About us
Every heat pump in the UK can cool. Almost none of them do.
We're building the missing piece — fan coil kits that connect to your existing heat pump and give you room-by-room cooling for a fraction of the cost of a split AC system.
The problem
Heat pumps heat brilliantly. But summers are getting hotter.
UK homes with air source heat pumps have a chilled water circuit sitting idle every summer. The heat pump can produce 5°C water — perfect for cooling — but there's no way to get that cooling into the rooms.
Radiators won't work (condensation, no airflow). Split AC systems are expensive to install and redundant when you already have a heat pump. There was no simple, affordable option — until now.
Our solution
One fan coil unit per room. Plug into your heat pump.
Each unit sits in the loft, connects to your heat pump's chilled water circuit, and delivers cool air through a ceiling vent. Load-compensated control is built into every unit — it detects when the heat pump is cooling and activates automatically.
We supply complete kits: fan coil unit, ducting, vents, clamps. Use the kit builder to spec exactly what you need for your room, or buy individual components.
How we work
Built for installers, accessible to homeowners
Installer-first
Our kits are designed for HVAC professionals. Standard fittings, sensible sizing, clear documentation. No proprietary nonsense.
No waste
Buy exactly what you need. The kit builder calculates duct runs and roll quantities. No guesswork, no over-ordering.
Direct pricing
We sell direct. No distributor markups. All prices shown ex-VAT for trade, inc-VAT for homeowners. Bank transfer payment.
No planning permission needed
Already have a heat pump? A split AC would mean a second external unit — which needs planning permission. Our fan coil units are entirely internal. No external equipment, no external alterations, no planning headaches. Perfect for listed buildings and conservation areas.
Learn more about planning rules →Simon Bennett
Founder
I started this because I had a heat pump, a hot upstairs, and no good options. The technology exists — chilled water fan coils are standard in commercial buildings. I'm bringing it to homes.
Company
Warm Energy Labs Ltd
Company No. 14120157
VAT
GB482750081