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Private foundations don’t post open calls, so nobody can search them. We read IRS filings instead — 9.6 million grants from 174,053 foundations and grantmaking charities, searchable by what the money was actually for.

12 funders with a record of paying for “heating”

Where the money went

1.0×
United Way Inc → The Opportunity Alliance: $2.1M across 4 grants, latest 2024National Grid Foundation → United Way of Massachusetts Bay: $2.1M across 5 grants, latest 2024Barr Foundation → (197) Mystic River Watershed Association Inc: $625K across 1 grant, latest 2022Central Electric Cooperative Inc → Just Komfort Heating & Cooling LLC: $618K across 1 grant, latest 2024The Robert Wood Johnson Foundation → League of Conservation Voters Education: $483K across 2 grants, latest 2023Allegany Franciscan Ministries Inc → Wecount Inc: $200K across 1 grant, latest 2024Virginia G Piper Charitable Trust → The Salvation Army: $200K across 3 grants, latest 2024Maine Technology Institute → Maine Wood Heat Co Inc: $167K across 1 grant, latest 2022Mystic River Watershed → Greenroots Inc: $163K across 3 grants, latest 2025Maine Community Foundation Inc → United Way of Southern Maine: $91K across 1 grant, latest 2024Northwest Regional Council of Smart → Az Heating & Air LLC: $64K across 3 grants, latest 2025Community Winterhelp Inc → Fern Creek Highview United Ministries: $35K across 1 grant, latest 2023United Way Inc → York County Community Action: $539K across 4 grants, latest 2024National Grid Foundation → Catholic Charities of the Diocese of Albany: $450K across 2 grants, latest 2024Barr Foundation → (194) Metropolitan Area Planning Council: $415K across 1 grant, latest 2022Central Electric Cooperative Inc → Just Komfort Heating and Cooling LLC: $415K across 1 grant, latest 2023The Robert Wood Johnson Foundation → Resources Legacy Fund: $270K across 1 grant, latest 2024Virginia G Piper Charitable Trust → Society of St Vincent De Paul: $200K across 3 grants, latest 2024Allegany Franciscan Ministries Inc → Six Eye Films: $130K across 1 grant, latest 2024Maine Technology Institute → Tree Free Heat LLC: $116K across 2 grants, latest 2022Mystic River Watershed → Codman Square Neighborhood Developm: $108K across 2 grants, latest 2023Maine Community Foundation Inc → Aio Food and Energy Assistance: $85K across 2 grants, latest 2024Northwest Regional Council of Smart → Capital Heating & Cooling: $63K across 2 grants, latest 2024Community Winterhelp Inc → Central Louisville Community Ministries: $28K across 1 grant, latest 2023Barr Foundation → (242) Mystic River Watershed Association Inc: $400K across 1 grant, latest 2023National Grid Foundation → United Way of Long Island: $400K across 2 grants, latest 2024United Way Inc → United Way of Mid Coast Maine: $317K across 4 grants, latest 2024The Robert Wood Johnson Foundation → California U of Los Angeles: $228K across 1 grant, latest 2023Virginia G Piper Charitable Trust → Phoenix Rescue Mission: $150K across 2 grants, latest 2024Central Electric Cooperative Inc → Diversified Heating & Cooling Inc: $137K across 1 grant, latest 2022Maine Technology Institute → Huga Heat LLC: $108K across 3 grants, latest 2024Allegany Franciscan Ministries Inc → Wecount Inc - Que Calor Heat Safety Education With Florida's Outdoor Wo: $100K across 1 grant, latest 2023Mystic River Watershed → My Brother's Table: $100K across 2 grants, latest 2023Maine Community Foundation Inc → Downeast Community Partners: $81K across 1 grant, latest 2024Northwest Regional Council of Smart → Rmr Heating & Cooling LLC: $59K across 2 grants, latest 2024Community Winterhelp Inc → Jeffersontown Area Ministries: $27K across 1 grant, latest 2023National Grid Foundation → Catholic Charities of Brooklyn Queens: $250K across 1 grant, latest 2024National Grid Foundation → Catholic Charities of Staten Island: $250K across 1 grant, latest 2024Barr Foundation → (294) Trustees of Boston University: $200K across 1 grant, latest 2023Barr Foundation → (240) Trustees of Boston University: $200K across 1 grant, latest 2022Barr Foundation → (834) Trustees of Boston University: $180K across 1 grant, latest 2024United Way Inc → Penquis Cap Inc: $145K across 4 grants, latest 2024United Way Inc → Kennebec Valley Community Action Program: $142K across 4 grants, latest 2024The Robert Wood Johnson Foundation → Tempe City of: $134K across 1 grant, latest 2022United Way Inc → Community Concepts: $131K across 4 grants, latest 2024The Robert Wood Johnson Foundation → C40 Cities Climate Leadership Group: $125K across 1 grant, latest 2024Virginia G Piper Charitable Trust → Arizona Faith Network: $125K across 2 grants, latest 2023Virginia G Piper Charitable Trust → Human Services Campus Inc: $125K across 3 grants, latest 2024National Grid Foundation → Brooklyn Org: $113K across 1 grant, latest 2024Central Electric Cooperative Inc → Just Komfort Heating & Cooling LLC: $109K across 1 grant, latest 2022Barr Foundation → (206) Green Energy Consumers Alliance Inc: $100K across 1 grant, latest 2023Barr Foundation → (165) Green Energy Consumers Alliance Inc: $100K across 1 grant, latest 2022Barr Foundation → (360) Green Energy Consumers Alliance Inc: $100K across 1 grant, latest 2024Maine Technology Institute → Amply Energy Inc: $100K across 2 grants, latest 2023Mystic River Watershed → La Colororative Inc: $100K across 2 grants, latest 2023Virginia G Piper Charitable Trust → Arizona Community Action Association Inc: $100K across 1 grant, latest 2024Mystic River Watershed → Self Help Inc: $89K across 2 grants, latest 2023The Robert Wood Johnson Foundation → Yale U: $85K across 1 grant, latest 2022The Robert Wood Johnson Foundation → Jackson City of: $84K across 1 grant, latest 2023Barr Foundation → (207) New Buildings Institute Inc: $80K across 1 grant, latest 2022Virginia G Piper Charitable Trust → Central Arizona Shelter Services: $75K across 2 grants, latest 2024Virginia G Piper Charitable Trust → Arizona Ecumenical Council: $75K across 1 grant, latest 2024Mystic River Watershed → Authentic Caribbean Foundation: $74K across 2 grants, latest 2023United Way Inc → Aroostook County Action Program: $74K across 4 grants, latest 2024National Grid Foundation: $3.6M on this topic. Open the funder.National Grid Foundation$3.6MUnited Way Inc: $3.5M on this topic. Open the funder.United Way Inc$3.5MBarr Foundation: $2.4M on this topic. Open the funder.Barr Foundation$2.4MThe Robert Wood Johnson Foundation: $1.4M on this topic. Open the funder.The Robert Wood Johnson Found…$1.4MCentral Electric Cooperative Inc: $1.3M on this topic. Open the funder.Central Electric Cooperative…$1.3MVirginia G Piper Charitable Trust: $1.1M on this topic. Open the funder.Virginia G Piper Charitable T…$1.1MMystic River Watershed: $634K on this topic. Open the funder.Mystic River Watershed$634KMaine Technology Institute: $491K on this topic. Open the funder.Maine Technology Institute$491KAllegany Franciscan Ministries Inc: $430K on this topic. Open the funder.Allegany Franciscan Ministrie…$430KMaine Community Foundation Inc: $256K on this topic. Open the funder.Maine Community Foundation Inc$256KNorthwest Regional Council of Smart: $186K on this topic. Open the funder.Northwest Regional Council of…$186KCommunity Winterhelp Inc: $90K on this topic. Open the funder.Community Winterhelp Inc$90KThe Opportunity Alliance: received $2.1M on this topicThe Opportunity Alliance$2.1MUnited Way of Massachusetts Bay: received $2.1M on this topicUnited Way of Massachusetts Bay$2.1M(197) Mystic River Watershed Association Inc: received $625K on this topic(197) Mystic River Watershed As…$625KJust Komfort Heating & Cooling LLC: received $618K on this topicJust Komfort Heating & Cooling…$618KYork County Community Action: received $539K on this topicYork County Community Action$539KLeague of Conservation Voters Education: received $483K on this topicLeague of Conservation Voters E…$483KCatholic Charities of the Diocese of Albany: received $450K on this topicCatholic Charities of the Dioce…$450K(194) Metropolitan Area Planning Council: received $415K on this topic(194) Metropolitan Area Plannin…$415KJust Komfort Heating and Cooling LLC: received $415K on this topicJust Komfort Heating and Coolin…$415K(242) Mystic River Watershed Association Inc: received $400K on this topic(242) Mystic River Watershed As…$400KUnited Way of Long Island: received $400K on this topicUnited Way of Long Island$400KUnited Way of Mid Coast Maine: received $317K on this topicUnited Way of Mid Coast Maine$317KResources Legacy Fund: received $270K on this topicResources Legacy Fund$270KCatholic Charities of Brooklyn Queens: received $250K on this topicCatholic Charities of Brooklyn…$250KCatholic Charities of Staten Island: received $250K on this topicCatholic Charities of Staten Is…$250KCalifornia U of Los Angeles: received $228K on this topicCalifornia U of Los Angeles$228KWecount Inc: received $200K on this topicWecount Inc$200KThe Salvation Army: received $200K on this topicThe Salvation Army$200KSociety of St Vincent De Paul: received $200K on this topicSociety of St Vincent De Paul$200K(294) Trustees of Boston University: received $200K on this topic(294) Trustees of Boston Univer…$200K(240) Trustees of Boston University: received $200K on this topic(240) Trustees of Boston Univer…$200K(834) Trustees of Boston University: received $180K on this topic(834) Trustees of Boston Univer…$180KMaine Wood Heat Co Inc: received $167K on this topicMaine Wood Heat Co Inc$167KGreenroots Inc: received $163K on this topicGreenroots Inc$163KPhoenix Rescue Mission: received $150K on this topicPhoenix Rescue Mission$150KPenquis Cap Inc: received $145K on this topicPenquis Cap Inc$145KKennebec Valley Community Action Program: received $142K on this topicKennebec Valley Community Actio…$142KDiversified Heating & Cooling Inc: received $137K on this topicDiversified Heating & Cooling I…$137KTempe City of: received $134K on this topicTempe City of$134KCommunity Concepts: received $131K on this topicCommunity Concepts$131KSix Eye Films: received $130K on this topicSix Eye Films$130KC40 Cities Climate Leadership Group: received $125K on this topicC40 Cities Climate Leadership G…$125KArizona Faith Network: received $125K on this topicArizona Faith Network$125KHuman Services Campus Inc: received $125K on this topicHuman Services Campus Inc$125KTree Free Heat LLC: received $116K on this topicTree Free Heat LLC$116KBrooklyn Org: received $113K on this topicBrooklyn Org$113KJust Komfort Heating & Cooling LLC: received $109K on this topicJust Komfort Heating & Cooling…$109KCodman Square Neighborhood Developm: received $108K on this topicCodman Square Neighborhood Deve…$108KHuga Heat LLC: received $108K on this topicHuga Heat LLC$108KWecount Inc - Que Calor Heat Safety Education With Florida's Outdoor Wo: received $100K on this topicWecount Inc - Que Calor Heat Sa…$100KMy Brother's Table: received $100K on this topicMy Brother's Table$100K(206) Green Energy Consumers Alliance Inc: received $100K on this topic(206) Green Energy Consumers Al…$100K(165) Green Energy Consumers Alliance Inc: received $100K on this topic(165) Green Energy Consumers Al…$100K(360) Green Energy Consumers Alliance Inc: received $100K on this topic(360) Green Energy Consumers Al…$100KAmply Energy Inc: received $100K on this topicAmply Energy Inc$100KLa Colororative Inc: received $100K on this topicLa Colororative Inc$100KArizona Community Action Association Inc: received $100K on this topicArizona Community Action Associ…$100KUnited Way of Southern Maine: received $91K on this topicUnited Way of Southern Maine$91KSelf Help Inc: received $89K on this topicSelf Help Inc$89KYale U: received $85K on this topicYale U$85KAio Food and Energy Assistance: received $85K on this topicAio Food and Energy Assistance$85KJackson City of: received $84K on this topicJackson City of$84KDowneast Community Partners: received $81K on this topicDowneast Community Partners$81K(207) New Buildings Institute Inc: received $80K on this topic(207) New Buildings Institute I…$80KCentral Arizona Shelter Services: received $75K on this topicCentral Arizona Shelter Services$75KArizona Ecumenical Council: received $75K on this topicArizona Ecumenical Council$75KAuthentic Caribbean Foundation: received $74K on this topicAuthentic Caribbean Foundation$74KAroostook County Action Program: received $74K on this topicAroostook County Action Program$74KAz Heating & Air LLC: received $64K on this topicAz Heating & Air LLC$64KCapital Heating & Cooling: received $63K on this topicCapital Heating & Cooling$63KRmr Heating & Cooling LLC: received $59K on this topicRmr Heating & Cooling LLC$59KFern Creek Highview United Ministries: received $35K on this topicFern Creek Highview United Mini…$35KCentral Louisville Community Ministries: received $28K on this topicCentral Louisville Community Mi…$28KJeffersontown Area Ministries: received $27K on this topicJeffersontown Area Ministries$27K
12 funders, 64 recipients, grants matching “heating” only. Ribbon width is proportional to the total given; each funder has its own colour (smaller funders in gray). Hover a name to isolate its flows, click a funder to open it. Drag to move around; zoom with the buttons, a double-click, or the wheel after clicking the map.

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Source: IRS Form 990-PF Part XV and Form 990 Schedule I, tax years 2019–2025. These are grants already paid, a record of what an organization funds rather than an open call. Private foundations rarely accept unsolicited applications and the route in is usually a program officer; grantmaking charities and associations more often run real application cycles, so check their website. How this data is built, and its limits →