Gas Safety Certificates for Landlords and Homebuyers

Gas Safety Inspections  & Certificates

for properties in London, Watford, Hertfordshire and Middlesex

Gas Safety Certificates for Landlords

In London, Watford, Hertfordshire and Middlesex locations

If your a landlord renting out property then you should know it’s a legal requirement to obtain annual landlord gas safety certificates (CP12) for all gas appliances and flues used within your rented accommodation.

This certificate is awarded upon the successful completion of a gas safety check, to make sure gas fittings and appliances are safe to use by tenants, which can only be carried out by a registered Gas-Safe engineer.

Consequences of No Gas Safety Certificate

The consequences of not having gas safety checks and certificates are very serious as should non-compliance lead to death from carbon monoxide poisoning or due to unsafe gas appliance supply or gas leaks, the landlord could be charged with the criminal offence of manslaughter.

Also, failure to produce a valid certificate can result in the following:

  • Prosecution
  • Invalidation of property insurance
  • Liability for expensive claims
  • Heavy fines

Landlord Obligations

A copy of the gas safety certificate must be given to a tenant within 28 days of issue and the tenant should retain this for two years from the point of testing. This retention period will ensure compliance and proof of a landlord’s legal gas safety requirements.

Gas Safety Certificates for Landlords and home buyers
Landlord Gas Safety Certificates

Gas Safety Certificates for Homebuyers

Get peace of mind when selling or buying a home with a gas safety certificate.

IF YOU’RE A SELLER: A gas safety certificate removes doubt from potential purchasers to the suitability of the gas installation

IF YOU’RE A SURVEYOR OR CONVEYANCER: Your clients may need gas installations tested prior to purchasing a property

IF YOU’RE A BUYER: discover gas supply defects prior to purchase so you can obtain an estimated cost of boiler repair or new boiler installation (and perhaps get more leverage on negotiations)

Get peace of mind, knowing that a professional gas safety engineer has provided a thorough gas inspection.

Gas safety certificates can be issued for a number of gas appliances including:

Central Heating Systems

Gas Boilers

Gas-powered Ovens

Gas fires

Gas Cookers

Gas Safety Certificate Inspections for Boilers & Gas Appliances

Our Gas-Safe engineers are qualified to carry out safety inspections and checks on boilers and central heating systems, as well as write up ?Home Buyer? reports. Our Gas safety inspections include:


Central heating system tightness gas leak tests


Gas appliance tightness checks


Standing and working pressure at meter and appliances


Burner pressure and gas rate checks against manufacturer data


A review of adequate ventilation


Flue flow testing for combustion product removal


Confirmation that flame failure devices are fully operational


Boiler system defect checks


Checks for unsafe operation or installation


Flue installation and ventilation standards compliance

Gas-Safe Registered Engineers

Our qualified plumbers are Gas-Safe registered to carry out inspection checks. They carry identification (ID) and are fully uniformed. You can trust us to carry out gas safety inspections and plumbing work in a friendly, professional manner – at all times.

To obtain a gas safety inspection certificate or to book a gas inspection, please contact us today.

If you?ve already had a gas safety check carried out and your gas appliance has failed, one of our specialists will be happy to advise you on the best course of action to take and the options available to you.

How it works:

We agree a date and time to suit your schedule.

We will call you when our gas-safe registered engineer is on their way, so that you can be ready for their arrival.

Our engineers will arrive at the agreed time, show identification and be wearing our official Advanced Heating & Plumbing uniform.

We will answer any questions and give you our expert advice throughout the whole process.

We know that having strangers in your home can be uncomfortable, so we’ll do our best to put you and your family at ease.


Ongoing Annual Gas Safety Certificate Inspections

If you would like to discuss ongoing annual gas safety certificate inspections, please let the engineer know and he will provide a no-obligation quote.

If you’re without hot water or heating and urgently need an electric boiler repaired or a new system installed, please contact us – we can have an engineer with you same day, at a very competitive cost. We will talk you through your options, offer expert advice or provide a quotation that’s easy on your pocket

Booking a Gas Safety Check is Easy with Us

In London, Watford, Hertfordshire and Middlesex locations

Get a Quote

Use the online quote button or call us free. Tell us what the problem is. We'll quote you a price and get your agreement to proceed.

Get the work done

We'll take your address details and come at a time to suit you. We carry a range of common spare parts so we can usually get things working with one visit.


Get on With Your Day

Carry on enjoying your day in the happy knowledge that your repairs are done and everything is working smoothly in your home.

Approved installers & Repairers for:

Approved Vaillant installer logo
Approved Viessmann installer logo
Approved Worcester Bosch installer logo
Approved Stuart Turner installer logo
Approved Elson installer logo
Gas Safe registered logo


I used AHP to do my annual Landlord’s gas safety certificate. Tony was punctual, efficient and a very pleasant person. If there were any little issues, he resolved them quickly (this year, bleeding the radiators, last year sorting out a minor issue about the flue). Highly recommended.
Kate Sawyer

I was impressed with the professionalism of Tony.
Deirdre Taylor

Tony also serviced and mended my old boiler (old in 1990) until parts were impossible to find, always fast, accurate, and successful in keeping it going until 2013. I was most impressed when he also rang the gas board because of poor pressure and made sure that they would come out ans fix things too (I got a new meter).

C A Davies

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Locations Served

London, Watford, Herts, Middx & surrounding

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