Heat Pumps — Air-Source, Water-Source & High-Temperature Industrial
Heat pumps deliver heating (and often cooling) at 3–6× the efficiency of gas boilers by moving heat instead of generating it. High-temperature industrial heat pumps now reach 90–160 °C water — a decarbonisation lever for food, dairy, pharma and district heating.
What it is & where it's used
A heat pump uses a vapour-compression cycle to lift heat from a low-temperature source (air, water, waste heat, geothermal) to a higher-temperature sink (space heating, DHW, process water, steam). Reversible units also provide cooling.
- • Commercial HVAC and hotels
- • District heating networks
- • Dairy pasteurisation and CIP
- • Food drying and evaporation
- • Pharmaceutical process water
- • Data centre heat reuse
- • Space heating 35–55 °C
- • DHW / process water 55–90 °C
- • High-temperature process 90–160 °C
- • Simultaneous heating + cooling (4-pipe)
- • Waste-heat recovery to steam or hot water
- • COP 3.0–6.0 replaces gas boilers (efficiency 85–95%)
- • Direct CO₂ reduction and Scope-1 elimination
- • Combined heat + cold from one machine (huge industrial saving)
- • Eligible for green financing, grants and carbon credits in many markets
- • High CAPEX vs boilers — 3–8× per kWth
- • Requires heat source (low-grade heat, water, borehole field)
- • Refrigerant compliance and safety zones (NH₃ ATEX, HC flammability)
Typical project sizes: 5 kWth residential up to 30 MWth district / industrial modules.
Air-Source Heat Pump vs High-Temperature Industrial Heat Pump
| Criterion | Air-Source Heat Pump | High-Temperature Industrial Heat Pump |
|---|---|---|
| Delivery temperature | 35–75 °C | 80–160 °C (steam-replacement class) |
| COP (design) | 2.8–4.2 | 2.5–4.0 depending on lift |
| Refrigerant | R-32, R-290 (propane), R-454B | R-717 (NH₃), R-744 (CO₂), R-1234ze, R-600a |
| Best for | Space heating, DHW, hotels, offices | Dairy, food, chemical, district heating |
| CAPEX | USD 700–1,600 / kWth | USD 2,000–5,500 / kWth |
| Payback vs gas | 5–9 years | 3–7 years with waste-heat source |
| Decarbonisation impact | 60–80% CO₂ cut vs gas boiler | 70–95% CO₂ cut on process heat |
How to evaluate
- 01Model the actual load duration curve — heat pump economics collapse if the plant runs only 500 h/year.
- 02Prioritise waste-heat sources: refrigeration condenser, wastewater, exhaust — they double COP vs air source.
- 03For process heat, size the peaking capacity separately (electric or gas topping boiler for <100 h/year peaks).
- 04Insist on measured, not simulated, SCOP with your source/sink profile.
- 05Specify low-GWP refrigerants (NH₃, CO₂, propane, HFOs) — HFC-based industrial HPs face regulatory risk.
- 06Confirm safety and code compliance (NH₃ = ATEX + machine room; propane = charge limits + ventilation).
- 07Bundle with a control-and-metering package to prove savings for green loans / carbon accounting.
Spec checklist
- Source: air / water / borehole / waste heat
- Source inlet temperature range
- Sink: temperature, flow, pressure
- Annual heat demand (MWh) + load duration curve
- Concurrent cooling demand (if any)
- Refrigerant option and safety class
- Design COP / SCOP and measurement plan
- Backup / peaking strategy
- Space and machine-room requirements
- Grid connection and demand-charge impact
Investment & operating cost
- Commercial air-source (50–300 kWth)USD 700–1,400 / kWth installed
- Water-source / geothermal (100–1,500 kWth)USD 1,200–2,400 / kWth installed (excl. borehole field)
- Industrial NH₃ / CO₂ HP (0.5–5 MWth)USD 1,600–3,200 / kWth installed
- High-temperature (100–160 °C, 1–15 MWth)USD 2,000–5,500 / kWth installed
Indicative ranges. Actual quotations vary by country, scope, spec, freight and site conditions.
- • Delivery temperature and lift
- • Refrigerant and safety envelope
- • Heat source infrastructure (borehole, waste-heat piping)
- • Redundancy and peaking
- • Grid connection upgrades
- • Thermal storage tanks
- • Peaking electric boiler
- • Waste-heat exchangers
- • Two-stage / cascade compression
- • Structural pad / plantroom
- • Source-side piping and pumps
- • Sink-side piping and thermal store
- • Electrical upgrade to plant
- • Electricity — model at IPLV COP
- • Refrigerant leak-tightness testing
- • Grid demand charges — critical to model
- • Quarterly PM on compressors
- • Annual refrigerant leak check
- • Source-side heat-exchanger cleaning
Before you request quotations
- Define production goals and daily throughput (kg/day)
- Confirm utilities: power (kVA), water, drainage, compressed air
- Define project scope (turnkey vs supply-only vs hybrid)
- Prepare site layout, floor plan and clear height
- Confirm local regulations (F-Gas, ATEX, HACCP, seismic code)
- Determine financing route (own cash, lease, bank loan, ECA)
- Create technical specification with U-values and setpoints
- Prepare RFQ and shortlist qualified international suppliers
Interactive evaluation matrix
Score each shortlisted supplier on the criteria below. All calculations run locally — nothing is sent to our servers.
| Criterion | |||
|---|---|---|---|
Price / Investment Turnkey CAPEX including installation, controls and commissioning. | |||
Warranty (years) Comprehensive, on major components (compressors, PLC, panels). | |||
Lead time (weeks) Ex-works or delivered to site including customs. | |||
Energy efficiency (SEC / COP) Lower SEC or higher COP is better. | |||
Local service & spare parts Response time, service partner in country, stocked spares. | |||
References / installed base Comparable capacity, region and application. | |||
Maintenance program Preventive maintenance plan, remote monitoring. | |||
Operator training On-site training days, documentation, language. | |||
Expandability Add capacity, modules or additional rooms later. | |||
Lifecycle cost (10y) CAPEX + energy + maintenance + refrigerant cost of ownership. | |||
| Total score | 0 / 50 | 0 / 50 | 0 / 50 |
Common questions
Can heat pumps actually replace gas boilers in industry?
Below 100 °C: yes, mature and commercially available (NH₃, HFO). 100–160 °C: yes, with high-temperature designs (NH₃-water hybrids, HFO cascades, CO₂ heat pumps). Above 160 °C: emerging (steam-generating HPs up to 200 °C from Kobelco, Mayekawa, Combitherm).
How do I estimate real COP?
Design-point COP is misleading. Use bin-hour analysis of the actual source and sink temperature profile, weighted by hours of operation. Real SCOP is typically 20–30% lower than nameplate.
What's the fastest-payback heat-pump project?
Simultaneous heating + cooling from one 4-pipe or waste-heat machine. Dairies, hotels, and food factories with parallel chill + hot-water demand typically hit 2–4 year payback.
Continue your planning
Receive structured, comparable quotations from qualified international suppliers — vendor-neutral. Add financing pre-qualification if the project requires equipment leasing, project loan or ECA-backed facility.