Gas Safe Register Oftec MCS Certified Trustmark
Call our friendly team today 01258 472132

Water Heater Replacement, Repair & Maintenance

Specialists in commercial water heater replacement, we design and install high-performance systems

Free Water Heater Replacement Quote

Water Heater Replacement, Repair & Maintenance

Our commercial water heater replacement, repair and maintenance services are carried out by fully qualified engineers, ensuring safe, reliable operation and full compliance at every stage. We are WRAS approved and Gas Safe Register registered, with OFTEC-registered engineers for oil-fired systems, giving you complete confidence in the ongoing safety and performance of your hot water installation. We work with leading manufacturers including Ariston, Andrews Water Heaters, Rinnai and Adveco, allowing us to service, repair and replace systems efficiently with minimal disruption. From emergency breakdowns to planned maintenance and lifecycle replacements, we help businesses maintain dependable, energy-efficient hot water year-round.

To speak to a member of our team today on 01258 472132 or Book free no obligation survey

Book your free site survey 01258 472132
Get in touch
Water Heaters image

What our clients say?

Google ReviewsGoogle Reviews

On the numerous occasions I have engaged the expertise of Total Energy, Rob has always been, not only punctual but extremely knowledgeable and ready with a sensible way forward for my needs. His team are very diligent in their workmanship and respectful towards my client's properties. I would recommend Rob and Total Energy Services without hesitation.

William Bowley Ltd
Google ReviewsGoogle Reviews

We have used Total Energy Services for many years, they always respond quickly and efficiently when required, they work in a very professional manner....all in all, they tick all of the boxes!

Cranborne Stone Ltd
Google ReviewsGoogle Reviews

Thank you so much to Rob and his team at Total Energy Services. We got let down at the last minute for our annual commercial boiler service from our previous contractor. I contacted Rob and he responded within minutes, arranging a service at both of our facilities, within a few days. I would highly recommend, the whole team were a pleasure to deal with

Store and Secure
Water Heater Replacement image

Water Heater Replacement

Our commercial water heater replacement service ensures outdated, inefficient or unreliable systems are upgraded safely and with minimal disruption to your business. All replacements are carried out by fully qualified engineers — we are WRAS approved, Gas Safe Register registered, and OFTEC registered where oil-fired systems are in use — ensuring full compliance with current regulations. We specify and install high-performance replacement water heaters from leading manufacturers including Ariston, Andrews Water Heaters, Rinnai and Adveco, carefully matched to your building’s hot water demand. From like-for-like replacements to full system upgrades, we deliver efficient, reliable solutions designed for long-term performance in commercial environments.

Speak to an expert

Working with leading manufacturers

Water Heater Repair image

Water Heater Repair

Our commercial water heater repair service provides fast, reliable support to restore hot water systems and minimise disruption to your business. All repair works are carried out by fully qualified engineers — we are WRAS approved, Gas Safe Register registered, and OFTEC registered for oil-fired equipment — ensuring all repairs are completed safely and in full compliance with current regulations. We diagnose and repair faults across a wide range of systems, working with leading manufacturers such as Ariston, Andrews Water Heaters, Rinnai and Lochinvar. Whether responding to emergency breakdowns or resolving ongoing performance issues, our priority is to restore safe, dependable hot water as quickly and efficiently as possible.

Book a repair

Not sure what you need?

Request a free site survey today

    Call us on: 01258 472132

    Ariston Water Heaters image

    Ariston Water Heaters

    We specialise in the replacement, servicing and repair of commercial Ariston water heaters, supporting businesses with reliable, efficient hot water systems throughout their operational life. Our fully qualified engineers are experienced in maintaining and upgrading Ariston gas and electric water heaters, ensuring systems operate safely, efficiently and in line with current regulations. From planned servicing and fault diagnosis to full system replacements, we provide tailored solutions designed to minimise downtime and extend equipment lifespan. Whether upgrading an ageing Ariston unit or maintaining an existing installation, our expertise ensures dependable performance and long-term reliability for commercial environments.

    Speak to an engineer

    Rinnai Water Heaters

    We provide specialist replacement, servicing and repair for commercial Rinnai water heaters, supporting businesses that rely on continuous, high-efficiency hot water. Our engineers are experienced in working with Rinnai’s advanced gas-fired continuous flow systems, ensuring safe operation, accurate fault diagnosis and long-term reliability. From routine servicing and performance optimisation to full system replacements and upgrades, we help businesses maximise efficiency, minimise downtime and maintain consistent hot water delivery in demanding commercial environments.

    Contact an engineer

    Rinnai Water Heaters image

    Why Total Energy Services?

    Professional

    With over 25 years experience in commercial heating systems, you can rest assured your in safe hands

    Specialist Technicians

    Our engineers and technicians are Gas Safe, OFTEC, WRAS and have undertaken specialist commercial training

    Quick and Efficient Boiler Installations

    Effective solutions that can be installed with minimal disruption

    Andrews Water Heater image

    Andrews Water Heater

    We carry out expert replacement, servicing and repair of commercial Andrews Water Heaters systems, which are widely used across schools, leisure centres, healthcare and hospitality settings. Our engineers have extensive experience working with Andrews gas-fired and high-capacity storage water heaters, ensuring systems remain safe, compliant and reliable. Whether replacing an ageing Andrews unit, responding to a breakdown or delivering planned maintenance, we provide dependable support designed to extend system life and maintain consistent hot water performance.

    Speak to a professional

    Lochinvar Water Heater

    Our team is experienced in the replacement, servicing and maintenance of commercial Lochinvar water heaters and hot water systems, supporting high-demand applications where performance and reliability are critical. We work with Lochinvar’s high-efficiency gas-fired water heaters, providing expert diagnostics, servicing and system upgrades to ensure optimal operation and regulatory compliance. From like-for-like replacements to efficiency-led improvements, our Lochinvar services are tailored to deliver long-term reliability and dependable hot water for commercial buildings.

    Speak to an engineer

    Lochinvar Water Heater image
    Under Sink Water Heaters image

    Under Sink Water Heaters

    We install, replace, service and repair commercial undersink water heaters, providing reliable point-of-use hot water where space is limited or demand is localised. Ideal for staff kitchens, washrooms, offices and small commercial units, undersink water heaters deliver fast, efficient hot water directly at the outlet, reducing heat loss and improving response times. Our engineers assess usage requirements to specify the correct unit, carry out safe replacements of ageing heaters, and provide ongoing servicing to ensure consistent performance and compliance. Whether supporting a standalone outlet or complementing a larger hot water system, our undersink water heater solutions are designed for efficiency, reliability and long-term use in commercial environments.

    Speak to an expert

    Our Coverage image

    Our Coverage

    Total Energy Services provides professional commercial boiler installation, servicing and repair for businesses throughout Dorset, Wiltshire, Somerset and Hampshire, including Blandford Forum, Dorchester, Poole, Bournemouth, Weymouth, Salisbury, Shaftesbury, Yeovil, Christchurch, Wimborne, Wareham and surrounding areas. With over 25 years’ experience in commercial heating and plumbing systems, our team supports a wide range of commercial properties, including schools, medical centres, hospitality venues and industrial buildings.