Oil heating specialists · Edinburgh & the Lothians
Oil boiler installation
New and replacement oil boilers, including oil combi and external models, fitted by our OFTEC registered oil heating engineers. Ryan, our specialist oil engineer, has worked on oil boilers across the Lothians for 20 years.
- OFTEC registered
- New & replacement oil boilers
- Internal, external & combi models
- Free onsite survey
Get your oil boiler quote
What we do
Oil boiler installation & replacement
We install and replace oil boilers for homes that rely on oil heating. Our own OFTEC registered engineers do the work, from survey to commissioning. We can help with:
- Replacing an ageing oil boiler before it lets you down
- Replacing a boiler that has failed
- Upgrading an existing oil heating system
- Fitting a new oil boiler
- Moving an oil boiler where the property allows
- Assessing what your existing oil system needs
Types of oil boiler
Internal, external and oil combi boilers
Oil fired boilers come in more shapes than people expect. We fit all three, and the free survey works out which suits your home.
Internal oil boilers
Floor standing boilers for a kitchen, utility room or garage. Compact models fit under a worktop.
External oil boilers
Fitted outside in a weatherproof casing. Frees up space indoors and keeps the noise outside. Ideal where there is no room inside.
Oil combi boilers
Hot water on demand with no cylinder, the same idea as a gas combi. Available in internal and external versions.
Oil boiler cost
How much does a new oil boiler cost?
There is no single price for a new or replacement oil boiler. It depends on your property, the boiler you choose, whether it sits inside or outside, and the work involved, so we quote for the actual job rather than a one size fits all figure. The main factors:
Boiler model and output
The boiler that suits your home and how much heat and hot water it needs to produce.
Like for like or a change
Swapping a boiler in the same position is usually simpler than changing the installation.
Boiler location
Inside or outside, and whether the boiler is staying put or moving.
Pipework and flue
What can be reused, what needs renewing, and where the flue has to go.
Heating controls
Whether your thermostat and controls are staying or being upgraded with the boiler.
System condition and access
The state of the wider heating system, any modifications it needs, and how easy the job is to get to.
Your oil engineer
Meet Ryan, our specialist oil engineer
Oil heating is a specialism, and Ryan has spent 20 years in it across East Lothian, Midlothian and West Lothian. Many of our oil customers have known him for years. He looks after the same boilers year after year and explains what yours needs in plain terms.
- 20 years on oil boilers across the Lothians
- OFTEC registered
- Surveys, installations and servicing
Why OFTEC matters
OFTEC registered oil boiler engineers near you
Oil heating requires specialist knowledge. If you are looking for an oil heating engineer near you, our OFTEC registered engineers install and replace oil fired boilers for homes across East Lothian, Midlothian, West Lothian and Edinburgh, from our offices in Dalkeith and Dunbar.
- Registered for oil boiler installation and commissioning
- Boiler, tank, fuel line and flue checked as part of the job
- Commissioning paperwork completed and left with you
OFTEC registered
Registered for oil boiler work, with our own engineers on every job.
Boiler options
Choosing your new oil boiler
We are Worcester Bosch accredited installers and fit their Greenstar oil boiler range. Both models below come in internal and external versions, and we recommend the model and output once we have seen your home.

Greenstar Danesmoor Utility

Floor standing regular or system oil boiler. For homes with a hot water cylinder.
- A-rated and quiet
- Fits under a kitchen counter, or outside
- Three sizes, 18 to 32 kW
- Up to 7 year manufacturer guarantee

Greenstar Heatslave II

Oil combi boiler. Hot water on demand, no cylinder needed.
- The UK’s best-selling oil boiler
- Instant hot water, quiet in use
- Sizes from 12 to 32 kW, indoors or out
- Up to 7 year manufacturer guarantee
Why us
Why choose Limitless Heating?

OFTEC registered
Registered for professional oil heating work.

Worcester Bosch accredited
Accredited installers of their oil boiler range.

Trusted Trader registered
Rated 4.9 from 400+ customer reviews.
20 years of oil boiler experience
Our specialist oil engineer, Ryan, has worked on oil boilers throughout the Lothians for 20 years.
Local heating engineers
Based in Dalkeith and Dunbar, serving homes across Edinburgh and the Lothians.
Free onsite survey
We come out, check the whole system and give you one fixed price quote in writing. No obligation.
What our customers say

“What a difference. Very professional, and especially careful to meet our needs and situation. Excellent.”
Good to know
Oil boiler installation FAQs
How much does a new oil boiler cost?
It depends on the boiler, your property and the work required, so there is no single figure for a new or replacement oil boiler. Use the online quote tool at the top of this page, or call us on 0131 660 1480, and we will give you a tailored fixed price quote.
Can you replace my existing oil boiler?
Yes. We assess your existing system and what the installation needs, then quote for the replacement.
Are you OFTEC registered?
Yes. Limitless Heating is OFTEC registered for oil boiler work.
Do you install new oil boilers?
Yes. We install new oil boilers as well as replacing existing ones.
Can you get an oil combi boiler?
Yes. An oil combi boiler heats water on demand with no hot water cylinder, the same as a gas combi. We fit the Worcester Bosch Greenstar Heatslave II, which is available in internal and external versions.
Can an oil boiler be fitted outside?
Yes. External oil boilers sit outside the house in a weatherproof casing, which frees up space indoors and keeps the noise outside. Both the Danesmoor Utility and the Heatslave II come in external versions. We will tell you at the survey whether inside or outside suits your home.
Which oil boiler brands do you install?
We are Worcester Bosch accredited installers and fit their Greenstar oil boilers. If your current boiler is another make, such as Grant, Warmflow or Firebird, we can still quote to replace it.
Can you move an existing oil boiler?
Often, yes. It depends on the property and what the new position needs in terms of pipework and flue, so we assess it first.
What size oil boiler do I need?
It depends on your home’s heating and hot water requirements. We size the boiler for your property rather than guessing from a chart.
Do you install oil boilers in Edinburgh and the Lothians?
Yes. We are based in Dalkeith and Dunbar and install oil boilers across East Lothian, Midlothian, West Lothian and Edinburgh.
Do you supply heating oil?
No. We install and replace oil boilers and heating systems. We are not a heating oil delivery company.
What warranty will my oil boiler have?
Your boiler comes with a manufacturer guarantee. The term depends on the model and installation, and we confirm it with your quote and register it for you.
