Three Payment Scenarios, Three Optimal Approaches
The mistake most plumbing and HVAC companies make is treating every payment the same. The emergency call, the large install, and the commercial contract are different transactions that benefit from different payment handling:
| Payment Type | Typical Amount | Optimal Method | Why |
|---|---|---|---|
| Emergency service call | $150–$800 | Mobile card reader (collect at door) | Customer expects immediate payment; any delay creates collection issues; card is most convenient at the moment |
| Scheduled service / diagnostic | $100–$500 | Text-to-pay link or in-app payment | Technician sends invoice from the field; customer pays on their phone; no card reader required; creates an invoice trail |
| Large install / replacement | $3,000–$25,000+ | 30–50% deposit (ACH/check) + balance at completion (card optional with disclosed fee, or financing) | Deposit reduces AR risk; customer needs time to decide payment method on large amount; financing increases close rate |
| Recurring commercial contract | $300–$5,000/month | ACH auto-pay | Card costs $9–$145/month per contract in fees; ACH costs $0.50–$2.00/month; over 12 months this is $102–$1,716 per commercial account |
Emergency Service Calls: Collecting at the Door
The moment a plumber fixes a burst pipe or an HVAC tech gets the AC running at midnight, the customer is relieved and ready to pay. Collecting at that moment is significantly more reliable than invoicing later. Field service research consistently shows that same-day collection at service completion is 3–5x more reliable than invoicing after the fact.
For in-field card collection, the options are:
- Square Reader + Square Invoices: $0 for the reader (magstripe/tap); 2.6%+$0.10 card-present. Simple, no monthly fee. Works well for small operators. Limitation: no ACH, no recurring billing, limited field service workflow integration.
- Jobber or HouseCall Pro with built-in payments: Technician creates invoice in the app, sends payment link via text/email, customer pays while the tech is still on-site. 2.9%+$0.30 online; 1% ACH ($10 cap). Best for operators who want scheduling + invoicing + payment in one system.
- Stripe Terminal: Physical card reader ($59–$299); 2.7%+$0.05 card-present. More flexibility for tech-savvy operators building custom workflows; not plug-and-play for field service.
Large Install Financing: Where the Real Revenue Is
HVAC system replacement ($5,000–$15,000), whole-home repiping ($8,000–$20,000), or water heater + tankless unit install ($2,500–$6,000) — these are the jobs that build a plumbing or HVAC business. The close rate on large jobs is where financing matters most.
Customer financing programs for home services work as follows:
- The customer applies for financing (credit decision in 30 seconds for most programs)
- If approved, the customer selects a payment plan (12–72 months)
- The merchant receives payment in full within 24–48 hours
- The merchant pays a merchant fee (the "dealer fee"): 4%–12% depending on the financing term and program
| Financing Provider | Typical Dealer Fee | Consumer Terms Available | Notes |
|---|---|---|---|
| Greensky | 3%–8% | 6–84 months; 0% promo available | Common for HVAC; integrates with ServiceTitan. Approval rates 60–70%. |
| Service Finance Company | 4%–9% | 12–120 months; 0% promo | Designed specifically for home services (HVAC, plumbing, roofing). Longer terms than most. |
| Synchrony Financial | 5%–12% | 6–60 months; 0% promo | Well-known by consumers; same platform used by home improvement retailers. Higher dealer fee. |
| Wisetack | 3.9%–7.9% | 3–60 months | Newer platform; integrates with Jobber and HouseCall Pro. Simpler for smaller operators. |
| Wells Fargo Home Projects | Varies by program | Up to 120 months | Bank-backed; good for large projects. More approval complexity than fintech lenders. |
The math on financing: a $10,000 HVAC replacement that closes 70% of the time without financing typically closes 85–90% when financing is offered at 12 months same-as-cash. A dealer fee of 6% on the additional jobs closed (the incremental revenue from better close rate) is $600 on a $10,000 job — but the alternative was a lost sale entirely. Most HVAC companies that offer financing report that the dealer fee is more than offset by the incremental revenue from jobs that would have been lost.
Commercial Accounts: ACH for Recurring Maintenance Contracts
Plumbing and HVAC companies that service commercial buildings — restaurants, office buildings, retail centers, multi-family properties — often have recurring service contracts ($500–$5,000/month for multi-unit properties). On these contracts, card processing is an unnecessary cost:
| Monthly Contract Value | Card (2.9%+$0.30) | ACH (~$1.00) | Annual Savings |
|---|---|---|---|
| $400/month | $11.90/month | $1.00/month | $130/year per contract |
| $800/month | $23.50/month | $1.00/month | $270/year per contract |
| $1,500/month | $43.80/month | $1.00/month | $514/year per contract |
| $3,000/month | $87.30/month | $1.00/month | $1,036/year per contract |
A commercial HVAC company with 25 recurring commercial accounts averaging $1,200/month saves $9,750–$12,000/year by moving to ACH. Commercial accounts are more willing to set up ACH than residential customers — they're used to paying vendors by bank transfer.
Processor Comparison for Plumbing and HVAC
| Platform | Card Rate | ACH Rate | Field Service Integration | Best For |
|---|---|---|---|---|
| Jobber Payments | 2.9%+$0.30 | 1% ($10 cap) | Native — scheduling, invoicing, payment, client portal | Small-to-mid plumbing/HVAC; best all-in-one workflow |
| HouseCall Pro | 2.9%+$0.30 | 1% ($10 cap) | Native — strong recurring job and contract billing features | Multi-tech operations; strong for commercial contract management |
| ServiceTitan | Custom (interchange-plus for large accounts) | Custom | Native — enterprise, integrates with Greensky financing | Large plumbing/HVAC companies ($2M+ revenue); full business management platform |
| Square | 2.6%+$0.10 in-person; 3.3%+$0.15 invoice | Not available | Minimal — no HVAC/plumbing workflow integration | Very small operators; no ACH is a real limitation for commercial contracts |
| Helcim | Interchange+ 0.40%+$0.08 in-person; effective ~1.7%–2.1% | $0.30+0.50% (no cap) | None native — standalone terminal and invoicing | High-volume operators ($75K+/month) using separate field service software; saves $4.5K–$12K/year vs flat-rate |
Dollar Cost: What Plumbing and HVAC Companies Pay
| Monthly Revenue | All Card (avg 2.9%+$0.30) | Optimized (50% ACH commercial + card residential) | Annual Savings |
|---|---|---|---|
| $25,000/month | ~$745/month | ~$430/month | ~$3,780/year |
| $60,000/month | ~$1,770/month | ~$1,020/month | ~$9,000/year |
| $120,000/month | ~$3,510/month | ~$2,020/month | ~$17,880/year |
| $200,000/month | ~$5,830/month | ~$3,360/month | ~$29,640/year |
5 Payment Mistakes Plumbing and HVAC Companies Make
- Not collecting same-day on service calls. Every day of delay in collecting on a completed service call reduces the probability of collection. Mobile card readers and text-to-pay links make same-day collection trivial. Invoicing 5–7 days later is free money for your customers and unnecessary credit risk for you.
- Flat-rate card processing for commercial maintenance contracts. A commercial building that pays $1,500/month via card costs you $522/year more than ACH. Multiply by 20 commercial accounts and that's $10,440/year in unnecessary fees. Every commercial account should be on ACH.
- No financing option for large jobs. HVAC and plumbing companies that don't offer financing lose 15–25% of large jobs to competitors who do. The dealer fee (4%–8%) is less than the margin on the lost sale. At minimum, have one financing program available and mention it early in the large-job conversation.
- Using a personal account or app (Venmo/Zelle) for business. Beyond the tax and accounting complications, these apps offer no chargeback protection, no invoicing, no records management, and signal to commercial customers that you're not set up as a professional operation.
- Not asking for payment at job completion. A signed invoice + payment at completion is standard professional practice. Technicians who leave without asking for payment — because it feels awkward — create an invoicing and collection cycle that takes 30–60 days and results in partial non-payment. The ask is part of the job close.
Frequently Asked Questions
What is the best way for plumbers and HVAC companies to collect payment in the field?
For emergency service calls, mobile card readers (Square, Jobber with payment, Stripe Terminal) collect payment at the door. For larger jobs, text-to-pay links let customers pay on their phone while the tech is still on-site. For recurring commercial maintenance contracts, ACH auto-pay is far cheaper than cards — under $2/payment vs. $9–$145 on a $300–$5,000 monthly contract. Field service apps like Jobber and HouseCall Pro combine scheduling, invoicing, and payment in one platform and are the most practical solution for most plumbing and HVAC companies.
What payment processor is best for plumbers?
Jobber Payments and HouseCall Pro Payments are most commonly used for their native field service integration. Square and Stripe work but lack workflow features. For high-volume operations ($75K+/month), Helcim's interchange-plus pricing saves $4,500–$12,000/year vs. flat-rate platforms but requires separate field service software.
How should plumbers handle payment for large installation jobs?
30–50% deposit at contract signing (ACH or check) and balance at completion (card accepted with disclosed service fee, or customer financing). Financing through Greensky, Service Finance Company, or Wisetack (dealer fee 3%–9%) increases close rates on large jobs by 15–25% and average ticket size by 40–60%. The dealer fee is consistently less than the margin on lost sales.
Should plumbers charge a credit card fee to customers?
Legal in all 50 states as of 2024 (credit cards only, not debit; 3% maximum; disclosed before service). Timing matters — emergency calls at midnight are the worst moment for a surcharge conversation. Commercial accounts and large scheduled installs are better candidates. Many companies use a cash/ACH discount approach instead: offer 2–3% off for ACH or check payment. Conversion: 30–50% residential, 50–70% commercial.
What MCC code are plumbers and HVAC companies classified under?
MCC 1711 (Air Conditioning, Heating, and Plumbing Contractors). Standard contractor interchange rates: Visa consumer credit 1.65%+$0.10 to 1.95%+$0.10 on rewards cards. Most transactions are card-not-present (invoice payment via link/app), adding 0.15%–0.30% above card-present rates. Commercial purchasing cards (common on commercial accounts) carry higher interchange at 2.50%–2.95%.
Ready to compare processor rates for your plumbing or HVAC business? Use the comparison tool to see current pricing side by side.