By Aaron McLeish · 8 min read
A heating engineer I know turned up to a boiler quote last month with the answer ready. The customer’s boiler was twelve years old, not condensing, noisy. So she’d planned the pitch: new A-rated condensing combo, smart controls, 10-year warranty. Price it up, do the job, move on.
The customer said no. She couldn’t afford the smart controls package, didn’t trust the tech anyway, and had a broken spare boiler in the garage from her late husband’s workshop. She just wanted a cheap reliable boiler that would last five years until she downsized.
The engineer had sold her the wrong thing before ever writing a quote, because she never asked. In my eyes, that’s the most expensive mistake you can make on a callout.
Here’s what you need: not a better pitch, but better questions. The right questions asked before you recommend anything. That’s what separates the engineers who close deals from the ones who lose them to competitors.
What You’ll Learn
By the end of this, you’ll understand how to uncover what your customer actually needs before you even open your estimation book. You’ll know how to ask so you don’t waste time pricing the wrong solution. And you’ll see why this single skill moves you from quoting to actually winning work.
Why Are the Questions to Ask Boiler Customers So Often Skipped?
Most heating engineers feel pressure to show expertise. You’ve got years of training. Gas Safe registration. Thousands of installations under your belt. So when you walk through a door, the instinct is to tell people what you know, solve the problem visibly, get the quote written.
Nobody’s paying you to listen. They’re paying you to fix boilers.
Except they’re not. Not yet. They’re paying you to give them a quote. And a quote written without understanding the customer first is a guess wrapped in professionalism.
Picture this: you ask three genuine questions. What happened to the current boiler? How long are you staying in the house? If it’s a replacement under emergency, that customer needs fast, reliable, affordable. Not a premium spec. You’d have just saved yourself from pricing a £3,800 job to a customer who wanted to spend £2,200.
Let me explain why this works. Asking questions does two things at once. It gathers the actual facts you need to price right. And it shows the customer you care about solving their problem, not just making a sale. That’s the moment they start to trust you.
What Questions to Ask Boiler Customers Before You Write the Estimate?
Start with why they’re here. “Tell me what’s happened with the boiler” — not “Your boiler’s broken, right?” Open questions sound simple, but they let the customer tell you what they think is important. One customer tells you it keeps cutting out (intermittent fault, sensor issue maybe). Another tells you it’s old and they’ve always wanted to upgrade (different problem entirely). Same first answer doesn’t fit both people.
Then go deeper. “Are you planning to stay in this house for a long time?” This tells you if they care about long-term efficiency savings or just want something that works cheaply right now. I’ve seen heating engineers pitch 15-year warranties to people moving house in eight months. It’s not a bad product. It’s the wrong product for that customer.
Ask about their comfort expectations. “Is the heating system keeping up with the house?” A retired couple in a bungalow has different needs from a family of four with teenagers and teenage showers. One customer wants zone control and smart scheduling. The other just wants to be warm.
Here’s one that loses most engineers: “What did you think about the last engineer who was here?” If they had a bad experience, your job is not to defend the industry. It’s to listen. Your quote is no good if the customer doesn’t believe you’ll show up or do the job properly. That question starts the trust.
And the one that absolutely no one asks: “Do you use a smartphone or have any smart home stuff already?” Before you recommend a Hive system or any smart control, know if the customer can actually use it. A smart control is waste if the customer has a flip phone or no confidence with apps. Not trying to sell them the wrong thing is more impressive than selling them something fancy.
Consider This: The Three-Minute Fact-Find
Most engineers think the fact-find is something that happens in the kitchen while you’re having a cup of tea, if at all. It’s not. It’s the most important three minutes of the entire quote.
Here’s why. Research shows there’s a clear statistical link between how many questions you ask and whether you actually win the job. Engineers who ask thorough questions close more sales, even when their price is higher. They close more sales because the customer feels heard. Because the estimate addresses their actual needs, not a generic solution. Because by the time you’ve finished asking, you’ve already earned the trust that matters.
The three-minute fact-find isn’t about being chatty. It’s about being intentional. You’re gathering facts. Why they need a new boiler. How long they’ll stay. What their budget world actually looks like. Whether they want the cheapest option or the best option. What scared them about their old boiler. What would actually make them happy.
Then you write a quote that solves those problems, not a quote that solves what you wanted to sell them.
Real Examples From the Heating World
An engineer in Manchester came to us after losing four boiler quotes in a row. Same price as his competitors, good reviews online, but the jobs were going elsewhere. When we walked through his quotes, every single one looked identical. Vaillant combi, 10-year warranty, Hive control, full powerflush, same price to a £2.5k. He was writing quotes to the boiler, not to the customer.
We asked him to spend the next week asking three extra questions on every callout. “Why are you replacing now?” “Are you staying in the house?” “What’s your budget?” Nothing revolutionary. Just questions.
In his next batch of five quotes, four came back as wins. Different specs. Different prices. Different solutions. All because he’d stopped guessing what people wanted and started asking what they actually needed.
A solo heating engineer in Scotland tells the story of a widow whose boiler failed in January. She was on a fixed income, terrified of expensive fixes, just wanted something that works and lasts. When the engineer asked “What does ‘enough’ look like for you?” instead of recommending the most efficient model, she was honest: “Something I can afford, that’s reliable, and I don’t need to worry about.” He quoted a standard A-rated combi with a simple thermostatic control. Half the price of what he’d planned to quote. She loved it. Still recommends him, nearly three years later. He asks.
What You Need to Know About Your Customer’s World
Here’s the thing: people are not being unreasonable when they turn down your quote. They’re choosing based on what matters to them, and you didn’t know what that was because you didn’t ask.
Some customers are motivated entirely by price. They’ve had a breakdown, cash is tight, they want it fixed cheaply and quickly. Other customers have budget but not time. They want the problem solved and then forgotten about. Others have savings and they want it done right — the best boiler, proper controls, no shortcuts.
Without asking, you can’t tell the difference. So you quote the same thing to everyone. Some of those quotes are right. Most are wrong. Wrong isn’t bad. Wrong just loses the job.
Asking questions is how you make sure the quote you write is right for that specific customer, in that specific situation, with that specific life. The gas engineer in Glasgow isn’t writing the same boiler quote to a first-time buyer as to someone upgrading a family home. The emergency breakdown customer isn’t the same customer as the person planning it six months ahead.
Here are the key questions that almost never get asked:
1. Why are you replacing the boiler now?
2. How long are you staying in the house?
3. What’s your budget, ideally?
4. Have you had any heating problems besides the boiler?
5. Do you want the simplest option or would you consider an upgrade?
6. What would make you happy with a new heating system?
The Takeaway
You don’t close more jobs by being a better salesman. You close more jobs by being a better listener. Asking the right questions before you write the quote means the quote actually solves the customer’s problem instead of pitching a generic solution. It means they feel heard. It means your estimate isn’t competing on price alone — it’s competing on understanding.
Planning your questions is more important than planning your pitch. That’s not my opinion. That’s data. Engineers who ask thorough questions close more sales. So the next time you’re on a callout, spend three minutes asking. Why they’re here. How long they’ll stay. What matters to them. Then write a quote that actually answers those questions.
That’s not soft skills. That’s smart business.
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If you want to dig deeper into structuring the entire quoting process — from fact-find through to closing techniques and pricing psychology strategies that make your customers say yes — The Quote Handbook covers the full framework. It’s written specifically for heating engineers and plumbers who want to close more jobs at the right price.
You can grab a copy here: https://amzn.to/3WzrTkJ
Or get in touch with us directly at info@togetherwecount.co.uk, or connect with me on LinkedIn: https://linkedin.com/in/aaron-mcleish
Aaron McLeish, Managing Director
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