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Heat recovery

Turn the heat your site already rejects into useful energy.

Manufacturing lines, data centres, cooling plant and many other processes throw heat away all day. Our commercial heat-recovery systems capture that energy and put it back to work — as space heating, hot water or process pre-heat on the same site.

20+ years' experience 4,000+ systems installed In-house design and delivery
20+
Years designing heat-pump systems
4,000+
Systems installed since 2006
In-house
Design, installation and commissioning
MCS
Certified contractor
How it works

From waste stream to working heat, in four steps.

Heat recovery captures thermal energy that would otherwise be lost and repurposes it for heating, hot water or pre-heating on the same site.

Waste heat is identified

Manufacturing, data centres, cooling systems and many other processes generate excess heat as a by-product. We survey the site to find it.

A heat pump captures it

A MasterTherm ground source or air source heat pump absorbs the waste thermal energy through a heat exchanger.

Temperature is lifted

The compressor raises the recovered heat to a usable 35–80°C — suitable for space heating, hot water or process pre-heat.

Energy is used or stored

The recovered energy feeds heating, hot water or pre-heating. Surplus heat can be held in thermal storage, such as a buffer tank, for later use where the system is designed for it.

Commercial plant room with a row of MasterTherm heat pumps, buffer tanks and insulated pipework
Equipment

Specialist units built for recovery duty.

Alongside our standard range, MasterTherm's AquaMaster models are designed specifically for heat recovery, handling wider conditions than a standard ground source heat pump.

  • AquaMaster 52kW and 78kW

    Purpose-built recovery units achieving a Coefficient of Performance (COP) of up to 6.5 at W40/W65 — 6.5kW of useful heat per kW of electricity at that operating point.

  • Wide operating envelope

    Source inlet temperatures from 0–45°C, load outlet temperatures of 35–80°C.

  • Cascade configurations

    Multiple units combine for capacities beyond 1,000kW.

  • Remote monitoring

    Smart controls and remote supervision through MasterTherm Online.

Where it applies

Wherever a site heats and cools, there is heat to recover.

MasterTherm’s heat-recovery equipment is designed for commercial and industrial duties. We assess the source, demand and operating temperatures for each proposed installation.

Manufacturing & processing

Process lines, compressors and cooling water reject heat continuously — a steady source for space heating and process pre-heat.

Data centres & server rooms

IT loads reject heat around the clock. Recovery is designed around the cooling duty, never at its expense.

Explore data centres

Food, drink & breweries

Refrigeration, brewing and food production create warm streams that can pre-heat water the same processes then consume.

Metal, chemical & plastics

Galvanic treatment, chemical processes and plastics production run hot — recovered heat offsets the energy they buy back in.

Agriculture & milking parlours

Milk cooling is a textbook recovery source: the heat taken out of milk becomes the hot water the parlour needs for washing down.

Hotels & office buildings

Kitchens, laundries and server rooms reject heat while bedrooms and hot-water systems demand it — often at the same hour.

Signature project work

Mine-water heat recovery.

At Lindsay near Ammanford, the Mining Remediation Authority developed Wales’s first commercial mine-water heat scheme in partnership with Thermal Earth, with Innovate UK funding. Submerged heat exchangers recover heat for our industrial unit and offices.

It is the same discipline as any recovery project: characterise the source, match it to a real demand, and lift the temperature only as far as the demand requires.

Explore mine-water heat recovery
Questions

Heat recovery, answered.

Heat recovery captures valuable thermal energy that would otherwise be wasted and puts it to productive use. Excess heat from a manufacturing process, for example, can be recovered to provide space heating or hot water in an adjacent building.

Heat pumps on recovery duty typically achieve a coefficient of performance of 4 to 6 — four to six kilowatts of useful heat per kilowatt of electricity. The specialist AquaMaster models reach a COP of up to 6.5 at their W40/W65 rating point. Actual performance depends on the source and delivery temperatures of your site.

The AquaMaster recovery models accept source inlet temperatures from 0–45°C and deliver load outlet temperatures of 35–80°C — enough for space heating, domestic hot water and many process pre-heating applications.

Recovered heat with no simultaneous demand can be held in thermal storage, such as a buffer tank, for later use. Whether storage is justified depends on the size and timing of the source and the demand.

Part of our commercial capability

Heat recovery sits alongside heating, cooling and system design in one accountable commercial team.

Explore commercial systems

Every cooling load is a heat source

Cooling and recovery are two sides of the same system — the heat you reject is the heat you could reuse.

Explore cooling systems

Show us what your site throws away.

Tell us what rejects heat, what could use it, and the temperatures and hours involved. Our engineers will tell you whether recovery stacks up — and what to measure next.