Monobloc heat pumps
A single, self-contained air-to-water heat pump unit installed on the outside of the property, connecting to the heating system and hot water cylinder in the dwelling.
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Dimplex’s System H monobloc heat pump is a propane (R290) system with high modulation capacity that provides new dwellings with hot water as well as space heating, maximising thermodynamic performance. System H consists of an outdoor unit and a dual-service indoor cylinder to deliver hot water and space heating to the dwelling. The indoor unit also houses smart controls, a 170l domestic hot water tank and 3kW programmable electric backup. Invertor technology modulates output to demand, making it ideally suited to new compliance standards for dwellings with low-heating demand.
Benefits
Efficient operation
Air-to-water monobloc heat pump offers efficient and reliable output, with an SCOP of up to 4.83 (W35).
Low operating temperature limits
Output of up to 70°C when the external temperature is down to -20°C.
Delivering electrical savings
Both 6kW and 8kW output sizes require a simple power supply of just 16A.
No specialist installer required
Simplified installation with just flow and return, and electrical connections. Installers don’t need to be refrigerant or gas certified.
Designed for quiet operation
Acoustically non-intrusive in high-density developments, thanks to adjustable feet on anti-vibration pads to reduce operational noise.
Product specification
Our monobloc heat pump is often specified alongside mechanical ventilation and is available in two sizes:
Product model | Refridgerant / weight | Heating water outlet range | Heat output/COP A7/W35 | SCOP W35 | Ambient conditions operating limits | Indoor/Outdoor unit Size WxHxD(mm) |
---|---|---|---|---|---|---|
System H 6kW | R 290/0.42 | 7-70 | 4.06 kW/4.73 | 4.75 | -20°C to +40°C | 571x1725x542 / 1035x820x450 |
System H 8kW | R 290/0.60 | 7-70 | 5.72 kW/4.85 | 4.83 | -20°C to +40°C | 571x1725x542 / 1035x1075x450 |



A technical guide to the specification of heat pumps for dwellings and multi-occupancy developments
This white paper aims to provide h a summary of the different considerations that will have an impact on the specification of heat pumps, heat pump-based systems and complementary technologies for large residential and mixed-use developments
CPDs
We offer a range of CPD UK and CIBSE accredited heat pump CPDs that cover how they work and that look at detailed SAP modelling information to help with regulatory compliance.
Case studies
Read about a wide variety of projects where Dimplex heat pump technology has been installed, showcasing how the system performs in use.
Compliance
A library of blog posts and technical guides to support you in specifying Dimplex heat pump technology as well as offering simplified routes to compliance.