Carbon-free buildings
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Heat pumps
Bay Area startup introduces flat-rate, single-room heat pumps
Merino Energy says its through-the-wall heat pumps are faster to install than ductless systems. They’ll be available for $3,800 — installation included.By Alison F. Takemura .
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Heat pumps
Did fake comments sink SoCal clean heat rules? Advocates want answers.
Last year, Southern California regulators rejected rules that would have phased down gas heaters after an industry-tied campaign generated 20,000+ critical comments.By Alison F. Takemura .
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Clean industry
Clean cement startup Sublime cuts jobs after Trump pulled funding
Sublime Systems lays off two-thirds of its staff months after pausing work on a planned Massachusetts factory, following the loss of an $87 million federal grant.By Maria Gallucci .
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Heat pumps
Oregon pushes new homes to install heat pumps over ACs
In a state where energy costs have risen sharply, new rules will boost adoption of the clean heating and cooling appliances.By Alison F. Takemura .
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Solar
Balcony solar is taking state legislatures by storm
In more than half of U.S. states, Republican and Democratic lawmakers have introduced legislation that would boost adoption of DIY solar systems.By Alison F. Takemura .
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Heat pumps
Zero Homes nabs $16.8M to go big on easier heat pump installation
The Denver-based startup’s software eliminates the usual in-person home visit to quote a heat pump project, saving customers time and money.By Alison F. Takemura .
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Heat pumps
Heat pump sales dipped in 2025. They still beat gas furnaces.
Yet again, heat pumps were the most-shipped heating appliance in the U.S. And experts say the factors behind last year’s sales slide are temporary.By Alison F. Takemura .
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Heat pumps
How to keep your heat pump humming in the freezing cold
Plenty of heat pumps work well even in subzero temps. But these expert tips will help your heat pump work even better on the coldest days of the year.By Alison F. Takemura .
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Heat pumps
Colorado group looks to boost heat pumps with $200M federal grant
It’s a rare example of a Biden-era climate grant moving forward under Trump — and could grow heat pump adoption across the Denver area.By Alison F. Takemura .
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Heat pumps
Startup Jetson raises $50M to deploy affordable heat pumps
The vertically integrated company says it can install heat pumps at half the costs of competitors. Now, Jetson plans to expand product offerings and service areas.By Alison F. Takemura .
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