Credit Card Processing for Plumbing & HVAC Contractors

Plumbing and HVAC work gets paid in the field: in the driveway, over the phone to the office, or later off an emailed invoice. Plumbing credit card processing comes down to how each of those payments gets taken, because the method decides the price you pay on every job.

Our HVAC contractor guide covers big-ticket system sales. This one covers the day-to-day: service calls, emergency work, commercial accounts and maintenance plans.

How the card gets taken sets the price

The card networks price a transaction partly on how it's accepted. A chip insert or tap, with the card in hand, generally lands in a lower-cost category than a card number typed into a tablet, read over the phone, or entered on a payment link. Plumbing shops do a lot of the second kind.

A few habits keep more of your volume in the cheaper bucket:

• Put a real card reader on every truck. If the customer is standing there, tap or insert the card instead of keying it. Our mobile payment processing guide covers the setup.
• Collect at completion when you can. A card taken in person when the job wraps is usually cheaper than an invoice paid online three days later.
• When you have to key it, key it fully. Phone and invoice payments should include the billing ZIP code and address so the transaction can qualify properly. Our AVS guide explains why that matters.

Emergency calls and deposits

After-hours calls and big replacements are where card habits slip. The office takes a card over the phone to hold a slot, or collects a deposit before ordering a water heater, then runs the balance later.

Each of those is a separate card-not-present charge. That isn't wrong, but know what it costs. Where you can, take the final payment in person, and keep a signed work order with the customer's authorization for anything charged without the card present. If a homeowner disputes a charge after the fact, that paperwork is what you stand on. Our chargeback fees guide covers what a dispute costs.

Commercial and property-management work

If you service restaurants, apartment buildings or office properties, many of those customers pay with business or purchasing cards. Commercial cards can cost more to accept than consumer cards, but some of them qualify for lower interchange categories when you pass extra transaction data, such as the tax amount and a customer code, and on some cards line-item detail.

That extra data is often called Level 2 and Level 3. Your processor and your software both have to support it, and it only helps on qualifying commercial cards. Our Level 2 and Level 3 guide walks through how it works. For large recurring commercial invoices, ask those customers whether they'd pay by ACH instead. Bank transfers carry no card interchange. Our ACH vs credit card guide compares the two.

Maintenance agreements are recurring billing

Drain maintenance plans and annual service agreements usually bill a stored card monthly or yearly. That's recurring card-not-present billing:

• Make sure recurring charges are flagged as recurring in your software.
• Ask about an account updater service, which refreshes expired or replaced cards before a renewal fails.
• Keep the customer's signed authorization for the recurring charge on file.

Check what your field-service software charges

Most shops take payments through their field-service software. The built-in option is convenient, but the pricing is often set by the software company, not negotiated by you. Ask:

• Is processing priced as interchange-plus, or as a flat or bundled rate?
• Are there per-transaction gateway fees on top? Our payment gateway fee guide explains those.
• Can you bring your own processor and keep the software?

Then check your effective rate: total fees divided by total card volume for the month. Our effective rate vs quoted rate guide shows how. On tiered pricing, keyed and commercial cards tend to land in the expensive tiers, which is why interchange-plus is usually easier to audit.

Passing card costs to customers

Surcharging can be done, but the rules are specific:

• Credit cards only. Debit and prepaid cards can never be surcharged, even when the customer runs them as credit.
• Network caps. Visa caps surcharges at 3% and no more than your own discount rate. Mastercard's cap is 4%.
• State rules vary. Connecticut, Maine, Massachusetts and Oklahoma ban surcharging outright, and Colorado caps it at 2%.
• Disclosure. Customers need to see it before they pay, and it gets its own line on the invoice. Our surcharge disclosure guide lays it out.

Some shops prefer a cash discount instead. Our cash discount vs surcharge guide compares the two.

Plumbing credit card processing: a short checklist

1. Pull your last three statements and work out your effective rate on each.
2. Find out whether you're on interchange-plus. If not, ask for it.
3. Put a card reader on every truck and tap or insert whenever the customer is there.
4. Capture billing ZIP and address on every phone, deposit and invoice payment.
5. Ask whether your software sends Level 2 and Level 3 data for commercial cards.
6. Flag maintenance-plan charges as recurring and ask about an account updater.
7. Offer ACH to commercial and property-management accounts.
8. If you surcharge, confirm your state allows it and that debit and prepaid are excluded.

Plumbing credit card processing isn't complicated, but small habits in the field add up over a year of service calls. Use our free benchmark tool, Compare your rate to your industry, to see how your shop's effective rate stacks up against similar contractors. It takes a couple of minutes, and you get a real number to take to your processor.

This is general information, not legal advice; surcharging rules change and vary by state.