I've been called out to jobs where the customer has said, almost apologetically, "I nearly didn't call you — your website looked a bit old." And I've had customers tell me they'd been about to book someone else but called me because my site looked more professional.
Same engineer. Same Gas Safe ticket. Same ten years on the tools. The only difference was the website.
The jobs you're losing are invisible
The thing about a bad website is that you don't see the damage it's doing. The people who land on it and click off don't call you. They call someone else. You never know they existed. Your conversion rate — the percentage of visitors who become customers — might be 2% when it should be 15%. The difference is lost jobs you never knew you had.
Most plumbers I speak to have no idea how many people visit their website each month. Fewer still have ever looked at where those visitors came from, what page they landed on, or when they left.
The four things that make people click off
I've looked at a lot of plumber and heating engineer websites. The problems are almost always the same:
It loads slowly on mobile. Most customers are searching on their phone, probably standing in their kitchen next to a broken boiler. If your site takes four seconds to load, they're already on the next result.
There's no clear next step. "Welcome to J. Smith Plumbing" is not a call to action. People need to be told what to do: call this number, fill in this form, book online. If it's not obvious within three seconds of landing, they're gone.
It doesn't look like you work in their area. Generic websites with no location-specific content don't rank for local searches and don't build local trust. If your site says "Plumber" and not "Plumber in Maidstone," you're invisible to anyone searching with a location.
It doesn't show proof. Google reviews buried at the bottom. No photos of actual jobs. No Gas Safe badge in a prominent position. Customers are inviting you into their house. They want to feel sure about that before they pick up the phone.
What a good website actually does
A website that works does three things well.
It shows up. Proper local SEO, service-area pages, Google Business Profile set up correctly. You appear when someone in your postcode types "boiler installation" or "emergency plumber near me."
It converts. A visitor becomes an enquiry. That means fast load times, clear calls-to-action above the fold, click-to-call on mobile, and a short form that captures their details without asking for their life story.
It builds trust fast. Gas Safe registration front and centre. Real photos of your work and your van. Google reviews pulled in automatically. Specific service pages that show you know what you're talking about — not a generic "services" page that could belong to any tradesperson.
Most plumbing websites are digital business cards. A business card doesn't book jobs. A well-built website does.
The maths on a properly-built site
An average boiler installation in the South East is around £2,500–£3,500 in 2026. A decent website might cost £2,997 on the Pro plan. If it wins you one extra boiler job that you'd otherwise have lost to a competitor, it's paid for itself in the first month.
The care plan at £79/month costs less than two hours of your own labour rate. It covers hosting, maintenance, and ongoing tweaks. Most engineers I've spoken to spend more than that on diesel in a week.
The maths aren't complicated. The question is whether you want to keep losing the invisible jobs or do something about it.
If you want to talk through what's wrong with your current site (or whether a new one makes sense), book a 30-minute call. No pitch — just a conversation between engineers.