The Logic Air is Ideal's monobloc air source heat pump, on R32 refrigerant, sold in 4, 5, 8 and 10kW outputs, and City Plumbing lists the 5kW at £3,265.20 including VAT. Ideal publishes a seasonal efficiency of 4.96 to 5.19 at a 35°C flow temperature across the range, and 3.48 to 3.73 at 55°C. The warranty is up to 7 years of parts and labour, available when the unit is registered within 30 days and serviced annually. Ask about those three things, and about where the unit is going to stand, before you sign anything.
The warranty term depends on which Ideal heat pump you get
The Logic Air runs on R32. The HP290 runs on R290 and reaches flow temperatures up to 75°C. They carry different warranty terms, so a quote that says only "Ideal heat pump" has not told you what you are getting.
- Logic Air. Monobloc, R32 refrigerant, 4, 5, 8 and 10kW. Ideal lists it as compatible with radiator and underfloor heating systems, with smart weather compensating controls. Up to 7 years of parts and labour warranty.
- HP290. R290 refrigerant, flow temperatures up to 75°C, which Ideal describes as high temperature output, and listed as smart grid and solar PV compatible. Warranty up to 5 years, not 7.
- Alfea Extensa A.I. and Alfea Excellia A.I. Ideal sells these alongside the other two, and it describes the Excellia as an all-round high temperature solution in the Alfea A.I range.
Those two warranty terms are worth putting side by side: up to 7 years on the Logic Air, up to 5 on the HP290, on the same registration and servicing conditions. If the HP290 is the one being proposed, ask why that unit and what flow temperature the design assumes. Our guide to radiators and heat pumps covers what changing radiators involves.
If the HP290 is what you are being quoted, ask your installer for its datasheet for the output on the quote, and ask what flow temperature the system is designed around.
What an Ideal heat pump costs, and what that price is not
City Plumbing lists the Logic Air 5kW, Ideal part number AH750665, at £3,265.20 including VAT. Its specification for that product lists the items included as "Heat Pump / Wall Bracket", and shows the capacity as "No Cylinder".
Set it against the whole job. The Energy Saving Trust puts the typical cost of installing an air source heat pump at around £12,000, and we break that figure down line by line in our guide to heat pump costs in the UK. The Energy Saving Trust says the installed figure moves with the size of the heat pump, the size of your property, whether the home is a new build or an existing one, and whether your radiators need upgrading. It is also blunt about the cylinder: a standard air source heat pump does not provide hot water on demand like a combi boiler, so you need somewhere to store it.
So ask for the outdoor unit, the cylinder, the controls, the electrical work and the warranty term as separate lines on every quote. That is what lets you see where two prices for the same Ideal unit part company.
VAT is worth a look here too. HMRC's zero rate "applies to the services of installing energy-saving materials in residential accommodation", and an air source heat pump qualifies provided it is permanently fixed rather than portable or moveable. The zero rate runs to 31 March 2027, after which it reverts to 5% rather than to the standard rate. The relief sits on the installation, which is worth knowing before you treat a trade counter price as the cheaper route.
Get the Ideal quote itemised
Tell us about your home once and we will pass your details to MCS-certified installers covering your postcode. Ask each of them to name the outdoor unit, the cylinder, the controls and the warranty term as separate lines. The form takes about a minute.
Two efficiency figures, and your flow temperature picks one
Ideal's published seasonal efficiency for the Logic Air is 4.96 to 5.19 at a 35°C flow temperature, and 3.48 to 3.73 at 55°C. Both sets are Ideal's own figures for the same four units, measured to EN 14825.
| Logic Air | SCOP at 35°C flow | SCOP at 55°C flow | ErP rating at 35°C / 55°C |
|---|---|---|---|
| 4kW | 4.96 | 3.48 | A+++ / A++ |
| 5kW | 5.07 | 3.65 | A+++ / A++ |
| 8kW | 5.16 | 3.70 | A+++ / A++ |
| 10kW | 5.19 | 3.73 | A+++ / A++ |
The 5.19 in Ideal's own marketing is the 10kW unit at a 35°C flow, measured to EN 14825. The same 10kW unit is published at 3.73 when the flow temperature is 55°C. Ask which of those two columns your own system is being designed to sit in.
So the number to ask for is not a SCOP. It is the design flow temperature on your heat loss calculation, in writing, alongside the radiator work the installer is pricing for. We set out how a heat pump compares with the boiler it replaces in heat pumps versus gas boilers.
"Up to 7 years" has two conditions, and one of them is yours
Ideal's Logic Air warranty is up to 7 years of parts and labour, available when the heat pump is registered within 30 days of installation and serviced annually. Both halves matter, and they fail in different ways.
Registration inside 30 days is easy to lose track of once the installation is finished. Ask for written confirmation that it has been done, rather than a promise that it will be.
The annual service is the condition you carry. Ideal sells a plan covering annual servicing, ongoing warranty and support from £22.50 a month on its own published figure, and you can price the same service locally instead. Either way, budget for it, because the warranty term depends on it. Our pages on Vaillant heat pumps and Daikin heat pumps set out what each of those warranties asks of you.
Ideal also states that its products are made in the UK.
Where it goes, and how loud it is when it gets there
Ideal's published sound power level for the Logic Air is 52 dB(A) for the 4kW and 5kW and 55 dB(A) for the 8kW and 10kW, measured to EN 12102-1. England's permitted development right for a heat pump runs through the MCS 020 a) sound calculation, so ask your installer which figure they used and for the calculation in writing.
| Logic Air | Sound power | Outdoor unit size (W x D x H) | Weight |
|---|---|---|---|
| 4kW | 52 dB(A) | 1095 x 518 x 798 mm | 86 kg |
| 5kW | 52 dB(A) | 1095 x 518 x 798 mm | 86 kg |
| 8kW | 55 dB(A) | 1095 x 518 x 1008 mm | 110 kg |
| 10kW | 55 dB(A) | 1095 x 518 x 1008 mm | 110 kg |
Two things follow from that table. The first is siting. All four outputs share the same width and depth, so the footprint against your wall does not change if you go up a size. The 8kW and 10kW stand 1008mm tall instead of 798mm and weigh 110kg instead of 86kg, so check the fixing and the standing space against the output you are actually being quoted.
The second is planning. In England the permitted development right for an air source heat pump runs through a sound calculation in the MCS planning standards, and the standard named there changed. Article 6 of the Town and Country Planning (General Permitted Development) (England) (Amendment) Order 2025 rewrote the definition in Part 14 of the 2015 Order, substituting "MCS 020 a) - Air Source Heat Pump Sound Calculation (For Permitted Development Installations)" for the old reference to MCS 007. Ask your installer for that calculation in writing if the unit is going anywhere near a boundary. We run the calculation in full, with the pass mark and the distances it produces, on the Vaillant heat pumps page, and the Mitsubishi Ecodan page does the same for that range. That Order is an England instrument amending the England Order, so check which rules govern the question where your own home is.
Does an Ideal heat pump get the £7,500 grant?
Yes in England and Wales, through an MCS certified installer, because the Boiler Upgrade Scheme is applied for by the installer rather than by you. Gov.uk sets the route out in three steps: get quotes from MCS certified installers, agree a quote, and your installer applies on your behalf on the Ofgem website. The grant value is then taken off what you pay and shown on your quotation and invoice. Ideal publishes an MCS certificate number against every Logic Air output: KIWA 00027/024 HP for the 4kW, 00027/023 HP for the 5kW, 00027/021 HP for the 8kW and 00027/022 HP for the 10kW.
Gov.uk sets the amounts out plainly: £7,500 towards an air source heat pump, one grant per property, with an extra £1,500 until March 2027 if the property is heated by oil or LPG and has no mains gas connection. The eligibility rules carry several conditions:
- You must own the property, and you must be replacing a fossil fuel heating system such as oil, gas, electric or LPG.
- Your installer must commission and install the heat pump within 120 days of applying, or the grant falls away.
- Most new build properties and social housing cannot get a grant, and nor can a property that has already had government funding for a heat pump.
- Hybrid systems pairing a gas boiler with a heat pump are not eligible.
The scheme is open to people in England and Wales only. In Scotland the route is Home Energy Scotland's grant and loan instead, and in Northern Ireland the Boiler Replacement Scheme has closed, so there is no equivalent heat pump grant there at the moment. The heat pump cost guide sets out all three positions with the numbers underneath them.
How you actually buy one
Ideal's own route for a homeowner is a Find Your Installer page on its website, where you put in your postcode and it finds you an installer. Treat that as a starting list rather than a recommendation, and compare more than one firm from it.
The Energy Saving Trust's advice is to get quotes from MCS accredited installers, and to get at least three of them. Compare those three on cylinder size, radiator work, the design flow temperature and who registers the warranty.
If you are pricing a heat pump and solar in the same year, the same 31 March 2027 VAT deadline covers both: HMRC's list of specified energy-saving materials includes solar panels and air source heat pumps alike. Start with solar panel costs in the UK and solar battery storage.
Frequently asked questions
City Plumbing lists the 5kW unit, part number AH750665, at £3,265.20 including VAT, with the items included shown as Heat Pump / Wall Bracket and the capacity as No Cylinder. The Energy Saving Trust puts the typical cost of a complete air source heat pump installation at around £12,000, before the £7,500 Boiler Upgrade Scheme grant in England and Wales. The Energy Saving Trust adds that the installed cost varies with the size of the heat pump, the size of your property, whether the home is a new build or an existing one, and whether your radiators need upgrading.
Ideal publishes a seasonal coefficient of performance to EN 14825 of 4.96 for the 4kW, 5.07 for the 5kW, 5.16 for the 8kW and 5.19 for the 10kW at a 35°C flow temperature, where all four units are rated A+++. At a 55°C flow the same units return 3.48, 3.65, 3.70 and 3.73 and are rated A++. The 5.19 in the marketing is the 10kW at 35°C, so ask for the design flow temperature on your heat loss calculation rather than a headline SCOP.
Up to 7 years of parts and labour on the Logic Air, and it comes with two conditions: the heat pump must be registered within 30 days of installation, and it must be serviced annually. Ideal sells a plan covering annual servicing, ongoing warranty and support from £22.50 a month. The HP290 carries up to 5 years on the same registration and servicing conditions, so the term depends on which Ideal heat pump is on your quote.
Ideal's published sound power level, measured to EN 12102-1, is 52 dB(A) for the 4kW and 5kW units and 55 dB(A) for the 8kW and 10kW. England's permitted development right for a heat pump runs through the MCS 020 a) sound calculation, so ask your installer which figure they used and for the calculation in writing if the unit is going near a boundary.
Yes, where the work is done by an MCS certified installer. Ideal lists an MCS certificate number for each Logic Air output: KIWA 00027/024 HP, 00027/023 HP, 00027/021 HP and 00027/022 HP for the 4, 5, 8 and 10kW. Gov.uk confirms £7,500 towards an air source heat pump, one grant per property, in England and Wales, plus an extra £1,500 until March 2027 for oil or LPG heated properties with no mains gas connection. You must own the property and be replacing a fossil fuel system, and the installation must be commissioned within 120 days of applying. Scotland uses Home Energy Scotland's grant and loan, and Northern Ireland has no equivalent scheme now that the Boiler Replacement Scheme has closed.
The Logic Air is the R32 monobloc range, in 4, 5, 8 and 10kW, with up to 7 years of parts and labour warranty. The HP290 runs on R290, reaches flow temperatures up to 75°C and is described by Ideal as a high temperature unit that is smart grid and solar PV compatible, with up to 5 years of warranty. Ideal's published efficiency figures for the Logic Air are lower at a 55°C flow than at 35°C, so ask which flow temperature your system is designed around. Ask your installer for the HP290 datasheet for the specific output quoted.