
Rinnai PX Series 2.5kW Inverter Split System Air Conditioner Heat Pump
Available to order — dispatched on the lead time shown below.
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Retail prices include VAT.
The Rinnai PX Series 2.5kW Inverter Split System provides state-of-the-art climate control, offering whisper-quiet cooling and efficient reverse-cycle heating tailored for UK bedrooms, small living spaces, and home offices up to 20m². Designed with Japanese engineering pedigree, this high-performance system operates on eco-conscious R32 refrigerant and achieves impressive A+++ seasonal energy efficiency ratings. Integrated smart Wi-Fi allows complete control via your smartphone or voice assistant using Amazon Alexa and Google Home. Featuring 3D Airflow louvres, multi-stage filtration to capture airborne allergens, and durable GoldGuard anti-corrosion condenser treatment, the PX Series ensures year-round comfort, minimal electricity consumption, and whisper-quiet night-time acoustics. Installation must be completed by an F-Gas certified technician to activate full manufacturer warranty protection.
Need it installed?
We'll match you with a local HVAC engineer.
Smart-home ready
Connects natively with the systems below — control by app or voice.
- Free UK mainland delivery on in-stock units
- Manufacturer warranty included
- 14-day returns
Technical documents & videos
More from Rinnai →Official Rinnai manual
The manufacturer's PDF for this model is being sourced and will be downloadable here.
Full Specifications
Physical dimensions
Exact dimensions for this model are being confirmed with Rinnai — ask us and we will send the cut sheet with mounting and clearance figures.
Description
The Rinnai PX Series 2.5kW Inverter Split System provides state-of-the-art climate control, offering whisper-quiet cooling and efficient reverse-cycle heating tailored for UK bedrooms, small living spaces, and home offices up to 20m². Designed with Japanese engineering pedigree, this high-performance system operates on eco-conscious R32 refrigerant and achieves impressive A+++ seasonal energy efficiency ratings. Integrated smart Wi-Fi allows complete control via your smartphone or voice assistant using Amazon Alexa and Google Home. Featuring 3D Airflow louvres, multi-stage filtration to capture airborne allergens, and durable GoldGuard anti-corrosion condenser treatment, the PX Series ensures year-round comfort, minimal electricity consumption, and whisper-quiet night-time acoustics. Installation must be completed by an F-Gas certified technician to activate full manufacturer warranty protection.
Compare similar units
Side-by-side specs for other split system ac in a similar BTU range.
Common questions about the Rinnai PX Series 2.5kW Inverter Split System Air Conditioner Heat Pump
How many BTU is the Rinnai PX Series 2.5kW Inverter Split System Air Conditioner Heat Pump?
The Rinnai PX Series 2.5kW Inverter Split System Air Conditioner Heat Pump has a cooling capacity of 9,000 BTU, suitable for Up to 20m².
What room size is the Rinnai PX Series 2.5kW Inverter Split System Air Conditioner Heat Pump suitable for?
The Rinnai PX Series 2.5kW Inverter Split System Air Conditioner Heat Pump is recommended for rooms Up to 20m².
Can I install the Rinnai PX Series 2.5kW Inverter Split System Air Conditioner Heat Pump myself?
No — this unit requires professional installation by a qualified F-gas engineer. Use our Find an Installer service to get matched with a local HVAC professional.
Is the Rinnai PX Series 2.5kW Inverter Split System Air Conditioner Heat Pump smart-home compatible?
Yes — the Rinnai PX Series 2.5kW Inverter Split System Air Conditioner Heat Pump supports Amazon Alexa, Google Home for app and voice control.
How long does delivery of the Rinnai PX Series 2.5kW Inverter Split System Air Conditioner Heat Pump take?
This unit is dispatched in 2-3 working days. Delivery is then 1–2 working days to most UK mainland addresses, and 3–6 working days into the EU.
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Mitsubishi ElectricAnnual energy savings estimate
How much this A+++-rated unit could save versus a standard C-rated model, based on your usage.
This unit
68 kWh/yr
EER 14
Standard model
119 kWh/yr
EER 8
Est. saving
£13.74
51 kWh/yr less
Estimate based on the unit's energy-rating efficiency factor and cooling capacity (9,000 BTU). Actual savings vary with room size, climate and usage patterns.
Winter heating cost: this AC vs electric heaters
This unit reverses to heat your room in winter. Based on its 3 kW heat output used 5 hrs/day over a 150-day UK heating season at £0.27/kWh.
Electric heater / season
£605
This AC / season
£202
You save / season
£404
~67% less electricity
| Heating method | Electricity / season | Cost / season | Efficiency | Summer cooling |
|---|---|---|---|---|
| This heat-pump AC | 747 kWh | £202 | Up to 300% | |
| Plug-in electric heater | 2242 kWh | £605 | 100% | |
| Electric storage heater | 2242 kWh | £605 | 100% |
Heat output estimated from this unit's 10,200 BTU/hr rating. A heat pump moves heat (COP ≈ 3), so it uses about a third of the electricity of a direct-electric heater for the same warmth. Actual savings vary with room size, insulation, tariff and usage. See the full comparison →
Share your savings
This heat-pump AC costs only £202/season to heat a room vs £605 for an electric heater - that's £404 saved. https://stockool.store/products/rinnai-px-series-2-5kw-inverter-split-system-heat-pump
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