When boiler diagnostics are needed
Does your boiler fail to start, display an error code, go out, make noise, fail to heat water or operate erratically? Do not dismantle the equipment yourself. Send photos of the boiler, its manufacturer’s plate showing the model and serial number, and the display. We will review your request free of charge, identify the model and tell you whether we can service this equipment. Reviewing photos is not diagnostics, a cost estimate or a warranty assessment.
How much it costs
Preliminary review of a request using photos — UAH 0. This is not diagnostics or a cost estimate.
Service area: Sofiivska Borshchahivka and Vyshneve. The operator confirms the address and availability of a qualified technician before arranging a visit.
If you approve a repair within the same order, the UAH 900 is credited towards it; the minimum total including repair is UAH 1,500.
You can order diagnostics alone for UAH 900, with no obligation to order a repair. “The same order” means the same request number, boiler and fault. If we are waiting for a part after approval, the request remains open. Spare parts, materials, additional work and a return visit are not included in UAH 1,500: we explain and agree their description, price and timing before ordering.
What diagnostics include
- a visit within the confirmed service area;
- inspection of the boiler and accessible connections without working on the gas components;
- clarification of the symptoms, error code and fault history;
- safe checks that a trained technician is permitted to carry out for this model;
- an explanation of the cause or the next safe step;
- a price or maximum spending limit before the repair begins;
- a recommendation to contact another authorised provider if the work falls outside this service.
What work we carry out
After diagnostics, we only carry out work that a trained technician is permitted to perform safely on your model and can record in the documents. Work on gas components, the burner or gas valve, initial start-up, commissioning, and documents for the gas distribution network operator — the company that distributes gas — are not included in the basic service.
Condensing boilers, floor-standing boilers, boiler rooms, flushing and their scheduled maintenance cannot currently be ordered on this page.
How an order works
- Request. Leave your phone number, locality, brand/model, symptoms and, if possible, photos.
- Review. The operator rules out an emergency, confirms the boiler type, service area, base price and available appointment window.
- Diagnostics. The technician carries out accessible, safe checks for this model and explains the result.
- Approval. You receive a price or spending limit. Parts and additional work require separate approval.
- Work and checks. The technician completes the agreed, permitted work and checks the result.
- Document. The work actually performed, materials and warranty period are recorded in the order agreement or completion report.
How long it takes
The time required depends on the model, access, fault and availability of the necessary part. After diagnostics, the technician will tell you whether the work can be completed during the first visit and whether a return visit is needed. We do not promise an exact duration before inspection.
Where we work
Service area: Sofiivska Borshchahivka and Vyshneve. The operator confirms the address and availability of a qualified technician before arranging a visit.
Documents and warranty
Before the repair, we agree the order, spending limit and warranty period. After completion, we record the work actually performed and materials in the order agreement/completion report. Completed work has a 24-month warranty under clause 9.2 of the Mastergaz public offer. Completed work and its warranty are recorded in the order documents. Diagnostics without a repair do not guarantee the outcome of a future repair, but a complaint about the quality of the diagnostics themselves can be registered through the contact centre.
Prepare for the visit
- clear access to the boiler, power socket and shut-off valves;
- keep a photo of the error code and do not dismantle the boiler;
- have the instruction manual and previous completion reports ready, if available;
- tell us about previous repairs, recurring problems and unstable power supply;
- do not buy a spare part at random before diagnostics.
Book diagnostics
Leave your phone number, locality, brand/model, error code and photos. Online requests can be submitted around the clock; an operator will process your request during contact-centre hours.
Works: Mon–Fri 09:00–18:00; outside these hours by prior agreement and subject to technician availability. Online requests can be submitted 24/7. Completed work has a 24-month warranty under clause 9.2 of the Mastergaz public offer.
FAQ
How is the UAH 1,500 minimum repair total calculated?
First, UAH 900 is paid for the visit and diagnostics. If you approve a repair of the same boiler and fault within the same request, the UAH 900 is credited towards it; the total including repair starts at UAH 1,500. Spare parts, additional work and a return visit are charged separately after approval.
Can I order diagnostics alone?
Yes. The visit and diagnostics cost UAH 900 within the confirmed service area; you do not have to order a repair afterwards.
When is a return visit charged separately?
When a repair requires a part, additional work or another scheduled visit. Before booking, we separately explain the price of the part, work and return visit, as well as the expected timing.
Are spare parts included?
No. After diagnostics, we agree the part name or reference number, price, delivery time and warranty terms. We do not order anything without your consent.
Which boilers and work are covered by this service?
Domestic wall-mounted boilers and only work from the agreed list. The operator checks the brand, model, capacity and availability of an appropriate specialist. Condensing boilers, floor-standing boilers, work on gas components, start-up, maintenance and flushing cannot be ordered on this page.
How can I pay?
The operator will confirm the available payment method and payment document before the visit. The stated consumer prices are final; mandatory taxes are not added on top.
What warranty is provided?
The written warranty applies to the work actually performed and recorded in the order agreement/completion report. Completed work has a 24-month warranty under clause 9.2 of the Mastergaz public offer. The warranty is recorded in the order documents.
Where do you work?
Service area: Sofiivska Borshchahivka and Vyshneve. The operator confirms the address and availability of a qualified technician before arranging a visit.
What should I do if I smell gas?
Do not switch lights or electrical appliances on or off, and do not use a flame. If it is safe, shut off the gas and open the windows, leave the premises and call 104 from a safe place; call 112 if needed.
Operator of Technical Maintenance 
