Best card machine for plumbers and heating engineers UK 2026
See the pick and alternatives for plumbers and heating engineers below, then ask our card-payments broker partner for 2 to 3 matched quotes.
The best UK card machine for plumbers and heating engineers in 2026 is Tap to Pay on iPhone, on SumUp or Square. Typical transaction size, cashflow and contactless use for this trade are in the table below, and the alternatives are listed after it.
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Our pick
Tap to Pay on iPhone
Acquirer: SumUp or Square
Emergency callouts reward instant doorstep payment with no hardware to forget. No-contract acquirers suit the lumpy, one-person cashflow. Pay-by-link handles staged or larger bathroom-install balances.
Read full Tap to Pay on iPhone (no terminal) reviewWhat plumbers and heating engineers card payments look like
- Cashflow shape
- Mixed: frequent small emergency callouts plus occasional large installs. Winter burst-pipe and heating-failure peaks.
- Typical transaction (our estimate)
- £90 to £2,500
- Contactless use (our estimate)
- Lower, with larger payments by chip and PIN
- Recommended acquirer
- SumUp or Square
Transaction sizes and contactless use are our working estimates for sizing a quote, not published statistics. Your own card statements give the real figures.
Card machines compared for plumbers and heating engineers
Headline rate, hardware cost and contract at a glance, from our full terminal reviews.
| Rank | Terminal | Rate | Hardware | Contract |
|---|---|---|---|---|
| #1 | Tap to Pay on iPhone (no terminal) Our pick | Set by the provider you use it with; see that provider's own pricing page | £0 hardware (you already have the iPhone) | No fixed term for the feature itself; any contract is with your provider |
| #2 | SumUp Solo | 1.69% per transaction | £79 + VAT list price (SumUp often discounts it) | No contract |
| #3 | Zettle Reader 2 | 1.75% per transaction | £29 first reader, £69 each extra (ex VAT) | No contract |
Prices and rates checked on the provider's own page: Apple Tap to Pay on iPhone (UK) (2026-10-02); SumUp card readers page (2026-09-25); Zettle card reader page (2026-09-25); Square Terminal page (2026-09-25); Stripe UK pricing page (2026-10-02).
Similar trades
Alternatives for plumbers and heating engineers
- SumUp Solo (free 4G SIM)
- Zettle Reader 2
- Square Reader
Watch outs specific to plumbers and heating engineers
- Emergency-callout customers expect to pay on the spot; carry a charged device.
- Larger install balances may need 3DS via pay-by-link.
- Avoid fixed monthly contracts for a single-van trade.
FAQs
What is the best card machine for plumbers and heating engineers in the UK?
The best UK card machine for plumbers and heating engineers in 2026 is Tap to Pay on iPhone on SumUp or Square. Emergency callouts reward instant doorstep payment with no hardware to forget. No-contract acquirers suit the lumpy, one-person cashflow. Pay-by-link handles staged or larger bathroom-install balances.
How much does a card machine cost for plumbers and heating engineers?
Hardware runs from nothing (Tap to Pay on iPhone, on a phone you already own) to £229 + VAT (Stripe Reader S700), with SumUp Solo at £79 + VAT and Square Terminal at £149 + VAT. Published pay-as-you-go rates on UK cards are 1.69% at SumUp, 1.75% at Square and 1.75% at Zettle, with no monthly fee; contract providers quote a blended or bespoke rate and usually charge monthly terminal rental instead. Your blended monthly cost depends on card volume and average transaction size, so model it on your own numbers with our fees calculator rather than relying on a flat figure.
What is the average transaction size in this trade?
£90 to £2,500, on our working estimate. Your own card statements give the real figure, and it matters because percentage fees and fixed per-transaction fees weigh differently on small and large payments.
How much contactless use is typical for plumbers and heating engineers?
Lower, with larger payments by chip and PIN, on our working estimate. Your own card statements show the real split between tap and chip and PIN, which is worth checking before you choose between a phone-paired reader and a standalone terminal.
What should I watch out for when choosing a card machine for plumbers and heating engineers?
Emergency-callout customers expect to pay on the spot; carry a charged device. Also check the contract length, exit fees, chargeback handling and how quickly money settles into your account.
How we rank
Rankings are built by desk research from each provider's published rates, upfront costs, contract lengths and settlement terms, held in a dated record per terminal (last-reviewed date shown on this page) and re-checked when published pricing changes. We do not hands-on test every device; specs are taken from provider documentation and cited. No provider pays for inclusion or position. MerchantHQ is an introducer. Quote enquiries go to one card-payments broker, Merchant Advice Service, which pays us a fee for each introduction; acquirers do not pay us commission on quote enquiries. That fee never affects a ranking. See our methodology and how we are funded.
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