Dear Scott,
My wife and I want to offer our utmost thanks to you and your team for the difficult work you did recently in our home. Upgrading our heating system and ensuring each component was in working order was no small task! We are grateful for your good-natured persistence and your superior technical know-how. Also, our thanks go out to each technician who contributed to the effort: Jim, John, Mark and Ritchie, to name a few.
Sincerely yours, CS