Air-con that just works.
Installed properly.
We design and install air conditioning and heat pump systems from leading manufacturers like LG, Samsung, Worcester, Midea, Daikin and Mitsubishi — Across North East. Honest pricing, Tidy installs, Friendly aftercare.
Complete climate comfort, expertly installed.
From single-room split systems to full commercial fit-outs — Onflo delivers tidy installs, proper paperwork, and friendly aftercare.
Air Conditioning Installation
Wall, ceiling cassette, and multi-split systems for homes and offices.
Heating & Heat Pumps
Year-round comfort with energy-saving heat pump technology.
Servicing & F-Gas
Annual servicing, leak checks, and regulated F-Gas refrigerant work.
Domestic Projects
Single-room comfort to whole-home climate control.
Commercial Fit-outs
Offices, shops, salons and server rooms across the North East.
Manufacturer Warranties
Up to 7-year warranties on accredited installations.
Sleek units that fit your home.
Modern wall-mounted systems are compact, quiet and unobtrusive — designed to blend into any room.
Right-sized for your space.
Undersized units run flat-out and cost more. Oversized units cycle on and off and feel clammy. We'll measure properly and recommend exactly the right kW for each room.
Bedrooms, home offices and snug spaces up to ~15m².
"The perfect bedroom breeze."
Lounges, mid-size bedrooms and salons up to ~25m².
"Comfortable from corner to corner."
Open-plan living spaces and retail areas up to ~40m².
"Powerful, even cooling — fast."
Offices, server rooms and large open-plan areas.
"Built for the toughest spaces."
Get an estimated quote in 60 seconds
Tell us about your space and we'll show you an estimated installation cost — no email required until you're ready.
Budget to premium — your choice.
We're brand-agnostic. We'll recommend the right system for your space, usage and budget — never the one with the biggest commission.
Whisper-quiet inverter range with smart controls.
Sleek WindFree™ models with strong warranties.
Proven heating heritage, rated for UK climates.
Industry-leading efficiency, built to last decades.
One fixed price. Everything covered.
No surprise extras, no add-ons mid-job. Your Onflo quote includes the full install, materials, commissioning paperwork and warranty registration — so you're comfortable from day one.
- Indoor wall-mounted unit (or cassette)
- External condenser unit
- All copper pipework and electrical wiring
- Wireless remote and smart control
- Full commissioning & F-Gas paperwork
- Warranty registration
Spread the cost with Klarna.
Comfort shouldn't have to wait. Pay monthly for your air-con or heating install with flexible Klarna finance — quick application, soft credit check, instant decision.
- Pay in 3 interest-free instalments
- Or spread over 6–36 months
- Soft credit check — no impact
- Instant decision at checkout
Finance subject to status and eligibility. T&Cs apply. 18+ UK residents only.
Your home's climate, finally under your control.
Cools in summer
Sleep, work and relax through every heatwave.
Heats in winter
Heat pump tech — up to 4× more efficient than electric heating.
Cleaner air
Built-in filters trap dust, pollen and allergens.
Lower bills
Inverter technology slashes running costs vs. radiators.
Whisper-quiet
Modern units run from just 19 dB(A) — quieter than a whisper.
Year-round comfort
One smart system for every season.
Your climate, in your pocket.
Systems we install can come with full smart-app control — adjust temperature, modes and schedules from anywhere. Works with iOS, Android and most smart home platforms.
- Remote temperature control
- Daily & weekly schedules
- Multi-room zoning
- Energy usage insights
A straightforward path to comfort.
Free survey
We visit, measure, and listen to what matters to you.
Tailored quote
Clear options across budget, mid-range and premium systems.
Tidy install
Most homes done in 1–2 days, dust-sheeted and respectful.
Aftercare
Commissioning paperwork, warranty registration and service plans.
Trusted across the North East.
"Onflo installed a Mitsubishi system across our home — tidy, professional and finished in two days. The temperature is perfect every room."
"Fantastic from quote to install. Honest advice on which brand suited our budget, no pushy upsells. Office is finally comfortable."
"Booked a survey on Monday, installed by Friday. Quiet, sleek, and the heating mode has cut our winter bills. Highly recommend."
Serving the whole North East.
Based in Durham, we travel across Tyne & Wear, County Durham, Northumberland and Teesside — from city centres to coastal towns and rural villages.
Tell us about your space.
Fill in the form and we'll be in touch within one working day to arrange a free, no-obligation survey across Durham, Newcastle, Sunderland, Gateshead, Northumberland and the wider North East.