About us

Local heating engineers since 1978

Based in Dalkeith, working across Edinburgh and the Lothians.

The Limitless Heating team standing with their vans
Our story
48+Years of experience
19,000+Satisfied customers
6,100+Boilers installed

Trusted for plumbing and heating in Dalkeith since 1978

Our roots in Dalkeith go back to 1978, and we still work from the same premises we have called home ever since.

Over the decades, the business has carried out everything from small repairs in local homes to major plumbing and heating projects across Edinburgh and the Lothians. That experience has shaped the way we work today: professionally, reliably and with a strong emphasis on doing the job properly.

In 2017, the business was incorporated as a limited company, and in 2024 we rebranded as Limitless Heating Ltd. Many long-standing customers will still know us as Melville, Whitson & Muir. The name has changed, but the experience, people and local roots behind the business remain.

Today, Limitless Heating combines that history with the structure of a modern heating company. We have our own registered engineers, a dedicated office team and the capability to handle everything from routine plumbing and servicing to boiler installations and larger projects.

A word from the directors

“We believe high standards come from the people you employ, the culture you create and the example you set.”

Between us, we have decades of experience in plumbing and heating, and that experience shapes how we run Limitless Heating.

We look for people who take pride in their work, communicate well and want to keep improving. Technical ability is important, but attitude matters just as much. We both stay closely involved in the business and expect the same high standards from ourselves as we do from everyone in the team.

We also believe that experienced tradespeople have a responsibility to bring the next generation through. We are committed to taking on apprentices, giving them the right guidance and helping them develop into skilled, confident and fully qualified engineers.

Setting high standards, investing in good people and creating a team that takes real pride in their work, provides a solid foundation for future business and staff growth and continued success.

Allan Melville's signature Allan MelvilleManaging director
Chris Muir's signature Chris MuirOperations director
Our values

What we stand for

Humility

However long you have been in the trade, there is always more to learn. We listen before we talk, respect everyone we work with, and let the work do the talking.

Reliability

Our reputation has been built over decades, one job at a time. Being dependable is not something we do now and again. It is who we are, every day.

Integrity

Doing the right thing, even when nobody would know the difference. We would rather be honest than tell people what they want to hear.

Meet the team

The people behind Limitless Heating

Allan Melville, managing director at Limitless Heating
Allan MelvilleManaging director
Chris Muir, operations director at Limitless Heating
Chris MuirOperations director
Steven Sives, senior engineer at Limitless Heating
Steven SivesSenior engineer
Ryan Lindsay, oil engineer at Limitless Heating
Ryan LindsayOil engineer
Kevin Gilmer, gas engineer at Limitless Heating
Kevin GilmerGas engineer
Kenzie Maclaughlan, plumber at Limitless Heating
Kenzie MaclaughlanPlumber
Danni McCaskell, customer service at Limitless Heating
Danni McCaskellCustomer service
Kaiden Hutchison, 2nd year apprentice at Limitless Heating
Kaiden Hutchison2nd year apprentice
Liam McLean, 1st year apprentice at Limitless Heating
Liam McLean1st year apprentice