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About Hollis Plumbing and Gas Ltd
We're a family-run plumbing and heating company based in Cardiff, serving South Wales with over 22 years of professional experience.
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The Team at Hollis Plumbing & Gas
Hollis Plumbing and Gas Ltd was built on a simple principle: deliver outstanding workmanship with genuine customer care. What started as a local plumbing service has grown into one of South Wales' most trusted heating and plumbing companies, thanks to our commitment to quality and the loyalty of our customers.
Over two decades later, we remain a proud family-run business. Our Gas Safe registered engineers specialise in premium boiler brands including Baxi, Worcester, Alpha and Vaillant, and our 170+ Checkatrade reviews rated 10/10 reflect the service our clients have come to expect.
Professional service, traditional values.
With 22+ years of experience and a flawless 10/10 rating, we combine technical expertise with the personal touch of a family business.
The principles that guide every job we undertake
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Quality Work
We pride ourselves on high standards and attention to detail on every single project we complete.
Customer Service
As a Cardiff-based family business, we're invested in our community and the customers we serve.
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Expertise
Over 22 years of experience means we've seen it all and know how to get it right first time.
Got questions?
We've got answers to help you understand our services and what to expect.
Are you Gas Safe registered?
Yes, all our engineers are fully Gas Safe registered and certified to work safely on gas appliances and heating systems throughout South Wales.
What areas do you cover?
We're based in Cardiff and cover all of South Wales, providing plumbing and heating services to domestic and commercial clients across the region.
Which boiler brands do you install?
We specialise in premium brands including Baxi, Worcester, Alpha and Vaillant, ensuring quality installations with reliable manufacturer warranties.