Heating work sits on the more regulated end of the trades. Getting the certification and warranty side right from day one avoids problems that are hard to unwind once a boiler is already installed.
Get registered before you take your first gas job
Gas Safe registration, or your local equivalent, is not optional if any part of your work touches gas appliances, and customers increasingly check the register before booking. Confirm exactly what is required in your area before advertising gas work. This is one trade where you cannot legally work it out as you go.
Put your registration number on the quote itself
Not just your invoice or van signage, but the document a customer is actually deciding over. A visible registration number on the quote is a stronger trust signal than any amount of marketing copy about being "fully qualified." It is what a cautious customer is specifically looking to check.
State warranty conditions plainly, not just the headline length
Manufacturer boiler warranties are almost always conditional on annual servicing, and customers often miss that condition until they need to claim on it. A line like "10-year warranty subject to annual service" protects you from blame later. It is also what turns a one-off install into a recurring service customer.
Offer the first annual service at a fixed, pre-agreed price at the point of installation. Customers who commit early rarely shop around for it later, and it is one of the easiest pieces of repeat revenue in this trade.
Price power flushing and scope boundaries explicitly
A power flush protects a new boiler from debris in an old system, but it is easy to skip on a quote and hard to justify adding afterwards. List it as its own line with a brief reason why. For full installs rather than swaps, also state which radiators and pipework are included. A mismatch here is the most common "that's not what I thought I was paying for" moment in heating work.
Keep testing equipment calibration up to date
Issuing a certificate from equipment that is out of calibration is a far bigger problem than the inconvenience of getting it recalibrated on schedule. A simple recurring reminder for each piece of test equipment protects both your certification work and your registration status.
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