JMR Heating and Energy Ltd

JMR Heating & Energy Ltd is a specialist heating, air conditioning and renewable energy company serving St. Albans, Harpenden, Hertfordshire and the surrounding areas.

We provide expert installation, servicing, maintenance and repair of air source heat pumps, ground source heat pumps, air conditioning systems, MVHR ventilation, underfloor heating and commercial HVAC systems.

Founded by Mark Denman, JMR has built a reputation for technical expertise, high-quality workmanship and solving complex heating and cooling problems that others cannot. We work with homeowners, property developers, businesses and commercial clients who value reliable advice and professional service.

Whether you require a heat pump installer in St Albans, air conditioning installation, ventilation solutions, plant room upgrades or specialist fault finding and repairs, we deliver tailored solutions designed for long-term performance, efficiency and comfort.

Trusted heat pump and air conditioning specialists serving St Albans and Hertfordshire.