Dear [Client first name],
Thank you for trusting [Business name] with your seasonal heating and cooling tune-ups. We're writing to let you know about a change to your price, well ahead of time.
From [date], your price will change to [new price] per year.
Over the past few years our costs for parts and filters, and refrigerant have gone up.
Nothing else about your service changes.
If you have any questions, or want to talk about your options, reply to this letter or call us. You're free to cancel before the new price starts.
Thank you for being a customer. We really appreciate it.
[Your name] [Business name]