Safety & guidance

Gas safety

You may have gas appliances in your home – these must be installed, used and maintained correctly. Here's our top tips on household safety, what we are responsible for, and what you need to do.


Understanding gas safety

Gas appliances such as boilers, cookers and gas fires are safe when they burn fuel correctly. 

If your gas cooker has a crisp blue flame it means it is burning fuel efficiently and safely. Whereas a yellow or orange flame can indicate incomplete combustion and a carbon monoxide risk.

Warning signs of an unsafe appliance include:

  • a floppy, yellow or orange flame
  • soot, scorch marks or black residue around the appliance
  • increased condensation on windows
  • a strong smell of gas
  • a carbon monoxide (CO) alarm sounding

Unsafe appliances can cause carbon monoxide poisoning, gas leaks, fires, or explosions. If you notice any of the signs above, act immediately and follow the emergency guidance below.


What should I do... in a gas emergency

If you smell gas or suspect a leak, take the following actions straight away:

  • call the National Gas Emergency Line on 0800 111 999
  • turn off your gas appliances (if it is safe to do so)
  • do NOT switch lights or electrical appliances on or off
  • do NOT smoke or use naked flames
  • open windows and doors to ventilate the property
  • leave the property immediately and wait outside
  • if there is fire, explosion or immediate danger, call 999
  • do not return to your home until you are told it is safe to do so

What should I do... if my carbon monoxide (CO) alarm sounds

  • call the National Gas Emergency Line on 0800 111 999 immediately
  • turn off all gas appliances (if it is safe to do so)
  • ventilate the property by opening windows and doors
  • leave your home immediately
  • if anyone is feeling unwell, call 999 for medical assistance
  • do not re-enter the property until advised it is safe to do so

If the issue relates to any Watford Community Housing appliance, we will arrange for a Gas Safe registered engineer to visit.


Gas concerns

If you are worried about a gas smell, appliance issue or ventilation problem, contact the National Gas Emergency Service on 0800 111 999. Please note down your reference number and provide it to us as this allows us to get a copy of your report.


Our responsibilities as your landlord

Watford Community Housing has legal duties to keep you safe. We will:

  • carry out an annual Gas Safety Check (LGSR) on all landlord-owned gas appliances
  • ensure all engineers entering your home are Gas Safe registered
  • repair or address issues or unsafe defects with landlord-owned boilers, chimneys and heating systems in a timely manner
  • keep detailed records of all inspections and certificates
  • act in accordance with The Gas Industry Unsafe Situations Procedure where an unsafe situation is identified and make safe any ‘At Risk’ or ‘Immediately Dangerous' appliances 
  • provide and replace carbon monoxide (CO) alarms in line with legal requirements

These safety checks are a legal requirement and must be carried out every year.


Your responsibilities as a resident

You also play an important role in keeping your home safe. You must:

  • maintain and service any gas appliances that you own, such as cookers or gas fires - make sure any manufacturer-specific tests are carried out as part of the servicing process
  • ensure all gas work you arrange is carried out by a Gas Safe registered engineer
  • after any safety check or service, ask for a Gas Safety Record. Keep it for your reference and send a copy to us for our records
  • follow any safety advice given during a gas safety visit
  • take action to repair, disconnect or replace resident-owned appliances marked as 'At Risk'
  • provide access to your home so our engineers can carry out the annual mandatory gas safety check
  • never tamper with boilers, gas meters, flues, vents or pipework
  • if your appliance is over ten years old, consider replacing it with a modern model featuring safety devices, like flame failure protection

Failure to repair or replace any of your appliances marked 'At Risk' or 'Immediately Dangerous' could result in the appliance being disconnected at your next annual gas safety check. 


Please note that portable flueless appliances are not permitted under your tenancy terms and conditions.

They state that you must not use or store any petrol, paraffin, liquid petroleum, calor gas heaters or other highly flammable materials. 

The only exceptions include usual household goods (e.g. for lawnmowers, barbecues etc.) or items required for medical reasons, which you must notify us about in writing.


Servicing your appliances

At least once every 12 months, a Gas Safe registered engineer will visit your home to inspect your gas system and landlord-owned appliances - this is called a Gas Safety Check (LGSR). This check ensures:

  • gas is burning safely and efficiently
  • appliances are correctly installed and adjusted
  • safety devices are working properly
  • flues, chimneys and ventilation systems are functioning correctly
  • there is no risk of gas leaks or carbon monoxide exposure

Please note that this check can be carried out up to two months before the due date without changing the original renewal date. This flexibility allows us to align checks for multiple appliances or properties, making the process smoother and reducing the need for multiple appointments.

You will receive a copy of the LGSR certificate once the check is completed.


If you own gas appliances (such as a cooker or gas fire), we strongly recommend you arrange an annual service. Regular servicing helps prevent carbon monoxide leaks, dangerous combustion, potential breakdowns during cold weather and blocked or unsafe flues. If a resident-owned appliance remains unsafe, we may disconnect it at your next service appointment to keep your household safe.


Gas supply alterations

If you want to change your existing gas supply, or install a new gas appliance (including flueless appliances), you must request this through our formal application for alterations process. 

You can find our form here. 

This is essential in order to ensure compliance with safety regulations and maintain the integrity of the gas system. Unauthorised alterations or connections pose serious safety risks and may result in removal if not approved first.


Carbon Monoxide safety

Carbon monoxide (CO) is a deadly gas that you cannot see, smell or taste. It can build up without warning.

Symptoms of carbon monoxide poisoning include persistent headaches, dizziness or weakness, nausea or vomiting, shortness of breath, confusion or tiredness, chest or muscle pain, collapsing or falling unconscious.

Symptoms often worsen indoors and improve when you go outside. If multiple people or pets are affected, treat this as a CO emergency.


Your carbon monoxide alarm is one of the most important safety devices in your home.

You should:

  • test the alarm once a month
  • never remove, cover or relocate the alarm
  • check the battery if the alarm beeps regularly
  • report faulty landlord-provided detectors immediately

Get winter ready

To reduce winter breakdowns and stay warm:

  • keep your boiler pressure topped up
  • insulate outdoor pipes to prevent freezing
  • check your outside condensate pipes during cold spells
  • understand how to use your thermostat and heating controls efficiently
  • report issues early rather than waiting for extreme weather


Chimney works

Chimneys and flues in older homes may contain asbestos materials.

You should request a management asbestos survey before any inspection, cleaning, or servicing of chimneys in buildings built before 2000, and especially before 1980.

For any significant chimney renovation, removal, or appliance install, you must get a refurbishment/demolition asbestos survey first.

If you do not have a copy of the asbestos survey for your home, please contact us before any work begins so we can provide this information.


Need some extra support?

We offer additional help for residents who may need extra support, including those who are elderly, disabled, living with long-term health conditions, and those struggling to arrange access for engineers.

Available support includes:

• flexible appointment times

• help with access or arranging a trusted person to be present

• extra notes on your tenancy record

• assistance from your Housing Officer

Contact your Housing Officer if you need additional support