Engineering
Services
Water heaters and heat pump Central plant retrofit Rooftop energy audit High-temperature heat pumps Energy audit model Water purification plant

Harare · Zimbabwe

Advanced water
solutions.

Atmospheric water generators
Book an energy audit Our services Find the right solution

Authorised partners

AERCO logo
Lync by WATTS logo
PVI logo

AERCO

Trooper Water Solutions

Forbes Marshall

Lync

PVI

Aguaman

What we do

Every HVAC discipline. One expert team.

01

Energy Audits

Detailed site surveys, metering and reports that pinpoint where your building loses energy and money.

02

Heating

Design, supply and installation of Heat pumps, Gas fired water Heaters, solar water heaters, calorifiers, condensing boilers and electric water heaters.

03

Cooling

Design, supply, installation and maintenance of chillers, air handling units (AHUs), fan coil units and air-conditioning systems.

04

Retrofit Projects

Upgrading ageing plant rooms with high-efficiency equipment, with minimal disruption to operations.

05

HVAC Consultancy

Independent engineering advice, system design, specifications and project oversight.

06

Atmospheric Water Generators

Machines that draw clean drinking water straight from the air — ideal where supply is unreliable.

07

Water Purification Systems

Water filtration and treatment systems for homes, offices, hospitals and industry.

08

Steam Boilers & Steam Networks

Supply, installation and maintenance of steam boilers, plus design and upgrades of steam distribution and condensate return networks.

09

Instruments & Gaskets

Supply of pressure gauges, temperature gauges, steam gaskets and rubber gaskets for boilers, plant rooms and pipework.

10

Valves

Gate valves, ball valves, butterfly valves, non-return valves (NRVs), double regulating valves (DRVs) and pressure-independent control valves (PICVs).

11

Pumps & Pressurisation Units

Supply, installation and maintenance of circulation pumps, booster sets and pressurisation units for heating, cooling and water systems.

12

Rubber Insulation & HVAC Consumables

Supply of closed-cell rubber pipe and sheet insulation, adhesives, tapes, sealants, fixings and other HVAC consumables.

13

Legionella Prevention

Water-storage risk assessments and advice on system design, cleaning, treatment and monitoring to reduce Legionella growth and exposure.

Legionella prevention

Oneflow Engineering is your solution for legionella prevention.

Legionella bacteria grow in poorly managed hot-water systems, cooling towers and storage tanks. Breathing in contaminated water droplets causes Legionnaires' disease, a severe and potentially fatal form of pneumonia. We design, upgrade and maintain systems that keep water safe for staff, patients and guests.

Request a legionella assessment
Illustration of Legionella bacteria inside a water pipe
Legionella bacteria in a water pipe

  • Risk assessment

    Site surveys of hot and cold water systems to find where bacteria can grow.

  • Temperature control

    Water heaters and mixing valves that store hot water above 60°C and deliver it safely.

  • Water treatment

    AOP, filtration and softening that stop scale and biofilm building up.

  • Monitoring & maintenance

    Regular checks, flushing and sampling to keep systems compliant.
Atmospheric water generator

Water from air

Atmospheric water generators & water purification systems.

Our atmospheric water generators and purification systems, backed by Trooper Water Solutions, deliver clean water independent of municipal supply — for homes, schools, clinics and businesses.

Get a water quote
Engineering Services

One call. One team.
Every HVAC need.

The one-stop HVAC shop you've been searching for.

HVAC & water needs advisor

Office

Gelfand House
56 Speke Ave
Harare, Zimbabwe
info@oneflowengineeringservices.com WhatsApp: +971 52 554 6327

Partners

AERCO
Trooper Water Solutions
Forbes Marshall
Lync
PVI
Aguaman
Proudly Zimbabwean
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