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Concentration of CO2 in the Atmosphere

Yellow Heat Keeps Fossil Fuels in the Ground

Yellow Heat’s oil burner does not use fossil fuels to heat your home or business. Image courtesy of Thomas Leue.

George Harvey

Tom Leue, a businessman living in Ashfield, Massachusetts, has invented what he calls “yellow heat.” It can allow conversion of oil-burning boilers to run on recycled vegetable oil, […]

Naturally Cool with Natural Cooling

QuietCool® whole-house system. Photos courtesy of Jeff Kapsalis.

George Harvey

I would think that just about everyone has had the experience of lying in bed, tossing, being unable to sleep because it is too hot. Air conditioning (AC) can help, but it uses a lot of energy. If you live […]

Raising the Bar for Geothermal: How to Get Ultra-High Efficiency

Red Clover Commons in Brattleboro, VT. Courtesy photo.

Matt Desmarais and Jeff Harrison

Housing Vermont, a nonprofit development company, wanted to create fifty-five new, permanently affordable rental-housing units. To keep their costs permanently low, they worked with Blake Group to design and build a next-generation geothermal heating and cooling system for their construction project […]

A Net-Zero Home in Hanover

The Kaiser Gish house in Hanover, NH is retrofitted to achieve net-zero status. It includes three all-climate air-source heat pumps and an 8kW rooftop solar array. Photos courtesy of Karl Kemnitzer.

Karl Kemnitzer

With the recent release of reports from three main climate organizations (UN IPCC, U.S. National Climate Assessment, and World […]

Heat with Wood — Past and Present

Great Kitchen, Rochlitz Castle. Photo: Norbert Kaiser, bit.ly/Wikimedia-Rochlitz-kitchen

George Harvey and N.R. Mallery

We hope no one minds if we ramble down memory lane. The history of heating can be instructive.

One of the holiday season’s many customs is to sing about a Yule log. The songs refer to a way […]

Designing For Wood Heat Training to be held

November 14 at Goddard College

Renewable Energy Vermont, Vermont’s Forest, Parks & Recreation, and Efficiency Vermont invite architects, builders, and facility managers to attend a special workshop training Designing for Wood Heat on Wednesday, November 14th from 8 a.m. to 12:30 p.m. at Goddard College in Plainfield, Vermont.

Participants will learn about […]

Dry Wood Chip Boiler Heats 104-Unit Housing Complex

The new 1.84 million BTU/hr Viessmann Vitoflex 300-RF biomass boiler. Photos courtesy of Froling Energy.

By Jim Van Valkenburgh

Applegate Apartments in Bennington, Vermont is among the largest affordable housing developments in the state. Heat and hot water have always been provided in each unit as part of the rent, which is […]

Past and Future of Ductless Heat Pumps

Looking Back Four Years and Now in 2018, the Record Speaks for Itself.

The Davidsons are very happy with their Mitsubishi Hyper Heat H2i Heat Pumps installations. The heat pump can be seen in the backdrop while John plays croquet. The Davidsons chose the floor model as seen in the back right […]

New Product to Heat or Cool Homes:

Dandelion Air

Most of us know a company called Google, which is a subsidiary of Alphabet. Another Alphabet subsidiary is Dandelion, which arose out of X, Alphabet’s research and development laboratory.

Dandelion launched a new product system, the Dandelion Air, on May 30. The Dandelion Air is a smart, all-in-one home heating and […]

A Fertile Opportunity for Renewable Heating

Older Commercial Building Benefits from Biomass Heat

The original, blackened, American Standard oil boiler with its six-inch stalactite pipe leaks. Photos: Scott Nichols

By Scott Nichols

Sometimes nice old buildings present fertile opportunities for renewable heating makeovers with Froling wood pellet boilers. Here is a great example. The building that became Tarm’s […]