Let’s be honest – nobody wakes up excited about finding a boiler and heating engineer. You probably only think about it when your boiler’s packed in, or you’ve got that annual service reminder sitting on the kitchen counter. But here’s the problem: choose badly, and you’ll regret it. We’re talking frozen pipes in February, four-figure repair bills, or dodgy work that could actually be dangerous.
So what separates the best boiler and heating engineers from the cowboys who’ll take your money and leave you worse off? We’ve been in this game long enough at JTS Plumbing and Heating to know exactly what matters – and what’s just marketing waffle.

Qualifications Are the Bare Minimum (Not Something to Brag About)
Right, every single person working on gas appliances needs to be Gas Safe registered. No exceptions, no excuses. If they’re not, walk away immediately. But here’s what gets us – some engineers act like having that registration makes them special. It doesn’t. It makes them legal.
The best boiler and heating engineers in Hertfordshire do considerably more. They attend training sessions on new boiler models even when they’re not required to. They read technical bulletins. They actually understand why a Vaillant behaves differently from a Worcester Bosch, rather than just following the manual blindly.
Experience Is What Saves You When Plans Go Sideways
Installing a boiler in a new-build with perfect pipework? Honestly, that’s easy. Anyone half-competent can follow the instructions. But try installing one in a 1930s semi where previous owners have had three different cowboys tinker with the system. That’s when you need someone who’s genuinely experienced.
The best boiler and heating engineers in London and elsewhere have seen enough disasters that nothing surprises them anymore. There’s no substitute for having dealt with hundreds of weird situations that don’t appear in any textbook.
Turning Up on Time Shouldn’t Be Remarkable (Yet Here We Are)
This one drives us mad. Why is it apparently acceptable in our industry to just not show up? Or to give a “morning” appointment and arrive at 4pm? Your time matters. You’ve probably taken time off work, rearranged your day, or waited in all morning.
When people book boiler servicing and maintenance Cheshunt appointments with us, we give them an actual time, not a vague window. Running behind? We phone before we’re late, not after. Emergency comes up? We reschedule properly, not just ghost you. This isn’t difficult – it’s basic respect. Yet apparently, we’re unusual in this industry for managing it.
The Honest Conversation That Costs Them the Big Sale
A woman called us in December, absolutely convinced her boiler was finished. She’d had someone else look who’d quoted her three grand for a boiler replacement service that Cheshunt companies do regularly. Fair enough, we thought – boilers don’t last forever.
Except that when our engineer got there, the boiler was actually fine. Did we make three grand that day? No. Have we done six jobs for her since, plus everyone she’s recommended us to? Absolutely.
The best boiler and heating engineers tell you what you actually need. Sometimes that means less work, less money for them, but a customer who trusts you completely. Anyone can sell you the expensive option – it takes integrity to recommend the cheaper one when that’s what’s right.
Can They Explain It Without Making You Feel Thick?
Diverter valves, expansion vessels, heat exchangers – it’s all technical terminology that means nothing to most people. And that’s fine! You shouldn’t need a degree in heating engineering to understand what’s wrong with your boiler.
During our boiler service in Hertfordshire visits, we actually explain what we’re checking and why. Not because we think you need to know the technical details, but because it’s your home and your money.
Why This Actually Matters to You
Whether you need boiler servicing in London or emergency boiler repairing in Hertfordshire, the engineer you choose affects everything. Your heating bills for the next decade. How often things break down. Whether you’re freezing at 2am on a Sunday.
At JTS Plumbing and Heating, we’re Gas Safe registered (obviously), we’ve got the experience, we turn up when we say we will, and we’ll give you honest advice even when it costs us money. That’s what being the best boiler and heating engineers means to us – doing the work properly, treating people decently, and being the kind of company we’d actually want to hire ourselves.


