Gas safety
CP12 certificates for landlords and HMOs, annual servicing, and a straight explanation of anything that fails. Carried out by a Gas Safe registered engineer.
Do not use this website, a light switch, a doorbell or a mobile phone indoors. Open the doors and windows, turn the gas off at the meter if you can reach it safely, get everybody out, and ring the National Gas Emergency Service on 0800 111 999 — free, 24 hours a day.
Ring them first. Ring us second, on 0114 463 0405, and we pick up the repair once the supply has been made safe.
The legal duty
The responsibility sits with you rather than the tenant, and it does not transfer to a letting agent unless your agreement with them says so in writing.
HMOs & student lets
Sheffield’s rental stock turns over hard in summer, and every property needs a valid certificate before the next tenancy starts. That is a scheduling problem as much as an engineering one.
Carbon monoxide
Incomplete combustion — an appliance that is faulty, badly fitted, starved of air or venting through a blocked flue. It is exactly why flue and ventilation checks matter as much as the appliance itself during an inspection.
Lazy yellow or orange flames where they should be crisp blue, sooty or black marks around an appliance, a pilot light that repeatedly goes out, and more condensation than normal in the room.
Headaches, dizziness, nausea, breathlessness and tiredness that ease when you leave the property and return when you go back. If several people or pets are affected, get out, get fresh air, ring 0800 111 999 and seek medical advice.
Give us the date when you ring and we will work to it.
FAQs
Landlords. Every gas appliance and flue in a rented property must be checked by a Gas Safe registered engineer every 12 months and a record issued. The tenant gets a copy within 28 days, and a new tenant gets one at the start of the tenancy. Owner-occupiers are not legally required to have one.
The same 12-month duty applies, but there are usually more appliances, more tenants and harder access, and HMO licensing conditions from the council may add their own requirements on top. Practically it means booking earlier and planning access properly, which is most of the battle.
That each appliance burns correctly and suits the space, that the flue clears the products of combustion, that ventilation is adequate, that safety devices operate, and that nothing is escaping anywhere on the installation. It is a safety check, not a service — different jobs, though we do both in one visit.
It gets classified by how dangerous it is. Anything Immediately Dangerous or At Risk is turned off with permission and labelled, which is what the warning notice in our gallery is. You get told exactly what was found, what the classification means and what it takes to put right.
Yes, and it is usually easier for everybody. Tell us how many and roughly where and we will schedule them together rather than treating each as a separate call-out.
Common, and frustrating, because the duty stays with you. Document every attempt in writing. We can work evenings or weekends and can attend with an agent or with keys. If it stays blocked, your written record of reasonable attempts is what protects you.
The certificate is issued on the visit and emailed the same day. Booking the visit depends how busy we are, so around student changeover in June and July, give as much notice as you can.
Book it in
Tell us the property or portfolio, how many appliances and how access works. Carried out by a Gas Safe registered engineer and emailed the same day.