Call us : 079 1337 0126
Opening hours : Mon-Fri 8am -5pm
Call us : 079 1337 0126
Opening hours : Mon-Fri 8am – 5pm
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FAQs2022-06-10T16:25:35+00:00

Frequently asked questions.

Frequently asked questions.

We work with homeowners and tenants in London to fit boilers, full heating systems, kitchens and bathrooms plus gas checks and certification (CP12) providing the very best service at the very best value.

Coronavirus

Has Gosai Heating and Gas’s covid-safe protocols changed since restrictions were lifted on July 19, 21?2022-06-09T17:31:29+00:00

Most covid regulations, such as mask wearing and social distancing, were scrapped on July 19, 2021. We have committed to continuing all covid-safe measures after reviewing our working practises. This is done to protect staff and customers while also allowing customers to feel safe in their own homes. We will update the website as soon as this changes.

Will an engineer come to my home if anyone in our household is self-isolating?2022-06-09T17:39:12+00:00

Yes, we would attend if you are self-isolating because someone in your household is vulnerable. However, if someone in the house is exhibiting covid-19 symptoms or is isolating themselves due to contact with someone who has tested positive for covid-19, we are afraid we will be unable to attend. Your health status will be requested at the time of booking as well as by the engineer during their  pre- visit call.

What can I do to keep visiting engineers safe?2022-06-09T17:45:51+00:00

We will always ask you to confirm whether anyone in the house is experiencing symptoms at the time of booking and during the engineer’s pre-visit call. We request that you be forthcoming about this so that our engineers do not take unnecessary risks. Please assist us in keeping our working practises safe. This includes staying at least 2 metres away from the engineer at all times and cleaning the  area before he arrives (eg the boiler or toilet).

Plumbing

How do I check the water pressure in my house?2022-06-09T17:52:37+00:00

You can test your own water pressure if you believe it is too low (bath takes a long time to run, shower has little power, etc.). Get yourself a timer and a 1-2 litre jug (you can usually find one on most smartphones). Set the timer for 6 seconds, then pour water into the jug until the timer goes off. Now multiply the volume of water in litres (say, 0.9 litres) by 10. This gives you the flow rate in litres per minute (0.9 litres in 6 seconds equals 9 litres per minute, for example). Flow rates of less than 10 litres per minute are considered low. 10 – 15 litres per minute is sufficient but could be increased. More than 15 litres per minute is regarded as satisfactory. There are steps we can take once you’ve confirmed your water pressure and determined that it could be improved. Please call us at  079 1337 0126 for more information.

How do I isolate a leaking tap or toilet?2022-06-09T18:06:42+00:00

Look underneath for the isolation valve and turn the central ball a ¼ turn  with a flat headed screw driver, ie with the flat headed screw driver in line with the pipe the valve is open / across the pipe the valve is closed. It will not drip or leak again until you arrange for a plumber to investigate and repair the problem.

What should I do if I discover a leak in my home?2022-06-09T18:15:17+00:00

The first thing you should do if you have a leak is turn off the water by finding and turning off the stop tap. This will keep water out of the house and reduce damage. Then, unless you’re handy, you should usually call an emergency plumber. Meanwhile, look for the source of the leak, which could be a burst pipe, a faulty tap, a weak pipe joint, or a faulty sink or toilet. While you wait for the plumber, use old towels and sheets to absorb as much water as possible. We will always try to return your call the same day. If you have a leak, please contact us as soon as possible at 079 1337 0126

My stop tap is difficult to reach. What should I do?2022-06-10T11:22:44+00:00

If you can’t easily access your stop tap or it’s difficult to turn, a Sure Stop, which is a remote stop tap that can be installed in an accessible area with a simple switch rather than a turn, is a solution.

How do I get rid of a hot water air lock?2022-06-10T11:26:04+00:00

Place your hand over the mixer tap’s end, then fully open the hot and cold taps, forcing the cold water mains up the hot feed pipe and pushing the air lock up into the tank to vent. Remove your hand from the mixer tap and turn off the cold water to see the hot water flow again.

Boilers

How often should I have my boiler serviced?2022-06-10T12:09:23+00:00

We strongly recommend servicing your boiler on an annual basis for several reasons: it keeps it running efficiently; it can detect potential problems early and allow you to take corrective action before they become a bigger (more expensive) problem; it meets the terms of most manufacturer warranties (if it is still within the specified time frame); it keeps it safe, reducing the risk of carbon monoxide leakage, which could be fatal; and it vastly reduces the risk of idling. You can save money by scheduling your boiler service during the summer.

Do you offer Boiler Servicing?2022-06-09T17:31:35+00:00

Yes we offer annual boiler servicing and we strongly recommend that your boiler is serviced annually for a number of reasons: it keeps it running efficiently; it can detect potential issues early and allow you to take remedial action before it becomes a bigger (more expensive) problem; it meets the terms of most manufacturer warranties (if it is still within the specified time frame); it keeps it safe, minimising the risk of it leaking carbon monoxide which could be deadly; it vastly reduces the risk of it breaking down. You can reduce the cost of servicing your boiler by having it done in the summer.

Are all of your installers qualified to fit a new boiler and central heating system?2022-06-09T17:31:47+00:00

Every single member of our boiler installation team is Gas Safe registered and has had all of the correct training.

What boiler brands do you fit?2022-06-09T17:31:54+00:00

We work with multiple boiler manufacturers including; Valliant, Baxi, Main and Potterton. We will work with you to get the right boiler for your home and budget.

What information do you need to know about my house to install a new boiler and fit a central heating system?2022-06-09T17:32:06+00:00

To make sure we fit the right size boiler for your home we will need to know;
How many radiators do you have?
How many bathrooms do you have?
How many rooms are in the house?
Do you have double-glazing?
Are you planning to build an extension to your house

How Often Should I Replace My Boiler?2022-06-09T17:32:13+00:00

In general the lifespan of a boiler is about 10 to 15 years. While this is an average, your boiler may last longer if you take care of it well.

You should decide to replace your boiler when repairs become too expensive or start mounting up. Opting for a new boiler at this point should save you money in the long run.

Our expert engineer can help you decide on the right time to replace your boiler.

Do your engineers carry PPE?2022-06-09T17:32:33+00:00

Yes they do. They have all been equipped with gloves, hand sanitiser and masks. Gloves will be changed for every job and hand sanitiser used in between. Government guidelines do not require tradespeople to wear masks but they have been provided and can be worn at the engineers’ discretion.

Heating

What information do you need to know about my house to install a new boiler and fit a central heating system?2022-06-09T17:32:06+00:00

To make sure we fit the right size boiler for your home we will need to know;
How many radiators do you have?
How many bathrooms do you have?
How many rooms are in the house?
Do you have double-glazing?
Are you planning to build an extension to your house

Are all of your installers qualified to fit a new boiler and central heating system?2022-06-09T17:31:47+00:00

Every single member of our boiler installation team is Gas Safe registered and has had all of the correct training.

The radiators aren’t getting hot. So, what should I do?2022-06-10T11:29:53+00:00

This could indicate that sludge is present in your central heating system. As a result, radiators may fail to heat properly or develop cold spots (eg they are often cold at the top and warm at the bottom). Using a power flushing service is the most common solution.

My boiler makes a kettling sound. What’s the problem, and what should I do?2022-06-10T11:35:40+00:00

Limescale buildup from hard water is the most common cause of a ‘kettling’ noise in a boiler. This mineral builds up in the heat exchanger, restricting water flow and causing the water to boil and evaporate into steam, which expands. This is what you’re hearing. It is possible to resolve the problem by replacing the heat exchanger, powerflushing the system, or adding an inhibitor to the system. The best course of action should be determined by a qualified heating engineer.

How often should I have my boiler serviced?2022-06-10T12:09:23+00:00

We strongly recommend servicing your boiler on an annual basis for several reasons: it keeps it running efficiently; it can detect potential problems early and allow you to take corrective action before they become a bigger (more expensive) problem; it meets the terms of most manufacturer warranties (if it is still within the specified time frame); it keeps it safe, reducing the risk of carbon monoxide leakage, which could be fatal; and it vastly reduces the risk of idling. You can save money by scheduling your boiler service during the summer.

Is it really necessary to service a boiler once a year?2022-06-10T12:14:14+00:00

Yes, an annual service is always recommended. If you do not service it every 12 months, you risk missing early warning signs of potential problems, invalidating your warranty, becoming unsafe without your knowledge, and becoming inefficient, all of which will cost you more money. An unserviced boiler is more likely to fail at some point and is more expensive in the long run than an annual service. You’ll save money if you service it during the summer.

When do I need to bleed my radiators?2022-06-10T12:29:49+00:00

Bleeding radiators removes excess air from them. This air will keep the radiators from heating up evenly. It’s a good idea to bleed your radiators in the autumn as you prepare to turn on the heating after the summer, and you should definitely do it if they start to make a noise when warming up or if they have cold spots.

What is the best way to bleed my radiators?2022-06-10T12:31:22+00:00

The following are the five main steps to bleeding your radiators: 1. Turn off the heat; 2. Locate the bleed valve and key; 3. Open the bleed valve by inserting the key and turning anticlockwise; 4. Close the bleed valve; 5. Restart the heat.

Does my central heating system need power flushing?2022-06-10T12:42:40+00:00

Your system needs power flushing if it has a build-up of sludge. Radiators not heating up properly, some radiators heating but not others or cold spots, such as cold at the top and warm at the bottom, are all indications that this is the case.

What can I do to keep my boiler in good working order?2022-06-10T12:54:11+00:00

To keep your boiler running efficiently, have it serviced once a year; add inhibitor; install a magnetic filter; bleed your radiators; turn on your boiler for short periods of time on a regular basis during the summer; powerflush; and lag outdoor pipes.

Why are my radiators hot on top and cool on bottom?2022-06-10T13:00:53+00:00

This could indicate that your central heating system contains sludge. As a result, radiators may not heat properly or experience cold spots (eg they are often cold at the top and warm at the bottom). The most common solution is to use a power flushing service.

How can I keep my condensate pipe from freezing?2022-06-10T13:05:37+00:00

Your condensate line may freeze in cold weather. To insulate the pipe from the cold, clad it. DIY shops sell pipe lagging. If it freezes, thaw it yourself.

Drainage

How can I tell if my drains are Blocked and where the blockage is?2022-06-10T14:17:41+00:00

Because drainage pipes are underground, determining if they are blocked up can be difficult. Sinks and toilets that do not drain properly, high water levels in outside drains, and foul odours coming from the drains are all indicators of a problem, but the only way to be certain is to have a drainage survey performed. This entails inserting a camera into the drain to determine what is causing the problem. We can then pinpoint the precise location of any blockage as well as the causes of that blockage, allowing us to address it.

What are the most common causes of blocked drains?2022-06-10T14:01:44+00:00

Sewers only collect water from toilets, sinks, baths, and showers, as well as human waste and toilet tissue. Everything else should be thrown away.

Frequently, blockages are caused by:

Solidified fat, oil, and food scraps in pipes
Wet wipes, sanitary items clog your pipes, even if they are labelled “flushable.”
Sanitary items include things like towels and tampons.

My drains seem to be blocked. Is this my responsibility, or that of my water providers?2022-06-10T13:51:42+00:00

It depends on where the blockage is: is it within or outside your property’s perimeter? In general, you are responsible for the upkeep of your property’s pipes and drains, which include toilets, sinks, baths, and showers, as well as any guttering and pipes attached to your property. You are also in charge of the underground section of pipe that connects your property to the public sewer. Thames Water’s website does contain some useful information. It is your responsibility to keep them in good working order and to fix any problems that may arise if they become blocked. Thames Water is in charge of dealing with issues with public sewers and the pipes that connect the properties on the street.

If you are unsure where the problem is, contact Thames Water, who should be able to assist you.

Gas

What exactly is the difference between a gas safety check and a service?2022-06-10T15:57:46+00:00

A gas safety check evaluates the basic safety of your home’s gas appliances. Its purpose is to ensure that everything is working properly and safely.

A safety check may include, but is not limited to, the following:

  • Checking that gas appliances are burning properly and at the proper operating pressure
  • Ensure that harmful gases are safely removed from the appliance and released into the environment.
  • Ensure that ventilation routes are clear and adequate.
  • Ensure that all safety devices are operational.

A service will include a full check of a gas appliance, as well as the checks listed above:

  • Follow the manufacturer’s instructions and perform the following equipment-specific actions:
  • Cleaning requires the removal of components.
  • Serviceable parts such as seals and gaskets are replaced.
  • Cleaning the heat exchanger as well as any flueways
  • Examine the appliance’s physical condition.
  • Examine the condition of any air vents and flues to ensure they have not deteriorated.
  • Perform combustion performance tests (where applicable) to ensure the appliance’s safe and efficient operation.
  • Carry out any necessary corrective action (your engineer will inform you of any additional costs)
  • Notify you of any problems discovered during the service.
Landlords, do I need to have gas appliances in my rental properties inspected for safety?2022-06-10T16:08:02+00:00

Yes. Landlords are required by law to have an annual safety check performed on all gas appliances and flues owned by the landlord in their properties.

It is also a legal requirement to keep gas appliances, flues/chimneys, and pipework in good working order. In the case of appliances, this usually entails following the manufacturer’s instructions. A Gas Safe registered engineer must perform both checks and servicing.

How can I tell if an engineer is qualified to perform a gas safety check?2022-06-10T16:16:05+00:00

A Gas Safe ID card is issued to all registered engineers. This serves as identification, confirms their current registration with the Gas Safe Register, and details the work they are qualified to perform. Each ID card bears a distinct licence card number. You can verify their information by using the Gas Safe online check an engineer service. You can also reach check by phone at 0800 408 5500.

Remember that all registered engineers will have a valid ID card and should be willing to show it to you for verification. We strongly recommend that you check their identification before allowing them to work on your gas appliances.

Is the safety check record still valid if it does not include the Gas Safe Register logo?2022-06-10T16:18:57+00:00

Yes, the Gas Safe Register logo is not required on a landlord’s gas safety record.

Do I have to provide a CO alarm to my tenants?2022-06-10T16:35:59+00:00

There is no legal requirement in England and Wales for a CO alarm to be installed in rental properties with a gas appliance. However, we strongly advise landlords to install audible CO alarms in residential properties.

The only legal requirement for CO alarms in England and Wales is found in the Building Regulations and applies to solid fuel appliances that burn wood, coal, and so on.

The Smoke and Carbon Monoxide Alarm (England) Regulations 2015 went into effect on October 1, 2015. Private landlords are required to install at least one smoke alarm on each floor of their properties, as well as a CO alarm in any room where solid fuel is used. Landlords must ensure that the alarms are operational at the start of each new tenancy.

With the exception of cooking appliances, the Scottish Building Standards require the installation of a CO alarm whenever a new gas appliance is installed.

A change was made to the Housing (Scotland) Act in 2014, which went into effect on December 1, 2015, requiring private landlords to install a CO detection system in all properties they rent out where:

The property contains a fixed combustion appliance (other than one used solely for cooking).
A fixed combustion appliance is housed in a connected space, such as an integral garage.
A bathroom combustion appliance that had to be installed (the current guidelines advise they should be located elsewhere if possible). The CO alarm should be placed outside the room as close to the appliance as possible while taking into account the effect that humid air may have on the detector when the bathroom door is open. This is true for ALL fuels.
CO alarms are required in Northern Ireland when a new gas appliance is installed. This has been in effect since October 31, 2012, and no further changes are currently planned. This requirement is from Technical Document L of the Northern Ireland Building Regulations, which has been amended to include CO protection, and states:

“Wherever a combustion appliance is installed in a dwelling, reasonable provisions must be made to detect and warn of the presence of CO gas at levels harmful to people.”

When buying CO alarms for your rental property, make sure they meet British Standard EN 50291 and have a British or European approval mark, such as a Kitemark.

Be aware that CO alarm standards are much stricter now than they were a few years ago, so if you have older alarms, you should consider replacing them. Always follow the manufacturer’s instructions on how to properly install the alarm and how to check the batteries on a regular basis.

Do gas engineers have to be Gas Safe registered?2022-06-10T16:40:18+00:00

Anyone performing gas work must be registered with the Gas Safe Register by law. The Gas Safe Register works tirelessly to keep the public safe. They employ a team of investigators to track down engineers who are working illegally, and they also inspect Gas Safe engineers on a regular basis.

Customer Care

Why doesn’t my home insurance pay for the repair of my boiler?2022-06-10T17:05:16+00:00

Why doesn’t my home insurance pay for the repair of my boiler? Home emergency plans cover a wide range of problems and emergencies that can happen with home appliances. Each policy is a little bit different, and you have to meet certain conditions. These can include the age of your boiler, how well it is maintained, how well it was installed, how much you can claim, and how long you have to wait before you can claim for the first time. These are different for each policy. So before you buy one, you should always read the fine print.

Can I supply my own repair parts?2022-06-10T16:48:34+00:00

We strongly advise that the parts for the repairs that we perform be supplied by us. This is due to the fact that it allows us to guarantee the quality and origin of the parts (we only use genuine manufacturer parts from suppliers that we know and trust). However, we would allow customers to supply parts if they signed a disclaimer stating that we would not be held liable for the performance of those parts or any subsequent problems caused by them.

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