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ACS Extension of Scope Training Course - Halifax, Yorkshire - Viva Training Centre

ACS Extension of Scope

Course Duration:

1 Day per Appliance Code

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ACS training and assessment is a necessary requirement of being Gas Safe Registered – all gas installers must be Gas Safe Registered by law. This course adds additional appliance codes to your ACS certificate and allows you, upon completion, to work on these additional appliances within your Gas Safe status.

From £264 inc. VAT


ACS Extension of Scope Course

We offer multiple ACS courses. Our accredited ACS Extension of Scope course is for existing Gas Safe Registered installers who want to expand their product knowledge and add new appliance codes, i.e. MET 1 and ​​CKR1, to their gas ticket. If you are just needing to refresh your ACS and haven’t expired longer than 11 months, then see our ACS Reassessment. If your ACS has expired longer than 12 months you will need to take the ACS Initial Assessment. Reassessment must take place every five years in order for these qualifications to remain valid and you can take your reassessment up to 6 months prior to expiry.

The ACS Extension of Scope course covers four optional appliance codes.

CENWAT: Central Heating Boilers & Water Heaters
CKR1: Cookers
HTR1: Space Heaters (including Gas Fires and Wall Heaters)
MET1: Meters

What does ACS Extension of Scope training entail?

All our ACS training, whether initial, or reassessment, or Extension of Scope is broken down into two parts – theoretical and practical examinations.

The theory-based section is an ‘open book’ question paper; you will also have access to British Standards, IGEM Standards, Technical bulletins, and any other relevant documentation that can be used as references along with the training manual.

Practical examinations are completed in VIVA’s purpose-built ACS training bays.

Call now on 0800 6123177 to book a space

ACS Extension of Scope Benefits

This course is designed for qualified Gas Engineers to expand their appliance codes, expand their current training, and add new work avenues to their business. The benefit of this is you can start working on appliances you did not cover or evidence in your initial Gas Training for e.g. Cookers (CKR1), Meters (MET 1), Central Heating (CENWAT), and Heaters (HTR1).

This means

You will have the potential to work on most domestic gas appliances

You will be able to take on a wider range of install and service jobs

You can diversify your skills and open up your work to less seasonal avenues.

Extension of Scope Requirements & Qualifications

You must provide your previous active ACS Certificate which shows your appliance qualification code(s) and expiry date. You must of been a qualified Gas Engineer for over 12 months before applying for HTR1, CKR1, and CENWAT. You can take the MET1 extension of scope anytime after you initial gas qualification.

Upon successfully completing the course, you will be certified in the appliance code(s) you trained in.

The updated qualification code is added to you NI number. You will need to contact Gas Safe to request a new Gas Safe card which will cost you £13.20 inc. VAT. The average delivery for a card can be 10 days. If you do not request a new card, when your annual renewal happens your new card will automatically have any new code(s) on it.

To find out what this means for you, please contact us at 0800 6123177.

ACS Extension of Scope Location

This Course is based in our Halifax Training centre located close to the M62 with great access from all over the country.

Our purpose built centre offers state of the art classrooms and workshops where you can learn about the different types of gas appliances and codes attributed to them.

We find our students love our facilities so much they are one of the main reasons they keep coming back for further training.

🧭 Viva Training

Extension of Scope Course Pricing

Our Extension of Scope ACS Course costs £264 inc VAT. per appliance code you wish to qualify on. This includes everything you will need during the 1 day* course.

*The course is 1 day per appliance code you wish to train on.

If you want to discuss your payments or your options please get in touch with us via 08006123177.


If you want to stay with us either before or after the 1 day required for the course, we have a number of great affordable hotels and Airbnbs in the area.


Travelodge Halifax

Gate 9, Dean Clough Industrial Park,, Halifax, HX3 5AY

Tel: 08719 846144


Premier Inn Halifax Town Centre hotel

Broad Street Plaza, Halifax, West Yorkshire, HX1 1YA

Tel: 0333 321 9262


Shibden Mill Inn

The Shibden Mill Inn, Halifax, West Yorkshire, HX3 7UL

Tel: 01422 365840


Holdsworth House Hotel

Holdsworth House, Holdsworth Road, Halifax, HX2 9TG

Tel: 01422 240024


For more hotel information, please see our Plan Your Visit page.

This course is for qualified Gas Engineers. To take the ACS Extension of Scope you must provide your previous ACS Certificate which shows your appliance qualification codes and expiry date. You must also have been qualified for a minimum of 12 months.

Of course, you will just need to enter their details above or when you get in touch with us. We will be required to speak to the individual trainee(s) before the course starts to check their ACS status.

All tools and materials needed for the practical examination are included within the price. We will provide everything you need to complete your ACS training. All we recommend is you bring some steel toe-cap boots and work trousers as there is a practical element.

You will be able to work on whichever extra appliance codes you have trained on during the course. All you will need to do is order a new updated Gas Safe Card after they have confirmed the receipt of your new qualifications.

If your ACS has just expired (under 12 months) you will be required to take your ACS Reassessment. If your ACS has expired or you haven’t been trading for over 12 months you will need to take the ACS Initial Assessment, before looking at your Extension of Scope.

What our customers have said

Passed my ACS with Viva, great trainers put me at ease in a relaxed training atmosphere. Roy & Pete are down to earth, helpful and know there stuff. Lindsay was helpful with the paperwork/ portfolio side of the course, which also helped as paperwork isn't my forte.The company they use for placement are also good, made a few new friends and enjoyed the experience with Basi. Would recommend and I will be going back.
Brilliant course, very informative
ASHP course - Very good Will definitely be back for more courses
Top guys and great place
Great place for training with really good facilities. Great communication from admin staff to trainers made the whole process very smooth. Recommended.
Brilliant ASHP course. Excellent training.
Best course I have attended Unlike others which are showroom based don’t touch this or you left mark there.This was actually hands on course Different makes and models were in workshop both live and dead boilers also lots of sensor switches pumps,G valves etc. Pete was excellent made sure everyone understood what were they doing and what outcome or readings they were looking from each test carried out.pete put faults on live Boilers when we were away for break to simulate real world scenarios which was really good.Excellent would really recommend it.
Did the heat pump installation course. Really good and informative. Free brews as well!
Great company very informative and very detailed training on air source heat pumps. Tutor was very good and very helpful all the way
Excellent training
Response from the owner: Thank you for taking the time to post a review for VIVA Training. It was great to have you on the Boiler Fault finding course and we are thrilled to receive your feedback!
Very good course good tutor and learned more than I thought I would.
Great fast pace training, would recommend
Completed my ASHP at viva training. Great atmosphere, trainer very knowledgeable and easy going. Would highly recommend this place. Will definitely be back for any further or on going training.
Did Ashp course, water regs and unvented hot water courses, fantastic place, very knowledgeable and friendly staff, learnt a lot, would deffo come back here for any more training in future.
Response from the owner: Hi Liam,Thanks for the amazing five-star review! We're delighted you had a fantastic experience in the ASHP course and appreciated our knowledgeable, friendly staff. Your enthusiasm fuels our passion for delivering top-notch training.We'd be thrilled to welcome you back for future courses. Remember, we're here to support your growth. Keep shining, and see you soon!Kind regardsAll the Team at VIVA Training
Training on ashpGreat course Peter has been fantastic with the training explained everything clearHighly recommendAndrew lehan
Well worth the journey from London! Thank you Roy you have answered many of my questions I have had for many years. Can’t thank you enough for passing on the knowledge which will massively improve me as an engineer for years to come.David
I would just like to say a big thank you to you and all the training staff, you were all absolutely brilliant , very helpful and the facilities were excellent too. I’ll definitely be back at some point to do the boiler fault finding course and hopefully cookers and fires next year .Once again thanks for everything.Kind regards Rob
Response from the owner: It was a pleasure to put you through your ACS. Wish you all the best in your career and look forward to seeing you back in centre for the fault finding course 🔥
Great facilities and great training
A good place to do the Training for air source heat pump developing skills
Response from the owner: Thank you for your 5-star rating, Shaun! Your support is much appreciated and we’re glad you liked our service.
Brilliant course. Very informative. Excellent tutor.Highly recommended
Amazing course with very knowledgeable trainers. Would 100% recommend viva training & I’ll be coming back for further training myself in the near future
Well what can I say, if you need any of the training I highly recommend viva,Very knowledgeable trainers and great venue. 5*****
Response from the owner: Thank you for rating us highly, Aaron! We appreciate your support. If you ever need any assistance, just let us know!
Very good training centre and learned a lot in a short time.Attended a heat pump course and water regs. Very thorough and smooth at the same time.Very Nice experience.
Excellent fault finding course delivered by Roy, highly recommend.
Response from the owner: Thank you for taking the time to post a review for VIVA Training. It was great to have you on the Boiler Fault finding course and we are thrilled to receive your feedback!
Really informative, staff are friendly and helpful, I would say there is a lot to take in but would recommend viva to any one who wants to start doing the f gas and air source , as you will have a better understanding of how systems work, thankyou viva it’s been emotional 😁👌🏽👍🏽🤩
I attended the course with small knowledge of breakdowns and limited use of a multi meter, by the end of the 3 days I was able to identify faults and prove failed components with relative ease.
Response from the owner: Hi Damon,Thank you for sharing your excellent five-star review! We're thrilled to hear that our Boiler Fault Finding course was able to significantly improve your knowledge and skills in identifying faults and failed components.At VIVA Training, we're passionate about providing high-quality training experiences to help our participants excel in their careers. Your positive feedback and appreciation are greatly valued and motivate us to continue delivering top-notch training.Thank you for choosing VIVA Training, and we look forward to assisting you with any future training needs!Warm Regards,All the Team at VIVA Training
Very professional team!
Response from the owner: Thank you for your 5🌟review, it is appreciated Adela
Would highly recommend. Lovely staff and knowledgable tutors
Brilliant training, I will definitely be back to do my air source heat pump course
Response from the owner: Thank you for taking the time to post a review for VIVA Training. It was great to have you on the Boiler Fault finding course and we are thrilled to receive your feedback!
I came back to do heat pump training ,I already did my gas safe with viva training academy. They been fantastic .would recommend highly.
Fantastic course just completed ASHP and water regs. Brilliant team and facilities.
Great centre for learning and development. 👍
Great training great experience would recommend
ASHP course, Great 3 Days training,Pete was excellent with great knowledge.Well worth the costThanks Viva Training.👍🏻
Response from the owner: Thank you for taking the time to leave a 5🌟🌟🌟🌟🌟review for the Air Source Heat Pump course. It's appreciated 👍👍
Attended ASHP training! Great training and great facilities
Just recently completed a fault finding course with the ever knowledgeable Roy Fugler.I honestly cannot rate this training centre and Roy highly enough!I completed my ACS training with them over two years ago and they were my number one choice when I decided to expand my knowledge around the inner workings of a boiler and how to diagnose the issues that often arise.I will have to re-sit my ACS again in a few years and there’s only one place I’ll be going. It’s VIVA all the way!
Great course, trainer clearly implemented his knowledge to the class making it clear an understandable
V good training
Absolutely wonderful training, very informative and excellent experience

Not sure if this is the right course for you?

Curious what it looks like to pass with VIVA?

Well meet Mohammad, he passed his New Entrants Gas Course with us at VIVA Training and is now back to take further training with us.

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