Kassgas Ltd


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.

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.

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.

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.

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.


We can help with any general plumbing work from emergency leaks to outdoor tap installation with callouts starting from £40.

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.

Cooker Installation

Our gas cooker installations start from only £60 and 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.


Boiler Finance

We have two boiler finance options available – 12-24 month interest free and 2-10 years 9.9% APR representative. All can be supplied and fitted within 24 hours once acceptance has been confirmed.

New Boiler Installations

Are you looking for a new boiler installation ? Here at Kassgas we install all brands of boiler including Ideal boilers, Worcester Bosch, Vaillant and Baxi plus many more. Our mission is to bring unrivalled customer service into the boiler installation and gas industry without the hefty price tag. From our homepage you can get a new boiler installation quotation below, plus details on all the services that we currently offer.

Alternatively, check out our amazing 5 Star Customer Reviews.

Our most popular boiler installations

24kw – 35kw
5 Year Warranty
25kw – 36kw
10 Year Warranty
25kw – 30kw
5+ Year Warranty

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 by a minimum of £75.

Boiler Repair

Starting from £50 inc VAT for the first hour and a detailed and honest run down of further costs afterwards, 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

At £60 inc VAT, 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


Our Happy Clients!

Matt and Chris were great! They fit us in last minute for a new boiler, were quick, super friendly and did a great job. They explained how to work everything, and even popped back to sort a glitchy thermostat free of charge. Thanks guys, would recommend!
Kayleigh Bertram
I called Kassgas last week who visited and confirmed that my boiler had had it ! Matt was great and offered me a very reasonable price to fit a new one. It’s all done now and working perfectly and I’ve got a 10 year guarantee. Would definitely recommend Kassgas if you have any heating or boiler problems.
Colin Ord

Contact Us Today

Contact Details

Location :

1 Netherfield View, Rotherham, S65 3RB

Email :
Phone :

0330 058 9419

Gas Safe Registered

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.


1 Netherfield View,
S65 3RB


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

*Kassgas Ltd, company number 11765642 is an Introducer Appointed Representative of TradeHelp. Our firm reference number is 925968. TradeHelp is a trading style of Tradehelp Ltd, Marchwiel Centre, Bryn Lane, Wrexham Ind Est, LL13 9UT, registered in England (03712438), authorised and regulated by the Financial Conduct Authority (firm reference number 697812). TradeHelp are a credit broker, not a lender, and offer loans from a small panel of carefully selected lenders. TradeHelp do not offer financial advice and do not charge you for credit broking services. All loans are subject to status.
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