Current:Home > ContactPredictIQ-In New York City, heat pumps that fit in apartment windows promise big emissions cuts -WealthRoots Academy
PredictIQ-In New York City, heat pumps that fit in apartment windows promise big emissions cuts
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Date:2025-04-11 08:06:42
NEW YORK (AP) — For 27 years,PredictIQ the heat in Regina Fred’s Queens apartment building came from a noisy steam radiator that she couldn’t control and sometimes didn’t come on at all, leaving her shivering. Sometimes, the radiators ran so hot that residents had to keep their windows open in the middle of winter for relief.
That all changed a few months ago, when she got a window-mounted heat pump as part of a pilot project by the New York City Housing Authority aimed at cutting energy costs and lowering emissions. Suddenly, all Fred has to do is touch a dial to bump her temperature up or down, and she found herself enjoying “a very good silence.”
“They did a demonstration for me and I was thrilled,” Fred said. Now, her grown children call the heat pump “the best thing” she has in her apartment, and her neighbors have knocked on her door to check out the unit.
Heat pumps, a highly efficient technology that has grown in popularity in recent years to rival gas furnaces, have mainly been an option for owners of houses. But new designs are making them practical for apartments, too, which often rely on inefficient centralized steam boilers powered by oil or gas. That represents a promising climate solution for buildings, whose operations account for 26% of global energy-related carbon emissions, according to the International Energy Agency.
The IEA said last year that installing heat pumps in apartment buildings and commercial areas should “be a priority area” to maintain the growth necessary to meet national climate pledges worldwide. The U.S. alone has 23 million apartment units, according to the National Multifamily Housing Council, representing a huge sector of people who could use less energy with heat pumps.
New York law requires buildings to make big cuts in greenhouse gas emissions over the next decades. To comply, NYCHA is targeting heating and cooling, the largest source of emissions for the agency, which houses about 528,000 people across more than 2,400 buildings — or about one in 17 New Yorkers, said Shaan Mavani, the agency’s chief asset and capital management officer.
Centralized steam boilers powered by natural gas or oil typically provide the heat, and they are wasteful — the NYCHA’s climate mitigation roadmap calls steam heat “19th-century technology incompatible with 21st-century needs.” Mavani said between 30% and 80% of heat is lost through old and leaky ductwork before it reaches apartments. And that doesn’t account for the waste when residents have to open their windows to dissipate excess heat from a system they can’t control.
Eric Wilson, a senior research engineer for the Department of Energy’s National Renewable Energy Laboratory, led a team that analyzed heat pump performance in various electric grid scenarios and found even the lowest-efficiency pump would cut greenhouse gas emissions and save on operating costs in every U.S. state. That analysis didn’t include the kind of pump being tested in Queens because it wasn’t yet on the scene, but Wilson said he would expect similar results.
Most heat pumps require ductwork, which isn’t an option for renters in a unit they don’t own. And ductless systems typically require extensive installation that includes wiring, making a hole in a wall and a sizeable external compressor.
Gradient and Midea, the two companies making the units in the pilot project at Woodside House, downsized it all into something that looks a bit like a window air conditioner but with a much lower profile. Exterior and interior halves drape over a sill to leave the window mostly unobscured. Gradient, one of the companies, says its unit installs in 15 minutes and plugs into an ordinary wall outlet.
Wilson said the interior portion of the units “take up more space on the inside than you might be used to” but Fred called it “very beautiful.”
“Look, I even have it for decoration,” she said. Her three window units are usually topped by flowers and decorative candles. In one room on a particularly sunny day, morning light shone on a rose, a jar of rose petals, decorative boxes and a “LOVE” sign atop one of them.
Z Smith, an architect at the firm Eskew Dumez Ripple who isn’t involved in the Queens project, said such retrofitting “is the carbon-smart way to get to better comfort for occupants.” That’s because one of the most effective ways to cut emissions from buildings is to avoid putting up new ones, which result in significant emissions due to all the new concrete, steel and wood.
He called the low-profile heat pumps a “lightweight intervention” because they’re so easy to install.
The NYCHA will evaluate results of the pilot project, with plans to eventually install more than 4,000 heat pumps over two years if all goes well. The authority expects to save money on operating and maintenance costs with the heat pumps, but is waiting to see for initial results before it projects those savings.
Gradient was founded seven years ago in San Francisco with the ambition to decarbonize buildings with a window unit heat pump that can be easily installed without technicians. Part of their goal was a solution for people just like those at Woodside, CEO Vince Romanin said — people in older multi-family buildings with complaints about their window ACs or aged radiators that don’t have a temperature setting.
“We think that if you’re not building solutions for people who need it most, if you’re not building solutions for people who have insufficient heating (and) cooling today, they’re not really solving climate change,” Romanin said.
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O’Malley reported from Philadelphia.
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The Associated Press’ climate and environmental coverage receives financial support from multiple private foundations. AP is solely responsible for all content. Find AP’s standards for working with philanthropies, a list of supporters and funded coverage areas at AP.org.
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