Helec has over 18 years experience engaging with all aspects of the Heat Pump transition into the mainstream UK HVAC LZC market with the following available Air Source Heat Pump solutions to choose from;


The Strebel S-ASX family of reversible, commercially sized Air Source Heat Pumps offers a wide range of high outputs and performances with maximum stable outlet temperatures up to 68°C – 78°C as well as a choice of three refrigerants (R410A, R454B and R290).

High Temperature Units

Offering stable outlet temperature up to 68°C the S-ASX-VP range (60-100kW) delivers LTHW and DHW using a liquid and vapour injection refrigerant circuit that offers high output, high temperature and high SCOP making it a perfect model for retrofit & new build applications.
The S-ASX-VP i55 (55kW) is also available, with an outlet temperature of 65°C, with an inverter driven compressor enabling outputs to be reached as low as 20kW for periods of lower heat demand.

The S-ASX-NT (60-90kW) is also available offering the benefit of a low GWP of 3, and a high outlet temperature of 72°C, as well as the S-ASX-NTi (25 & 45kW) machines delivering up to 75°C making it the perfect machine to deliver heat source for DHW storage in our calorifiers. For more information, please call the office for sizing advice on 01934 862264.

The S-ASX-LQ (55-90kW) model features a liquid injection circuit and allows stable heat delivery as the VP model albeit with a comparative greater drop-off in power output at lower ambient air temperatures.


Wish to know more?
Call us on 01934 862264 for design advice and budget costs

Are you considering a Hybrid heat pump that can self power?

Self Powered hybrid Heat Pumps from Helec…..coming soon to a plant room near you but here is a little preview…….