Moments show potential customers, and Google, the quality of your work and where you do it. Consistently publishing relevant content is one of the core things Google's ranking rewards.
Moments can be published to your pages by geography (city or state) and category (job type), so they flow automatically onto category pages, service-area pages, or combined pages.
Keep them short
One small paragraph is plenty, even one or two sentences. The goal is steady, small pieces of content rather than dumping large blocks onto a page.
Vary the content
Use synonyms for your services and variations on regional keywords - neighborhoods, street names where appropriate, city names, zip codes, and colloquial place names - and cycle through them across the month.
Examples (HVAC in Los Angeles)
"Wrapped up an AC installation in bustling Downtown LA today. This modern apartment now has a top-notch cooling system, ready for those hot summer days."
"Spent the morning near the Venice Beach boardwalk tuning up an HVAC system. With the salty sea air, regular maintenance keeps these units running well."
"Ran a performance check on an HVAC system in Pasadena today. In the 91101 zip code, efficiency matters, and this system is now optimized for the season ahead."