Family-run boiler installation, central heating and emergency plumbing for homes and businesses across Hertfordshire, done properly first time.

About Heat Gap
Heat Gap Heating, Gas & Plumbing is a family-run firm based in St Albans. From new boiler installations and central heating upgrades to burst pipes and landlord gas safety certificates, our Gas Safe registered engineers look after homes and businesses across Hertfordshire.
We’re a small local team, and it shows in the work: we turn up when we say we will, quote before we start, and leave every job tidy. Most of our work comes from repeat customers and recommendations around St Albans, and that is a reputation we intend to keep.

Our Services
Gas Safe registered engineers covering everything from new boilers to emergency leaks, for homes and businesses across Hertfordshire.
A-rated combi and system boilers supplied and fitted across St Albans, with manufacturer warranties and a full handover.
Fast fault-finding and repairs on all major makes, plus annual servicing that keeps your warranty valid.
Full system design and installation, radiator upgrades, smart controls and power flushing for cold or noisy systems.
Leaks, bursts and blockages fixed fast by an emergency plumber in St Albans. Available 24/7 with no call-out charge.
Gas engineer services including hob and cooker connections, gas leak tracing and landlord CP12 certificates.
Planned maintenance, gas safety and rapid call-outs for offices, shops and rental portfolios across Hertfordshire.

WHY HEAT GAP
Our customers say the same things again and again: on time, tidy, honest about price, and the job done right first time.
We answer the phone, and we turn up when we say we will. Usually the same day.
A fixed quote before we start. The price you're given is the price you pay.
Every gas job is carried out by a qualified, Gas Safe registered engineer.
All work is guaranteed and fully insured, and we leave your home as we found it.

Boilers & Central Heating
From high-efficiency combi swaps to full central heating systems. Supplied, fitted and guaranteed by local gas engineers.

WHO WE WORK FOR
The same careful workmanship, whether it’s a family home in St Albans or a busy premises in Hertfordshire.

Areas We Cover
Based in St Albans, we cover all AL postcodes and the surrounding towns and villages. If you’re in Hertfordshire, we can usually help.
Not on the list? Give us a call anyway. If you’re nearby, we’ll do our best to get to you.

Google Reviews
Rated 5.0 out of 5 from more than 60 Google reviews, every one of them 5 stars.
Posted on Google Akter ArafatTrustindex verifies that the original source of the review is Google. Sharif bhai did a very good job in my property. He fitted the shower properly and fixed the leak issue. He checked everything carefully and made sure there was no more leaking after the work finished. He was polite, professional, and helpful. The work was neat and clean, and the shower is now working very well. I am happy with his service and I would recommend Sharif bhai to others for plumbing work.Posted on Google Nasim Ali ShekhTrustindex verifies that the original source of the review is Google. Best plumber I’ve ever seen in my lifetimePosted on Google Francisco Roig Morcillo (Crowlee)Trustindex verifies that the original source of the review is Google. Excelent jobPosted on Google Areeba AbbasiTrustindex verifies that the original source of the review is Google. Wonderful service with very humble staffPosted on Google Saint oneTrustindex verifies that the original source of the review is Google. He was great quick and problem solver. ThanksPosted on Google Deepak M.BTrustindex verifies that the original source of the review is Google. I recently had my boiler serviced by Heatgap( 99 Byron Road,Luton) and I couldn’t be happier with the experience. The Technician arrived on time, was professional, and explained everything clearly. The service was thorough, and they made sure the boiler was running safely and efficiently before leaving. What really stood out was their friendly attitude and attention to detail. They took the time to answer my questions and gave helpful advice on maintaining the boiler. Overall, excellent service from start to finish. I would definitely recommend Heatgap to anyone looking for reliable and professional boiler servicing.Verified by TrustindexTrustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more
Free, no-obligation quotes. Gas Safe registered engineers. 24/7 emergency call-outs across Hertfordshire.

FAQ
Yes. All gas work is carried out by Gas Safe registered engineers, and you’re welcome to check our registration on the Gas Safe Register before we start. It’s a legal requirement for any boiler or gas work in the UK.
No. We quote for the work itself, not for turning up. For emergencies we’ll give you a clear idea of cost on the phone before an engineer sets off.
We’re based in St Albans, so for genuine emergencies like burst pipes, gas concerns or a total loss of heating we can usually be with you within the hour, day or night.
We install and service all major makes. We’ll recommend a boiler sized for your home and budget rather than pushing one brand, and we register the warranty for you.
Yes. We carry out landlord gas safety inspections across St Albans and Hertfordshire, with the CP12 certificate emailed to you the same day. We can also remind you when renewal is due.
Yes. We regularly work in Harpenden, Hatfield, Welwyn Garden City, Hemel Hempstead, Radlett and across Hertfordshire. If you’re nearby, give us a call.

Advice & Guides
Plain English answers to the questions we get asked most in St Albans homes.

Contact Us
Send us a few details and we’ll call you back within one working hour with honest advice and a free, fixed quote.
Call us any time · 24/7 emergency call-outs