Heat pumps

Geothermal

Boston explores sea- and river-source heat pumps for big buildings

The city is testing the waters with three projects that will use thermal energy in Boston Harbor and the Charles and Mystic rivers for heating and cooling needs.

By Sarah Shemkus . 17 August 2026

A section of dark river with brick buildings to the left and midrise buildings in the center, with a bridge to the right — A view of the Boston skyline from across the Charles River at Paul Revere Park (Page Light Studios via Getty Images)

Heat pumps

World’s oldest cheddar-maker slashes energy bills with novel heat pumps

Innovative tech from U.K.-based Arkaya Energy cools fresh milk and redirects the resulting heat, saving Barber’s Farmhouse Cheesemakers more than $90,000 a year.

By Alison F. Takemura . 10 August 2026
Clean energy manufacturing

US factories are struggling to get cleaner heat. These ideas may help.

Many manufacturers burn fossil fuels to make snacks, materials, and chemicals. High electricity costs are complicating their efforts to switch to cleaner technologies.

By Maria Gallucci . 27 July 2026
Electrification

New Trump rules make it more costly to electrify North Carolina homes

The Department of Energy recently announced new guidance that prevents “fuel switching,” scrambling the state’s first-ever electrification program.

By Elizabeth Ouzts . 9 July 2026
Electrification

How an NYC high-rise is keeping cool with geothermal energy

New York City’s green building laws are pushing developers toward cleaner technologies — even as state policymakers backtrack on climate change targets.

By Maria Gallucci . 1 July 2026
Heat pumps

Heat pumps may soon outsell air conditioners in US

For years, heat pumps have outsold gas furnaces in the U.S. — and now the superefficient appliances are coming for conventional ACs, too.

By Dan McCarthy . 26 June 2026
Heat pumps

Installing a heat pump might increase the value of your home

A new report finds that mentioning all-electric heat pumps in real estate listings delivers a sales premium. But most agents don't note the appliance.

By Alison F. Takemura . 22 June 2026
Heat pumps

Want a deal on a heat pump? Team up with your neighbors.

Bulk buying is a tried-and-true way to get discounts on rooftop solar. Now programs aimed at heat pumps are popping up too, helping people save thousands of dollars.

By Alison F. Takemura . 8 June 2026
Electrification

DOE bars homes from using rebates to ditch fossil-fueled heating

The Trump admin’s new rules block Americans from accessing rebates for electric heat pumps if they previously had oil, natural gas, or propane systems.

By Dan Gearino . 3 June 2026
Heat pumps

Amazon bets on what could be a game-changing heat pump

The tech giant signed a multiyear contract with Transaera, a startup with MIT roots, for next-gen heat pumps that will help reduce energy costs and emissions.

By Alison F. Takemura . 13 May 2026
Heat pumps

New winter rates saved at least $37M for Massachusetts heat-pump owners

Rhode Island and New York are in the early stages of considering similar discounts for households that install the electric, clean-heating technology.

By Sarah Shemkus . 30 April 2026