Why Going Self-Employed as a Gas Engineer Might Be the Best Decision You Ever Make

David Lambert • 13 November 2025

An important first step: make sure you're properly qualified first

Going self-employed could be your best decision yet. Book titled

You know that feeling when you finish a job, the customer's delighted, and you think "I just earned the company £800 and I'm taking home £120"? That's the moment most gas engineers start seriously thinking about going solo.


And honestly? For most who take the leap, it's absolutely worth it. The freedom, the earning potential, the satisfaction of building something that's genuinely yours – it's not just hype. It's real, and it's achievable.


Let's talk about why so many gas engineers are packing in employment and never looking back.

You Keep What You Earn


This is the big one. When you're employed, you might be charging customers £60-80 an hour while taking home £15-20. The company takes the rest for overheads, profit, and everything else.


Go self-employed and that changes completely. Yes, you've got expenses – van, insurance, tools, training – but you're still keeping the lion's share. Most self-employed gas engineers who were earning £30-35k employed find themselves clearing £50-60k within their first couple of years. Some do considerably better.


That's not just extra money. That's holidays you actually want to take. A newer van. Maybe even getting the mortgage paid off early. It's life-changing money for a lot of families.

You Choose Your Own Jobs


No more being sent to jobs you don't fancy. No more awkward customers that the office keeps booking you in with because "someone has to do it." No more working for builders who have paid late.


When you're self-employed, you decide. If a customer's difficult, you don't have to go back. If a job doesn't feel right, you can turn it down. If you want to specialise in certain work and avoid other stuff, that's completely up to you.


This might sound small, but it makes a massive difference to your day-to-day life. You're not just earning more – you're enjoying the work more too.

You Control Your Own Diary


Want to take your kid to their first day of school? Do it. Need to pop out for an hour in the middle of the day? No problem. Fancy a long weekend? Book it.


When you're employed, you're asking permission for everything. When you're self-employed, you're in charge. Obviously you need to be professional and look after your customers, but the flexibility is incredible.


Loads of self-employed engineers say this is actually bigger than the money. Being able to show up for your family, take time off when you need it, and not have to justify yourself to anyone – that's worth a lot.


You Build Something That's Yours

Every job you do, every customer you look after, every good review you get – it's all building your business. Your reputation. Your asset.


When you're employed, you can graft for years and walk away with nothing.


When you're self-employed, you're creating something with real value.


Some engineers eventually take on other lads and scale up. Others just build a solid customer base that keeps them busy and well-paid for decades.


Either way, it's yours. Nobody can take it away from you.


Hand holding megaphone; speech bubble:

Your Reputation Pays Dividends


Do good work, treat people right, and word spreads fast. One happy customer tells their neighbour. That neighbour tells their mate. Before you know it, you've got more work than you can handle, and you didn't spend a penny on advertising.


When you're employed, you can be the best engineer in the company and it makes no difference to your pay packet. When you're self-employed, being good at what you do – and being decent to people – directly translates into more work and more money.


The engineers who get this right barely have to advertise. Their phone rings because people want them specifically.


You Can Grow With the Industry

The heating industry's changing fast. Heat pumps, renewables, new regulations – there's opportunity everywhere if you're positioned right.


When you're self-employed, you can jump on these opportunities. Get trained up in heat pumps and you're looking at £500-800 per installation, with demand going through the roof.


Add F-Gas and you can cover air conditioning too. The engineers making serious money are the ones who've invested in these skills.


When you're employed, you're stuck with whatever the company decides to do.


When you're self-employed, you can pivot, specialise, and go where the money is.

Blue

But Let's Be Honest – It's Not for Everyone


Before you hand in your notice tomorrow morning, there are some genuine downsides you need to think about:


The admin is relentless


Invoicing, chasing payments, quoting, ordering parts, managing your diary, keeping your books straight. You'll spend hours every week on paperwork instead of earning. Some people dislike this side of it and end up going back to employment.


Your van costs a fortune


Budget £500-800 monthly just for the van. Finance, insurance, fuel, servicing, repairs. When it's off the road, you're not earning. It's a massive ongoing expense that employed engineers never see.


Quiet periods are scary


January's dead. Summer can be slow. When your phone's not ringing and you've got bills to pay, it's genuinely stressful. You need a financial cushion to get through these gaps, and not everyone can build one.

You're on your own


No sick pay. No holiday pay. No guaranteed income. If you're ill, you're not earning. If you want a week off, that's a week with nothing coming in. The security of employment is real, and some people need that.


Bad customers can't be avoided at first


When you're starting out, you'll take jobs you shouldn't because you need the money. Late payers, difficult customers, jobs that aren't worth it. It takes time to build up enough work to be picky.


So Should You Do It?


Look, for most gas engineers who are competent, professional, and willing to put the work in, self-employment is brilliant. The money's better, the freedom's real, and the satisfaction of running your own show is hard to beat.


But if you hate admin, you're not great with money, or you need the security of a regular wage, then maybe employment's the better option. There's no shame in that. Not everyone's built for running a business.


The engineers who thrive going self-employed are the ones who go in prepared. They've got their qualifications sorted, a bit of money saved, proper insurance and Gas Safe registration, and a plan beyond "I'll just wing it."


They also keep learning. The industry's moving towards renewables and new tech, so getting qualified in things like heat pumps and keeping your F-Gas current isn't optional – it's how you stay ahead and keep earning good money.


Get Qualified Without Breaking the Bank


Here's something most engineers don't know: thanks to government funding, you can take your Air Source Heat Pump (ASHP) qualification COMPLETELY FREE at Gas Training & Assessment. No forms to fill in, no hoops to jump through. Just book on, turn up, and we'll claim the funding for you. Zero cost, full qualification.

And if you're serious about maximising your earning potential, add F-Gas air conditioning to your skillset. GTA's pass rates are currently the best in the country. Our purpose-built F-Gas training facility has been recognised as one of the finest around, and the training speaks for itself.


We're not just about heat pumps and F-Gas either. Whether you need your full range of Domestic Gas qualifications, LPG, Ground Source Heat Pumps with Design, or Oil, we've got you covered.


Plus there's a whole range of one-day courses that can add serious value to your offering – Unvented Hot Water Systems, Water Regulations, Legionella, Energy Efficiency, Essential Electrics for central heating wiring, Boiler Fault Finding, Underfloor Heating, and plenty more.

Text:

The self-employed engineers pulling in the big money aren't just good at the basics. They're the ones who've invested in their skills and can offer customers more than the next bloke.


Final Thoughts


If you're thinking about going self-employed, talk to other engineers who've done it. Ask them the difficult questions. Work out if you're actually ready. And if you are? Take the leap. Most engineers who do it say they should've done it years earlier.


Just make sure you're properly qualified first. The work's out there, the money's real, and the freedom's worth it. You just need to be ready to grab it.


A man wearing a black shirt that says g.t.a on it
David Lambert - Author

If you have a question about this or any of our blogs, or training courses then please do not hesitate to get in touch. 

We will always try and answer your question quickly and professionally. 
Get In Touch
Why Gas Engineers Are in Such High Demand Right Now (And What That Means for You)
by David Lambert 3 October 2025
Gas engineers are in desperate demand. Training centres can't fill courses. Learn why this shortage means huge opportunities for your career right now.
Get Ready for 2026: Our New Course Dates Are Here!
by David Lambert 1 September 2025
2026 COURSE DATES NOW LIVE! Book early for gas, electrical, plumbing & heat pump training. Secure your preferred dates at Gas Training & Assessment.
F-Gas Course: Secure Your Lifetime Qualification for Just £1280
by David Lambert 14 August 2025
F-Gas qualification for £1280 - lifetime City & Guilds certification that never expires. Save thousands vs renewals. 5-day course, no experience needed.
Smart Training Choices: How to Get Maximum Value at Gas Training & Assessment
by David Lambert 7 July 2025
Training with GTA you're not just buying a course: you're investing in your future earning potential. Our qualifications open doors, our training gets results.
From Employee to Your Own Boss: A Practical Guide to Becoming a Self-Employed Gas Engineer
by David Lambert 10 June 2025
Complete guide to becoming a self-employed gas engineer. From Gas Safe registration to building clients & managing finances. Start your business today!
Free Heat Pump Training Courses Available at Gas Training & Assessment!
by David Lambert 19 May 2025
Free Air Source & Ground Source Heat Pump training for eligible candidates at Gas Training & Assessment Basildon. Zero cost, full qualification. Limited spaces available.
Why Our F-Gas Course Just Got Even Better
by David Lambert 23 April 2025
Discover our newly accredited City & Guilds F-Gas qualification course in Basildon. Get lifetime certification, hands-on training, and expert instruction for just £1,103 - £350 less than competitors!
Launch Your Air Conditioning Career: Lifetime F-Gas Qualification at an Unbeatable Price!
by David Lambert 7 March 2025
Gas Training & Assessment (GTA) is thrilled to announce our game-changing offer on the prestigious City & Guilds F-Gas qualification (2079-11) for £1103.
URGENT ANNOUNCEMENT: FREE Air Source Heat Pump Training Available!
by David Lambert 5 February 2025
Don't miss this exceptional opportunity! Our comprehensive Air Source Heat Pump Training Course is now completely FREE thanks to government funding
Start Your New Career This New Year with Gas Training and Assessment
by David Lambert 10 January 2025
Are you looking for a career change, eager to upskill, or finally ready to dive into the gas industry, there’s no better time to get started than right now.