Site Survey & Quote
We assess your space, heat load, and requirements to recommend the perfect system with a clear, upfront quote.
Perfect Climate Control for London Homes & Businesses
Expert installation, rapid repairs, and reliable maintenance. Stay cool in summer and warm in winter with Wasser Group.
Certified Partners & Installers:
London Air Conditioning Services
Is your office too hot? Sleeping poorly in the summer heat? Or has your system unexpectedly broken down?
Poor air conditioning disrupts your life and your business. We provide fast, energy-efficient, and whisper-quiet solutions tailored exactly to your space.
Who We Help
Homes & Flats
Stay comfortable year-round with quiet, efficient systems designed for your home.
Offices
Create a productive environment for your team with reliable cooling.
Shops & Clinics
Keep customers and staff comfortable in every season.
Landlords & Property Managers
We handle compliance, certification and ongoing maintenance.
Not Sure What Size Air Conditioner You Need?
Use our quick BTU calculator to get a recommendation based on room size, ceiling height, sunlight, insulation and usage.
- ✓ Instant recommendation
- ✓ Takes less than 60 seconds
Why the Right Size Unit Matters
Too Small
Struggles to cool the space, runs constantly, uses more energy and wears out faster.
Too Large
Short cycles on and off, causes humidity issues and wastes energy and money.
Just Right
Better comfort, lower running costs and a longer-lasting, reliable system.
Common Air Conditioning Problems We Fix
AC Not Cooling Property
Water Leaks & Drips
Bad Odours & Musty Smells
Noisy or Vibrating Units
Weak Airflow or Hot Spots
Error Codes & Fault Lights
Thermostat Not Working
Emergency Breakdowns
How It Works
Expert Installation
Our F-Gas certified engineers install your system cleanly and efficiently with minimal disruption.
Climate Perfection
Enjoy your perfectly cooled or heated space, backed by comprehensive warranties and ongoing support.
Why Choose Wasser Group?
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Fully Accredited REFCOM F-Gas certified and fully insured for your peace of mind.
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Clear, Upfront Pricing No hidden fees. You know exactly what you'll pay.
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Exceptional Reviews Highly rated on Google by homeowners and businesses across London.
★★★★★
"Professional, efficient and extremely tidy."
"Our office is finally comfortable all year round. The Wasser team was fantastic from survey to installation."
- Verified London Customer
Frequently Asked Questions
How much does air conditioning installation cost? +
Costs vary depending on the size of the room, the type of unit (wall mounted vs concealed), and the complexity of the installation. We offer free, no-obligation site surveys to provide you with an exact, upfront quote.
How long does installation take? +
A standard single-split system in a home or office can usually be installed in just one day. Larger commercial VRF systems take longer, which we will outline clearly in your installation plan.
Do you offer emergency AC repair? +
Yes, we provide fast emergency callouts across London for breakdowns, especially critical for server rooms, clinics, and offices during heatwaves.
Do I need an AC service every year? +
Yes. Annual servicing ensures your system runs efficiently, prevents bad odours, and is often a requirement to keep manufacturer warranties valid. Commercial systems with certain amounts of refrigerant legally require annual F-Gas checks.
Air Conditioning Services Across London
Proudly serving North London, East London, Central London and all surrounding areas.
Ready to Upgrade Your Comfort?
Contact our team today to book a survey or request an emergency callout.