Frequently Asked Questions

Mr Sweep’s Stove Shop based in Rettendon, Essex, are specialists in providing a warm welcome for your home.

If it’s the first time you have looked at installing a stove or you are interested in getting your stove serviced, or a chimney swept then we’re sure you have plenty of questions. Following are some of the more common questions but always feel free to call us on 01245 400 370 and we’ll be happy to answer any questions you may have.

Mr Sweep provide an all in one service from choosing your ideal stove to installing it in your home and then offering annual maintenance to keep everything top tip.

Mr Sweep provide free design quotations to suit all budgets.


No. In 99.9% of homes stoves/wood burners can be installed without the need for a traditional chimney. We can use a system call Twin Wall, which does the same job as a chimney. It also means you have more options of where you can locate your fire.

Open fires are just not efficient. In most cases for every £1 spent on fuel 0.80p goes directly out of the home.

With log burners the opposite is true. Every £1 spent on fuel will give you 0.80p of direct heat. It is THE BEST way to heat your home.

Yes, in most cases a correctly installed appliance will reduce your fuel bills. I am proud to say all of my customers save at least 50 % on their gas bills by using the stove on a regular basis and sometimes even more.

Yes. A working fireplace is something estate agents comment on. A quality, professionally installed log burner, can help to sell the property, but can actually add to the property’s value as it is classed as a home improvement, and a heating upgrade.

Yes. However, unless you are a HETAS registered engineer your installation will not be insured and if anything goes wrong you will not be insured. I often ask people “would you install your own gas boiler?”

No. This is my most often asked question. I am sure your builder is competent and good at what he does. However, unless he is a qualified HETAS engineer, he is should not install your burner. It could result in you having to pay again to have your stove re-installed by a HETAS engineer. The regulations are updated on a regular basis and a HETAS engineer is required to attend regular training events to ensure that they are fully aware of any modifications and updates regarding the installation of wood burning stoves. If your stove has not been certified by a HETAS , then it is unlikely to be covered by your house insurance.

No. They will not have the expertise to do so. They may ask a HETAS engineer for an opinion, however you will not get a full certificate. This may mean you could lose value on your home, as the buyer may not trust the installation. (Would you?)

No, provided you use a HETAS qualified engineer, your installation will be safe insured and certified.

You must have your chimney swept annually. If you use coal in your burner it is recommended that you have it swept every 3 months during the “burning season”

Yes homes built before the 1960s will always need a liner. This is due to the flue being built only 1 brick wide. Over time the mortar between the bricks disintegrates leaving holes and gaps. Modern stoves put an enormous amount of heat through the chimney, without a liner in place this hot gas can leak through the chimney into the home. They must be lined.

It’s not compulsory. However if you want your stove to work better, last longer, and get up to heat in moments, with maximum efficiency then you should consider lining your chimney

Lining your chimney does several things. Firstly it creates an additional safety barrier inside your chimney. This means the chimney gets warmer quicker. Once your chimney is warm your stove gets the heat into the room quicker. This means your fuel bills are reduced even further. We often attend homes with pot lined chimneys only to find that they are not fixed in place and can easily be lifted apart. Having a liner will mean that hot flue gas cannot get into the home. It is much safer and cost efficient to have your chimney lined

Yes, the liner means that you will have less surface area to heat up. Also because they are made from stainless steel they get up to heat much quicker, this in turn means the log burner warms the room faster.

This prevents rain getting inside the flue and making the stove rust. It also stops birds form getting inside the liner. This can be a distressing event for both the home owner and the bird.

YES YOU DO. Log and multi fuel burners produce much more carbon monoxide that gas boilers. Coal and wood are pure carbon. Having an audible alarm fitted correctly is a must,

* Always test your alarm.

* Never leave your alarm below the appliance.

A HETAS engineer will provide advice and guidance and install your alarm.

What fuels can I use?

Fact is it does not matter too much. As long as the wood is seasoned and dry either is fine. Hardwood tends to burn longer than soft wood and “spits” less. Softwood has a higher resin content therefore can “spit” more.

If you have stored your logs under cover they should be dry enough to burn, however you can buy a moisture tester for about £20.

Word of mouth is the best advice for this, ask around. Local established tree surgeons tend to be able to supply good quality logs. Always ask for seasoned logs.

Chimney maintenance and cleaning

No. Although having your chimney swept can be a dirty job, we take great care NOT to make any mess or any damage. We carry dust sheets and state of the art industrial vacuums designed with safety and cleanliness in mind.

No. 99% of chimneys are swept from the bottom up.

Yes, chimney sweeps carry a £1m plus public liability insurance.

Yes, we provide a written, dated duplicate certificate for every sweep.

Yes. We will conduct a “smoke test” before issuing a certificate. This is to make sure your chimney is venting correctly.

No. I am sure your friend or neighbour probably knows what he is doing, however your insurance company will not accept any liability for his work.

Yes most sweeps belong to organised bodies.


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