For more than half a century, residents at Carroll Tower in Providence, Rhode Island, made do with electric baseboard heaters in winter and whatever window air conditioning unit they could afford to buy and haul upstairs in summer. Not exactly the picture of modern comfort - especially for a building home to seniors in public housing.
That changed recently, and faster than you might expect. According to Fast Company, the entire 194-apartment building was retrofitted with 277 heat pumps in just 12 days. The units come from Gradient, a San Francisco-based climate tech startup making a name for itself with systems designed specifically for buildings like this one - older, multi-unit, and not exactly built with easy upgrades in mind.
Why this matters beyond one building
On the surface, this is a story about one apartment block in Providence getting a heating and cooling upgrade. But zoom out a little and it becomes something more interesting: proof that large-scale electrification retrofits don't have to be slow, disruptive, years-long ordeals.
Seniors in public housing are among the people most vulnerable to extreme heat and cold. They're also, historically, among the last to benefit from clean energy upgrades - which tend to flow more readily toward newer buildings or wealthier neighborhoods. Carroll Tower flipping that script, and doing it at speed, is the kind of real-world data point that advocates and policymakers have been waiting for.
The heat pump moment
Heat pumps have been having something of a cultural moment lately, moving from niche green-building conversation to mainstream home improvement consideration. They work by moving heat rather than generating it, making them significantly more efficient than traditional electric resistance heating - the same technology those old baseboard heaters rely on.
For residents at Carroll Tower, the practical upshot is a system that handles both heating and cooling, potentially lowering energy bills and improving day-to-day comfort in a building that's nearly as old as the energy crisis that shaped how it was originally designed.
Speed as a selling point
Twelve days for 277 units is the number worth sitting with. Retrofit projects at this scale are often measured in months or years, not days. Whether Carroll Tower becomes a model others look to replicate - in Rhode Island and beyond - may depend on how well the economics and logistics hold up over time. But as a proof of concept, it's hard to argue with the timeline.
For anyone who's ever rolled their eyes at how slowly the clean energy transition seems to move, Carroll Tower is a small but genuine reminder that sometimes it can move pretty quickly after all.
