In partnership with Quantum Gas Engineers
Welcome to Warm & Cool London
Heating & Cooling Experts
Air Conditioning
Domestic & commercial air conditioning installation & maintenance.
Meet Londons's Premium Heating & Cooling Specialists.
Check what other out what other Londoners say about our services.
Read what other locals say about their Warm & Cool London journey
Warming London homes
London's Premium Heating Specialist
Vaillant Boiler Installation & Servicing, London
At Warm and Cool London, we put quality, reliability and eco-friendliness at the forefront of everything we do, which is why Warm and Cool London will only ever deal with the Vaillant brand.
If you’re in the market for an environmentally friendly and cost-effective boiler, you should look no further than the Vaillant range. Vaillant is dedicated to providing energy-efficient boilers with low emissions whilst always prioritising renewable technologies with a focus on anticipating future needs. Vaillant heating and hot water systems use sustainable energy sources, providing customers with simple and eco-friendly ways to save on energy.
Vaillant Boilers are known for their high performance, dependability, and exceptional quality, making them an excellent choice for any property and the reason why we choose Vaillant over all other manufacturers on the market.
Warming London homes since 2007
London's Premium Heating Specialist
Understanding Boiler Servicing & Repairs
Recognising when you require a boiler service versus a heating repair is vital. Boiler servicing, akin to a car’s MOT, is an annual check-up for safety, efficiency, and performance, including replacing specified parts as instructed by the manufacturer. Mainly, a boiler service is preventive, catching issues before a complete failure, the annual MOT for your boiler!
Boiler repairs, however, are required when a breakdown occurs and your boiler stops producing heating or hot water. Our standard boiler servicing and “Cosy Plan” service plan does not cover repairs or faulty boilers, focusing instead on preventive maintenance.
Our Vaillant Boiler Packages
ecoFit Pure
Pure 25 – 30 – 35
If space is at a premium in your home, the cupboard-size ecoFIT pure boiler is the choice for you.
It’s designed to be flexible, with a rear flue option available to give you more choice where you put it.
£POA – starting from
ecoTec Pro
Pro 24 – 28 – 30
The ecoTEC pro combi boiler is the ideal solution for small-to-medium homes that need instant hot water without the need for a water tank.
Using modulating technology the boiler can adapt itself to provide you with heating only when you need it.
£POA – starting from
ecoTec Plus 2
25 – 32 – 37 - 40
Extremely reliable and displaying all the in-built quality Vaillant is known for, the ecoTEC plus is clearly one of the best combi solutions available today. Available in a range of power outputs, the ecoTEC plus has been remastered to create a stylish, modern and extremely efficient boiler, perfect for any home.
£POA – starting from
Warming London homes since 2007
London's Premium Heating Specialist
Warm & Cool London Heat Pump installation
We all want to save some money and feel like we are doing our bit for the planet. With heat pump technology widely used across Europe ( even in cold countries! ), it is now possible to do both.
There’s a lot more to understand compared to replacing an old gas boiler with a new model. To help you understand the process of Heat Pump Installation and how Warm & Cool London can help you, we have filed everything you need to know on the following page.
Our Heat Pump Packages
Vaillant AroTherm
Air-Water Heat Pump
A low carbon heating and hot water solution. Future-proof thanks to the most cutting-edge heat pump technology with natural refrigerant.
Available in the following outputs: 3.5kw, 5kW, 7kW, 10kW and 12kW.
Ideal for retro-fit and new building.
£POA – starting from
Viessmann Vitocal
Air-Water Heat Pump
Advanced inverter-driven compressor ensures exceptional energy efficiency. With a COP of up to 5.0, it delivers high performance and significant energy savings. Versatile system compatibility, ideal for radiators, underfloor heating, and fan coil units. Intuitive smartphone app and smart home integration make temperature control simple and convenient.
Delivers hot water up to 70°C, meeting modern heating demands and preparing for future low-carbon standards. Compact and lightweight design allows for flexible installation in a wide range of properties.
£POA – starting from
Daikin Altherma 3
Air-Water Heat Pump
High-performance compressor with Bluevolution technology offers excellent efficiency. Achieves energy savings with a COP of up to 5.1 for reliable and eco-friendly heating.
Compatible with radiators, underfloor heating, and fan coil units. Simple control via intuitive user interface or smart app for easy operation.
Delivers hot water temperatures up to 70°C. Compact, space-saving design ensures quick and straightforward installation.
£POA – starting from
Warming London homes since 2007
London's Premium Cooling Specialist
Air Con Installation & Servicing, London
Warm & Cool London Air Con Installation
Heavy Dimond
Air Conditioning
Inverter technology delivers efficient, low-energy cooling and heating with smart climate control. Uses R32 refrigerant to minimise environmental impact.
Available in capacities from 1.5kW to 5.0kW, ideal for living rooms, bedrooms, or open-plan spaces in modern homes.
Award-winning, compact design with a sleek matte finish available in white, silver, or black wood – blending seamlessly into any contemporary interior.
Whisper-quiet performance from just 19dB(A), combined with intelligent sensors and advanced airflow features for precise, even temperature control and superior comfort.
£POA – starting from
Shoari Edge
Air Conditioning
Inverter-driven system delivers efficient, low-energy cooling and heating with reduced running costs. Uses R32 refrigerant for improved energy efficiency and lower global warming potential.
Available in a wide range of outputs from 2.0kW to 7.0kW cooling and up to 8.0kW heating—ideal for anything from single rooms to larger open-plan spaces.
Sleek, matte-finish design blends easily into any modern interior. Compact indoor units make installation simple, even in tighter spaces.
Quiet, powerful, and built with Toshiba’s trusted reliability—operating as low as 19dB(A) indoors for long-lasting, unobtrusive comfort.
£POA – starting from
Stylish
Air Conditioning
High-performance compressor with Bluevolution technology offers excellent efficiency. Achieves energy savings with a COP of up to 5.1 for reliable and eco-friendly heating.
Compatible with radiators, underfloor heating, and fan coil units. Simple control via intuitive user interface or smart app for easy operation.
Delivers hot water temperatures up to 70°C. Compact, space-saving design ensures quick and straightforward installation.
£POA – starting from
Warm & Cool London working with the UK's most trusted boiler, heat pump & air con brands
London's 24 hour boiler, heat pump & air con assistant
24 hour boiler support?
Meet Alaix, she knows her stuff..
Meet Alaix. She might be new here, but she is very helpful and loves helping the good peeps of London find the answers they need quickly.
She works late and at weekends and can help you book a service, boiler survey, or customer service call. You will find her in the chat box at the bottom of the screen.
CLICK ON THE BOX That looks like this to chat with Alaix 24/7
Warm & Cool London Boiler Servicing & Boiler Plans
London Boiler Service
Keep your warranty in place with the Boiler Safety & Performance Inspection(Boilers with Warranty / Guarantee)
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Test all safety devices
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Flue gas analysis
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Gas leaks
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Gas Consumption
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Condensate Trap
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Inspect for water damage
London Boiler Plan
Inc Homeowners Gas Safety service parts system protection(Boilers with Warranty / Guarantee)
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Inc WCL London Boiler Service
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Test all safety devices
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Extended Phone/ Video Support
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Parts - Gaskets, Seals, Electrodes
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Chemical test & re-dosing
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Water Connections