Dandelion Energy eyes mainstream geothermal

Dandelion Energy, a nationwide geothermal HVAC installer, last year inked a partnership with Lennar to equip more than 1,500 new Colorado homes with its systems over the next two years — one of the largest residential geothermal deployments in U.S. history. 

• “We’re doing a couple multifamily projects in Vermont right now with another big builder, and we have some other big production home builders, both in Colorado and Maryland, that are underway as well,” Wyatt Roberts, Dandelion’s SVP of New Construction, told Homepros.

The big picture: The company has touted its Lennar partnership as establishing a “framework for making geothermal heating and cooling the standard in new home construction,” and is aiming to reach 10,000 homes a year, Roberts said. 

Catch up quick: Founded in 2017 by Google alum Kathy Hannun, Dandelion designs and drills ground loops and coordinates with HVAC contractors to install indoor equipment. 

• The company first focused on retrofitting single-family homes, swapping furnaces and boilers with its systems, but in 2025 largely pivoted to new construction.

Go deeper: By leveraging state incentive programs at scale, homebuilders can install geothermal systems for roughly the same cost as mid-level, conventional HVAC systems, according to Roberts. “And that’s really the big unlock, because production homebuilders are all bottom-line driven,” he said. 

• While retrofitting an existing home with a geothermal system could cost $40,000, a new-build install costs between $15,000 and $25,000, with incentives potentially offsetting that further. The home will also see $500 to $1,000 in operational savings annually, Roberts explained. 

State of play: In one Colorado Lennar community, he noted, townhome geothermal systems “are about $15,000 top line, but their out-of-pocket on those is more like 3,500 bucks because of the incentives.”

• Meanwhile, though the Trump administration has nixed several energy incentives, the president’s big, beautiful bill preserved commercial tax credits for geothermal heat pumps and authorized system leasing for the first time, enabling Dandelion to offer a lower-upfront-cost model to builders in 16 states. 

Of note: Dandelion tapped Enertech to manufacture heat pumps for the Lennar deployment, and its contractor partners — selected by builders — own the ongoing service relationship with customers. 

• Roberts noted that repairs are standard and that issues can be easily isolated to either the ground loop or indoor equipment. 
• “Our heat pumps are equipped with remote monitoring so we can actually log in and see what’s going on, and we can measure: What’s the ground loop temperature? What’s the ground loop flow rate?” he said. 
• “And those are the two variables that you have to monitor and see if they’re outside of parameters or not… If it’s a ground loop issue, then we roll a truck and take care of it,” he added.

What we’re watching: Roughly one percent of U.S. homes use geothermal heat pump systems, but according to the Department of Energy, widespread adoption could eliminate the need for 24,500 miles of new grid transmission lines, resulting in annual grid savings of $4 billion.