Call Us On 07979 677209
Call Us On 07979 677209
Trusted by 100+ customers across South Wales
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At MJB Servicing, we deliver reliable heating and cooling solutions for homes and businesses across Merthyr Tydfil and nearby valleys.
Whether you’re along the Heads of the Valleys Road, around Pentrebach, exploring Cyfarthfa Park, or up in Cefn-coed-y-cymmer, our certified engineers are never far away — keeping your home warm in winter and cool in summer.
With 15 years’ experience and over 100 five-star reviews, MJB Servicing is a trusted local name for boilers and air conditioning across Merthyr and the Valleys.
When the valleys get cold, you need a heating system you can rely on. Our Gas Safe engineers handle everything from quick fixes to full replacements.
Our boiler services include:
If you’re near Cefn-coed-y-cymmer, Troedyrhiw, or Penydarren, we can usually attend the same or next day.
Need a local boiler expert in Merthyr? Book your service today.
Our F-Gas certified engineers install and maintain energy-efficient air conditioning systems across Merthyr, including Cefn-coed-y-cymmer, Aberfan, and Dowlais Top — perfect for year-round comfort.
Our air-con services include:
Thinking about air conditioning near Pentrebach or Cyfarthfa Park? Get your free quote today.
We also maintain LPG systems for caravan parks, mobile homes, and off-grid properties across the Merthyr and Cynon Valleys.
Services include:
Ideal for sites and properties around Pontsticill, Abercanaid, and Vaynor.
Heating stopped? No hot water?
Our local engineers are available 24 hours a day, 7 days a week across Merthyr and nearby communities.
Emergency services cover:
Need urgent help? Call our 24/7 line for immediate support.
As a Worcester Bosch Accredited Installer, MJB Servicing can offer up to 12 years’ extended warranty on selected boilers — giving you extra peace of mind and long-term cover.
Ask about extended warranty options when booking your new boiler installation.
We work with small businesses across Merthyr, Pentrebach, and Dowlais, providing dependable heating and cooling solutions.
Keep your workspace comfortable and compliant with MJB Servicing.
At MJB Servicing, we specialise in delivering efficient, reliable, and modern climate solutions across Merthyr. Whether it’s upgrading to an energy-efficient Worcester Bosch boiler or fitting a new Haier Pro air conditioning system, our goal is simple: comfort, safety, and value.
With training from British Gas and hands-on experience across all major brands, our engineers complete every job to the highest standards.
Serving Merthyr Tydfil County Borough and nearby areas, including:
Cefn-coed-y-cymmer, Cyfarthfa Park, Dowlais Top, Troedyrhiw, Pentrebach, Aberfan, Pant, and Vaynor.
If you’re near the Retail Park in Pentrebach, visiting Cyfarthfa Park, or travel via the Heads of the Valleys Road, we’re right nearby.
Yes — we cover the entire Merthyr area day and night for emergencies.
Absolutely — we offer 24/7 repairs for homes and small businesses.
Yes, we have flexible payment options on new boilers and AC installs.
Every 12 months to maintain efficiency and safety.
Yes — we provide Gas Safety Certificates (CP12).
If it’s under 10 years old and a minor fix, repair it.
If older or unreliable, replacement saves on running costs and repairs.
We’ll advise honestly and quote free of charge.
It depends on your boiler’s age, condition, and repair cost.
If your boiler is under 10 years old and the fix is minor, a repair usually makes sense.
But if it’s over 12–15 years old, breaks down often, or parts are hard to find, replacing it with a new, energy-efficient model can save you money long-term — both on repairs and gas bills.
Our engineers will always give honest advice and a free quote so you can make the best decision for your home.
Ready to book your heating or air conditioning service in Cardiff? Get in touch today.
Upgrade your home or business with Cardiff’s trusted heating and air conditioning experts. From new boilers to modern AC systems, our certified engineers have you covered. Call our Cardiff team today or request your FREE, no-obligation quote online.
Get a free, no-obligation quote and enjoy year-round comfort in your home or business.
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