Privacy Policy

Last updated October 11, 2026

AC Filter Check is a product of Dynamasoft ("we", "us"). It helps landlords and property managers remind tenants to replace HVAC filters and keep a photo record that it was done. This policy explains what we collect and how we use it.

Information we collect

• Landlords and property managers: your email address, login details, company name, and the properties, units and filter details you enter.
• Tenants: your name, mobile phone number and optional email address, provided by your landlord or property manager; the photos you upload; and the record of your text message consent, including the date, time, IP address and browser used when you agreed.
• Messages: the text messages we send you, their delivery status, and any replies you send to our number, including STOP and HELP.

How we use information

• To send maintenance reminders to tenants who have agreed to receive them.
• To show landlords and property managers which filters have been replaced, including the photos.
• To keep the service secure, prevent misuse, and meet legal and carrier requirements.

Text messaging

We only send text messages to tenants who have agreed to receive them. Message frequency varies, typically 1 to 3 messages each time a filter is due. Message and data rates may apply. Reply STOP at any time to opt out, or HELP for help.

We do not sell, rent or share mobile phone numbers or text messaging consent with third parties or affiliates for marketing or promotional purposes. Phone numbers are shared only with the service providers that deliver our messages, and only for that purpose.

Who we share information with

• Your landlord or property manager sees your name, phone number, consent status, and the photos you submit for their property.
• Service providers that run the service for us: hosting (Vercel), database and file storage (Supabase), and text message delivery (Twilio).
• Authorities, when the law requires it.

We do not sell personal information.

How long we keep information

We keep account data, photos and consent records for as long as the landlord or property manager's account is active, and afterwards for as long as needed to meet legal obligations. Consent and opt-out records are kept as proof of compliance.

Your choices

• Tenants can stop text messages at any time by replying STOP.
• You can ask us to access, correct or delete your information by emailing support@acfiltercheck.com. Tenants may also contact their landlord or property manager.

Security

Each landlord's data is kept separate from every other landlord's. Photos are stored privately and tenant links are unique, random and expire. No system is perfectly secure, but we work to protect your information.

Changes

If we change this policy we will update the date at the top of this page.

Contact

Dynamasoft · support@acfiltercheck.com