Call Us On 07979 677209
Call Us On 07979 677209
Trusted experts in Porth and across South Wales for boiler installation, servicing & air conditioning. Over 15 years’ experience, Gas Safe registered, and 100+ 5-star Google reviews
At MJB, we make heating and cooling simple, modern, and reliable. From new installations to servicing, our focus is on efficiency, comfort, and long-term value. We combine expert knowledge with a customer-first approach so every job is done right, the first time.
With training from British Gas and experience across all major boiler brands, we’re trusted by homeowners and businesses across Rhondda and South Wales. Our mission is simple: reliable service, fair prices, and work done right the first time.
Heating and cooling specialists in South & West Wales – trusted for boilers, servicing and air conditioning.
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Tell us about your boiler or air conditioning needs and get a quick, no-obligation quote.
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Choose a date that works for you. Our certified engineers will arrive on time, fully prepared, and ready to get the job done.
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Whether it’s a new boiler or energy-efficient air conditioning, relax knowing your home is running safely and efficiently.
At MJB Servicing Ltd Heating and Cooling, we specialise in reliable, efficient heating and cooling solutions across Rhondda and South Wales. From new boiler installations to modern air conditioning systems, our Gas Safe and F-Gas certified engineers deliver expert service you can trust.
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Every MJB Servicing Ltd customer experience reflects the trust and expertise behind our heating and cooling services. Their feedback isn’t just praise—it drives us to deliver smarter, more efficient solutions and keep homes and businesses in Porth comfortable all year round.
At MJB Servicing Ltd Heating & Cooling, we specialise in keeping homes and businesses in South Wales servicing areas from Cardiff, Newport, Swansea and beyond comfortable, safe, and energy-efficient all year round. With over 15 years of industry experience and training from British Gas, our team has worked on nearly every make and model of boiler and air conditioning system.
Many WAIs offer extended guarantees on new Worcester Bosch boilers, sometimes up to 12 years, when a system filter is also installed.
WAIs can provide professional advice and suggestions tailored to your needs.
These installers are recognized for their high-quality workmanship, ensuring safe and efficient installations of Worcester Bosch products.
Worcester Accredited Installers must meet rigorous standards at all times.
They are required to register with the correct governing bodies, Gas Safe for gas and OFTEC for oil.
Each installer also completes Worcester Bosch Logic certified training, keeping their skills and knowledge fully up to date.
Accreditation is not a one-off badge.
Worcester Bosch regularly reviews the status of its installers, checking registrations and training records.
This ensures every accredited installer continues to meet the highest levels of safety, compliance, and professionalism.
Safe, compliant setups for caravans and mobile homes.
Keep your caravan legal and secure with certified inspections.
Routine servicing to keep your system running smoothly.
Fast call-outs when something goes wrong.
Trusted by homeowners and businesses across Porth, The Rhondda Valleys and South Wales. Get in touch today and let’s keep your property comfortable, safe, and efficient.
We’re based in Porth, Rhondda Cynon Taf, and cover all of South and West Wales — including Cardiff, Swansea, Newport, Bridgend, Barry, and Llanelli. Whether you need a new boiler installation or air conditioning system, our engineers travel across the region to deliver reliable service.
Yes! we’re Gas Safe Registered, Worcester Accredited, Haier Pro Certified, and F-Gas & Refcom Registered for complete peace of mind.
Yes, we offer flexible finance options to make upgrading your heating or cooling system more affordable. Whether you’re replacing an old boiler or installing new air conditioning, you can spread the cost with easy monthly payments.
Get in touch for more details or to check eligibility.
For best performance and safety, we recommend:
Boilers: Once a year — ideally before winter.Air Conditioning Systems: Once a year, typically before summer.
Regular servicing helps maintain efficiency, prevents costly breakdowns, and keeps your manufacturer warranty valid.
We work with all major boiler and air conditioning brands, including Worcester Bosch, Haier, Ideal, Vaillant, and Baxi.
As Worcester Accredited Installers, we can offer extended guarantees — sometimes up to 12 years — when a system filter is fitted.
Yes! We provide both domestic and commercial air conditioning installations. From single-room cooling to multi-zone systems, our team delivers efficient, quiet, and modern climate control solutions across South Wales.
We provide rapid response call-outs for urgent heating or cooling issues. Whether your boiler has stopped working or your air conditioning has failed during a heatwave, our engineers aim to restore comfort quickly and safely.
With over 15 years of experience, 100+ 5-star Google reviews, and training from British Gas, MJB Servicing Ltd is trusted across South Wales for reliable, professional heating and cooling services.
Our focus is simple — fair prices, expert workmanship, and comfort you can count on all year round.
It’s easy — just fill out our contact form or give us a call on 07979 677209. We’ll provide a no-obligation quote tailored to your home or business needs.
Get a free, no-obligation quote and enjoy year-round comfort in your home or business.
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