Boldr

Boldr provides smart home climate products—including the Kelvin infrared heater and Klima smart thermostat—that help homeowners reduce energy consumption and lower utility bills. The company's connected devices and mobile app enable real-time cost monitoring, smart scheduling, and remote control, while also aggregating distributed HVAC capacity to support grid stability. Boldr distributes its products through HVAC contractors, with its technology already deployed in more than 15,000 homes across North America.

Traction 10/10

London, United Kingdom · HQ

Founded 202286850K+ followers

Artificial Intelligence
Clean Technology
Consumer Electronics
Energy
Hardware
Internet of Things
Software Only
Utilities

Updated 2 months ago

Funding

Raised to date

$8.2MRaised to date based on public sources. This may differ from the amount the company actually raised and is based only on what is publicly available on the internet.

across 2 rounds

$5M · Series A

Announced Aug 2026 · from article date

Disclosed cumulative: $8.2M

2/2

RoundDateAmountValuationInvestors

Founders

1 founder

David Sudolsky

CEO

Product

Problem

The U.S. power grid faces surging demand from electrification, electric vehicles, and data centers, while renewable generation often peaks at times that don't match consumption. This mismatch strains grid operators and threatens reliability, with outages potentially doubling by 2030 without new flexible capacity solutions.

Solution

Boldr builds smart hardware and software for home HVAC systems that turn individual residences into distributed energy resources. Its products—the Kelvin smart infrared heater and Klima smart thermostat—let homeowners optimize energy usage, shift demand away from peak periods, and supply capacity back to the grid when needed. The company's mobile app provides real-time cost monitoring, smart scheduling, location sensing, and remote access, while a cloud platform aggregates energy data across homes. Boldr distributes through HVAC contractors, creating a scalable channel to rapidly deploy flexible capacity at a fraction of the cost of traditional grid infrastructure projects.

Target Audience

Primary customers are homeowners seeking to reduce energy bills and improve home comfort, as well as HVAC contractors who install and distribute Boldr products to their residential clients.

Features

Kelvin smart infrared heater uses infrared technology that is 30% more cost-effective than traditional convection heating, reduces dust circulation, and operates silently
Klima smart thermostat provides app and physical control with temperature display and premium materials for AC systems
Mobile app features real-time energy consumption monitoring, accurate monthly bill predictions, room-by-room smart scheduling, and location-based auto on/off
Zonal control allows independent temperature management per room, with multi-user access and temperature lock (guardian mode) for safety
Multi-property management enables control of climate across multiple homes from a single interface
Voice control integration with Alexa and Google Assistant, plus compatibility with Apple Home, Home Assistant, and SmartThings
Cloud platform aggregates distributed HVAC capacity to provide peak capacity back to the grid, with goal of managing 4 gigawatts across 1 million homes