How to Write a Gas Engineer Quote That Wins the Job

A gas engineer sending a quote is competing not just on price, but on perceived professionalism, trust, and clarity. Most domestic customers aren't comparing gas engineers like they compare supermarket prices — they're making a judgment about who they trust to work in their home on safety-critical equipment.

The most common reasons quotes fail:

• Too vague: "Install new boiler — £2,400" gives the customer nothing to evaluate. They don't know what boiler, what's included, what happens if complications arise, or what you're guaranteeing
• Sent too slowly: A quote sent 3 days after the survey loses to a competitor who sent theirs the same evening. Response speed signals professionalism and interest
• No credentials included: Customers searching online can't easily distinguish good engineers from bad ones. A Gas Safe number, insurance details, and review links in your quote do this work
• No clear next step: Quotes that don't tell the customer what to do next — "Reply to this email to proceed and I'll contact you to arrange a start date" — don't convert as well as those that do

A professional gas engineer quote should contain:

• Customer name and address — personal, not generic
• Date and quote validity — "This quote is valid for 30 days from [date]"
• Specific job description — not "install boiler" but "supply and install Worcester Bosch Greenstar 4000 25kW combi boiler, including all fittings, new flue and flue terminal, magnetic system filter, and commissioning." This specificity shows you know what you're doing and makes the quote easier to compare (or not) with others
• What's included and excluded — "Included: boiler, flue, filter, commissioning, Gas Safe notification. Excluded: any additional pipework required due to structural access constraints (to be quoted separately if required)"
• Guarantee terms — "Manufacturer's 5-year warranty on Worcester Bosch parts; 12-month labour guarantee on our installation"
• Your Gas Safe registration number
• Price breakdown — boiler, materials, and labour separately or as a total with a breakdown of what's included
• Payment terms and deposit required
• Your contact details and a call to action

Research on service industry conversion rates consistently shows that response time is one of the strongest predictors of winning or losing a quote. A customer who receives your quote within 2 hours is far more likely to choose you than one who receives it 3 days later.

Most gas engineers are on site all day and write up quotes in the evening or "when they get time." This creates a systematic disadvantage. Using job management software or a template that lets you create a professional quote on your phone in 5–10 minutes on site is one of the highest-impact changes you can make.

Set a standard: every quote sent within 4 hours of the survey, ideally within 2. If you're too busy on certain days to do this, that's a signal you need a system or a person to help with admin — not an excuse to delay.

By the time a customer is reading your quote, they may have received 2–3 others. Your quote needs to do the work of differentiating you — not just on price or what's included, but on why you specifically should be trusted with their home.

Include or reference:

• Your Gas Safe registration number (customers can verify this at gassaferegister.co.uk)
• A link to your Google reviews: "We have 87 five-star reviews on Google — search [Your Business Name] to see what our customers say"
• How long you've been trading: "In business since 2012" signals stability and experience
• Any relevant accreditations (Worcester Bosch Accredited Installer, Vaillant Advance, etc.) — manufacturer accreditation schemes validate your competence with specific brands and extend warranty periods

These elements cost nothing to include and materially improve conversion. A customer comparing two similarly-priced quotes will choose the one that feels safer — the one from an engineer who has demonstrated their credentials and has 80 reviews behind them.

Most gas engineers send a quote and wait passively to hear back. A systematic follow-up doubles your conversion rate on sent quotes without any additional work.

Simple follow-up process:

• 24 hours after sending: Brief message or call — "Hi [name], just following up on the quote I sent yesterday for your boiler installation. Have you had a chance to look at it? Happy to answer any questions."
• 5 days after sending: Second follow-up — "Hi [name], I wanted to check whether you'd like to proceed with the installation. I have availability in the week of [date] if you'd like to confirm."
• 10–14 days after sending: Final follow-up — "Hi [name], this is my last follow-up on the quote I sent. If you've gone with another engineer, no problem — but if you'd like to discuss anything or proceed, my diary still has some availability."

Many engineers don't follow up at all. Those who do consistently win jobs that the passive approach would lose. Most customers who don't respond to a quote haven't chosen someone else — they've just not made a decision yet. A polite nudge at the right moment is often enough to close the job.