MERV 8, 11 or 13?

Preview text: Don't guess your rating

Tuesday, Jul 14, 2026 at 9:01 AM EasternKlaviyo

Filter KingMERV 8, 11 or 13?

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Against Filter King's usual

Sent in the 9 AM hour, which holds 18% of its emails; 25% arrive in the 8 AM hour. The subject is 17 characters; its average is 32.

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from o1328.shared.klaviyomail.com [168.245.31.178] by our receiving server with ESMTPS
by recvd-…-zkgsc with SMTP
from (unnamed) by geopod-ismtpd-78 with HTTP

Other sending headers (names only): X-Kmail-Account, X-Kmail-Message, X-Kmail-Ops, X-Report-Abuse, X-SG-EID, X-SG-ID, X-Entity-ID

	Jul 19, 2026 9:01 AM	🥵 Your HVAC has been pulling double shifts
	Jul 18, 2026 11:02 AM	Your AC doesn't get a summer break 🥵
	Jul 16, 2026 9:02 AM	Wildfire smoke + pollen = MERV 13
	Jul 14, 2026 9:01 AM	MERV 8, 11 or 13? (this email)
	Jul 12, 2026 11:03 AM	Never think about filters again
	Jul 10, 2026 9:02 AM	⚠️ Air quality alerts across the U.S.
	Jul 9, 2026 9:02 AM	🌡️Your AC is working overtime