oil boilers

Aztec Gas offer a full range of oil boilers and being Grant accredited

enables us to give up to ten years guarantee on Grant products.


The Grant VortexBlue 

The Grant VortexBlue combines existing proven condensing boiler technology with a revolutionary new blue flame. Using a new state-of-the-art Riello Blue Flame compact burner alongside the familiar Vortex oil-fired boiler, this market-leading combination gives you a reliable product with those all-important low emissions.

Grant’s new generation of clean burning, low emission and high efficiency boilers meet the EU emission changes planned to come into force in 2018.

The cutting edge VortexBlue range consists of 15 models with heating outputs ranging up to 36kW. Available in internal, external and combi models.


Blue Flame Technology

Grant and Riello’s R&D have together successfully matched and field trialled this new range of innovative appliances. As the name suggests, the flame produced is blue in colour, rather than the usual yellow colour of the standard burners fitted in the current Grant Vortex range, which results in a much cleaner combustion process. All of the Grant VortexBlue boilers operate at the very high efficiency levels expected of the Grant Vortex condensing range and have the added benefit of producing extremely low NOx emissions.

In 2018, oil fired boilers installed in the UK will have to meet lower NOx emission targets. Furthermore, it is likely that even more stringent emission levels will be set in future years, so Grant have taken the decision to try and future proof oil fired appliances by moving to very low NOx, Blue Flame technology today. The features include:

Award winning Vortex condensing heat exchanger

90.7- 93.3% Gross SAP2009 annual efficiency

Outputs ranging from 15-36kW

Market-leading Riello Blue Flame burner

Familiar burner technology

Exceptionally quiet when in operation

Sleek white casing

Neon diagnostic indicators

Designs like the ‘Multi Pass’ boiler achieved efficiency levels far in excess of any UK or European Standards and have helped thousands of homes to reduce their annual fuel bills. Grant Vortex and VortexBlue oil-fired condensing boiler ranges with exceptional SAP2009 efficiencies up to 93.3% gross (97% gross for SAP2005).

Grant’s ultra-high efficiency condensing oil boilers have been on the market for over 10 years and features 60 different model variations, with outputs ranging from 12-70kW.


Aztec Gas are OFTEC registered

Finding a competent technician to install or service heating equipment used to be a challenge. That changed in 2002 when the British government removed some of the guesswork by introducing the idea of officially recognised ‘competent person schemes’, for a range of building trades, with the aim of improving standards within the building industry. Heating is one of the trades covered and OFTEC’s competent person scheme is a register of installers of oil, solid fuel and renewable heating equipment. We also offer registration for oil and solid fuel servicing and maintenance businesses.

To become OFTEC registered, all technicians must undertake an approved training course and assessment. They are also inspected regularly by OFTEC to ensure their work meets the required standard. Around 8,000 technicians are registered with OFTEC’s competent person scheme.


What does it mean? 

A heating installer who is a competent person is authorised to self-certify that their work complies with all local building regulations and standards. They can also undertake specific works without needing to submit a building control notice. As a result, local authorities will not need to inspect their work which saves you time and money.

The servicing and maintenance of oil and solid fuel heating equipment does not need to be certified under building regulations, but should still be done by a competent person. OFTEC registered servicing technicians are trained to follow a set of procedures that ensure that all aspects of the heating system are checked and maintained in accordance with industry and manufacturers’ approved standards.


The benefits for you

Regardless of whether you are looking for an installer or a servicing technician, selecting an OFTEC registered technician provides peace of mind that you are choosing a skilled and qualified technician, rather than an untrained and potentially incompetent workmen.

Using an installer who is registered with OFTEC can also save time and reduce costs because they self-certify their work, avoiding the need for a building inspection and associated fees. Because their work is covered by a warranty it also means you will avoid any complications in the unlikely event that their work does not comply with the building regulations.

Employing an OFTEC registered technician for the regular servicing and maintenance of oil and solid fuel heating equipment is the best guarantee that your system will run safely and efficiently.