In partnership with Quantum Gas Engineers

Welcome to Warm & Cool London


Heating & Cooling Experts

Boilers

New boiler installation, servicing & maintenance with Warm & Cool London

Heat Pumps

Heat Pumps Installations & service with Warm & Cool London

Air Conditioning

Domestic & commercial air conditioning installation & maintenance.

WCL - Man pointing denim shirt

Meet Londons's Premium Heating & Cooling Specialists.
Check what other out what other Londoners say about our services.

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Read what other locals say about their Warm & Cool London journey
Warm & Cool London

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.

Leading boiler brands
Extended guarantees
5 star customer service
Yes, we service boilers too!
Understanding Boiler Service & repairs Final
Warm & Cool London

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

eco fit pure

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

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 plus2

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

Vaillant Heat Pump outside
Warm & Cool London

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.

Leading boiler brands, such as Vaillant, Toshiba & Daikin
Heat Geek accredited
Extended guarantees
5 star customer service
Yes, we service heat pumps too!

Our Heat Pump Packages

Vaillant HP

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.

Outstanding quality and durability. Eligible for the Boiler Upgrade Scheme Grant.
 
 
 

£POA – starting from

Viessmann HP

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 HP

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

Black air con
Warm & Cool London

Warming London homes since 2007

London's Premium Cooling Specialist

Air Con Installation & Servicing, London

Much like our heating systems, Warm and Cool London only deals with 
top quality, reliable manufacturers for our Air Conditioning units.

Choose from a range of High-end systems by leading manufacturers such as Daikin, Mitsubishi Heavy Industries & Toshiba. Click below to find more info about the high-end Air Conditioning units we offer to our London customers.
Leading boiler brands
Extended guarantees
5 star customer service
Yes, we service air conditioning too!

Warm & Cool London Air Con Installation

Mitsubishi AC

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

Toshiba AC

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

Daikin HP

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

AI
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)
£ 150 +VAT Annual safety inspection
  • Test all safety devices
  • Flue gas analysis
  • Gas leaks
  • Gas Consumption
  • Condensate Trap
  • Inspect for water damage
Service only

London Boiler Plan

Inc Homeowners Gas Safety service parts system protection
(Boilers with Warranty / Guarantee)
£ 200 +VAT Extra support & full boiler service
  • Inc WCL London Boiler Service
  • Test all safety devices
  • Extended Phone/ Video Support
  • Parts - Gaskets, Seals, Electrodes
  • Chemical test & re-dosing
  • Water Connections
Extra care

Welcome to Warm & Cool London

Based in Central London, our team of experts draw on their experience to offer the highest level of workmanship and customer service, which have always served to set us apart from our competitors.
 
As a business, we have over 30 years’ worth of experience in the heating and air conditioning installation sector. Our team of installation professionals draw their high level of proficiency from experience at both OEM and manufacturer levels, whilst also receiving exclusive training from Europe’s top heating and plumbing manufacturers.