Frequently Asked Questions

An air source heat pump is an energy-efficient heating system that extracts heat from the outside air and transfers it into your home. It works like a refrigerator in reverse, providing both heating and hot water efficiently even in cold temperatures.

Boiler installation costs vary depending on the boiler type, your property requirements, and any additional work needed. The instant quote gives a transparent working estimate based on your answers. Prices typically range from £1,995 to £5,500 depending on boiler type, brand, and installation complexity, with the final confirmed price agreed before booking.

Yes. The current Boiler Upgrade Scheme grant for an eligible air source heat pump is £7,500, subject to the live official criteria. Current approved BUS values are: Current approved BUS grant values are £7,500 for air-to-water heat pumps, £2,500 for air-to-air (A2A) heat pumps, £7,500 for ground-source or water-source heat pumps, and £5,000 for eligible biomass boilers, subject to official criteria.. Nimbus checks the live GOV.UK and Ofgem route before quoting or progressing an application.

A like-for-like combi boiler swap is typically completed in 1-2 days. System changes (such as conversions to a different boiler type or system boiler installations) can take up to 7 days depending on the complexity of pipework and any additional work required.

We offer secure online payment options through Stripe, including payment by card. For flexible payment plans, you can use Klarna at checkout to spread the cost of your new boiler or heat pump over time.

All our installations come with manufacturer warranties ranging from 5 to 12 years depending on the boiler model. We also provide our own workmanship guarantee for complete peace of mind.

Yes, all our heating engineers are Gas Safe registered (Registration: 966812). You can verify our registration at gassaferegister.co.uk. We're fully qualified to work on gas appliances and heat pumps.

Annual servicing is recommended by boiler manufacturers and Gas Safe to ensure safe and efficient operation. Regular servicing helps prevent breakdowns, extends your boiler's lifespan, and maintains its efficiency rating.

A Gas Safe engineer will check your boiler's safety, efficiency, and components. This includes inspecting the heat exchanger, burner, controls, flue, and pressure levels. They'll also check for any gas leaks or carbon monoxide risks.

Yes, we repair all major boiler brands including Worcester Bosch, Vaillant, Baxi, and Ideal. Our Gas Safe engineers are trained to diagnose and fix common issues such as no heating, no hot water, unusual noises, and error codes.

Yes. Nimbus handles urgent boiler repair enquiries during answered hours, Monday to Friday 09:00-17:00, and will aim to respond as quickly as the diary, parts, and safety allow. If you smell gas or suspect carbon monoxide, call the National Gas Emergency Service on 0800 111 999 immediately.

We proudly serve Scunthorpe, North Lincolnshire, and surrounding areas including Brigg, Barton-upon-Humber, Winterton, Epworth, Crowle, and all DN postcode areas.

A combi (combination) boiler provides both heating and hot water directly from the unit, without needing a separate water tank or cylinder. It heats water on demand, making it compact and efficient for homes with limited space.

A system boiler is a sealed system that heats water in a cylinder. It requires a hot water cylinder (either vented or unvented) to store hot water. For vented systems, a cold water storage tank in the loft is still required to supply the cylinder. The key difference between a system boiler and a heat only (regular) boiler is that system boilers have built-in components including an expansion vessel, pump, and pressure relief valve - making them pressurised systems that don't require these separate components. System boilers are ideal for homes with multiple bathrooms as they can maintain hot water pressure across several outlets simultaneously without pressure loss.

Yes, we install air source heat pumps as an alternative to traditional boilers. They are a lower-carbon option that can work very well in the right property, and grant support can make the upfront cost more manageable.

Gas Safe Register is the official gas safety body for the UK, replacing CORGI as the gas safety register. All gas engineers must be registered to work legally on gas appliances. Our registration number is 966812.

A quality boiler typically lasts 10-15 years with proper maintenance. Regular annual servicing can extend this to 20 years. If your boiler is over 10 years old, consider a replacement for improved efficiency and lower energy bills.

Common signs include: frequent breakdowns, rising energy bills, unusual noises (banging, gurgling), yellow flame instead of blue, water leaks, boiler over 10-15 years old, and difficulty finding replacement parts. If repairs cost 50% or more of a new boiler, replacement is usually better value.

Flexible payment options may be available through our secure Stripe checkout, including eligible card and Klarna options where supported. Availability, payment terms, and affordability checks are handled by the payment provider, so Nimbus will not promise a finance term until checkout confirms what is available for your quote.

We recommend and install Worcester Bosch, Vaillant, Ideal, and Baxi - all reliable brands with excellent warranties. Worcester Bosch and Vaillant consistently top reliability surveys and are highly rated by heating engineers. We'll recommend the best option for your specific needs, property type, and budget.

A standard boiler service typically costs between £70 and £150 depending on your location and boiler type. We offer competitive pricing - contact us for a quote. Annual servicing is essential to maintain your manufacturer warranty and ensure safe, efficient operation.

Combi boiler: Single compact unit that provides both heating and hot water on demand without tanks. Best for 1-2 bathroom homes with good water pressure.

System boiler: Sealed system with a hot water cylinder but no loft tank. Ideal for homes with 2+ bathrooms needing higher hot water demand.

Regular boiler: Traditional system requiring both a loft cold water tank and hot water cylinder. Best for older homes with existing traditional systems.

Yes - it's a legal requirement for landlords to have a carbon monoxide alarm in any room with a fixed combustion appliance (except gas cookers). For homeowners, it's highly recommended for safety. Alarms must comply with BS 50291 standards. We can supply and fit a compliant alarm as part of your installation.

A CP12 (Landlord Gas Safety Certificate) is a legal requirement for all rental properties with gas appliances. It confirms all gas appliances, pipework, and flues are safe. The certificate must be renewed every 12 months by a Gas Safe registered engineer. We provide CP12 certificates for landlords in our service area.

You may be able to get support through the Energy Company Obligation if your household, property, and delivery route meet the current official criteria. Because the rules and supplier or local-authority routes can change, Nimbus checks the live eligibility path rather than promising a blanket free boiler offer.

A new A-rated condensing boiler can save up to £300-£400 per year on energy bills compared to an old G-rated non-condensing boiler. Actual savings depend on your property size, insulation, usage patterns, and the efficiency of your current boiler. You'll also benefit from improved reliability and lower repair costs.