ONE CALL HVAC LTD

For over 20 years, One Call HVAC has installed, repaired, serviced, and piped air conditioning throughout London. We keep every engineer on our own books, agree every price in writing, and back every job with F-Gas certification and public liability cover. Our mission is to provide straightforward service, qualified engineers, and clear pricing across all 32 London boroughs.

We handle everything from single-room split system installs to commercial VRF systems, ensuring each job is completed to the highest standard with transparent, upfront pricing. We specialise in air conditioning installation, repair, and maintenance, offering wholesale units and parts to contractors. Our services include designing and installing refrigerant pipework to F-Gas standards, with all runs pressure-tested and certified.

We pride ourselves on employing our own F-Gas certified engineers, not subcontractors, and providing fast response times with certified work documented for your records. Whether it's a domestic property or a commercial fit-out, we ensure reliable cooling and heating solutions.