Product Range

Engineered Equipment
for Domestic Hot Water
Applications

SIRAC specifies, supplies and commissions the core equipment that powers centralised and residential hot water systems. Every product is selected for performance, reliability and long service life in demanding commercial environments.

Heat Pumps Storage Solar Thermal Water Source HP Gas Heating Pumping

Heat Pumps

Air-source and water-source heat pumps for domestic, commercial, industrial and pool applications.

Water Storage

Patented THERMOCUBE and THERMOTUBE hot water storage systems.

Solar Thermal

Flat-plate and vacuum tube collectors for pre-heat and hybrid systems.

Gas Heating

Compact gas condensing boilers and multi-boiler cascade systems.

Pumping & Protection

Pump Guard controllers for industrial and domestic pump management.
01 / Air-Source Heat Pumps

Air-Source Heat Pumps
for Every Scale

SIRAC heat pumps have a proven track record across South Africa's largest residential, commercial and industrial buildings. Our range covers domestic sanitary hot water, swimming pools and full commercial plant rooms.

SIRAC domestic heat pump delivering hot water to a modern residential bathroom

Domestic

Split & Integrated Heat Pumps

Reduce geyser energy costs by up to 70%. 60°C to 70°C in split or integrated configurations for residential sanitary hot water.

  • High temperature options
  • Split type and Integrated storage options
  • Sanitary Hot water Heating
SIRAC commercial heat pump installed on a city rooftop plant deck

Commercial & Industrial

Cascade Systems

Modular arrays with N+1 redundancy capability and BMS compatibility — serving healthcare, hotels and residential applications with 15+ years of proven performance.

  • Smart system control and BMS integration
  • Scalable capacity and enhanced performance
  • Space saving and dynamic
Swimming pool heated by a SIRAC pool heat pump with titanium heat exchanger

Pool

Swimming Pool Heat Pumps

Designed for residential and commercial sized pools. Titanium heat exchangers resistant to chlorine, salt and acid, heating pool water to 40°C for residential and commercial applications.

  • Inverter compressor Options
  • R32 environmentally friendly refrigerant
  • Heating and Cooling

Manufacturer-Neutral: SIRAC selects and specifies heat pump equipment based on project requirements, not brand obligation. We work with multiple manufacturers to ensure the right product for every application.

Technical Downloads

Heat Pump Specification Sheets

Domestic, commercial and pool models. Full dimensions, performance curves, COP data and integration drawings.

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02 / Water Source Heat Pumps

Water Source Heat Pumps

For commercial buildings requiring simultaneous or seasonal cooling and heating, delivering efficient, balanced system performance.

SIRAC water-source scroll compressor heat pump unit

Scroll Compressor

Scroll Compressor Systems

Water source heat pumps designed for efficient heating and cooling, well suited to standard commercial building applications.

Multiple Scroll Compressors

  • Independent refrigerant circuits for inherent redundancy
  • Accurate capacity control through staged compressor operation
  • High efficiency across varying load conditions
SIRAC water-source screw compressor heat pump for industrial applications

Screw Compressor

Screw Compressor Systems

High-capacity water source heat pumps engineered for large-scale commercial and industrial applications.

Inverter Screw Compressors

  • Variable speed operation for optimised part-load efficiency
  • Stable, continuous output under demanding load profiles
  • Reduced mechanical stress and extended equipment lifespan

System Integration: Water-source units pair with heat recovery loops from chillers, VRV condensers or ground-source fields to deliver DHW generation at exceptional seasonal efficiency.

Technical Downloads

Water-Source Heat Pump Spec Sheets

Scroll and screw compressor models. Capacity tables, efficiency data and integration drawings.

Request Spec Sheets
03 / Water Storage

Patented Hot Water
Storage Systems

SIRAC's THERMOCUBE and THERMOTUBE storage vessels are at the heart of every large-scale DHW system we deliver. Designed and patented in-house, they solve the core challenge of storing and delivering large volumes of sanitised hot water safely and efficiently.

SIRAC THERMOCUBE rectangular heat accumulator vessel installed outdoors with twin heat pump units

Patented

THERMOCUBE

Modular, rectangular hot water storage vessels engineered for large commercial plant rooms. The THERMOCUBE's flat-sided design maximises storage capacity per square metre of plant room floor area.

  • Modular design for scalable storage capacity
  • 316L stainless steel heat exchangers
  • Optimised for plant room space constraints
  • Thermal disinfection compatible
  • Available in multiple capacities
Group of four SIRAC THERMOTUBE cylindrical hot water storage vessels with HOT WATER outlet labels

Patented

THERMOTUBE

Cylindrical hot water storage vessels for applications where traditional tank geometry is preferred. The THERMOTUBE delivers the same heat exchange technology in a conventional footprint.

  • Cylindrical design for standard installations
  • 316L stainless steel heat exchangers
  • Anti-stratification and disinfection capable
  • Suitable for retrofit and new-build
  • Pressure-regulated mains supply

How It Works

The stored heated water never leaves the tank. Potable water at regulated mains pressure passes through purpose-made 316L stainless steel heat exchangers suspended within the hot water body. Energy transfers from the stored water through the heat exchanger wall to the potable supply. This heated, sanitised water is then available for distribution throughout the building.

Technical Downloads

THERMOCUBE & THERMOTUBE Spec Sheets

Patented storage vessel specifications, capacities, heat exchanger ratings and installation drawings.

Request Spec Sheets
04 / Solar Thermal

Solar Pre-Heat
& Hybrid Systems

Solar thermal systems are the ideal complement to heat pump-led DHW infrastructure. By harnessing freely available solar energy, they reduce primary generation load, lower operating costs and deliver faster return on investment.

Two SIRAC flat-plate solar thermal collectors mounted on adjustable frames

Flat-Plate Collectors

Robust, Cost-Effective Solar Harvesting

Flat-plate solar thermal collectors provide reliable pre-heating for DHW systems. Durable construction, low maintenance requirements and proven performance across Southern Africa's climate conditions make them the standard choice for commercial installations.

Two SIRAC vacuum tube solar thermal collector arrays on adjustable mounting frames

Vacuum Tube Collectors

High-Efficiency for Demanding Applications

Vacuum tube technology delivers higher efficiency per square metre, particularly in lower ambient temperatures or where roof space is constrained. Ideal for hospital, hotel and multi-storey residential applications requiring maximum energy harvest.

Hybrid System Design: SIRAC designs integrated systems where solar thermal pre-heat works alongside heat pumps and backup plant. The solar array offsets primary generation load during peak sun hours, while the heat pump array handles overnight recovery and cloudy-day demand. This combined approach delivers the lowest possible lifecycle cost.

Technical Downloads

Solar Thermal Specification Sheets

Vacuum tube collector ratings, manifold sizing, mounting details and hybrid integration schematics.

Request Spec Sheets
05 / Gas Heating

Gas Condensing &
Cascade Boiler Systems

Gas-fired generation provides the convenience, control and rapid response needed for new builds, modernisation projects and hybrid plant rooms. Our specified boiler range covers domestic, multi-residential and commercial scale with high seasonal efficiency.

SIRAC wall-mounted gas condensing boilers installed in a plant room with manifold pipework

Compact & Wall-Mounted

Gas Condensing Boilers

High-efficiency, space-saving boilers designed for residential and mixed-use developments.

Wall-Mounted Condensing Systems

  • Compact footprint for apartments, homes, and constrained plant rooms
  • High seasonal efficiency through condensing heat recovery
  • Compatible with Natural Gas and LPG for flexible installation
SIRAC cascade gas boiler array of six wall-mounted units on a rooftop manifold

Cascade Systems

Gas Condensing Boilers

High-output boiler arrays designed for commercial and multi-residential applications requiring reliable, large-volume hot water generation.

Cascade Boiler Systems

  • Staged operation maintains high efficiency across wide load ranges
  • Rapid recovery and direct heating capability for peak demand periods
  • Built-in redundancy ensures continuous operation and system resilience

Hybrid Integration: Gas heating works particularly well alongside SIRAC heat pump and solar thermal systems. The heat pump array handles baseload efficiency while solar thermal offsets peak demand. SIRAC pioneered the hybrid solution of heat accumulator storage with gas-fuelled heating to deliver high-comfort, high-efficiency hot water at scale.

Technical Downloads

Gas Boiler Specification Sheets

Condensing and cascade boiler models. Combustion data, efficiency curves, flue sizing and plant room layouts.

Request Spec Sheets
06 / Pumping & Protection

Pump Guard
Controller Range

The SIRAC Pump Guard range provides intelligent pump management for industrial and domestic applications. Dry running is a major cause of pump failure; Pump Guard provides dry run protection without the need for sensors.

SIRAC Smart Pump Controller with LCD display, START/STOP/VIEW controls and red status beacon

Pump Guard Controllers

Intelligent pump protection with real-time fault display, historical data retention and IP54-rated enclosures. Available for single, dual and multi-pump applications across single-phase and three-phase supply.

Triple vertical multistage pressure booster pump set with control panel and blue manifold pipework

Complete Pump Systems

Custom and standard water pumping systems distributing Grundfos and WILO ranges. Lift, jockey, booster, fire, circulation and sewage pump sets with full national service backup.

Sensor-Free Dry Run Protection

Detects dry-run conditions without external sensors, preventing the most common cause of catastrophic pump failure in commercial installations.

Multi-Application Controller

Level control, drainage, pressure boosting and transfer applications are configured easily via function switches. One controller platform for multiple use cases.

Automatic Calibration

Simple push-button calibration sets overload parameters automatically. IP54-rated enclosures are suitable for indoor and outdoor applications.

Built-In Protection Functions

Under/Over Voltage

Overload

Dry Run (Sensor-Free)

Pump Stalled

Open Phase

Phase Unbalance

Phase Reversal

Over Temperature

Technical Downloads

Pump Guard & Pump System Spec Sheets

Controller models, protection features, Grundfos and WILO pump set configurations and wiring diagrams.

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Why SIRAC Equipment

Specified for the System,
Not the Catalogue

Every piece of equipment SIRAC supplies is selected as part of a complete system design. We do not sell products in isolation.

System-Level Engineering

Every product is specified within the context of a complete DHW system design. Generation, storage, distribution and controls are designed to work together.

Manufacturer Independent

SIRAC is not tied to any single manufacturer. We select and specify equipment based on project requirements, performance data and proven field reliability.

Commissioning & Support

Every system we supply comes with full commissioning, handover documentation and ongoing technical support from our Cape Town and Johannesburg offices.

Equipment Enquiry

Need a Product Specification
or Equipment Schedule?

Send us your project brief and our engineers will return a recommended equipment schedule matched to your building requirements.

Contact Us Request a Quote