Business Details
33 Years
experience
Emergency
services
Trusted Plumbing and Heating Services in Ayr
Established in 1993, Darwin Johnstone Gas Services is a family-run business delivering reliable heating and plumbing solutions across Ayrshire. Our team of Gas Safe registered engineers brings over 100 years of combined industry experience, specializing in the installation, servicing, and repair of natural gas, oil, and LPG appliances. Led by Darwin Johnstone, an ex-British Gas-trained professional, we prioritize safety, compliance, and quality workmanship.Accredited by Gas Safe, OFTEC, and the Chartered Institute of Plumbing and Heating Engineering, we offer transparent pricing, emergency services, and tailored solutions for both domestic and commercial clients. Our commitment to customer satisfaction is reflected in our prompt response times, clear communication, and competitive pricing with no hidden fees.
Services
Boiler Servicing
Central Heating Systems
Oil Boiler Repairs
Plumbing Repairs
Gas Safety Inspections
Details
- Year established: 1993
Highlights and features
- Over 100 years of combined experience in the industry
- Family-run business with Gas Safe registered engineers
- Transparent pricing with no hidden fees or surprises
- Emergency services available for urgent plumbing or heating issues
- Awarded Vaillant Mastertec Installer status for technical expertise
Associations and certifications
- Gas Safe Registered
- Vaillant Mastertec Installer
- OFTEC
- The Chartered Institute Of Plumbing And Heating Engineering
- Unvented Hot Water Systems Approved
- LPG Approved Installer
What people say
First class service
Arrived promptly
Polite and helpful
Efficient and tidy work
Highly recommend
Services
Boiler Servicing
Our Gas Safe engineers provide thorough boiler servicing to ensure optimal efficiency and safety. Regular maintenance extends equipment lifespan, reduces breakdown risks, and maintains warranty validity. We service natural gas, oil, and LPG boilers using advanced diagnostic tools, offering tailored solutions for residential and commercial properties in Ayrshire.
Central Heating Systems
We design and install custom central heating systems tailored to property requirements. From electric systems to full boiler replacements, our solutions prioritize energy efficiency and year-round comfort. Our engineers combine modern technology with traditional craftsmanship, ensuring seamless integration and minimal disruption during installations across Ayrshire.
Oil Boiler Repairs
Specializing in oil boiler servicing and repairs for rural properties, we address issues with heating efficiency, ignition failures, and component malfunctions. Our OFTEC-certified technicians use specialist equipment to diagnose and fix problems promptly, offering emergency call-outs and annual maintenance plans to keep systems operating reliably in remote locations.
Plumbing Repairs
Our team handles urgent plumbing issues including burst pipes, leaks, and drainage blockages. Available for same-day repairs, we utilize modern techniques to resolve problems swiftly while maintaining high standards. Services cover tap replacements, pipe repairs, and emergency winter standby to prevent property damage in Ayrshire.
Gas Safety Inspections
We conduct comprehensive gas safety checks for residential and rental properties, issuing Landlord Gas Safety Certificates. Our certified engineers inspect appliances, pipework, and flue systems to ensure compliance with UK regulations. Inspections include gas leak detection, combustion analysis, and safety critical checks to guarantee legal compliance and occupant safety.
People
Darwin Johnstone
Founder & Lead Engineer
With over 30 years' experience, Darwin founded the business in 1993 after training with British Gas. A Gas Safe registered engineer, he specializes in gas safety inspections, central heating design, and unvented hot water systems. Known for his meticulous approach and customer focus, Darwin ensures all work meets industry standards while maintaining the company's family values.
Questions
Are your engineers Gas Safe registered?
Yes, all our plumbers and heating engineers are Gas Safe registered (Number 521145) and hold additional certifications including OFTEC and Vaillant Mastertec Installer status.
Do you provide emergency plumbing services?
We offer emergency call-outs with typical response times under 40 minutes for urgent issues like burst pipes or boiler failures across Ayrshire.
Can you service oil boilers?
Yes, our OFTEC-certified engineers specialize in oil boiler installations, repairs, and servicing for rural properties without mains gas access.
How transparent is your pricing?
We provide free, no-obligation quotes with clear cost breakdowns and no hidden fees, ensuring complete pricing transparency before work begins.
What areas do you cover?
We operate across Ayrshire, with Ayr as our main base, serving both urban and rural communities for plumbing, heating, and gas safety needs.
Do you offer central heating installations?
Yes, we design and install complete central heating systems, including electric, gas, and oil options, tailored to property size and energy efficiency requirements.
