyd Wright called the hearth the “the psychological center of the home,” and designed all his residences around a central fireplace.

For the majority of humans who now live in urban areas, a traditional wood-burning fireplace is not a practical or healthy option (for reasons we explain below). This reality has made gas fireplaces popular because they pair the beauty of fire with the convenience of a switch and without the hassle of chopping wood and lighting a flame. But because elimination of gas is a fundamental tenet of decarbonized living, and we all love a cozy fire, we need alternative decarbonized hearth options. Enter the electric fireplace.

The State of American Fireplaces

First, a little context on the hearths in American homes. Many new homes in the US have a fireplace, yet the traditional wood-burning one is disappearing. New homes with fireplaces of any kind declined by almost two-thirds from 1978 to 2017, possibly because fireplaces are plagued with problems like heat loss through the chimney, indoor air pollution, and risk of fire spreading. However, according to the National Association of Home Builders’ What Home Buyers Really Want, 55% and 48% of home buyers rate gas- and wood-burning fireplaces, respectively, as desirable or essential, and this share has been increasing since 2003.

Why Fireplaces Matter

Research consistently finds that traditional wood-burning and gas stoves are bad for indoor and outdoor air quality and create serious issues for human health and the environment. Burning wood releases harmful gas and particulate matter that leads to respiratory issues for people living in the home and around it. It’s one of the biggest sources of air pollution in the county where we live. Natural gas also pollutes indoors through combustion and leaks and releases significant outdoor pollution, including NOx and carbon dioxide. Air quality districts in California are beginning to phase out any natural gas combustion in the home because the air pollution exceeds that of gas power plants. Other countries have similar issues. In the UK, for example, fireplaces and stoves are now the largest single source of primary particle pollution, greater than traffic and industry!

Fortunately there is a great way to create a clean, healthy, low-carbon ambience with the feel of old school flames: the electric fireplace is the future home hearth. Because electricity is getting dramatically cleaner every year, with the rise of renewables and the demise of coal, electric fireplaces offer a cozy vibe without any of the negative health or environmental impacts.

Until recently, fireplaces were synonymous with combustion, and the words “electricity” and “fire” were rarely paired together in a positive way. When we think of electric heat, many of us imagine the glowing red, inefficient electric resistance coils that are hardly associated with a comforting fireplace. But like so many new, clean electric home technologies, the electric fireplace has undergone rapid, and appealing, changes over the past 10 years.

Mid-closeup of electric fireplace shows no-pollution "coals and flames" - photo

Benefits of Electric Fireplaces

The electric fireplace is a radically improved, often overlooked technology that has a lot going for it:

  • Ambience: You may be surprised to know that electric fireplaces can provide a great-looking flame. Thanks to LEDs and a mirror element that rolls and reflects light, many electric flames look pretty realistic. You can enjoy them around the clock and any time of year because most models allow you to use the flame without the heat. Some models offer an option to change the color below the flame, which is our kids’ favorite party trick. Some varieties come with a material that sits in front of or below the flame to anchor it like a real fire. Since there’s not a real flame, you can use whatever material you want, including wood or stone to give it a natural look.
  • Safety: Unlike combustion fireplaces, the electric varieties have no risk from open flames or sparks that could lead to an uncontrolled fire. They are cool to the touch, making them great for homes with kids and pets. They safely operate near other appliances, including below TVs, which is a common set up.
  • Cost: Electric fireplaces are, by far, the most inexpensive type of fireplace to buy and install. The unit itself averages $1000, but you can find models as low as $200, compared to $1500 to $3500 for a gas fireplace insert. They are also much cheaper to install than gas or wood stoves, which typically run $2,000 to $10,000, because they require no outdoor venting or permitting. They simply plug into an outlet.
  • Improved Air Quality and Health: As discussed above, burning wood and gas creates significant amounts of indoor and outdoor air pollution. 
  • Carbon-Free: Of course, for us, committed to decarbonizing our lives, the number one benefit is the ability to remove natural gas from your home and run a fireplace on clean, emissions-free electricity.

Our Electric Hearth

Our 1987 ranch home didn’t have any kind of fireplace when we bought it in 2012. In 2015 we moved a pellet stove from our former house into an addition we built (we’ll cover the pros and cons of pellet stoves in a future article). In 2020, after hunkering down at home during the peak of the pandemic, we decided to invest in some home hygge and create a hearth to define our main living area, hide an unsightly electrical panel, and provide some storage. This simple, affordable project improved our home’s beauty, functionality, and carbon impact.

After much online research, we went to a local Portland electric fireplace store to check out the electric flames in person. We opted for a Dimplex because of the size (20 by 34 inches), which was the right proportion for our design, and realistic flame. We designed a hearth, mantle, and built-in cabinets and hired a local handy-person to put it all together over a long weekend when we were out of town.

The fireplace unit cost $700 and we spent close to $2500 on labor, lumber, drywall, and minor electrical work to build the hearth. This cost includes the plywood cabinets on either side.

The fireplace wonderfully defines our living room, which previously felt a bit anchorless in our open plan living area. It also provides heat, though we don’t turn on the heating element very often because it’s electric resistance, and our ductless heat pump is on the same wall. It came with unappealing plastic jewel-like rocks that sit on an interior shelf below the flame, and we replaced them with real rocks from the Oregon coast.

Options for Your Electric Hearth

While we went for the built-in model because of our other project goals, there are lots of options for standalone electric fireplaces. Our product selection was based on the dimensions that best fit our design and had the most realistic looking flame. Depending on your goals, and the configuration of your home, you may consider one of the following:

  • Wall mounted can be hung right on your wall, like a piece of art or flat-screen TV.
  • Built-ins fit into a custom structure so they are flush with the wall, like our fireplace.
  • Inserts are well suited for homes with existing wood burning fireplaces and can sit in the existing opening.
  • Standalone models allow you to plug a fireplace into any outlet and create great ambience in any room. A great option for renters.
  • Water Vapor is even an option! These can be filled manually or connected to a water line to create vapor resembling smoke.

While you can find electric fireplaces that cost thousands of dollars (typically the long narrow, built-in variety), all of the models shown here are only a few hundred.

For more on electric fireplaces, check out this fireplace guide from Modern Blaze and this Electrify Now video.

This article is part of a series by Naomi Cole and Joe Wachunas, first published in CleanTechnica. Through “Decarbonize Your Life,” they share their experience, lessons learned, and recommendations for how to reduce household emissions, building a decarbonization roadmap for individuals.

The authors:

Joe Wachunas and Naomi Cole both work professionally to address climate change—Naomi in urban sustainability and energy efficiency and Joe in the electrification of buildings and transportation. A passion for debarbonization, and their commitment to walk the walk, has led them to ductless heat pumps, heat pump water heaters, induction cooking, solar in multiple forms, hang-drying laundry (including cloth diapers), no cars to electric cars and charging without a garage or driveway, a reforestation grant from the US Department of Agriculture, and more. They live in Portland, OR, with two young children.

 

Our team researches products, companies, studies, and techniques to bring you the best of zero building. Zero Energy Project does not independently verify the accuracy of all claims regarding featured products, manufacturers, or linked articles. Additionally, product and brand mentions on Zero Energy Project do not imply endorsement or sponsorship unless specified otherwise.

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Insulation made from mycelium – Springwise
CategoriesSustainable News

Insulation made from mycelium – Springwise

Spotted: Construction and demolition is responsible for more than a third of overall waste in the European Union. But now, British company Biohm is reducing this waste by helping the construction industry shift to a circular model.

The startup’s first product is insulation made from mycelium, the thread-like roots of fungi. The material is not only biodegradable, but outperforms typical foam insulation, having less thermal conductivity. It is also slower to burn than other types of insulation and, importantly, it can be composted at the end of its life and used to grow more insulation.

Biohm grows its mycelium by feeding it agricultural and food waste, making the final product carbon negative. The insulation is grown in the shape of a standard panel, then cured to form a strong and rigid material. This approach completely avoids the use of toxic chemicals and fossil fuels and the panels do not produce harmful dust when cut.

Springwise has spotted mycelium being used to replace other materials, including in fireproof building cladding, packaging, and even clothes.

Written By: Lisa Magloff

Reference

Home insulation made from sheep wool
CategoriesSustainable News

Home insulation made from sheep wool

Spotted: Cooling technologies generated over 1 gigatonne of CO2 emissions in 2022. And at the same time, heating is responsible for over 4 gigatonnes of CO2-equivalent emissions every year. Huge change is needed to reach net zero, and more efficient insulation will play a big part in regulating temperatures inside as climate change makes extreme temperatures more commonplace.

One solution is Thermafleece, which utilises the natural benefits of sheep’s wool to allow homeowners to select a more durable, sustainable, and environmentally friendly insulation.  

Thermafleece is 75 per cent coarse dark wool, a part of sheep’s wool that traditionally goes to waste, and 25 per cent recycled polyester. Because sheep eat plants that have absorbed CO2, wool, itself, also locks up that CO2 from the atmosphere, making Thermafleece’s insulation a form of carbon sequestration.  

Additionally, the compact method by which Thermafleece is transported helps cut down on transport impacts by around 50 per cent, according to the company. The product then expands to normal size when unpacked. Thermafleece also has a house lifetime guarantee which means replacement and repair costs are all alleviated, and the company claims the insulation will pay for itself in saved energy costs in about 4 years. 

Thermafleece is exclusively made in Britain and made with British wool. It is commercially available in various forms such as rolls or slabs, depending on the need of the customer, as well as a separate recycled plastic insulation. 

Springwise has spotted other sustainable and alternative methods of home insulation in the archive, like a construction system made from volcanic glass and cellulose-based insulation made from cardboard.

Written By: Archie Cox

Reference

Sustainable insulation made from recycled mineral waste
CategoriesSustainable News

Sustainable insulation made from recycled mineral waste

Spotted: Insulation is important. In the UK, it’s estimated that 80 per cent of all the houses that will be in use in the year 2050, have already been built – but just 20 per cent will have been built to net zero standard. This means that 26 million UK homes will need to be retrofitted with improved insulation to reduce greenhouse gas emissions. And the situation is similar in other countries. In Switzerland, for instance, more than 1 million houses have no or insufficient insulation.

One of the key challenges when it comes to insulating homes is the trade-off builders need to make when choosing insulating material. Today, those installing insulation must compromise on either environmental impact, cost, or flammability. Now, however, Swiss startup FenX AG claims to have found a way to avoid this compromise.

The startup’s solution is to create insulating foams from abundant mineral waste. Sourcing materials locally from a wide range of industrial waste streams and low-value natural resources, FenX uses its unique foaming technology to create insulating panels, bricks, and customised 3D-printed parts.

The composition of materials used as feedstock for this process meets all the necessary safety requirements for use in the building industry, and the finished foams are recyclable, non-flammable, 3D-printable, and high-performance. What is more, the manufacturing process for the materials results in very low carbon dioxide emissions.

In addition to its core insulation offering, FenX has partnered with ETH Zurich on a project that explores how foam 3D-printing can be used in conjunction with concrete casting to reduce concrete waste.

Springwise has spotted other recent innovations that reduce the environmental impact of buildings. These include building walls that can store carbon, a wood-based cooling foam that improves energy efficiency, and a startup that converts existing buildings to net zero using an innovative process.

Written By: Matthew Hempstead

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