Boldr Raises $5M to Turn HVAC Contractors Into the Front Line of Grid Capacity

Boldr, a London based energy management startup, has raised 4.2 million euros, roughly 5 million dollars, in a pre‑Series A funding round to expand its smart climate technology across North America and deepen its software platform for HVAC contractors.

The round was led by Unconventional Ventures, with participation from Ada Ventures, Tetrad Ventures, Davidovs Venture Collective, Roxbury Asset Management, the Inclimo Climate Tech Fund, Prosegur, Techstars, the S20 Fund, and PropelX. The raise follows an oversubscribed 3.2 million dollar seed round Boldr closed in September 2025, itself building on a 980,000 pound round in late 2023, marking a rapid succession of funding as the company has scaled its footprint across Europe and North America.

Boldr was founded in 2022 by chief executive Madi Ablyazov alongside co‑founders Toma Paro and Matheus Marotzke, and is backed by industry figures including the former head of manufacturing at Tesla and the former head of engineering at SpaceX. The company's core product connects HVAC equipment inside homes and other buildings into a single energy management platform, initially focused on controlling mini‑split, window, and room air conditioners alongside smart thermostats and radiant heaters, all managed through a smartphone app that works across different equipment brands rather than locking customers into a single manufacturer's ecosystem.

The strategic bet underlying Boldr's approach is that the next major source of flexible power capacity for the grid will not come from building new power plants, but from aggregating millions of existing home energy devices that can be coordinated to reduce demand or shift usage during periods of peak strain. Ablyazov has described the company's mission in exactly those terms: the next power plant will not be one building, but millions of homes working together, though he has been equally direct that reaching that outcome requires more than a consumer‑facing app alone.

That distinction shapes Boldr's go‑to‑market strategy in a way that sets it apart from many home energy startups. Rather than trying to reach homeowners directly through consumer marketing, Boldr has built its growth around HVAC contractors and wholesalers, treating them as the critical distribution partner for turning individual homes into coordinated grid assets. Unconventional Ventures partner Alexis Horowitz‑Burdick pointed to that decision as central to the firm's investment thesis. "Boldr is attacking one of the most important infrastructure challenges of the next decade: how to add flexible capacity to the grid quickly, affordably and at massive scale," Horowitz‑Burdick said. "The team has identified HVAC contractors as a critical partner in the electrification of the home. By building technology that helps contractors serve customers better while creating a path to distributed grid capacity, Boldr is positioned to become a defining company in residential energy management."

The urgency behind that strategy is tied directly to mounting pressure on power grids, particularly in the United States, where demand is rising simultaneously from the electrification of home heating and cooling, growing electric vehicle adoption, and the rapid buildout of AI and data center infrastructure. By tapping into everyday energy devices starting with HVAC, Boldr aims to provide peak capacity back to grid operators during periods of highest strain, while simultaneously helping individual households lower their own energy bills through smarter usage optimization, positioning the company's technology as a win for both sides of the grid relationship rather than a tradeoff between them.

Boldr has already shipped more than 6,000 units across Europe and North America and has previously described itself as already profitable on the strength of selling both physical hardware and software, a combination FP Solutions VC partner Lewis Hong once described as making Boldr comparable to "the Apple of home energy," pointing to the stickiness created by hardware and software sold together as a single integrated product.

With the new capital, Boldr plans to expand its US HVAC market presence, build out its contractor‑facing software platform further, and extend its technology into a broader range of residential and commercial heating and cooling systems beyond its original focus. According to TechFundingNews, the company intends to raise a further 20 million to 50 million dollars in a subsequent Series A round, suggesting this pre‑Series A raise is intended as a bridge to accelerate US traction ahead of a considerably larger institutional round. Boldr's domestic comparator, Axle Energy, is pursuing a similar thesis around residential grid flexibility, and with at least 156 million euros in comparable climate and energy funding having closed across Europe this year alone, Boldr's bet is that winning over the HVAC contractor channel first, rather than consumers directly, gives it a faster and more durable path to the scale needed to matter to grid operators.