--- title: Startup Portfolio | Buildings (cooling / heating / envelopes) description: Buildings (cooling / heating / envelopes) | Tackling global billion-dollar markets and hard-to-abate sectors, our climate tech startups are addressing the emissions challenges that will make or break this decisive decade. --- [Skip to content](https://www.third-derivative.org/portfolio/tag/buildings-cooling-heating-envelopes#main-content) [![logo-dark](https://www.third-derivative.org/hubfs/Atomic_Third_Derivative/logos/logo-dark.png)](https://www.third-derivative.org) - [Our Portfolio](https://www.third-derivative.org/portfolio) - [For Entrepreneurs](https://www.third-derivative.org/startups) - [Eligibility & Selection](https://www.third-derivative.org/startups) - [How to Apply](https://www.third-derivative.org/startup-application) - Programs & Opportunities - Innovation Cohorts & Partnerships - [Industrial Innovation Cohorts](https://www.third-derivative.org/industrial-innovation-cohorts) - [Future Industries Partnership](https://www.third-derivative.org/future-industries-partnership) - Impact Archive - [Clean Mobile Power Initiative Cohort](https://www.third-derivative.org/clean-mobile-power-initiative-cohort) - [First Gigaton Captured](https://www.third-derivative.org/first-gigaton-captured) - [Cooling Innovations](https://www.third-derivative.org/global-cooling-innovations) - [Passive Daytime Radiative Cooling](https://www.third-derivative.org/passive-daytime-radiative-cooling) - [Insights & Events](https://www.third-derivative.org/insights) - [About Us](https://www.third-derivative.org/about) - [Our Team](https://www.third-derivative.org/team) - [Careers](https://www.third-derivative.org/careers) - Our Partners - [Corporates](https://www.third-derivative.org/corporates) - [Investors](https://www.third-derivative.org/investors) - [Mentors](https://www.third-derivative.org/mentors) English # Startup Portfolio: Buildings (cooling / heating / envelopes) ## Climate Technology Startups Third Derivative is proud to present the world's most impactful climate tech startups.  ##### STARTUPS BY COHORT: - [Cohort 417](https://www.third-derivative.org/portfolio/tag/cohort-417) - [Cohort 419](https://www.third-derivative.org/portfolio/tag/cohort-419) - [Cohort 22-1](https://www.third-derivative.org/portfolio/tag/cohort-22-1) - [Cohort 22-2](https://www.third-derivative.org/portfolio/tag/cohort-22-2) - [Cohort 22-3 (First Gigaton Captured)](https://www.third-derivative.org/portfolio/tag/cohort-22-3-cdr) - [Cohort 23-1](https://www.third-derivative.org/portfolio/tag/cohort-23-1) - [Cohort 23-2](https://www.third-derivative.org/portfolio/tag/cohort-23-2) - [Cohort 23-3 (First Gigaton Captured)](https://www.third-derivative.org/portfolio/tag/cohort-23-3-FGC-2) - [Cohort 23-4 (Clean Mobile Power Initiative)](https://www.third-derivative.org/portfolio/tag/cohort-23-4-cmpi) - [Cohort 24-1](https://www.third-derivative.org/portfolio/tag/cohort-24-1) - [Cohort 24-2](https://www.third-derivative.org/portfolio/tag/cohort-24-2) - [Cohort 25-1](https://www.third-derivative.org/portfolio/tag/cohort-25-1) - [Cohort 25-2 (Industrial Innovation Cohorts)](https://www.third-derivative.org/portfolio/tag/cohort-25-2) - [Cohort 25-3](https://www.third-derivative.org/portfolio/tag/cohort-25-3) - [Future Industries Partnership](https://www.third-derivative.org/portfolio/tag/future-industries-partnership) - [Cohort 26-1](https://www.third-derivative.org/portfolio/tag/cohort-26-1) ##### Filter by Topic Ag and Land Use agriculture Ammonia Batteries Biofuels / Synfuels / Chemicals Building Construction Building Heat Building Software Buildings Buildings (cooling / heating / envelopes) Buildings (lighting / appliances) Buildings - Enabling Software Carbon & Methane Management Carbon Capture and Utilization Carbon Markets Clean Fuels Cold Chain DAC Electric Mobility Electricity Electricity - Enabling Software Electricity - Financing/Project development Electricity - Geothermal Electricity - Long Duration Electricity Storage Electricity - Nuclear Power Electricity - Retail Energy Storage Electricity - Solar Power Electricity Software Enabling Software Energy Access EV Charging Infrastructure EV Critical Components Financing and Project Development Fugitive Emissions Future Industries Partnership Hydrogen Industrial Heating Industry Industry - Ammonia/Fertilizer Industry - Battery Manufacturing Industry - Biofuels Industry - Cement Industry - Chemicals Industry - E-Fuels Industry - Mining Industry - Steel Industry - Waste Heat Recovery industry- Hydrogen Long-duration Storage Low Carbon Industrial Materials Low Carbon Materials Negative Emissions Negative Emissions - DAC Negative Emissions - Ocean CDR Other Power Electronics and Hardware Renewable & power Generation Renewable Energy Renewable Generation Renewable Process Heat Stationary Energy Storage Thermal Energy Storage Transportation Transportation - Logistics Services Vehicle Efficiency Waste ##### Filter by Cohort Cohort 22-1 Cohort 22-2 Cohort 22-3 (CDR) Cohort 23-1 Cohort 23-2 Cohort 23-3 (FGC 2) Cohort 23-4 CMPI Cohort 24-1 Cohort 24-2 Cohort 25-1 Cohort 25-2 Cohort 25-3 Cohort 25-4 Cohort 26-1 Cohort 417 Cohort 419 [![](https://www.third-derivative.org/hubfs/adept-materials-logo-Artboard%201.png)](https://www.third-derivative.org/portfolio/adept-materials) ## [Adept Materials](https://www.third-derivative.org/portfolio/adept-materials) Regulating moisture in buildings to increase durability and reduce the total carbon footprint, while ensuring a healthy and comfortable environment for occupants. [Read More](https://www.third-derivative.org/portfolio/adept-materials) [![](https://www.third-derivative.org/hubfs/altus-thermal-logo.png)](https://www.third-derivative.org/portfolio/altus) ## [Altus Thermal](https://www.third-derivative.org/portfolio/altus) Electrifying domestic hot water to deliver greater savings, ensure user comfort, and reduce carbon emissions. [Read More](https://www.third-derivative.org/portfolio/altus) [![](https://www.third-derivative.org/hubfs/aris-hydronics.png)](https://www.third-derivative.org/portfolio/aris-hydronics) ## [Aris Hydronics](https://www.third-derivative.org/portfolio/aris-hydronics) Delivering fully integrated heating, cooling, and hot water systems that intelligently adapt to each building’s unique thermal needs. [Read More](https://www.third-derivative.org/portfolio/aris-hydronics) [![](https://www.third-derivative.org/hubfs/bedrock-energy-logo.png)](https://www.third-derivative.org/portfolio/bedrock-energy) ## [Bedrock Energy](https://www.third-derivative.org/portfolio/bedrock-energy) Decarbonizing buildings everywhere with geothermal heating & cooling. [Read More](https://www.third-derivative.org/portfolio/bedrock-energy) [![](https://www.third-derivative.org/hubfs/carbon-signal.png)](https://www.third-derivative.org/portfolio/carbon-signal) ## [Carbon Signal](https://www.third-derivative.org/portfolio/carbon-signal) Accelerating building decarbonization with scalable, high-fidelity energy intelligence that cuts analysis time from months to minutes. [Read More](https://www.third-derivative.org/portfolio/carbon-signal) [![](https://www.third-derivative.org/hubfs/enkoat.png)](https://www.third-derivative.org/portfolio/enkoat) ## [EnKoat](https://www.third-derivative.org/portfolio/enkoat) Transforming building envelopes with adaptive coatings that cut HVAC energy use by up to 30%, extend roof life, and reduce emissions across climates. [Read More](https://www.third-derivative.org/portfolio/enkoat) [![](https://www.third-derivative.org/hubfs/heat-minus-1-logoArtboard%201.png)](https://www.third-derivative.org/portfolio/heat-inverse) ## [Heat Inverse](https://www.third-derivative.org/portfolio/heat-inverse) Providing easily-deployable cooling films to increase efficiency and asset lifetimes across industries at the crux of the energy, food, and water nexus: power, F&B, EVs, buildings, and more. [Read More](https://www.third-derivative.org/portfolio/heat-inverse) [![](https://www.third-derivative.org/hubfs/ionic-logo.png)](https://www.third-derivative.org/portfolio/ionic-liquid) ## [Ionic Liquid](https://www.third-derivative.org/portfolio/ionic-liquid) Replacing HFC refrigerants with proprietary additives that allow practical use of carbon dioxide as a cooling system refrigerant. [Read More](https://www.third-derivative.org/portfolio/ionic-liquid) [![](https://www.third-derivative.org/hubfs/luxwall-logo.png)](https://www.third-derivative.org/portfolio/luxwall) ## [LuxWall](https://www.third-derivative.org/portfolio/luxwall) Moving us closer to cost-effective net zero buildings by reducing building heating and cooling energy draw by up to 40%. [Read More](https://www.third-derivative.org/portfolio/luxwall) [![](https://www.third-derivative.org/hubfs/thermal-solutions-logo.png)](https://www.third-derivative.org/portfolio/m2-thermal-solutions) ## [M2 Thermal Solutions](https://www.third-derivative.org/portfolio/m2-thermal-solutions) Developing refrigerant-free AC systems using novel membranes to remove water vapor. [Read More](https://www.third-derivative.org/portfolio/m2-thermal-solutions) [![](https://www.third-derivative.org/hubfs/magnotherm-logoArtboard%201.png)](https://www.third-derivative.org/portfolio/magnotherm) ## [Magnotherm](https://www.third-derivative.org/portfolio/magnotherm) Eliminating direct global warming potential and increasing energy efficiency with magnetic cooling. [Read More](https://www.third-derivative.org/portfolio/magnotherm) [![MicroEra Power](https://www.third-derivative.org/hubfs/microera-power-logoArtboard%201.png)](https://www.third-derivative.org/portfolio/microera-power) ## [MicroEra Power](https://www.third-derivative.org/portfolio/microera-power) Shifting electrified heating & cooling from peak to off-peak through a patented thermal energy storage solution, thus saving money and enabling a resilient renewable energy transition. [Read More](https://www.third-derivative.org/portfolio/microera-power) [![](https://www.third-derivative.org/hubfs/mimic-logoArtboard%201.png)](https://www.third-derivative.org/portfolio/mimic-systems) ## [MIMiC Systems](https://www.third-derivative.org/portfolio/mimic-systems) Developing a resilient, carbon-friendly, and compact heat pump for personal climate control using solid-state technology. [Read More](https://www.third-derivative.org/portfolio/mimic-systems) [![optimist logo](https://www.third-derivative.org/hubfs/optimist.svg)](https://www.third-derivative.org/portfolio/optimist) ## [Optimist](https://www.third-derivative.org/portfolio/optimist) Scaling low‑emissions cooling globally by delivering modular, energy‑efficient AC systems engineered for affordability and high thermal performance. [Read More](https://www.third-derivative.org/portfolio/optimist) [![Q Gen-Next Sustainable Technology](https://www.third-derivative.org/hubfs/q-gen--logoArtboard%201.png)](https://www.third-derivative.org/portfolio/q-gen-next-sustainable-technology) ## [Q Gen-Next Sustainable Technology](https://www.third-derivative.org/portfolio/q-gen-next-sustainable-technology) Transforming climate control with insulation coatings to deliver year-round comfort while cutting energy use and carbon emissions to power a greener future. [Read More](https://www.third-derivative.org/portfolio/q-gen-next-sustainable-technology) [![](https://www.third-derivative.org/hubfs/rebound-technologies-logo.png)](https://www.third-derivative.org/portfolio/rebound-technologies) ## [Rebound Technologies](https://www.third-derivative.org/portfolio/rebound-technologies) Developing an innovative freeze point suppression refrigeration cycle to increase throughput and operational efficiency to frozen food processors and cold storage and distribution facilities. [Read More](https://www.third-derivative.org/portfolio/rebound-technologies) [![](https://www.third-derivative.org/hubfs/scanalytics-logo.png)](https://www.third-derivative.org/portfolio/scanalytics) ## [Scanalytics](https://www.third-derivative.org/portfolio/scanalytics) Using active energy-reducing surface sensors to lower building emissions. [Read More](https://www.third-derivative.org/portfolio/scanalytics) [![](https://www.third-derivative.org/hubfs/transaera-logo.png)](https://www.third-derivative.org/portfolio/transaera) ## [Transaera](https://www.third-derivative.org/portfolio/transaera) Developing a new class of affordable, energy-efficient, sustainable cooling systems. [Read More](https://www.third-derivative.org/portfolio/transaera) [![](https://www.third-derivative.org/hubfs/v-glass-logo.png)](https://www.third-derivative.org/portfolio/v-glass) ## [V-Glass](https://www.third-derivative.org/portfolio/v-glass) Developing next generation vacuum insulated glass (“VIG”) technology for the production of affordable, ultra-high energy-efficient windows. [Read More](https://www.third-derivative.org/portfolio/v-glass) APPLY TODAY: ### Accelerate your success and speed to market with us We’re here to help you bridge critical finance and resource gaps by uniting and aligning the world’s most promising climate tech startups—like you—with D3’s network of committed investors, corporate partners, market experts, and mentors. [![Apply to Third Derivative](https://no-cache.hubspot.com/cta/default/7483280/19b13734-9935-421a-8626-687427fe800f.png)](https://cta-redirect.hubspot.com/cta/redirect/7483280/19b13734-9935-421a-8626-687427fe800f) ![logo-white](https://www.third-derivative.org/hs-fs/hubfs/Atomic_Third_Derivative/logos/logo-white.png?width=300&name=logo-white.png) Founded by [RMI](https://rmi.org/) and [New Energy Nexus](https://www.newenergynexus.com/), Third Derivative (D3) is accelerating the rate of climate innovation through our inclusive ecosystem approach, which rapidly finds, funds, and scales climate tech globally. #### Connect with us: #### About - [Story](https://www.third-derivative.org/about#story) - [Team](https://www.third-derivative.org/team) - [Careers](https://www.third-derivative.org/careers) #### Insights & Events - [Research & Insights](https://www.third-derivative.org/insights) #### Contact - [Contact Us](https://www.third-derivative.org/contact) - [Media](https://www.third-derivative.org/press) #### For Entrepreneurs - [How to Apply](https://www.third-derivative.org/startup-application) - [Eligibility & Selection](https://www.third-derivative.org/startups) #### Partners - [Investors](https://www.third-derivative.org/investors) - [Corporates](https://www.third-derivative.org/corporates) - [Mentors](https://www.third-derivative.org/mentors) - [Refer a Startup](https://www.third-derivative.org/startup-referral) #### SIGN UP FOR THE MONTHLY D3 NEWSLETTER [Sign Up](https://rmi.tfaforms.net/100) Copyright 2026. Third Derivative. All Rights Reserved. - [Privacy Policy](https://www.third-derivative.org/privacy-policy)