Cover - USD ($) $ in Millions	12 Months Ended
Cover - USD ($) $ in Millions	Apr. 30, 2026	Jun. 15, 2026	Oct. 31, 2025
Document Type	10-K
Document Annual Report	true
Document Period End Date	Apr. 30, 2026
Current Fiscal Year End Date	--04-30
Document Transition Report	false
Entity File Number	001-41266
Entity Registrant Name	CEA INDUSTRIES INC.
Entity Incorporation, State or Country Code	NV
Entity Tax Identification Number	27-3911608
Entity Address, Address Line One	385 South Pierce Avenue
Entity Address, Address Line Two	Suite C
Entity Address, City or Town	Louisville
Entity Address, State or Province	CO
Entity Address, Postal Zip Code	80027
City Area Code	303
Local Phone Number	993-5271
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	false
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float			$ 323.5
Entity Common Stock, Shares Outstanding		41,263,850
Documents Incorporated by Reference	Documents incorporated by reference: Portions of the definitive proxy statement for the 2026 Annual Meeting of Stockholders of the Registrant to be filed subsequently with the SEC are incorporated by reference into Part III of this Annual Report on Form 10-K to the extent indicated herein
Entity Central Index Key	0001482541
Document Fiscal Year Focus	2026
Document Fiscal Period Focus	FY
Amendment Flag	false
Common Stock, $0.00001 par value
Title of 12(b) Security	Common Stock, $0.00001 par value
Trading Symbol	BNC
Security Exchange Name	NASDAQ
Warrants to purchase common stock
Title of 12(b) Security	Warrants to purchase common stock
Trading Symbol	BNCWW
Security Exchange Name	NASDAQ
Warrants to purchase common stock
Title of 12(b) Security	Warrants to purchase common stock
Trading Symbol	BNCWZ
Security Exchange Name	NASDAQ