Gradient
We make home heaters & air conditioners that are better for the planet, easier to install, and more pleasant to use.
59 employees · est. 2017 · San Francisco, United States
Triple Solar
Triple Solar®: PVT-heatpump panels as source for the PVT-heatpump. Heating, cooling & Electricity!
44 employees · est. 2009 · Amsterdam, The Netherlands
Triple Solar is the older company (2017 vs 2009); Gradient is the larger of the two.
Side-by-Side Comparison
| Metric | Gradient | Triple Solar |
|---|---|---|
| Founded | ||
| Founded | 2017 | 2009 older |
| Headquarters | ||
| Headquarters | San Francisco, United States | Amsterdam, The Netherlands |
| Employees | ||
| Employees | 59 larger | 44 |
| Industry | ||
| Industry | Consumer Electronics, Clean Energy | Energy, Manufacturing, Renewable Energy |
| Funding Stage | ||
| Funding Stage | Convertible Note | Series Unknown |
| Total Funding | ||
| Total Funding | $48.50M | $11.20M |
| Funding Rounds | ||
| Funding Rounds | 8 | 2 |
| Services | ||
| Services | Easy-to-install window heat pumps, Mobile app controlled HVAC solutions, Energy-efficient heating and cooling | Not tracked yet |
| Target Customers | ||
| Target Customers | Building Owners, Higher Education Institutions, Utilities | Not tracked yet |
| Taxonomy | ||
| Taxonomy | Heat Pump Technology, Sustainable Home Comfort, Climate-Friendly HVAC, Low Carbon Emissions, R-32 Refrigerant, Energy Efficiency, Direct-to-Consumer, Window Heat Pump, Easy Installation, Decarbonization, Multifamily Buildings, Public Housing Solutions, Climate Change Adaptation, Building Health And Productivity, Innovative Home Upgrades | Sustainable Living, PVT Heat Pump, Solar Panels, Energy Efficiency, Eco-Friendly Heating, CO2 Emissions Reduction, Green Technology, Energy Sustainability, Recyclable Products, Environmentally Friendly, Gas-Free Heating, Heat Pump Panels, Smart Energy Solutions, Affordable Energy |
| Website | ||
| Website | gradientcomfort.com | triplesolar.eu |
About Gradient
Gradient, founded in 2017, is at the forefront of the Consumer Electronics and Clean Energy sectors, revolutionizing home climate control through eco-friendly technology. The company's slogan, "We make home heaters & air conditioners that are better for the planet, easier to install, and more pleasa...
About Triple Solar
Triple Solar, founded in 2009, is the inventor of the PVT heat pump and associated PVT heat pump panels. The company aims to make energy-sustainable homes accessible to a wide audience and reduce CO2 emissions in heating. With a focus on sustainable energy solutions, Triple Solar is committed to env...
We will tell you when either one moves
BounceWatch watches Gradient and Triple Solar for new funding, fast hiring, new executives and a change of software vendor. When one happens, we email you the same day.
Funding, hiring, leadership and stack changes at Gradient and Triple Solar — by email.
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Compiled from the BounceWatch company index. We last looked at Gradient on 4 Feb 2026, and Triple Solar on 12 Sep 2024. Where a field is blank here, it means we have not recorded it — not that the answer is zero. How we source and date this.