Kassgas Ltd

Boiler Installation, Servicing & Repairs in Sheffield, Rotherham, Barnsley & Doncaster | Kassgas South Yorkshire

New Boiler Installations

Gas Cooker Fitting

Boiler Repairs

Commercial Gas Services

Kassgas – Your Local Heating, Plumbing & Gas Experts

📍 Serving South Yorkshire 🛡️ Gas Safe Registered 🏠 Family-Run Team

Kassgas is your trusted local heating and plumbing specialist for boiler installations, servicing, and repairs across Sheffield, Rotherham, Doncaster, Barnsley, and the wider South Yorkshire area.

We’re a family-run team known for delivering reliable, affordable heating and plumbing solutions. We treat every home with the same care we would our own.
Our customers choose us for our friendly service, fast response times, and clear, upfront pricing, with no hidden costs or unexpected surprises.

Get a free, no-obligation quote for your new boiler installation today!

Ready to start? Use the buttons below to get your quote online or speak with our expert team immediately.

Our Services

Boilers

Installation, servicing & repairs. Fast solutions for every home or business.

Commercial

Safety checks and heating systems for all commercial premises.

Gas Fitting

Safe, certified cooker and hob installations by Gas Safe engineers.

Expert installers of Ideal, Worcester Bosch, Vaillant, and Baxi

Price-Match Guarantee
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New Boiler Installation

Our boiler installations can be fitted within 24 hours and all come with a minimum 5 years warranty up to a maximum 12 years. We install 7 days a week to work around your needs and apply no extra cost to weekends.

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Boiler Servicing

We follow manufacturer instructions on all boiler services to comply with your boiler warranty and if a fault is found we can usually repair the same day. Boiler servicing is a must for any homeowner, ensuring your boiler is fully functional and efficient.
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Boiler Repairs

Boiler repair can be costly and lead to further issues in the future when undertaken incorrectly.Our engineers follow strict checklists to ensure that any faults with on a boiler are found efficiently and repaired without issue.
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Power Flush

Using specialist equipment, your pipework and radiators will be flushed at high pressure to remove debris and get your radiators and central heating back to maximum efficiency. Commonly used when a system has cold radiators.
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Landlords / Letting Agents

Offering emergency callouts, discounted rates and direct contact between tenant and engineer, we specialise in keeping tenants, landlords and letting agents happy. Contact us directly for details on our offers.
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Plumbing

We can help with any general plumbing work from emergency leaks to outdoor tap installation.

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Smart Thermostat

Installing a smart thermostat in your home can save on your heating bills drastically over a 12 month period, giving you full control over when and how your home is heated. We can install any smart thermostat you desire including Nest, Hive, Honeywell Evohome and many more.
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Cooker Installation

Our gas cooker installations comply with all safety regulations. Moving house? We can remove your cooker in one property and install it in another on the same day, including weekends.

Commercial Gas

Commercial Gas Services

We provide comprehensive Commercial Gas services including installation and maintenance of gas equipment, thorough safety inspections by Gas Safe registered engineers, and energy efficiency solutions to help you save money and reduce your environmental impact. 

Our most popular boiler installations

Kassgas Price Match​​

We beat any like for like boiler quotation.

We will beat any like for like quotation for a boiler
installation as long as it fully complies with all relevant regulations. Simply provide us with a valid quotation for the same service and we will beat it.

Boiler Repair

Our boiler repair service can get your broken boiler back up and running in no time. If your boiler is beyond economical repair, we can offer new boiler installation quotations and will deduct the cost of our visit from your quotation.

Boiler Replacement

We provide installations at some of the lowest prices in Sheffield, Rotherham, Barnsley, Doncaster and other surrounding areas. Call us on 0330 058 9419 or fill in the contact form and one of our Gas Safe Engineers will be in touch, please let us know the best times to contact you on the message section.

Annual Boiler Service

Our boiler servicing comes with a full, industry standard check of your combi boiler or system boiler. We will offer recommendations to prolong the life of your boiler and provide advice on any action that may be needed to keep your boiler running for years to come.

Why Choose Us

We put customer service and satisfaction above all else. Listening to your needs and doing everything in our power to ensure you are fully happy with everything we do. So if you’re looking for a plumber or heating engineer for your next project, why not give us a call.

We are a small family run business with your best interests at heart
We work 7 days a week to ensure maximum flexibility for you and your home

Our excellent customer service is second to none, check out our reviews here

Reviews

Our Happy Customers!

Rated 5 out of 5

We rang Kassgas on Wednesday afternoon. By Thursday afternoon we had a new boiler. Billy fitted our boiler, he was extremely polite and tidy he even took his shoes off each time he came into the house. Not enough words to praise him enough, he took time to explain how to work the new boiler and controls to two pensioners.
Billy and Matt were about to leave when we mentioned that our stop tap was leaking, they stayed behind and fit a new one. It was heartwarming to meet two young men who didn’t want to rip us off.
We would and already have spread the word about this company.
Neil & Sue

SueH-976

Rated 5 out of 5

 

Billy and Matt just installed a new boiler. They recommended Ideal with a 12 year warranty. They turned up on time within a week of providing a very good quote. they removed the old boiler, installed the new one, flushed the radiators, added inhibitor, installed new halo wireless thermostats and checked everything was working ok in the space of 5 hours. They removed all the rubbish and left a very tidy finish.
I would definitely recommend themWould definitely recommend Kassgas if you have any heating or boiler problems.

Eric Jones

Contact Us Today

Contact Details

Location :

91 Davy Road, Doncaster, DN11 0ZA

Email :
Phone :

0330 058 9419

Gas Safe Registered
629149

We are a Heating and Plumbing business based in Rotherham and Chesterfield. Our aim is to create a partnership for life with all of our customers by providing only the best customer service paired with honest and fair pricing.

Contact

91 Davy Road, Doncaster, DN11 0ZA

Call Us On : 

0330 058 9419

Email Us At :

office@kassgas.co.uk

Hours

Mon-Fri: 7:00am – 7:00pm
Sat: 9:00am – 5:00 pm
Sun: 10:00am – 2:00pm

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