The 10 Best Gas Engineers in Cardiff 2026

Ranked by real customer reviews, listing activity and Companies House registration, from public sources.

How this ranking is calculated

Composite score from public signals:

  • Google Business Profile star rating (when 3+ reviews)
  • Google Business Profile review count (log-scaled)
  • How many public profile links the listing carries: Companies House number, Google Business Profile, other directory profiles the business has supplied, its own website
  • Whether the listing has been claimed by its owner

No business can pay to be listed, and no reviews are fabricated. Placement is influenced by an optional paid Premium subscription, which puts a business ahead of equally-scored rivals here. Premium businesses carry a Premium badge on their own profile page and in our directory listings, but this list does not mark them.

  1. Boilerhut Ltd is a gas engineer in Cardiff, rated 4.8/5 from 95 Google reviews. Registered with Companies House (no. 08615540) and currently active. Established Google Business Profile with 95+ customer reviews.

    4.8★ (95 reviews)3 public profile linksclaimed by its owner
    4.8★
    95 Google reviews

  2. SMC Plumbing and Heating is a gas engineer in Cardiff, rated 5/5 from 206 Google reviews. Established Google Business Profile with 206+ customer reviews.

    5.0★ (206 reviews)3 public profile links
    5.0★
    206 Google reviews

  3. Phixing Plumbing and HVAC Solutions is a gas engineer in Cardiff, rated 5/5 from 197 Google reviews. Registered with Companies House (no. 13044258) and currently active. Established Google Business Profile with 197+ cust

    5.0★ (197 reviews)3 public profile links
    5.0★
    197 Google reviews

  4. Let's Heat is a gas engineer in Cardiff, rated 4.9/5 from 152 Google reviews. Established Google Business Profile with 152+ customer reviews.

    4.9★ (152 reviews)3 public profile links
    4.9★
    152 Google reviews

  5. GoGas Solutions Plumbing And Heating is a gas engineer in Cardiff, rated 5/5 from 50 Google reviews. Registered with Companies House (no. 12802614) and currently active. Established Google Business Profile with 50+ custo

    5.0★ (50 reviews)3 public profile links
    5.0★
    50 Google reviews

  6. Extreme Heating Ltd is a gas engineer in Cardiff, rated 4.9/5 from 38 Google reviews. Registered with Companies House (no. 11116161) and currently active. Verified Google Business Profile.

    4.9★ (38 reviews)3 public profile links
    4.9★
    38 Google reviews

  7. KB Heating & Plumbing is a gas engineer in Cardiff, rated 5/5 from 33 Google reviews. Registered with Companies House (no. 17181949) and currently active. Verified Google Business Profile.

    5.0★ (33 reviews)3 public profile links
    5.0★
    33 Google reviews

  8. Quartz Plumbing and Heating is a gas engineer in Cardiff, rated 5/5 from 34 Google reviews. Registered with Companies House (no. 14110471) and currently active. Verified Google Business Profile.

    5.0★ (34 reviews)3 public profile links
    5.0★
    34 Google reviews

  9. Ben Sexton Heating and Plumbing is a gas engineer in Cardiff, rated 5/5 from 15 Google reviews. Verified Google Business Profile.

    5.0★ (15 reviews)3 public profile links
    5.0★
    15 Google reviews

  10. Llandaff Heating is a gas engineer in Cardiff, rated 4.9/5 from 201 Google reviews. Established Google Business Profile with 201+ customer reviews.

    4.9★ (201 reviews)
    4.9★
    201 Google reviews

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