Most acquisition entrepreneurs think too small.
They find one HVAC company, buy it, run it, and call it a career. That is a fine outcome. But buyers who understand the HVAC roll up strategy are playing a completely different game. They are buying cash flow machines, stacking them, and building a platform worth 2x to 4x what they paid for the individual pieces.
Here is how it actually works, from the first SBA-financed acquisition through a private equity exit.
Why HVAC Is the Right Sector for a Roll Up
Before getting into mechanics, it is worth understanding why HVAC specifically. Not every industry is roll up-friendly. Plenty of fragmented industries have terrible unit economics or customer dynamics that make consolidation a nightmare. HVAC is one of the better ones, and the reasons are structural.
The business model is recurring and defensible. Maintenance contracts, service agreements, and equipment replacement cycles create predictable cash flow. Once a customer signs a service agreement, retention rates tend to stay high. That is exactly what lenders and eventual acquirers want to see.
The industry is also massively fragmented. Most HVAC companies in the country are owner-operated, single-market businesses doing somewhere between $500K and $5M in revenue. The founders are aging out. Succession is a real problem across the trades. That means deal flow is consistent, and sellers are motivated.
Pricing power is real. Labor costs are high, technician supply is constrained, and customers have limited alternatives when their system fails in July. That translates to margin stability, which is the single most important thing when you are stacking debt across multiple acquisitions.
And then there are the genuine operational synergies. A shared dispatch system, bulk equipment purchasing, unified marketing spend, and a centralized back office can meaningfully reduce costs across a portfolio. These are not hypothetical synergies you put in a pitch deck. They are real line items that show up in the P&L within 12 to 18 months of integration.
What Is an HVAC Roll Up Strategy?
Simple version: you buy multiple HVAC companies over time, consolidate them under a single operating platform, and capture value through scale, margin improvement, and a higher exit multiple.
The math is the math. A single HVAC company doing $800K in seller discretionary earnings might sell at 3x to 4x. That same cash flow, embedded in a platform with $4M to $5M in combined EBITDA, can exit at 6x to 8x in a private equity transaction. You are buying at retail and selling at wholesale. The spread is where the real wealth gets built.
This is not a new idea. Private equity has been running this playbook in HVAC and other home services trades for decades. What has changed is that individual buyers can now execute the same strategy using SBA 7(a) financing for the initial acquisitions, which dramatically lowers the capital barrier to entry.
The Platform Acquisition: Where Everything Starts
You do not start an HVAC roll up by buying five companies at once. You start by buying one solid platform company. Get this wrong, and nothing else matters.
The platform is the foundation. It needs to be a real operating business with existing management, a trained technician workforce, and enough cash flow to service the acquisition debt while leaving room for future deals. A platform target typically has $3M to $6M in revenue and $600K to $1.2M in SDE or adjusted EBITDA.
This first acquisition is likely SBA-financed. On a $2.5M deal with SBA 7(a), you are putting in $250K as your equity injection (the SBA minimum is 10%), borrowing the rest over a 10-year term. At a blended rate around 10.5%, your annual debt service on the SBA loan is roughly $390K per year.
Here is where buyers get into trouble. They look at the debt service number, compare it to the SDE, and think they are done with the math. They are not.
You also need working capital. Two to six months of operating expenses set aside, available from day one. That is non-negotiable. Payroll does not wait for receivables to clear, parts suppliers want payment on their terms, and the first quarter of ownership always has surprises. If your deal structure does not account for working capital on top of the equity injection and closing costs, you are undercapitalized before you start.
So on that $2.5M platform deal, the real cash requirement is not $250K. It is more like $350K to $450K when you factor in working capital reserves and transaction costs. Budget accordingly.
If the business is doing $650K in SDE, your DSCR on the SBA portion alone is around 1.67x. That clears the lender threshold and leaves room to hire a general manager before you move to acquisition two.
What Lenders Scrutinize in an HVAC Roll Up
When you approach an SBA lender for the platform acquisition, the underwriting follows the same framework as any other deal. The lender minimum DSCR is typically 1.25x.
But 1.25x is dangerous. We treat it as inadequate. At that level, one bad quarter, one technician who leaves and takes a book of customers, one slow summer, and you are in covenant trouble. We target 2x on the initial acquisition. Our floor is 1.5x, and even that requires clear synergies or a very compelling growth story to justify the thinner margin.
For HVAC specifically, lenders will scrutinize a few things beyond the ratio.
Revenue concentration is a big one. If 40% of revenue comes from one commercial account, that is a risk flag. Residential service and maintenance contract revenue is more attractive to underwriters than pure new construction, which is project-dependent and lumpy.
Technician retention matters. An HVAC company whose cash flow depends entirely on three technicians who all know the owner personally is a different risk profile than one with 12 certified techs and a training pipeline. Lenders see the difference.
Addback quality is where we spend a lot of time. HVAC owner-operators run personal expenses through the business, and not all addbacks survive underwriting scrutiny. When we evaluate deals internally (we review 120 to 150 per week), addback credibility is one of the first things we stress-test. If it does not tie back to proof of cash, we walk.
Structuring the Add-On Deals
Once you have the platform stabilized, the add-on acquisitions work differently.
These are typically smaller tuck-in deals. Companies doing $1M to $3M in revenue with less management depth. They are cheaper on a per-dollar-of-cash-flow basis and easier to integrate because your platform absorbs them.
SBA 7(a) can finance add-ons as well. Each deal is underwritten separately, but lenders will look at the combined entity’s cash flow when evaluating subsequent acquisitions. That is actually an advantage. The platform’s earnings improve your DSCR on future deals.
One structure we see work well: finance the platform with SBA, then negotiate smaller add-on deals with meaningful seller financing components. A seller note on a tuck-in acquisition at 10-year full standby, 0% interest, keeps your cash service obligations low while you grow. On more than 90% of the deals we work on, we get the seller note structured at 0% interest with full standby. That is not aspirational. That is the standard when you negotiate correctly.
And that structure materially changes your acquisition math. If you can acquire a $1.2M tuck-in with SBA plus a $300K seller note on full standby, your actual cash debt service only reflects the SBA portion. The seller note sits there, accruing nothing, costing you nothing until a future refinance or exit event.
Keep in mind that the SBA has a $5M cap per borrower. You will likely need to layer in conventional financing, seller notes, or outside equity as the portfolio grows beyond that threshold. Planning for that transition from the beginning is part of getting the strategy right.
So that covers the financial architecture. The operational side is a different conversation entirely.
Operational Integration: Where Roll Ups Succeed or Fail
Buying companies is the easier part. Integrating them without losing technicians, customers, or cash flow is where roll ups get into trouble.
The HVAC customer relationship is personal. Homeowners often request the same technician year after year. They trust the local brand name.
If you blow up the culture of an acquired shop in the first 90 days, you will see churn in both staff and service agreement renewals. That destroys the value you paid for.
The better approach: run each acquisition as a semi-autonomous operation for the first 12 to 18 months. Keep local branding if it has equity in the market. Bring in shared back-office functions quietly. Accounting, payroll, dispatching software (and the dispatch piece alone can save 15% to 20% on routing efficiency across locations, which is a real number). Do not force a rebrand or centralized management structure until the integration is stable and the team trusts the new ownership.
The synergies are real, but they need to be captured patiently.
Rushing integration to hit a margin target is one of the most common ways roll ups destroy value. We have seen it happen enough times to know that the operators who move slowly on integration and quickly on acquisition timing tend to come out ahead.
Planning the Exit from Your HVAC Platform
The exit is the whole point. You need to plan for it from deal one.
Private equity firms and strategic acquirers in home services trade on EBITDA multiples, and size matters. A platform doing $1.5M in EBITDA might attract 4x to 5x. That same platform at $4M in EBITDA, with multiple markets, recurring revenue contracts, and professional management, can attract 7x to 9x in a competitive process.
That spread is the engine. The multiple arbitrage between what you paid for individual companies and what the portfolio commands at exit.
Timeline varies, but most serious operators are thinking in a 5 to 7 year window. Two to three years building the platform and completing add-ons. Then two to four years of organic growth and operational improvement before a sale.
Your exit will likely go through an investment bank running a formal process. At the platform size you are targeting, that is the right move. The difference between a well-run sale process and a one-buyer negotiation can be millions of dollars in proceeds. Not a range. A real number that changes your life.
Frequently Asked Questions
What is an HVAC roll up strategy in simple terms?
An HVAC roll up strategy means buying multiple HVAC companies over time, combining them into a single platform, and selling the platform at a higher valuation multiple than you paid for the individual businesses. Buyers capture value both from operational synergies and from the multiple arbitrage between small-company and mid-market pricing.
How much money do I need to start an HVAC roll up?
For an SBA-financed platform acquisition in the $2M to $3M range, you need a minimum 10% equity injection, which is $200K to $300K out of pocket. But that is not the full picture. Budget for 2 to 6 months of working capital reserves plus closing and deal costs. Realistic total cash needed is $350K to $500K depending on the deal.
Can I use SBA loans for multiple HVAC acquisitions?
Yes, with limits. Each deal is underwritten separately, and lenders look at your combined debt load. The SBA caps total exposure at $5M per borrower. For add-on acquisitions beyond that cap, you will need conventional financing, seller notes, or outside equity. Many roll up operators use SBA for the platform deal and negotiate seller financing for smaller tuck-ins.
How long does an HVAC roll up strategy typically take?
Most operators are looking at a 5 to 7 year timeline from first acquisition to exit. The first 1 to 2 years go toward acquiring and stabilizing the platform. Add-on acquisitions happen in years 2 through 4. Years 4 through 7 focus on organic growth, operational improvement, and preparing for a formal sale process.
What makes an HVAC company a good roll up target?
Strong maintenance contract revenue (not just install or project work), geographic density so you can share dispatch and labor, a workforce that is not entirely dependent on the owner, and real EBITDA that survives addback scrutiny. Companies doing $1M to $3M in revenue with clean books and a motivated seller are ideal add-on targets for an existing platform.
Thinking About Building an HVAC Platform?
Regalis Capital advises buyers executing exactly this kind of strategy. We find the deals, stress-test the numbers, negotiate the structure, and manage the SBA process from first call to close.
If you are serious about building a home services platform and want a team that has done this before, start here.