Find clear answers to common questions about our gas services, including installation, servicing, repairs, and safety checks. Our FAQs are designed to give you confidence, clarity, and peace of mind before booking our services.
We provide professional gas services, including gas boiler installation and servicing, gas fire installation, gas cooker connection, gas safety checks, and repairs. All work is carried out by fully qualified Gas Safe registered engineers.
Yes. Our engineers are Gas Safe registered, which means we are legally certified to carry out gas work safely and in compliance with UK regulations.
Gas appliances should be serviced once a year. Annual servicing improves safety, efficiency, and helps prevent breakdowns or carbon monoxide risks.
Yes. We provide Gas Safety Certificates for landlords after completing the required annual gas safety inspection of appliances and pipework.
A gas boiler should be serviced annually by a Gas Safe registered engineer to ensure safe operation, maintain efficiency, and keep the manufacturer’s warranty valid.
Warning signs include no heating or hot water, strange noises, pressure loss, leaks, error codes, or rising energy bills.
Yes. We install modern, energy-efficient gas boilers and can advise on the best boiler for your home, usage, and budget.
Yes. New boilers are far more efficient than older models and can significantly reduce gas usage and heating costs.
Yes. We install inset, wall-mounted, freestanding, and balanced flue gas fires, ensuring full compliance with safety regulations.
Gas fires are safe when correctly installed and serviced annually. Proper ventilation and flue operation are essential for safe use.
Yes. We service and repair most types of gas fires to ensure safe combustion and efficient performance.
Not always. Some gas fires use chimneys, while others use flues or are flueless, depending on the model and property layout.
Yes. We professionally install and connect gas cookers, carrying out full gas tightness and safety checks.
No. Gas cookers must be installed by a Gas Safe registered engineer to comply with UK gas safety laws.
Yes. We safely disconnect and remove old gas cookers before installing a new appliance.
A chimney is the structure that allows fumes to exit the building, while a flue is the internal passage that safely carries combustion gases from the appliance to the outside.
Most gas appliances require a flue to safely remove combustion gases. However, some modern appliances are flueless and use advanced safety systems and ventilation requirements.
A balanced flue draws air from outside and expels waste gases through a sealed system, making it very efficient and safe. It does not require a traditional chimney.
Yes. During servicing or a gas safety check, we inspect the chimney or flue to ensure it is correctly installed, unobstructed, and safe to use.
A blocked or damaged flue is extremely dangerous and can cause carbon monoxide to enter the property. If identified, the appliance must not be used until the issue is resolved.
Yes. We install and replace flues in accordance with current gas safety regulations and manufacturer guidelines.
Turn off the gas supply, open windows and doors, avoid using electrical switches, and call the National Gas Emergency Service on 0800 111 999 immediately.
Yes. Carbon monoxide detectors are strongly recommended and often legally required. They provide early warning of dangerous carbon monoxide leaks.
Landlords are legally responsible for gas safety and must arrange annual gas safety checks and provide tenants with a valid Gas Safety Certificate.
Carbon monoxide (CO) is a colourless, odourless gas produced when fuel does not burn properly. It is extremely dangerous and can be fatal.
Faulty gas or LPG appliances, poor servicing, blocked flues or chimneys, and inadequate ventilation.
It stops oxygen from reaching vital organs and can cause serious illness or death without warning.
Headaches, dizziness, nausea, fatigue, confusion, and shortness of breath.
Yes. CO detectors are strongly recommended and often legally required in homes with gas, LPG, or solid fuel appliances.
In rooms with fuel-burning appliances and near sleeping areas, following UK safety guidance.
At least one per property level with fuel-burning appliances. Larger homes may need more.
Yes. Boilers, fires, cookers, and LPG appliances can produce CO if faulty or poorly maintained.
Yes. Blocked or damaged flues and chimneys are a common and serious cause of CO buildup.
Yes. Gas servicing and safety checks include combustion and flue inspections.
Yes. Landlords must install carbon monoxide alarms in properties with fuel-burning appliances.
Landlords must ensure alarms are installed and working at the start of a tenancy.
Turn off appliances if safe, open windows, leave the property, and contact a Gas Safe registered engineer.
No. Never ignore a carbon monoxide alarm.
CRIGAS delivers expert heating and plumbing services designed to keep your systems running smoothly, safely, and efficiently.
Copyright 2026 © All Right Reserved, Design by Best Web Studio Ltd.
