Infrastructure Systems

Engineered Hot Water
Solutions
for Buildings

SIRAC designs and delivers integrated hot water systems for hospitals, hotels, residential towers, large developments and residential homes, from initial sizing through to full commissioning.

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20+
Years of Delivery Experience
500+
Large Building Installations
6
Industries Served
100%
Independent & Unbiased
Trusted by
Marriott Hotels Holiday Inn Group Protea Hotels Capital Hotel Group Premier Hotels Ithemba Properties Rawson Properties Amdec Group Netcare Hospitals University of Cape Town Rhodes University Radisson Hotels Stellenbosch University Rabie Properties
What We Deliver

Complete DHW Infrastructure.
From Design to Commissioning

Hot water is mission-critical infrastructure. We don't supply components. We deliver complete, engineered systems designed around your building's specific demands.

01

System Design

Thermal demand modelling, equipment selection, plant room layout and full schematic design tailored to your building type and occupancy profile.

02

Supply & Integration

Sourcing and supply of heat pumps, thermal storage, pumping assemblies and control systems, specified, manufactured and coordinated as a complete package.

03

Commissioning

Full system commissioning, performance verification, Legionella compliance checks and operator handover, ensuring the system works exactly as designed from day one.

04

Ongoing Support

Post-commissioning technical support, system optimisation, maintenance guidance and engineering assistance for the operational lifecycle of your installation.

System Architecture

How a SIRAC System
Is Structured

Every installation integrates four core layers. Generation, storage, distribution and controls, engineered to work as a single, reliable system.

Heat Pumps
Air / Ground Source Generation
→
Thermal Storage
Buffer & Volume Tanks
→
Pumping & Controls
Variable Speed, BMS Integration
→
Distribution
Secondary Loops & Points of Use
Reliability

Redundant primary generation and storage prevent single points of failure across high-demand facilities.

Sanitation

Temperature-controlled distribution and periodic thermal disinfection cycles manage Legionella risk.

Lifecycle Cost

Heat pump-led systems with optimised storage deliver significantly lower energy costs over the asset's life.

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Our Products

Engineered Equipment
for Hot Water at Scale

The core product categories we specify, supply and commission. Every item is selected as part of a complete system design, never in isolation.

Bank of SIRAC commercial air-source heat pumps installed on a rooftop plant deck

Heat Pumps

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

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SIRAC THERMOCUBE heat accumulator storage vessel with integrated heat pump and stainless steel pipework

Water Storage

Patented THERMOCUBE and THERMOTUBE heat accumulator storage vessels.

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SIRAC flat-plate solar thermal collectors mounted alongside PV panels on a rooftop with Johannesburg skyline

Solar Thermal

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

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SIRAC cascade bank of high-efficiency gas water heaters with manifold pipework on a commercial rooftop

Gas Heating

High-efficiency gas condensing and cascade boiler systems for rapid recovery.

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Vertical multistage pressure booster pump set with backup water storage tanks in a plant room

Pumping & Protection

SIRAC Pump Guard controllers with sensor-free dry run protection.

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Industries

Built for Buildings
That Cannot Afford Downtime

Each sector has distinct hot water demands, regulatory requirements and risk profiles. Our systems are designed specifically for your building type.

Healthcare

Hospitals, clinics and care facilities require uninterrupted supply, strict Legionella controls and full system redundancy.

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Hotels & Hospitality

High-volume guest demand, energy efficiency targets and 24/7 uptime requirements demand purpose-built infrastructure.

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High-Rise Residential

Centralised plant serving multiple storeys with pressure zoning, communal heat metering and efficient distribution.

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Student Housing

Seasonal occupancy patterns, high simultaneous demand and cost-per-unit efficiency are the defining challenges.

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Social Housing

Long-term lifecycle cost, simplified maintenance and regulatory compliance for local authority and housing association stock.

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Commercial Buildings

Offices, mixed-use and retail developments with varied occupancy profiles and modern sustainability reporting requirements.

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Featured Projects

Delivered
Across Every Sector

SIRAC THERMOCUBE plant room installation for Milpark Hospital hot water
Healthcare
22,500 L
THERMOCUBE Storage

Milpark Hospital, Johannesburg

In collaboration with Spoormaker & Partners and Airgro, SIRAC designed, supplied and commissioned 3 x 7,500L THERMOCUBE™ Heat Accumulator sets which act as a junction for multiple heat sources — chiller heat recovery and 2 x 100 kW High Temperature specific SIRAC Heat Pumps.

Capital on the Park hotel Sandton, SIRAC hot water system
Hotels
60,000 L/day
Daily Hot Water Volume

Capital on the Park, Sandton

The system was designed to accommodate Highveld winter ambient conditions between −3°C and +40°C. With an expected peak occupancy of 644 people, the Hybrid Plant provides 60,000 litres of hot water per day.

16 on Bree Cape Town, SIRAC high-rise hot water infrastructure
High-Rise Residential
36 Floors
Cape Town’s Tallest Residential Tower

16 on Bree, Cape Town

At 36 floors, 16 on Bree is Cape Town’s tallest residential tower. In partnership with ER Plumbers and Eckon Consulting Engineers, SIRAC supplied and installed the THERMOCUBE™ Hot Water Heat Accumulators which provide all hot water storage for the apartments.

All Projects
SIRAC engineered plant room design and commissioning
Engineering Support

We Work Directly with Consultants & Developers

SIRAC supports M&E consultants, developers and project managers through every stage of the design and specification process.

  • System sizing and thermal demand modelling
  • Plant room design and layout drawings
  • Equipment performance specifications
  • Tender support and contractor review
  • Commissioning oversight and sign-off
  • Post-installation performance review
Contact Us
Our Position

Objective Design

“SIRAC is not tied to any single product solution. This open mindedness ensures that the systems we design are chosen entirely on engineering merit, for your project, not our margin.”

Our Story

Planning a New Build or Retrofit?

Send us your brief and we'll return a system recommendation within 48 hours.

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