Gas Tech Heating LTD

Gas Tech Heating: boiler, heat pump and plumbing work across Hertfordshire

Gas Tech Heating LTD, referred to on its site as GTH, is a heating and plumbing firm based in Hemel Hempstead and working across Hertfordshire. Its engineers present themselves as Gas Safe registered and MCS certified, and the company states that its team brings together more than 40 years of combined experience with boilers, heating systems and renewable technologies.

The business addresses both private homeowners and other client types: the site lists a commercial line of work and a landlord service aimed at rental properties, including the issue of gas safety certificates.

Boilers: installation, servicing and repair

Boiler work is the core of the offer. The company carries out installation and replacement of high-efficiency boilers, annual servicing intended to keep equipment safe and efficient, and repairs handled by Gas Safe registered engineers. It also advertises emergency boiler breakdown cover for households left without heating or hot water, and gas safety certificates following inspection of the boiler.

Air source heat pumps and heating upgrades

As MCS certified installers, GTH designs and installs air source heat pump systems and presents itself as a route for homeowners moving to low-carbon heating. Alongside heat pumps, the site details work on existing heating systems: powerflushing to address cold spots, underfloor heating design and installation, radiators and towel rails, and smart heating controls and thermostats for managing heating and hot water remotely.

Plumbing, bathrooms and maintenance

The plumbing side covers general repairs and maintenance, emergency callouts for problems such as major leaks, and bathroom work, from fitting a new bathroom to carrying out repairs and installations as required. A separate commercial service covers plumbing and heating needs for business premises.

Service plans and payment options

The company offers service plans, including a boiler care plan and an ASHP care plan, as ongoing maintenance arrangements for its systems. It also states that GAS TECH HEATING LIMITED acts as an Introducer Appointed Representative (Financial Services Register No. 949688) of Phoenix Financial Consultants Limited, a credit broker authorised and regulated by the Financial Conduct Authority (FRN: 539195) that offers finance from its panel of lenders, subject to status and credit checks.

Reputation and customer feedback

The site reports a score of 5.0 out of 5 based on 405 reviews, and a separate figure of 406 reviews appears in the page header, attributed to Trustindex. The published testimonials, dated between April and September 2026, describe boiler installations, a heat pump installation, leak detection, an emergency callout for a leaking boiler, and repeat use of the firm; several mention a member of the team named Tom and praise punctuality, tidiness and communication.