F-Gas certified engineers diagnose and repair domestic split and multi-split air conditioning systems across London. Fixed prices after diagnosis, no surprises.

5 out of 5 stars
Our AC stopped cooling in a heatwave. Renzy were out the next day, found a refrigerant leak, fixed it, and recharged the system - all for the price they quoted on the phone.
We always diagnose before quoting. You get a fixed price for the repair before any work begins.
Book online or call us with what the system is doing - or not doing. We'll book a same-week visit where possible.
We test the system, find the fault, and give you a fixed-price quote before any work starts.
We carry out the repair, re-test the system end to end, and document the work for your records.
Most domestic AC problems come down to a handful of issues. Here are the ones we see most often and what's usually behind them.
Often a refrigerant leak, blocked filter, or a faulty sensor. We pressure-test the system, find the leak, and recharge after repair.
Usually a blocked or frozen condensate drain. We clear the drain, check the slope, and flush the pump if one is fitted.
Loose fan blades, worn bearings, or refrigerant flow noise. We open the unit, inspect, and replace the failing part.
Battery, IR sensor, or control board issue. We diagnose with manufacturer software and repair or replace the failed component.
Every brand has its own fault-code language. We read the code, interpret it against the manufacturer's service manual, and quote the fix.
Repairs done right the first time, by engineers qualified to work on the gas inside your system.
F-Gas certification is the legal qualification needed to recover, top up, and work with refrigerant gas. Your repair is handled safely and documented properly.
We test the system thoroughly before suggesting a fix. You get a clear explanation of what's wrong and a fixed price before we start.
We repair Daikin, Mitsubishi, Panasonic, LG, Samsung, and most other domestic split and multi-split systems.
Our F-Gas certified engineers repair air conditioning across these London areas
Yes, we repair domestic single split and multi-split air conditioning systems. Common issues include weak cooling, water leaking from the indoor unit, unusual noise, bad smells, blocked drains, dirty filters, sensor faults, and fault codes on the controller.
Common causes include blocked filters, dirty internal parts that the air passes through, poor airflow, an undersized unit, incorrect settings, a drainage issue, or a refrigerant problem. Refrigerant is the gas inside the system that moves heat from indoors to outdoors. Only an F-Gas certified engineer should work on that sealed part of the system.
We install leading domestic brands including Daikin, Mitsubishi Electric, Samsung, LG, Fujitsu, and Panasonic. We will explain the practical differences, such as noise levels, warranty, controls, and how tidy the indoor unit looks, then recommend a system that fits your rooms and budget.
Yes. Domestic air conditioning should usually be serviced once a year, or more often if it is used heavily. Servicing includes cleaning filters, checking drainage, testing performance, checking for obvious leaks, and making sure the system is running safely and efficiently.
Modern indoor units are usually quiet on low fan speeds, often quiet enough for bedrooms. Outdoor units make more noise than indoor units, so placement matters. During the survey, we consider neighbouring windows, balconies, and shared walls so the system is comfortable for you and considerate for nearby properties.
Yes, many domestic air conditioning units can also heat. They work as an air source heat pump, which means they move heat rather than creating it directly like an electric heater. This can make them an efficient way to warm a bedroom, loft room, or study.