Best Quoting Software for Plumbers UK 2026: Boiler Installation Pricing, Gas Safe and Emergency Call-Outs

Plumbing quotes span a huge range — from a £90 tap washer job to a £12,000 bathroom and en suite renovation. Getting the quote right matters at every level. Underprice a bathroom renovation and you absorb a week of losses. Overprice a boiler service and you lose the job to a cheaper competitor. The right quoting app gives you templates for common jobs, easy material pricing and professional output that builds trust before you even start work.

UK plumbers have specific requirements that generic quoting tools often miss — Gas Safe registration references, CIS labour and materials separation, boiler installation line items and emergency call-out rate structures. This guide compares the best quoting apps available to UK plumbers and heating engineers in 2026, with a focus on what actually matters on the job.

What Plumbers Need in Quoting Software

A quoting app built for plumbers needs to handle the full range of what you quote day to day. That means material line items you can add quickly — boiler unit, copper pipe fittings, pressure vessel, magnetic filter, cylinder, pump — priced at your trade cost with your markup applied automatically. Labour should be quotable by hour or day rate, with the ability to separate it from materials for CIS purposes.

• Material line items: boiler unit, pipe fittings, cylinder, pump
• Labour by hour or day rate
• Gas Safe number reference field
• Emergency call-out rate template
• Deposit invoice from quote
• CIS-ready labour and materials split
• Professional PDF output
• E-signature or email acceptance

Best Quoting Software for UK Plumbers: Comparison

Sleepless Tradesman

Sleepless Tradesman's AI quoting generates a draft quote from a plain English job description. Type something like "boiler swap, combi to combi, new flue, magnetic filter, inhibitor, two days labour" and it produces a structured quote with line items you can edit — adjusting the boiler unit cost to match what you actually paid at the merchant, tweaking labour rate, adding or removing items. The free tier covers this, so a sole trader plumber can start quoting without a subscription.

Beyond quoting, the platform includes a homeowner marketplace where new plumbing and heating leads come to you — useful for filling gaps in the diary. Deposit invoices are generated from quotes with a card payment link, so customers can pay the deposit online before you order the boiler. The main limitation for heating engineers is that there is no dedicated Gas Safe number field — you add it as a manual note in the quote terms or footer. That is a workaround rather than a proper integration.

Tradify

Tradify's strength for plumbers is template-based quoting. You invest time up front to build a library of reusable quote templates — one for a combi boiler replacement, one for a bathroom installation, one for an emergency call-out — and then populate them in a few minutes per job. The templates hold your standard line items at your usual rates, so you only need to adjust the boiler model and cost, check the labour days and send. For a busy plumber quoting ten jobs a week, the time saving compounds quickly.

Tradify integrates with Xero for accounting, which suits plumbers already using Xero for VAT returns and payroll. It handles the full job lifecycle from quote to invoice. The weaknesses are no AI quoting (you build templates manually) and no dedicated Gas Safe field — you add your registration number to the quote footer yourself.

Powered Now

Powered Now is built in the UK specifically for tradespeople, and it shows in the details. It includes a dedicated Gas Safe registration number field that appears on quotes and invoices automatically — the only app in this list to do this properly. Boiler job templates are available out of the box, and the quote system is aware of CP12 requirements, letting you add relevant notes to heating-related quotes without custom workarounds.

The drawback is that Powered Now is a smaller product with a less polished UX than some competitors. The app is functional but can feel dated compared to Tradify or ServiceM8. For heating engineers who need Gas Safe compliance built in and are happy to trade some UX polish for it, Powered Now is worth the consideration — particularly at the lower price points on its entry tier.

ServiceM8

ServiceM8 lets you build custom quote forms with your standard rates pre-loaded. For a plumbing business with multiple engineers, the ability to standardise what each engineer quotes — same labour rates, same materials markup, same call-out fee — is genuinely useful. The job management side is strong, covering scheduling, dispatch, on-site forms and invoicing in a single platform. Pricing is per job rather than a flat monthly fee at entry level, which suits businesses with variable workload.

The limitations are no dedicated Gas Safe field and no AI quoting. For a sole trader heating engineer, the per-job pricing model can also work out more expensive than a flat subscription once you are doing consistent volume. ServiceM8 is best suited to a plumbing business with two or more engineers where workflow management is the priority over individual quote speed.

Quotient

Quotient produces polished, professional quotes that customers view and accept online with e-signature. The customer experience is strong — they get a well-presented quote in a browser, can see optional extras, and sign off with one click. The quote acceptance notification arrives immediately, letting you proceed with ordering materials or booking the job. For plumbers where winning the job on presentation matters — larger bathroom renovations, premium heating installs — Quotient's output looks credible.

The significant limitation is that Quotient is a quote-only tool. Invoicing is handled separately, and there is no scheduling, job management or Gas Safe field. If you need a full workflow from quote to invoice to payment, you will be paying for Quotient plus a separate invoicing tool. For plumbers who already have invoicing sorted and just want better-looking quotes, it can work — but the lack of an integrated invoice and deposit flow is a real gap.

Emergency Call-Out Rate Template

Emergency call-out quotes should be sent and accepted before you start any work. Build a template that covers the standard structure: a flat call-out fee (typically £75-150 depending on your area and the time of day), a first hour labour rate (typically higher than your standard day rate to reflect mobilisation cost), subsequent hourly rate once the first hour is complete, and parts at cost plus your standard markup.

The key is to send it on site, get written acceptance — even a reply to an email counts — before you begin. This protects you in any dispute over the final bill and sets clear expectations for the customer. Most quoting apps let you send a quote by email from your phone in under two minutes. There is no reason to start emergency work without a signed-off price agreed.

Verdict

For sole trader plumbers and heating engineers, Sleepless Tradesman offers the fastest route to a professional quote with no upfront cost — the AI draft from a job description is genuinely useful for boiler installation jobs where you are quoting the same scope repeatedly with different parts costs. For plumbers who want proper Gas Safe field integration, Powered Now is the right choice despite the older UX. Tradify is the best all-round option for a plumbing business doing consistent volume that wants reusable templates and solid accounting integration.

Whichever tool you use, the discipline of sending a quote before starting work — including for emergency call-outs — protects your income and builds the professional reputation that gets referrals.

Frequently Asked Questions

Related Guides

• Best Job Management App for Plumbers UK
• Best Invoicing App for Plumbers UK
• Best Quoting Software for UK Tradespeople
• Best App for Gas Engineers UK