Payments for Refrigeration Companies: What Stripe, Square, and the Big Processors Actually Cost You

The walk-in dies at 9 p.m. on a Friday. Your tech is on the roof at 2 a.m., the night manager has a card, and the office won't be awake for six hours. If your payment setup can't close that job before the tech climbs down, it's the wrong setup. Stripe, Square, Adyen, Chase Payment Solutions, Fiserv, Global Payments, and Worldpay all assume somebody's at a desk; refrigeration runs on the opposite assumption. What their published rates cost on real refrigeration tickets — the $350 service call to the $18,000 multi-unit project — follows. Rates checked October 2026. Also see Refrigeration, AI for Refrigeration, and Tech for Refrigeration.

The 2 a.m. test: can your payment setup close a job the office never sees?

Run every payments decision through one filter: the emergency call at 2 a.m. with nobody awake but the night manager. If the setup passes that, the daytime work takes care of itself.

• Capture the card before the tech leaves the roof. The night manager pays at 2:15 a.m. or you're billing net-30 on emergency work. The invoice has to be a text-to-pay link, payable from a phone, with no office involved.
• Authorize the ceiling, capture the reality. Hold funds on the estimate's ceiling when the tech rolls; capture the real number when the job closes. No charge-and-refund — refunds cost you the original fee on most processors.
• Deposits on installs, before the equipment ships. 50% upfront on equipment installs and multi-unit projects. The generic payment links from Stripe and Square don't tie deposit-versus-balance to the proposal, so write it into the proposal itself.
• Put chain accounts on ACH. The 12-location group pays by ACH at about $5 a transfer instead of 2.9% on every invoice. Fleet-scale savings, one setup.
• Card-on-file for contract customers — but price the stored rate. Stripe 3.4% + $0.30 and Square 3.5% + $0.15 run about $14 on a $400 monthly contract versus ~$9.40 on interchange-plus. Fine, as long as you chose it on purpose.
• Respect the roof key-in. Reader dies, you type the card: Square jumps to 3.5% + $0.15 — $158 instead of $103 on the $4,500 install. Carry a backup reader the way you carry a backup manifold gauge.
• Don't trip the freeze. Square's aggregated-risk model holds funds when your pattern breaks — an $18,000 project after a month of $350 service calls is the textbook trigger. Spiky emergency revenue needs a processor that expects spikes.
• Invoice that night, not Monday. The 2 a.m. invoice that waits for the office waits a week. Shops that invoice the same night get paid roughly a week sooner than the Monday-batch crowd.
• Dual price, don't surcharge. Surcharging is legal in most states but banned in Connecticut and Massachusetts. Dual pricing — a cash price and a card price, both displayed — is legal in all 50 states and the card brands allow it.
• Never lease a terminal. A $300 reader at $49 a month for 48 months is a $2,352 reader.

What the night's work actually costs under each processor

The same published rates, priced against the jobs that keep you up at night. Read the $4,500 rows twice — that's where the roof key-in lives.

Square: 2.6%+$0.15 in-person, 2.9%+$0.30 online, 3.5%+$0.15 keyed/stored; Stripe: 2.7%+$0.05 in-person, 2.9%+$0.30 online, 3.4%+$0.30 stored. Interchange-plus = 0.3% markup estimates.

$350 service call: Square $9.25 · Stripe $9.50 · Interchange-plus ~$7.35

$750 emergency repair: Square $19.65 · Stripe $20.30 · Interchange-plus ~$15.75

$4,500 equipment install (invoice online): Square $130.80 · Stripe $130.80 · Interchange-plus ~$94.50

$4,500 install (reader died on the roof, keyed in): Square $157.65 · Stripe $153.30 · Interchange-plus ~$103

$18,000 multi-unit project: Square keyed $630.15 · Stripe online $522.30 · Interchange-plus ~$378 · ACH (0.8%, capped at $5) $5.00

$630 versus $5 on the same $18,000 project. Across $1.2M a year in card revenue, Square takes about $31,380 and interchange-plus takes about $25,200 — a ~$6,180 difference, roughly a compressor inventory. Behind every one of these logos is payments infrastructure — companies like Finix move the money; the logos decide what to charge for the trip.

Two more rows your statement hides. The $150 after-hours dispatch fee you pass through: Square $4.05, Stripe $4.65, interchange-plus ~$3.15. And the costs no rate table shows: chargebacks at $15–$25 per dispute on most processors, plus the junk fees bank-led ISOs stack — statement fees ($10–$15 a month), PCI non-compliance fees, batch fees. Those aren't negotiated; they're avoided by choosing the right provider in the first place.

How a refrigeration shop actually wires this up: notes from Finix's public docs

The workflows above map cleanly onto Finix's public docs — the infrastructure playbook for getting paid at 2 a.m.:

Card on file — tokenization. The restaurant group puts all 12 locations on autopay; you never store a single card number. Finix's Tokenization Forms embed a PCI-compliant form (Web, iOS, or Android SDK) in your page or app. The card number lives only inside Finix's iframe; your server gets a token starting with "TK" and creates a Payment Instrument — the stored-card object — on the customer's Identity via POST /payment_instruments. Monthly contracts charge the stored instrument; Account Updater refreshes the card when the bank reissues it.

Deposits without a developer. Payment Links you text the facilities manager — no integration — and Invoices with partial payments. Your 50% deposit on the $4,500 install: half now, balance on startup day.

Authorize now, capture when done. POST /authorizations holds funds on the emergency estimate's ceiling — reserved, not taken. Tech finishes: POST /authorizations/{id}/captures. Cancels: POST /authorizations/{id}/void. No charge-and-refund — refunds cost you the original fee on most processors.

Refunds cost you twice. POST /refunds sends the money back — and Stripe and Square don't return the original processing fee when you refund. That $4,500 install refund costs you the ~$131 fee on top of returning the money. Authorize-and-capture exists precisely to avoid this.

Webhooks close the loop. Finix fires an event when the payment settles, so your dispatch software marks the invoice paid without anyone checking a bank feed — reconciliation that runs itself, even for the 2am jobs.

The catch, stated plainly: Finix is infrastructure. The dashboard covers the no-code pieces; the API pieces need a developer — test at finix.sandbox-payments-api.com first. You don't open Finix like Square; you ride its rails through a provider built on top, the way a reefer truck rides roads it didn't pave.

Where each processor lands for refrigeration

Run the 2 a.m. test against each name before you sign anything.

Square: fine for a one-van side hustle at $5k a month — until the first $18,000 project or the first 2 a.m. pattern-break freeze. Small and consistent is what Square prices well; refrigeration is neither.

Stripe: great online, useless at 2 a.m. on a roof. It's a developer tool first and a payments company second.

Adyen: enterprise only. Under ~$1M a year, you won't get a call back.

Chase Payment Solutions, Fiserv, Global Payments, Worldpay: bank-led and quote-based, with zero refrigeration guidance. Negotiate hard or pay for the lesson.

Built-in field-service payments (ServiceTitan, FieldEdge, Housecall Pro from 2.59%): convenient, Square-priced. Fine for year one.

Interchange-plus via an independent ISO is the grown-up answer past $20k a month — and the only sane one once chain accounts are on ACH. Get the interchange-plus quote in writing and ask about the four line items that turn a good rate into a bad deal: statement fee, PCI compliance fee, batch fee, monthly minimum. Never sign an early-termination fee (often several hundred dollars), and never lease the terminal.

ClaroPro pairs bilingual voice-to-invoice with payments — the emergency invoice and the text-to-pay link leave the roof the same night.

Refrigeration payments, answered straight

Cheapest way to take an $18,000 project payment? ACH bank transfer — about $5 flat, settled in 3–5 days. That's $600 of waiting.

Will switching processors interrupt business? Not with a one-week overlap: old account live, new charges on the new one, never cancel before the first deposit lands.

Should chain accounts pay by card or ACH? ACH. A $400-a-month contract at 2.9% costs you ~$140 a year per location in fees; ACH costs ~$60 a year total for all of them. Keep the card as the backup method, not the default.

Cash discount or surcharge? Cash discount — legal in all 50 states, no bans to track. Surcharging is banned in Connecticut and Massachusetts and capped by card-brand rules elsewhere; dual pricing (a cash price and a card price, both displayed) gets you the same math with none of the compliance.

What if a restaurant disputes a $4,500 install? Documentation wins chargebacks: the signed proposal, compressor nameplate photos with GPS timestamps, the refrigerant log, the text thread where the manager approved the work. That's the photo-documentation layer in Tech for Refrigeration — it isn't paperwork, it's dispute insurance.

The processor decision is worth roughly $6,200 a year; the 2 a.m. decision — card captured on the roof, chain accounts on ACH, deposits before the equipment ships — is worth more. AI for Refrigeration shows the voice-to-paid workflow. Once a year, run this fee table against your own last 12 months of statements; processors count on you never doing the arithmetic. Re-check these numbers yearly.