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Non-Domestic Gas Safety Certificate

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Non-Domestic Gas Safety Certificate in Hertfordshire in Knebworth

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Domestic Non-Domestic (shops, offices, warehouses etc)

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Gas Safety Certificate Boiler Service Special Offer - Boiler Service + Gas Certificate Boiler Repair Boiler Service & Repair

Number of Gas appliances:

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Meter & 1 appliance Meter & 2 appliances Meter & 3 appliances Meter & 4+ gas appliances

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Number of Gas appliances:

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Boiler service & 1 appliance Boiler service & 2 appliances Boiler service & 3 appliances Boiler service & 4+ gas appliances

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Gas Certificate CP17 LPG Boiler Service Special Offer - Boiler Service + CP17 Special Offer - Boiler Service + LPG

Number of Gas appliances:

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Meter & 1 appliance Meter & 2 appliances Meter & 3 appliances Meter & 4+ appliances

Number of LPG appliances:

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1 LPG appliance 2 LPG appliances 3 LPG appliances 4+ LPG appliances

Number of Gas appliances:

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Boiler service & 1 appliance Boiler service & 2 appliances Boiler service & 3 appliances Boiler service & 4+ appliances

Number of LPG appliances:

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Boiler service & 1 appliance Boiler service & 2 appliances Boiler service & 3 appliances Boiler service & 4+ appliances

Are any of your gas appliances a gas fire?

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Yes No

Does it have backboiler?

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Yes No

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Is there any issue with your boiler?

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Yes No

Which of the following best describes your issue?

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No HeatingNo Hot WaterBoiler Making Noises (kettling effect)Display error codesLow pressurePump, valves & burner problemsBoiler ignition faultsFaulty circuit boards (PCB)Timer & programmer troubleBoiler LeakingThermostat issuesOther

The Engineer will diagnose the problem, and carry out repairs, all within the hour. If additional parts & labour are required, they will be quoted separately onsite.

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14 results

THR Gas and Heating Solutions

4.8

Fully accredited Gas Safe engineers with years experien...Read Morece with British Gas as lead technical support engineer.Install, upgrade, service and repair all types of gas appliances and central heating.FREE quotation provided for a new boiler on request and up to 10 years guarantee on all boiler installs.System upgrades such as smart controls and designer radiators.Landlord gas safety certificatesCooker/Hob or Fire installation or service/repairFriendly, knowledgeable, trustworthy, reliable, gentle, Non-smoker/alcoholic, and always happy to offer advice. Please inquire now to get your boiler service/repair or replace.All work is under up to 1 year guarantee (T&C apply). £5 million liability insurance cover. Show less

141 hiresSame day Gas Safety

Excellent service at a very reasonable price.

Keith Munemo

4.9

Friendly and reliable Gas Engineer for your servicing n...Read Moreeeds and Landlord Gas Safety Checks, same day certificates. Boilers, Cookers and Fires covered. Show less

106 hiresSame day Gas Safety

Polite and good explanation of what was happening

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Get instant prices and book a date & time that suits you!

Property by AK

4.7

132

Hiya, Property by AK welcomes you, we are a team of reg...Read Moreistered gas engineers & electricians over 7 years experience in heating & and electrical work, feel free to reach out and we can help! Hope to see you soon! Show less

375 hiresACCRED No: 663775+1

Suresh is excellent, highly recommended!

Conrad Marais

4.5

I’m an experienced domestic gas engineer providing boil...Read Moreer installations, servicing, and repairs. I’m committed to safety, reliability, and customer satisfaction, always aiming to deliver efficient solutions and clear communication from start to finish. Show less

135 hiresSame day Gas Safety

Very professional , helpful and committed engineer.High...Read Morely recommended Show less

Kazim Hussain shah

4.6

576

Gas engineer land lord certificate, boiler and gas Hob ...Read Morealso can do insulation of boiler and Radator vented cylinders I can also serivce heat pumps Show less

2481 hiresACCRED No: 935264+1

Nothing all good

Mubbashar Ali

As a qualified Gas Safety Specialist, I provide profess...Read Moreional gas safety inspections, servicing, and certification for residential properties. With extensive knowledge of current UK gas safety regulations and industry best practices, I am committed to ensuring every installation is safe, compliant, and operating efficiently. I specialise in Gas Safety Certificates (CP12), boiler service, appliance safety checks, and landlord compliance services. My approach is built on reliability, attention to detail, and exceptional customer service, giving homeowners and landlords complete confidence that their gas systems meet the highest safety standards. Dedicated to maintaining quality workmanship and protecting lives through safe gas practices, I take pride in delivering accurate assessments, clear advice, and prompt, professional service on every job. Show less

1 hires

Arminas Janciauskas

4.9

Gas safe engineer covering Harlow and surrounding areas...Read More Show less

220 hiresACCRED No: 943378+1

Very efficient

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Certs & Repair

4.3

Qualified EICR engineer with extensive experience in in...Read Morespecting, testing, and certifying electrical installations for safety and compliance. I specialize in conducting Electrical Installation Condition Reports (EICRs) for residential properties, ensuring all systems meet current regulations and standards. With a strong attention to detail and a commitment to safety, I identify potential hazards, provide clear recommendations, and help clients maintain reliable and compliant electrical systems. Show less

80 hires

Good

EPC Specialist

4.7

Gas ,EPC, Electrical Certificates Experienced domestic...Read More electrician carrying all types of domestic electrical installations and electrical inspection and testing (EICR) Show less

362 hiresACCRED No: 636076

Very happy with the work carried out. It was completed ...Read Moreahead of schedule and exactly to my specifications. Will use again. Show less

ELC Boilers

4.7

Starting a new venture after working for British Gas as...Read More a service and repair engineer for 10 years I am qualified to work on all domestic gas appliances. Show less

81 hiresACCRED No: 674405

Very impressed with the excellent service provided . W...Read Moreouldn't hesitate to recommend H for anyone needing Gas services . Show less

PENTHOU53 Ltd

4.9

We take great pride in our workmanship which is of the ...Read Morehighest standard, we focus on offering a quality service maintaining the safety and reliability of your gas boiler and your central heating system. Show less

132 hiresACCRED No: 629946+1

Excellent.

zafar mahmood

4.7

At ZMS Services, we specialize in comprehensive heating...Read More and plumbing solutions with a focus on safety and efficiency. As a Gas Safe Registered specialist, I provide a wide range of essential services including: Emergency Call-Outs & Repairs Gas Safety Certificates (Landlord Checks) Boiler Installations & Heating System Maintenance Power Flushing & Fault Finding General Plumbing & Green Energy Solutions With a focus on quality workmanship and clear communication, ZMS Services ensures your home stays warm and your water stays flowing. Professional, reliable, and always ready to help. Show less

6 hires

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Pedro Mcleod

4.8

Certified domestic Gas Safe engineer specializing in CP...Read More12 Gas Safety Inspections and Landlord Certificates. Experienced in ensuring compliance, and delivering reliable, safety-focused solutions for residential properties. Show less

6 hires

Great

Khalid Hussein

4.9

Experienced gas services technician specializing in ins...Read Moretallation, maintenance, and safety compliance. Committed to reliable, efficient, and safe solutions for residential and commercial clients. Show less

3 hiresACCRED No: 5780693

Excellent

Accredited & Trusted Service Providers

Trustpilot

11015

Reviews

39716

Hires

Hazel B.

5.0

Very fast reliable and good value for money

September 07, 2026 Verified

Stephen D.

5.0

September 07, 2026 Verified

Stuart M.

5.0

Would to Kai. Very thorough and completed all safety checks during my boiler service . Really pleased and will use him in the future for any repairs and my next service

September 07, 2026 Verified

Sophie W.

5.0

September 07, 2026 Verified

Tim G.

5.0

September 07, 2026 Verified

Lee S.

5.0

Very happy with boiler service. Jamie was friendly and professional.

September 06, 2026 Verified

Reega R.

5.0

He’s a legend and great service

September 06, 2026 Verified

Yvonne H.

5.0

Very helpful!

September 06, 2026 Verified

Leionie P.

5.0

Great guy brilliant job

September 05, 2026 Verified

Syed A.

5.0

Fast, efficient and professional as always (have used them before).

September 05, 2026 Verified

Vikas P.

5.0

Vishal was very good and did a thorough service. Explained everything clearly. Definately recommend Vishal for any boiler works

September 04, 2026 Verified

Claire L.

5.0

Kept me informed throughout especially when we needed to order a part.

September 03, 2026 Verified

Yega K.

5.0

September 03, 2026 Verified

urmila p.

5.0

Great service

September 03, 2026 Verified

Neeraj G.

5.0

September 02, 2026 Verified

Julia W.

5.0

Denis is highly professional and punctual. The engineer completed the gas safety inspection efficiently and provided clear, helpful feedback. Excellent service, highly recommended.

September 02, 2026 Verified

Karen P.

5.0

Andrew, carried out all that we needed, he was quick and efficient.Thank you Andrew

September 02, 2026 Verified

Ibrahim A.

5.0

September 02, 2026 Verified

Alena G.

5.0

Very lovely professional

September 01, 2026 Verified