Oven not heating
Units failing to reach temperature or taking too long to heat up.
Commercial Kitchen Gas Engineers – Fast & Reliable
Book an engineer for breakdowns, warranty repairs or servicing.
The highest quality of in & out of warranty repairs
Our engineers are authorised to work on all Rational ovens in and out of warranty. Every repair and installation we carry out with genuine Rational parts is backed by a 12-month manufacturer's warranty, giving you total peace of mind.
Breakdown Callouts
Fast response to equipment breakdowns. Our engineers are available to get your kitchen back up and running quickly with minimal downtime.
Warranty Repairs
Comprehensive warranty repair services for your gas equipment. We handle all manufacturer warranties efficiently with genuine parts.
Servicing
Regular maintenance and servicing to keep your equipment running safely and efficiently year-round with minimal interruption.
Service Plans
Protect your equipment with tailored service plans. Priority callouts and regular maintenance included with exclusive benefits.
What We Repair
Expert repairs for a wide range of commercial kitchen gas and cooking equipment.
Rational Combi Ovens
Gas Ranges
Fryers
Steamers
Salamanders
Chargrills
Hobs & Burners
Bratt Pans
Grills
Commercial Ovens
Hot Holding Units
Cooking Suites
Problems We Fix
Fast diagnosis and repair for the issues commercial kitchens face every day.
Error codes on Rational ovens
Frequent error codes, fault messages or shutdowns on Rational combi units.
Poor steaming or no steam
Loss of steam performance affecting cooking quality and consistency.
Gas smell or suspected leaks
Safety-critical gas issues that need urgent investigation and repair.
Overheating appliances
Equipment running too hot, tripping, or causing safety concerns.
Fan and airflow issues
Noisy fans, airflow problems or uneven heat distribution.
Uneven cooking results
Hot and cold spots, inconsistent baking or roasting performance.
Ignition and flame failures
Burners not lighting, flame-outs or intermittent ignition.
Temperature control faults
Inaccurate thermostats, fluctuating temperatures or poor control.
Electrical / control board faults
Control panels, PCBs or electronics failing or behaving erratically.
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Accredited & Trusted By
Why Gastech?
Fast Response Times
Minimise kitchen downtime.
90% First Time Fix
A vast amount of stock in all of our vehicles means we're ready to act.
Fully Accredited
Gas Safe registered, Rational Service Partners, and CEDA members for your peace of mind.
15 years of service
Knowledgable and experienced for issues large and small - our experience is invaluable and provides the foundation of a reliable and well established service.
"Quality isn't just what we deliver — it's who we are. Every repair, every service call, every client relationship is built on precision, reliability, and care."
— Director, Gastech Inc.
Proudly Looking After
Trusted by leading restaurants and hospitality brands
"
Gastech have been looking after our kitchen equipment for years. Their response time is incredible and the engineers are always professional and knowledgeable.
Sarah Mitchell
Operations Manager, Raffles London
PlansService Plans, Designed Around Your Kitchen
Reliability isn't an add-on — it's the standard.
Our Service Plans keep your equipment running safely, smoothly, and at peak performance, day after day. Regular maintenance means fewer surprises, fewer breakdowns, and more uptime where it matters most: your kitchen.
BASIC
Essential care to keep your equipment running reliably.
PLUS
Smarter maintenance with added protection and priority support.
PREMIUM
Complete coverage for zero-stress, always-ready performance.
Frequently Asked Questions
Quick answers to the most common questions our customers ask.
Yes — in most cases we can attend the same day, depending on the time of booking and location.
Yes. Our authorised Rational engineers handle both in-warranty and out-of-warranty repairs using genuine parts.
We cover London and the Home Counties, including postcodes W, WC, N, NW, HA, E, EC, EN, SE, SW, RG, SL, HP, UB, GU, KT and TW.
Yes — we offer Basic, Plus and Premium maintenance plans designed to reduce breakdowns and keep your kitchen running smoothly.
We service and repair Rational combi ovens, gas ranges, fryers, steamers, hobs, chargrills, salamanders, bratt pans and more.