HETAS registered installer since 2013
GTD logo

HETAS Installer based in Hitchin, Hertfordshire

Installing Woodburners in Herts, Beds & Bucks

01462 431910

GTD Installations Ltd

Surveys and Quotes

We aim to provide a clear estimate of the works needed after one free site ground survey. Further site surveys and roof surveys involving ladders will be chargeable. Free surveys are only available on days that we are in your area already. Quotes are usually sent out 3 days after the survey.

Terms and Conditions

"Efficient, professional, local & friendly service" - Hayley in Herts


HETAS Certification.

We will clean all flues required to industry standard and install flue liner and stoves to HETAS standards and building regulations and will provide a HETAS installation certificate after completion. You will not need to apply for seperate planning permission. Certification can only be provided for installations that we complete ourselves. Please do not ask us to certify work that you have done yourself or through a building company.

Get yearly reminders for your chimney sweep
Completing the work


Where possible we will complete the work in the time allotted in a tidy and professional manner. However adverse weather conditions may prolong an installation as we need safe access to the chimney from the roof if a flexible liner is to be installed.

We are fully insured for damage to you or your property at all times. We expect you to respect our safety and not to touch or move any of our equipment.

Work that cannot be completed or needs additional work due to unforeseen issues will be discussed with the customer or person on site before proceeding.

"I would always recommend GTD Installations Ltd to my friends" - Pauline, Shefford

Smoke Exempt areas need Smoke exept or DEFRA approved stoves

Electronic messaging

We provide an online message system on our website. We cannot be held responsible if our return email or quotation does not reach the customer due to incorrect data entered into the message box or details provided at the site survey. We ask that the customer adds office@chimneysweep.info to their 'safe senders' list or checks their junk or spam folders if a quote does not arrive. 

If we do not receive confirmation that you have received your quotation we will contact you by email or text in case the email is in your spam or junk folder. Read our Data Privacy Policy.

Look at our free standing stove gallery
Woodburner install survey

“Thank you for going the extra mile” – Mrs T in Hertfordshire

Future proofing

Staying Safe

To ensure that your chimney or flue is cleaned regularly and thus safe to use, we will contact you to arrange a chimney sweep through our sister company Cleansweep Vac Services, one year later. We prefer to contact you by email but may use text (SMS) messaging if we do not hold your email details.

We recommend that customers use a stove pipe thermometer so that they do not overburn their appliance. We believe that this will prolong the life of the stove.

We do not recommend the use of smokeless fuel, unseasoned wood nor burning household rubbish in your appliance with a 316/316 stainless liner and cannot be held accountable if you decide to burn this without discussion prior to install and this causes the liner to degrade faster than expected. For Smokeless coal use, have a 904 / 904 liner installed.



Regular Maintenance

We will install the stove/ flue to industry standards and cannot be held accountable for any health issues caused by misuse of the appliance, poor maintenance or blocked flue issues. We may contact you annually to remind you that your annual sweep and check-up is due, however it is the householders responsibility to have the flue cleaned regularly. Book a sweep online now. 

Depending on what you burn and how often, this could be 3-4 times per year. For Multifuel stoves, Log burners and open fires, with a liner or twin wall pipe, burning; Smokeless fuel sweep once every year when you stop using your fire for the Summer; Seasoned wood only sweep when you stop using your fire for the Summer and then after three months when you start using it every day. Bitumous Coal; sweep when you stop using your fire for the Summer and then half way through the burning season. More information on sweeping.


Read our question and answer page
Quotations and deposits
HETAS Certification
How long to install a woodburning stove
Contact us
Future proofing
Annual maintenance

Securing a date

A deposit must be received at least 3 weeks before the start date. Until the deposit is received the date reserved may be given to another customer. If the installation is cancelled after the deposit is paid, the deposit will not be fully refunded. The last quotation provided to the customer before the deposit is paid, will be the works agreed to. Agreement to proceed must be recieved by email before a date can be secured. 

Gas stove installation.

We are not Gas Safe Engineers and can only install gas woodburners by utilising a separate GAS SAFE engineer. We will quote for our part of the installation but you will  need to organise the gas engineer with which we will liaise.


Payment is expected once the work is complete upon the day of completion. For work completed at the weekend payment is expected in cash or cheque or electronic transfer on the next working day.

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