Search the phrase and you get agencies, which is fair enough, because they built the category. What they are selling was designed for a company with a communications function: pushing an unflattering article off the first page, shaping press coverage, protecting a named executive, keeping an encyclopedia entry accurate, standing by for a crisis.
A small HVAC company has none of those problems. It has a Google Business Profile, a pile of reviews, a couple of directory listings it did not create, and a website. That is the entire surface. Reputation management for a business this size is not a smaller version of the enterprise service. It is a different, much shorter job.
The surface you actually have
The panel of results beside your business name is where a stranger forms an impression before they call. The profile on it is yours to control, and Google is direct about what happens when it drifts: "Businesses with complete and accurate info are more likely to show up in local search results. If your business info isn't accurate, your Business Profile might not show up for relevant searches in your area."
So the first piece of reputation work is clerical rather than strategic. Hours that are right, including the holiday ones. A phone number that rings. Services and service area that match what you do today, not what you did when you filled the form in. Optimizing a Google Business Profile covers the detail, and none of it needs an agency.
The three habits
Keep the profile true. Above. It is the least interesting work on this list and the one that quietly goes stale.
Keep recent reviews arriving. A review from last month tells a reader the business is still good. One from several years back tells them it was good once. A business that collected a batch of reviews during a push and then stopped looks, to someone reading it cold, like a business that peaked. The habit that fixes this is asking every customer, on the day, every week, rather than running a campaign twice a year.
Reply, including to the bad ones. Google puts it plainly: "When you reply to customer reviews, it shows that you value their feedback. Positive reviews and helpful replies can help your business stand out." There is a prerequisite, which is easy to trip over if you have never claimed the listing: "Before you can reply to reviews, you must verify your business."
That is the job. Three habits, none of them clever, all of them boring enough that the real failure mode is simply not doing them for a quarter.
The line the category walks right up to
Some reputation products put a sentiment question in front of the review request: ask the customer how it went, route the happy ones to Google, route the unhappy ones to a private feedback form. It is sold as protecting your rating. Google's policy names it directly in the list of things a merchant may not do: "Discourage or prohibit negative reviews, or selectively solicit positive reviews from customers."
The same policy rules out paying for reviews in any currency, including discounts and free work: "Offer incentives ... in exchange for posting any review or revision or removal of a negative review." It also rules out leaning on people while they are standing in your shop: "Merchants should not require or pressure users to leave ratings or write reviews while on the premises, nor should they request that specific content be included."
What is left is permitted and is the whole of what this product does: "Solicit or encourage the posting of content that does represent a genuine experience, without offering incentives to do so or attempting to influence the rating or the contents of the review." Our review requests go to every customer in the job list, with no sentiment step in front of them, because the step is the violation. What Google's review policy forbids goes through the rest of it.
The part worth paying a person for
One piece of the enterprise service is real and does not shrink: something has gone wrong in public. A local news story, a licensing complaint, a lawsuit, a post that travelled. That is communications work with legal exposure and a deadline attached, it needs judgement about what to say in the next few hours, and no software does it. If that is the situation you are in, hire a human who has done it before, and do not expect a review tool to help.
What an agency should not be charging you a monthly retainer for is sending review requests and keeping your hours updated.
The test for whether you should be paying monthly
A retainer makes sense when someone is doing work you cannot do. For the three habits above, the work is short once the sending is automated, which is why the pricing question in this category is worth being skeptical about. What review management software costs looks at the shape of those bills.
The other half of that skepticism is the contract. A service you can leave at the end of the month has to keep earning the money, and a year-long commitment does not. Ours is month to month and cancels from the billing page without an email to anyone, which is the arrangement we argue for on the no-contract page and the one to ask any vendor about before the demo gets going.