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100% Positive
Reviews: 2

Ongas Corgi registered heating engineers

Call the experts at Ongas.

Tel 02071832284 Mobile 07853057185

We are an established London based corgi registered company who service both domestic and commercial customers.

We cover all areas of London and the surrounding postcodes.

We pride ourselves on providing our customers with the highest level of service.

We offer a 24 hour emergency call out service and offer an extensive range of domestic and commercial heating services, covering all types of heating and gas work.

Ongas has a team of highly trained gas technicians on call when you need us.


All Makes of boilers repaired and serviced.
Full central heating systems installed.
Boiler replacements and upgrades.
Two year warranty on all new boilers.
Landlord safety inspections.
Cooker installations.
System upgrades.
Pumps immersion heaters and radiators.
Unvented hot water systems.
Underfloor heating.
Evening and weekend appointments available at no additional charge.
Fixed price solutions and fair pricing.
Free estimates and advice.
Fast friendly and reliable engineers.

We do not charge any call out charge we only charge you for the time that we are on site.

We specialize in replacement boilers and full central heating systems , we tell you exactly how much the job is going to cost and leave you with no nasty suprises.

We are a genuine family run company and heres some of our good points.

Quality workmanship at affordable prices.
Corgi registered engineers
Friendly and trust worthy
We know what a dust sheet is for
We do the job correctly and dont cut corners
Fast service( Fitted and tested within a couple of days)
We respect your property and wont rip you off
All paperwork completed on the day
We take our time and do the job right and fit you a quality boiler.

There are a lot of cowboys working in London that are sadly not CORGI registered. We cannot stress how important it is to ensure that your engineer is CORGI registered , ask to see his ID card and help push the cowboys out.

For further information on our services please contact us on 0207 1832284 or 07853057185 or visit us at

Price: not specified


2 reviews from LocalHand members

Dylan J.
1 reviews written

Positive Feedback Excellent service, they replaced my boiler within 24 hours of me calling them. Call them they wont let you down.

1 out of 2 people found this review helpful
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Gareth  J.
1 reviews written

Positive Feedback At last a reliable gas central heating company, Dylan was extremely friendly and very good at his job, lads keep up the good work, Im really happy with my new boiler installation.

1 out of 2 people found this review helpful
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