Markup and margin both describe the profit you...
Gas Engineer Software
Blog & Articles
Best Invoicing Software for Plumbers & Gas Engineers (UK, 2026)
Air Source Heat Pump Records Added to Gas Engineer Software
How to Create a Customer Statement: A Guide for Heating and Plumbing Businesses
How to Follow Up On Your Quotes (and Automate the Process)
Quote or Estimate? The Difference, and Which to Send for Heating Jobs
Flue Gas Analyser Calibration: Costs, Where to Go and How Often
Receptionists for Plumbers & Heating Engineers: Human, Virtual and AI Options Compared
Do you need the G3 Unvented Hot Water Qualification?
Flue Gas Analyser Buying Guide — The Best, Cheapest, and Most Popular
What 500+ Gas Engineers Told Us About AI in 2026
![[New Feature] Quote Statuses: See Which Quotes Are Won, Lost, and Still Waiting](https://gasengineersoftware.co.uk/wp-content/uploads/2026/08/Quote-statuses-1080x675.png)