85 indexable Air Management Services companies headquartered in California, United States, ranked by total equity funding and recent funding momentum. Combined disclosed equity funding of $171.9M across 15 funded companies.
| # | Company | Funding | Valuation | Stage | Latest round | Employees | Founded | Momentum |
|---|---|---|---|---|---|---|---|---|
| 1 |
Brechtel
Developer of aerosol measurement devices and software for climate and air |
$11.2M | — | Funding Raised | Grant (prize money) Dec 2025 | — | 1983 | ↑ Active |
| 2 |
Bitzero
Provider of sustainable, high-performance computing data center services. It offers data center infrastructure specifically designed for blockchain mining and high-performance computing applications. The company utilizes renewable energy sources and incorporates heat capture technology to minimize environmental impact. Its services are tailored to meet the precise requirements of organizations involved in model training and high-performance computing. A focus on sustainable practices and collaboration with local communities is central to its operations. |
$25M | — | Public | Series B Jul 2025 | — | — | ↑ Active |
| 3 |
Algenesis
Provider of air management services |
$11.2M | — | Seed | Seed Oct 2024 | 19 | 2016 | ↑ Active |
| 4 |
Prabhu Energy Labs
Provider of methane emissions reduction services |
$1M | — | Funding Raised | Grant (prize money) May 2025 | — | 2019 | ↑ Active |
| 5 |
SIG
Provider of environment mapping, carbon offsets, and ecosystem services |
$1.3M | — | Funding Raised | Grant (prize money) Sep 2024 | 38 | 1998 | ↑ Active |
| 6 |
Sensible Weather
Provider of weather guarantees for travel and outdoor experiences. It offers proactive reimbursements to customers if inclement weather disrupts their pre-booked trips or activities. The service integrates directly with various travel and hospitality partners, allowing customers to add a weather guarantee during the booking process. Reimbursements are automated based on weather forecasts, eliminating the need for claims processes. The company covers a range of experiences, including hotels, resorts, camping, golf, skiing, and live events. |
$20M | — | Series A | Series A Sep 2023 | 41 | 2019 | — |
| 7 |
ClimatePlan
Network of organizations advancing land-use and transportation policies to address climate change and promote equitable development. It works to improve planning processes, advocating for policies that protect public health, increase social equity, and preserve natural areas. The network builds partnerships among diverse stakeholders to achieve pragmatic policy solutions and foster long-lasting community engagement in planning initiatives. Efforts focus on reducing greenhouse gas emissions, improving transportation access, and ensuring that vulnerable communities have a voice in decision-making. |
$18.8M | — | Series B | Series B Aug 2023 | — | 2007 | — |
| 8 |
Partanna
Manufacturer of carbon-negative concrete building materials. It offers a range of products for construction, desalination, and coral reef development. The materials are designed to be stronger and potentially cheaper than traditional concrete. The company also generates carbon credits through its production processes. Its technology is used in various projects, including residential and commercial applications. The company supports its mission through partnerships and investments. |
$9.3M | — | Seed | Seed May 2023 | 20 | 2020 | — |
| 9 |
Picarro App
Provider of gas concentration and isotope analyzers using cavity ring-down spectroscopy |
$56.5M | — | Series D | Series D Jul 2012 | 187 | 1997 | — |
| 10 |
Earth Force
Provider of environmental management services |
$8.6M | — | Seed | Seed Nov 2022 | 15 | 2022 | — |
| 11 |
CarbonBridge
Provider of carbon capture services |
$270K | — | Seed | Seed Dec 2023 | 4 | 2021 | — |
| 12 |
The Ozone Man
Provider of air management services |
$6.1M | — | Series A | Series A Mar 2009 | — | 2007 | — |
| 13 |
Global Warming Solutions
Developer of technologies to mitigate global warming |
$1.2M | — | Public | Post IPO Mar 2021 | 1 | 1999 | — |
| 14 |
METAseismic
Manufacturer of seismic metamaterials |
$1.1M | — | Funding Raised | Grant (prize money) Aug 2019 | — | 2016 | — |
| 15 |
As You Sow
Provider of shareholder advocacy services promoting corporate social responsibility. It uses shareholder power to influence corporate behavior on environmental and social issues. The organization engages directly with corporate leadership and investors to encourage the adoption of sustainable business practices. This includes addressing concerns related to environmental health, social justice, and equitable workplace practices. Its methods involve shareholder resolutions, coalition building, and strategic legal action to achieve lasting positive change within corporations. |
$125K | — | Early Stage | Unattributed Jun 2022 | 35 | 1992 | — |
| 16 |
Streamline
Provider of climate startup services |
— | — | Seed | Seed 2023 | — | 2023 | — |
| 17 |
Pacific Environment
Provider of environmental advocacy and policy change services. This organization works to protect the environment through grassroots movements, policy influence, and community engagement. Their focus areas include climate change mitigation, pollution reduction, and biodiversity conservation. They collaborate with local communities and international partners to achieve environmental justice and sustainable practices. The organization leverages scientific evidence and traditional knowledge to inform its advocacy efforts and catalyze impactful change. Their work aims to create a healthy and equitable future for people and the planet. |
— | — | Funding Raised | Grant (prize money) Sep 2009 | 72 | — | — |
| 18 |
#climate
Provider of climate change services |
— | — | Unfunded | — | — | 2014 | — |
| 19 |
Ace Excavating and Environmental Services
Provider of excavating and environmental services for residential and commercial projects. This includes grading, slope repair, and underground utility work. They handle projects of all sizes, from small backyard jobs to large-scale construction. The company focuses on providing reliable and efficient service to its clients. |
— | — | Unfunded | — | 12 | 2006 | — |
| 20 |
advanced filtration concept
Advanced Filtration Concept specializes in site survey, filter testing and turnkey installation solutions to hospitals and industries. |
— | — | Acquired | — | 11 | 1997 | — |
| 21 |
Advanced Technology Laboratories
Provider of environmental testing services for air, water, and soil. This entity utilizes EPA, APHA, and ASTM methods to analyze samples for priority pollutants and emerging contaminants. Services include expedited turnaround times and customized electronic data deliverables. Accreditations are held through various state and national programs. Soil permits are also available. |
— | — | Acquired | — | 46 | 1992 | — |
| 22 |
Aethra
Provider of carbon removal services |
— | — | Unfunded | — | — | 2021 | — |
| 23 |
Air Filter Supply
Provider of air filtration systems and services. This company offers a variety of filters, including pre-filters, final filters, HEPA filters, and belts, along with housings. They also provide installation, delivery, and online management services for filtration systems. A cloud-based management system allows clients to track and manage their filtration needs, schedule deliveries, and review budgets. The company assists clients in understanding air filtration standards and works with various agencies to ensure compliance. They offer support for maintaining the product lifecycle and help clients understand indoor air quality. |
— | — | Unfunded | — | 53 | 2004 | — |
| 24 |
Air Monitor
Provider of airflow management solutions for commercial applications |
— | — | Acquired | — | 42 | 1967 | — |
| 25 |
Alternate Future
Provider of carbon removal services |
— | — | Unfunded | — | — | 2020 | — |
| 26 |
American Air Testing
Provider of air testing, sewage clearance, litigation support, and other services |
— | — | Unfunded | — | — | 2001 | — |
| 27 |
Aplusenvironmentalrestoration
Provider of environmental restoration and utility construction services. This includes civil construction, utility-scale solar operations and maintenance, hydro excavation, maintenance of traffic, and LED lighting installation and maintenance. They also offer services in exotic/invasive plant removal and native plant installation, integrated vegetation management, and stormwater management. The company performs site work, including silt fence installation, concrete work, and access matting. They also handle underground facility installation and trenching. |
— | — | Unfunded | — | 69 | 2015 | — |
| 28 |
Area West Environmental
Provider of environmental science, planning, and consulting services. This firm offers environmental assessment, planning, permitting, mitigation, monitoring, and regulatory compliance management services to public and private sector clients. They develop pragmatic, technically sound solutions to challenging physical and regulatory issues, balancing environmental protection with client needs. The firm collaborates with clients to achieve cost-effective, resource-driven outcomes. |
— | — | Unfunded | — | 10 | 2000 | — |
| 29 |
Aspen Environmental Group
Provider of environmental compliance, planning, and engineering services for energy, natural resource, and infrastructure projects. It offers analysis, advice, and services to both agencies and project proponents. Services are essential throughout a project's lifecycle, from planning through construction and beyond. The firm supports sustainable resource use and a safe environment. Its work includes environmental document preparation, biological surveys, and monitoring for construction projects. |
— | — | Unfunded | — | 93 | 1997 | — |
| 30 |
Associates Environmental
Provider of environmental consulting services for permits and plans. This company assists clients in obtaining necessary environmental permits and developing environmental plans. The services aim to alleviate the burden of environmental compliance, allowing clients to focus on their core business operations. They offer expertise in air quality, land use, and water quality assessments. |
— | — | Unfunded | — | 13 | 2009 | — |
| 31 |
auraia
AURAIA is an innovative solution delivering the highest resolution air quality & health effects worldwide. |
— | — | Private | — | 2 | 2013 | — |
| 32 |
BIOFRIENDLY
Provider of fuel additives and environmental solutions. It develops and supplies fuel additives designed to reduce greenhouse gas emissions. The company also offers educational resources and information on environmentally friendly practices through its online magazine. Its focus is on creating accessible and easy-to-implement solutions for environmental improvement. |
— | — | Unfunded | — | 5 | 2000 | — |
| 33 |
BrightAction
Provider of a climate action engagement platform for employee teams. This platform facilitates employee learning about climate solutions, provides resources, and enables collective action. It includes dashboards for tracking progress and offers tools for employers to manage engagement campaigns and reduce Scope 3 emissions. The platform focuses on practical actions accessible to all employees, promoting community building and shared goals. It aims to empower employees to contribute to climate action while benefiting from cost savings and improved well-being. |
— | — | Unfunded | — | 6 | 2015 | — |
| 34 |
c-quester
C-Quester is a carbon capture company that intends to provide environmental services. |
— | — | Private | — | 3 | 2022 | — |
| 35 |
California Fueling
Offers emission reduction services |
— | — | Unfunded | — | — | 2017 | — |
| 36 |
carbonplan
Provider of multiple carbon removal procurement programs |
— | — | Funding Raised | — | 12 | 2020 | — |
| 37 |
Charge Across Town
Charge Across Town – We’re leading the charge |
— | — | Unfunded | — | — | — | — |
| 38 |
Chemetry
Provider of electrochemical and catalytic services for chemical industries |
— | — | Funding Raised | — | 15 | 2016 | — |
| 39 |
cisco air systems
Cisco Air Systems specializes in the distribution of air compressors, vacuum pumps, nitrogen generators with parts and maintenance. |
— | — | Acquired | — | 44 | 1973 | — |
| 40 |
Climate Action Now
Fight Climate Change - Download the Climate Action Now App |
— | — | Unfunded | — | 13 | 2020 | — |
| 41 |
Climate Resolve
Provider of climate pollution consulting services |
— | — | Unfunded | — | 10 | 2010 | — |
| 42 |
ClimUp
Provider of climate risk data services |
— | — | Funding Raised | — | 3 | 2022 | — |
| 43 |
CO2Zero
Provider of carbon management services |
— | — | Deadpooled | — | — | 2020 | — |
| 44 |
Cool Effect
Provider of carbon emission removal services |
— | — | Unfunded | — | — | 2015 | — |
| 45 |
CROPS
Provider of carbon removal & sequestration services |
— | — | Unfunded | — | — | 2021 | — |
| 46 |
Davenport Engineering
Provider of environmental compliance and emissions reporting services. It offers services including emissions inventory preparation, environmental compliance reporting, permitting, health risk assessments, air quality modeling, auditing, regulatory program development, and strategic planning. The firm assists clients across various industries in navigating complex regulatory frameworks, focusing on air quality, compliance, and reporting projects. Expertise includes air emissions inventory, health risk assessment, air permitting, climate change analysis, hazardous waste management, wastewater and stormwater management, and chemical and material management. The services aim to help clients maintain environmental compliance and manage the complexities of routine and unexpected reporting needs. |
— | — | Unfunded | — | 30 | 1999 | — |
| 47 |
Dissigno
Provider of climate change consulting & project development services |
— | — | Unfunded | — | — | 2004 | — |
| 48 |
E2 ManageTech
Provider of environmental management and engineering consulting services |
— | — | Acquired | — | 55 | 2008 | — |
| 49 |
EarthGuard
Provider of storm-water and erosion control products and services |
— | — | Unfunded | — | — | 2001 | — |
| 50 |
Ecotek
Provider of software development and air quality management services |
— | — | Unfunded | — | 37 | 1995 | — |
Developer of aerosol measurement devices and software for climate and air. The company designs tools for unmanned aerial vehicle sampling of aerosol properties. It offers automated gas chromatographic vapor injection and aerosol measurement tools. These tools characterize key properties of aerosols that impact both human health and climate.
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Provider of air management services
Provider of methane emissions reduction services
Provider of environment mapping, carbon offsets, and ecosystem services
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Provider of gas concentration and isotope analyzers using cavity ring-down spectroscopy. The company offers solutions for environmental monitoring, emissions reduction, and industrial process control. Its analyzers deliver precise, real-time measurements of greenhouse gases and volatile organic compounds. These instruments support applications such as leak detection, regulatory compliance, and scientific research. Th
Provider of environmental management services
Operator of a climate-action company intended to remove carbon dioxide and methane. The company converts waste greenhouse gases into carbon-negative feedstock for polymers, e-fuels, and more, enabling compatible farms and energy and chemical companies to generate credits that one can use to offset their footprint with Green hydrogen and carbon dioxide.
Provider of air management services
National Science Foundation
America’s Seed Fund
OSTI
Climate Capital
75 & Sunny
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ARPA-E
ARV
AlleyCorp
Amex Ventures
Antler
Benchmark
Bold Capital Partners
Rankings are computed by Radar (Fliar BI) from the Radar company master and are updated periodically. Funding and momentum scores use disclosed equity-funding data only. Figures may lag private rounds. Last updated 2026-06-22.
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