A platform that buys a regional HVAC or plumbing company usually gets a good book of customers, a local brand and a team that knows its market. It also gets a phone line, a booking process and a reporting habit that were built by one owner over twenty years, and that match nothing else in the portfolio.
This post is for the operations leader who has to make five or twelve of those behave like one company. Two notes up front. The deal facts below come from published sources and are dated. Everything else is an operating approach, written from how these systems work, not a claim that we ran a specific roll-up. Di-Hy is an AI implementation firm, and the approach below is what we would put on the table in a scoping conversation.
What the public record says about activity
Capstone Partners' July 2026 HVAC services M&A update, covering year-to-date 2026 against the same period in 2025, counted 92 announced or completed transactions in the sector. Of those, 47 involved financial sponsors, and sponsor add-ons (acquisitions made onto an existing platform) were the largest category at 41.3%, or 38 deals. Nine new platforms were created in the period, against ten a year earlier. Capstone describes the model as sponsors building platform service lines and then rolling up small, local operators.
That is HVAC services only, and it is one advisory firm's count, so treat it as a directional read. It does show the pattern that creates the operational problem: add-ons arrive faster than the platform's operating model can absorb them. We did not find a public source we could verify for PE activity in plumbing or electrical, so we are not quoting one.
Why the phone is the first thing to standardize
A newly acquired brand has plenty that could be integrated: payroll, purchasing, fleet, branding, software. The phone line gets priority for three reasons.
- It is where revenue enters. Every booked job starts at a call or a form. A leak at that point costs you more than inefficiency further down.
- It is the cheapest thing to measure. You do not need to merge systems to count calls, answers and bookings. You only need the same definitions.
- It exposes the real condition of the business. An acquired brand's own reporting often says it is doing fine. Call data tells you what happens when a customer actually reaches out.
One caution on benchmarks. ServiceTitan's June 2022 analysis of more than 3,000 trade businesses put the typical call booking rate at 42%, with shops of 25 or more technicians at 59% and shops under five technicians at 24%. Those are ServiceTitan customers, who skew larger and better run than the industry, and the data is from 2022. Use it to frame a conversation, not to grade a brand. Your own portfolio is the better comparison set.
An operating approach, in order
Step 1: Agree on six definitions before you measure anything
Brands will report "answer rate" and "booking rate" in ways that are not comparable. One counts after-hours voicemail as answered. Another counts only calls longer than a minute. Fix the definitions at the platform level before you collect numbers, otherwise you are comparing the definitions.
The six numbers in the weekly booked-jobs report are a workable starting set: inbound leads by source, answer rate, web lead response time, booking rate, booked jobs and revenue, and recovered jobs. Write each definition on one page and make every brand report to it.
Step 2: Baseline each brand for four weeks, changing nothing
Resist the urge to fix on day one. For four weeks, collect the six numbers by brand, and by branch within each brand. You are looking for three things:
- The spread between your best and worst brand on answer rate and booking rate
- Which hours the misses cluster in
- Where the data does not exist at all
That last one is often the most informative. A brand that cannot tell you its answer rate has no phone reporting, and its other numbers deserve less trust.
Step 3: Standardize the booking process, not the brand voice
Each brand has a name customers know, and in many markets that name is worth more than the platform's. Do not take that away. What you standardize is behind it:
- The questions asked, in the same order, on every call
- The emergency definition and the dispatch rule that follows
- The rule for when to book, quote or refer out
- What gets logged and where
- How a booking is tagged so it can be attributed
A caller to "Smith Heating" still hears Smith Heating. The CSR or AI agent behind it follows the same one-page process. That keeps local identity and gives you comparable data.
Step 4: Decide what is central and what is local
This is the real design decision. In short: central teams are good at coverage, overflow and after hours, and local offices are good at knowing the market, the street names and the lead tech. Most platforms end up with a hybrid. Decide it deliberately, brand by brand, rather than by default.
Step 5: Fix coverage gaps first, then consider automation
The first wins are rarely sophisticated. Brands that miss calls at 8 a.m. need overflow. Brands that miss calls after 6 p.m. need an after-hours path, which we cover in after-hours call triage for HVAC and plumbing. Only after those are in place does it make sense to add AI for answering, qualification and follow-up. Our buyer's guide to AI receptionists for contractors covers what to test.
Step 6: Plan for the software mess
Acquired brands will be on different field service platforms: some on ServiceTitan, some on Housecall Pro, Jobber or an older system, a few on spreadsheets. Do not make a platform migration a precondition for standardized call handling. A layer that sits on top of the call and writes the result into whatever each brand uses is faster than a migration, and it survives the next acquisition. The practical questions are covered in our guide to AI integration with ServiceTitan, Housecall Pro and Jobber. Platform capabilities change, so check each vendor's current documentation before committing.
What to watch for
- A brand that looks great on paper. Self-reported numbers from the seller's last year deserve a phone-level check.
- Consent and opt-out records. If you inherit customer lists, you inherit whatever consent evidence exists. If you plan outbound texting or calls to inherited lists, ask counsel what you can rely on. This is general information, not legal advice.
- The one great CSR. Many brands depend on one person who knows how things work. Capture what they do before changing anything, and involve them in the process design.
- Change fatigue. Local teams have just been acquired. A phone standard that arrives with a coaching plan and a clear reason lands better than one that arrives as a memo.
Where Di-Hy fits
Di-Hy sells no software and has no vendor partnerships to protect, so the recommendation can follow what each brand already runs. The Booked-Jobs Recovery System is a fixed-scope engagement, live in 30 days and measured in booked jobs, and it includes missed-call recovery, after-hours qualification and weekly booked-job reports. For a multi-brand platform, we would scope it to one or two brands first, prove the numbers, then extend. If you are working through a call-handling plan for a set of acquired brands, book a strategy call and bring your brand list. For the broader framework on choosing what to fix first, see AI for contractors: where to start.