Your next job. Your own branded paperwork. Try Essential free for seven days. No card required. Up to two engineers.
Start your free trial ↗How the trial worksESSENTIAL HEATING SERVICES LIMITED
Built by an engineer. Made for your working day.
Essential is Trade Certificate & Job Software by Essential Heating Services Limited, built for gas and heating businesses across the UK.
Explore the Essential package27 years on the tools
Founder James Donner started in the UK heating trade at 18. His 27 years of hands-on experience inform the priorities behind Essential: clear records, your company on the paperwork, and a straightforward route from the job details to the finished document.
A quote when needed, the right certificate for the job, and an invoice afterwards. Essential brings these documents and free engineer calculators together, with two engineers included in the base package.
Certificate software for your company
Essential Heating Services Limited operates essentialheatingservices.co.uk. The website provides digital work records and certificate tools for the UK gas and heating trade, including natural gas, LPG, unvented hot water and renewable heating.
Save your company and engineer details during setup, then bring those details into your records automatically. Complete the questions, review the answers, sign and create a company-branded A4 PDF. Public sample certificates show fictional companies and customers.
One account, including the IGEM/UP/1B Calculator
The independent IGEM/UP/1B Calculator is part of Essential, with its own address at calculator.essentialheatingservices.co.uk. It uses the same Essential account and subscription as the main website.
Use the on-screen calculator free, create a free account to save results, and use an Essential subscription for certificate issuance and PDF/report downloads. Monthly and annual plans include up to two engineers; additional engineer places are available.
Company and customer support
Essential Heating Services Limited is registered in England and Wales, company number 13003130. Our registered office is 9 Brocklesby Close, Hessle, HU13 9HH, United Kingdom.
For software, account or subscription help, email support@essentialheatingservices.co.uk. Company enquiries can be sent to admin@essentialheatingservices.co.uk. The official main website is https://essentialheatingservices.co.uk/; the www address redirects to it.
Independent tools for competent engineers
Essential is an independent software service. Its original work records and calculator are not affiliated with or approved by IGEM or Gas Safe Register. Engineers remain responsible for their work, competence and the information they record.
Explore the current package, public samples and calculator before creating your account. Your saved records and company numbering stay with your company.
Quotes, invoices and free engineer tools
The same Essential account supports company-branded quotes and invoices, including itemised work, optional VAT, payment terms and a cash-paid invoice option. Free accounts save supported drafts; numbered documents and PDF downloads are package features.
The free gas rate calculator works without an account and keeps only a temporary recent-results list in the current page. Free on-screen IGEM/UP/1B and installation-volume calculations support saved results through an Essential account.
Essential invoice software Essential quote software Free gas rate calculator