Banker Intelligence Series · Trades and field services

Banker’s guide to hvac contractors

Three revenue streams on three different clocks, two dead months a year, and six to ten tools that do not talk to each other.

9 min read · NAICS 238220 · Plumbing, Heating, and Air-Conditioning Contractors

111,207U.S. establishments, NAICS 238220Plumbing, heating, and air-conditioning contractors
1,214,761People employedPaid employees, mid-March pay period
10.9Average employees per establishmentWhich is why this is a small business conversation

Source: U.S. Census Bureau, County Business Patterns, 2023, checked 2026-10-24.

Set this guide up for you

The guide stays the same. These two answers change the numbers and the way the conversation is framed — and they are independent of each other.

The kind of banking you do

Changes which products fit, what to ask, and how to talk to the owner.

How wide you are looking

Nothing to do with your job title. A micro business banker researching a vertical nationwide is a normal reason to be here.

What people use this for
  • Walking into a first meeting. Read sections one to three, then the conversation at the end. Twenty minutes and you sound like someone who has worked in the trade.
  • Building a vertical book. Set the coverage to nationwide or to your region and read the market and institution sections. This is how a banker makes the case internally for becoming their bank's expert on one industry.
  • Underwriting or reviewing a borrower. Sections two and three tell you what to probe and what the operating data should look like when it is healthy.
  • Technical assistance and advising. CDFIs, SBDCs and community organisations use the operating sections to coach a client, and the conversation section to prepare them for a lender meeting.
1

How they make money

How the business actually runs

An HVAC contractor is really three businesses stacked on top of each other, each with its own cash cycle. Owners run quoting, dispatch, billing, collections, inventory and payroll themselves, usually without an admin.

Revenue streamHow it worksCash flowTypical ticket
Installation projectsNew systems for homes, commercial builds and replacementsLumpy. Project-based, 30 to 60 day cycles$5,000–$25,000
Service and repairEmergency calls, seasonal tune-ups, diagnostic visitsImmediate. Often collected same day$150–$1,200
Maintenance agreementsAnnual or semi-annual contracts with recurring billingPredictable. Monthly or annual recurring$150–$500 a year per unit

The seasonality is extreme, and it is the whole story

Peak · Q2 and Q4

Cooling season and heating season carry most of the year's revenue. Technician utilisation is at its ceiling and cash is strong.

The danger months · Jan–Feb and Jul–Aug

Profitable firms still run out of cash here. Owners float payroll from personal savings or run up cards. Most have never been offered a seasonal line by their bank.

The owner’s week

  • Quotes written at night after the trucks are back
  • Dispatch rebuilt every morning around emergency calls
  • Invoices raised days after the work, often from memory
  • Collections chased personally, and let slide to keep the customer
2

What keeps them up at night

Where the money actually gets stuck

The seasonal cash gap

Off-season months crush cash flow even at profitable firms. Owners float payroll from personal savings or max out credit cards. Most have never been offered a seasonal line of credit by their bank.

Listen for "We just get through February."

Slow, fragmented collections

Technicians still collect cheques on site or send paper invoices. Commercial accounts stretch to Net 30–45. Owners chase late payments themselves and often let them slide to preserve the relationship.

Listen for Receivables aging that nobody has ever printed.

Software sprawl

A field service tool, QuickBooks, a card reader and spreadsheets, none of which talk to each other. Owners re-enter the same job three times and lose hours every week to admin instead of service calls.

Listen for "I do the books on Sunday."

Equipment and fleet financed badly

A commercial unit runs $15K–$80K and a service van $45K–$65K. Most owners finance through manufacturer credit at a higher rate than their bank would offer, because nobody ever asked.

Listen for A new van in the lot and no loan on your books.

Payment fraud and bad debt

Stolen cards, bounced cheques and commercial clients who dispute invoices after the work is done. Without screening, the owner has already put labour and parts into the job before the loss shows up.

Listen for "We got burned on a job last year."

Inventory blind spots

Parts and refrigerant tracked on a whiteboard. Technicians find the part missing mid-job, which means an emergency purchase at retail, an incomplete install and an unhappy customer.

Listen for Frequent same-day supply runs.

3

How they actually operate

The stack they run every day

Six to ten separate tools, none of them connected to each other and none connected to you. Knowing these by name, and knowing honestly what each is good at, is what makes the conversation land.

CategoryWhat they useWhat it does wellWhere it stops
Field service and dispatchServiceTitan, Jobber, Housecall ProGenuinely good at scheduling, dispatch and technician routing. ServiceTitan is the category standard at the larger end.A monthly subscription per technician. Billing and payments are bolted on, and nothing reaches the bank.
Quoting and estimatesWord and Excel, or the dispatch toolFree, flexible, and the owner already knows it.No path from an approved quote to an invoice. Everything is retyped, which is where the errors and the delays come from.
Invoicing and bookkeepingQuickBooks, FreshBooks, Wave, paperQuickBooks is what the accountant wants and the tax return needs.No automated follow-up, no recurring billing for maintenance agreements, and no tie to the institution.
Payment collectionSquare, PayPal, Venmo Business, chequesWorks on day one with no setup and the technician can take a card in the driveway.2.6%–3.5% on every transaction, funds settle away from you, no fraud screening and no practical ACH for commercial clients.
InventorySpreadsheets, whiteboards, memoryCosts nothing.No reorder triggers and no visibility, so margin leaks out through emergency parts runs.
Bank connectivityManual imports, if anything—You see a balance. You do not see revenue, payment timing or cash flow health.
4

The opportunity in your market

What this vertical is worth where you are looking

Establishment counts come from the U.S. Census. The share is yours. Everything else is arithmetic you can check, on assumptions you can change.

Businesses nationwide — Census County Business Patterns 2023

Per cent. Most institutions hold a single-digit share of any one trade.

Relationships—at that share
Operating deposits—range, at this tier
Lending potential—outstanding
Card volume touched—annual
Per-relationship assumptions — these are ours, change them to yours

Finli’s working ranges for this tier. They are judgement, not Census data, and your own portfolio beats them.

Not market research, not a forecast, not a revenue projection. Your pricing, credit policy and examiner all still apply.

What usually sits on one relationship at this tier

  • Business checking
  • Seasonal line of credit
  • Equipment and fleet loan
  • Merchant processing
  • Payroll and ACH
5

What it means for your institution

Why you are positioned to win this trade

Local relationships still matter here

HVAC contractors are community businesses that prefer institutions who understand seasonal cycles, and they stay once trust is established.

The lending need is a natural fit

Seasonal lines, equipment loans and fleet financing are products you already have. Owners need them and rarely know to ask.

Operating deposits, not idle ones

Operating, payroll, seasonal reserve and equipment holding accounts are exactly the sticky balances every institution wants.

Regulatory complexity is an opening

EPA certification and state contractor licensing mean these owners value a partner who understands compliance.

ProductMeasured onNotes
Business checkingAverage operating balanceOperating, payroll and seasonal reserve
Seasonal line of creditDrawn balanceBridges the Jan–Feb and Jul–Aug troughs
Equipment and fleet loanOutstandingUnits at $15K–$80K, vans at $45K–$65K
Merchant processingAnnual card volumeService calls and deposits on installs
Payroll and ACH servicesPer employee, per yearRecurring maintenance billing originates ACH

Also in play

  • SBA 7(a) for acquisition or expansion
  • Owner-occupied CRE for the shop and warehouse
  • Treasury management above roughly $2M in revenue
  • Business credit card
6

What it means for you

What it does for your book

This is the part the industry decks leave out. A vertical is only worth learning if it changes your numbers.

A reason to call that is not a rate

Asking an owner how they handle collections in February is a conversation. Asking whether they want to move their checking is a quote request.

Four to six products per relationship

Checking, a seasonal line, equipment or fleet, merchant processing and payroll all sit naturally on one HVAC relationship. Few segments cross-sell this cleanly.

Referrals travel inside the trade

Contractors talk to each other, to suppliers and to the general contractors they subcontract for. One well-served HVAC relationship is a pipeline into the rest of the trade.

You see the deterioration first

When collections slow or one payer becomes most of the receivables, it shows in the operating data months before it reaches a financial statement.

The seasonal line is the wedge

It is the product they need most and are least often offered. It is also the easiest one to underwrite once you can see real receivables.

7

How to help them

What a financial ally can actually put in their hands

Finli is the platform underneath; the business sees your institution. These are the things that change the operating picture you have just read about.

Recurring billing and autopay

Maintenance agreements bill themselves. Technicians send a pay-by-link or QR code after the call. Commercial accounts get ACH with automated follow-up.

Quote to invoice with no retyping

An approved estimate becomes the invoice, with terms attached.

Inventory with reorder triggers

Parts, refrigerant and equipment in one place, checked before the technician leaves.

Payment screening before the work

Payers are screened for stolen cards, stolen identity and insufficient funds before labour and parts go into the job.

Customer and service history

Who is due for maintenance, who has an open balance, which accounts carry the revenue.

Receivables you can actually see

Paid against outstanding, monthly revenue, and collections as they happen — reconciled to the account at your institution.

See the hvac contractors industry program your institution can offer

8

The conversation

What to say in the first meeting

The goal is not to sell a product. The goal is to be the first banker who clearly understands how the business runs. The banking follows.

Open with operations

  • What does your revenue mix look like between installs, service calls and maintenance agreements?
  • Walk me through what happens after a technician finishes a job — when does the invoice actually go out?
  • How many of your maintenance customers are on autopay?

Then probe

  • How do you get through February?
  • What are you using for inventory, and how often does a technician find a part missing on site?
  • Who financed the last van?
  • How long do your commercial accounts take to pay?

Position your institution

  • Most of your trade finances equipment through the manufacturer. We can usually beat that rate.
  • If I can see your receivables as they happen, I can size a seasonal line without asking you for six months of statements.
  • We can put the invoicing and collections on our platform, under our name, so the money lands here.

Do not

  • Do not open with a product sheet or a rate.
  • Do not call the slow months a cash flow problem. Call them the shoulder season, the way the owner does.
  • Do not promise a decision you cannot underwrite.

What actually lands with this owner

Language an HVAC owner recognises, and the version of the same point that makes them disengage.

Say thisNot this

Get paid before the truck leaves the driveway.

Accelerate your receivables cycle.

Stop paying 3.5% to a card reader that sends your money somewhere else.

Optimise your payment processing economics.

A line you can draw on in February and pay back in May.

Flexible working capital solutions.

One place for the quote, the invoice and the service history.

An integrated operational platform.

Know the part is on the van before the technician drives out.

Inventory visibility and reorder automation.

Most HVAC owners are already financing somewhere, and already paying someone to take their payments. The only question is whether it is you.

Sources

Operating ranges, per-relationship assumptions and ticket sizes in this guide are Finli’s working judgement, not Census data. They are stated so you can argue with them.

Put these in your bankers’ hands

The Banker Intelligence Series can carry your institution’s name and cover the verticals in your market. Thirty minutes to see how it works.