LOWER-COST, YEAR-ROUND SPA HEATING

Keep the water hot without asking a 2kW heater to do all the work

The iNHEAT 7kW SpaLine is built for the temperatures a hot tub actually needs. Full Inverter control matches its output to demand, while EVI technology keeps it operating when the weather falls as low as -25°C.

7kW heating output 10–40°C water range <32dB at 10 metres

iNHEAT 7kW SpaLine EVI heat pump in a front three-quarter view

FULL INVERTER TECHNOLOGY

It works as hard as the water needs, then quietly eases back

A conventional electric heater is a blunt tool: it switches on at full power and switches off again. SpaLine continuously adjusts compressor output to suit the water temperature and conditions outside.

That steadier approach means less wasted energy, a more stable set temperature and less stop-start strain on the compressor. Your actual saving will depend on the spa, cover, insulation, weather and electricity tariff, but the principle is refreshingly simple: buy less heat from the socket.

WHY SPALINE

The useful technology is built in, rather than sold back as an extra

EVI cold-weather performance, reversible heating and cooling, integrated WiFi and quiet-running control are all part of the unit.

iNHEAT SpaLine EVI heat pump operating outdoors in snow

Cold weather does not end spa season

Enhanced Vapour Injection supports operation down to -25°C ambient temperature, so the heat pump is designed for year-round use rather than fair-weather duty.

Smartphone displaying the Smartlife app at 38 degrees Celsius for remote iNHEAT SpaLine control

Your set temperature is in your pocket

Integrated WiFi connects to the Smartlife app, letting you check the water temperature, adjust settings and manage the unit without walking out to the spa.

Compact iNHEAT SpaLine heat pump positioned discreetly beside a garden patio at night

Quiet enough for the garden you bought it for

Published sound pressure is below 32dB(A) at 10 metres. Silent mode reduces output when maintaining temperature matters more than rapid recovery.

iNHEAT SpaLine heat pump supplying a hot tub in winter conditions

Heat in winter, cool when summer gets ideas

Reversible operation gives a 10–40°C water set range. Keep the spa at bathing temperature or cool the water for a fresher summer soak.

iNHEAT SpaLine heat pump with LCD controller and its selectable operating functions

CONTROL WITHOUT FUSS

Choose speed, silence or let the heat pump decide

AutomaticSelects heating or cooling to hold the chosen water temperature.

BoostRaises output when you want to reach the set temperature sooner.

Silent / EcoRuns more gently when efficiency and lower sound matter most.

Heating / CoolingGives you direct control over the job the unit is doing.

BEFORE YOU ORDER

A compact upgrade, provided the flow and pipework are right

The SpaLine connects to a suitable hot tub or swim spa circulation circuit, normally through a bypass arrangement. The bypass kit is sold separately.

Water flow: optimum flow rate of 2m³/h
Connections: 1-inch male with Ø32–38mm pipe compatibility
Position: stable, level base with at least 300mm clear at the sides and rear and 1.5m clear in front
Electrical: 220–240V single-phase, 50Hz supply; have a qualified electrician confirm protection and connection requirements
Insulation: insulate the hot tub, circulation pipework and cover to reduce heat loss
WiFi: a usable 2.4GHz signal at the unit if you want app control

Compatibility depends on your spa’s circulation, control system and pipe layout. If you are unsure, call us on 0330 043 0870 before ordering and we will help you check the setup.

iNHEAT SpaLine heat pump beside a hot tub showing a compact outdoor installation

COMPACT CABINET 632 × 468 × 474mm Manufacturer dimensions

THE NUMBERS

Technical specifications

Heating output	7kW
Ambient operating range	-25°C to 40°C
Water temperature range	10°C to 40°C
Optimum water flow	2m³/h
Hydraulic connections	1-inch male / Ø32–38mm
Functions	Heating / Cooling / Auto / Silent / Boost
Sound pressure at 10m	<32dB(A)
Power supply	220–240V single phase, 50Hz
Maximum input power	2.2kW
Maximum current	7.7A
Dimensions	632 × 468 × 474mm
Unit weight	37kg
Heat exchanger	Titanium heating coil
Compressor	Rotary
Refrigerant	R32
Protection rating	IPX4
WiFi	Integrated; Smartlife app control
Warranty	2 years as standard

FREE MAINLAND UK DELIVERY

Make the expensive part of hot-tub ownership rather less expensive

£1,499 with free mainland UK delivery in 3–5 working days. Use the purchase controls above to order online, or talk the installation through with us first.

Call 0330 043 0870

The iNHEAT 7kW SpaLine is a full inverter EVI air source heat pump for compatible hot tubs and swim spas. It offers reversible heating and cooling, integrated WiFi app control, a 10–40°C water range, ambient operation down to -25°C and a two-year warranty as standard.

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Air Source Heat Pumps for Hot Tubs & Swim Spas

iNHEAT 7kW SpaLine EVI Heat Pump for Hot Tubs and Swim Spas