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  • ACOND Aconomis N

AIR TO WATER · HEATING · COOLING · HOT WATER

ACOND Aconomis N

4.77
~4× efficient · A+++ rated
8kW
heating output
100–140m²
2-3 bed coverage
library quiet
low-noise outdoor unit
A++
ErP rated
propane
natural refrigerant
Free Quote
07526 985258

Why this heat pump

1 kWh of power becomes about 4.77 kWh of heat

477% efficient · A++ rated

Heats a typical 2–3 bed UK home

8 kW · covers 100–140 m²

Library quiet outdoor operation

Heats your home and your taps

Compact indoor controller · works with new or existing cylinder

Tested at our Hackney listed-building install

Natural refrigerant, kinder to the planet

Propane · low GWP, no F-Gas phase-down risk

Compact indoor footprint

Indoor controller · fits an under-stairs cupboard

5 years warranty, 7 if serviced

How it works
Specification
Control/App
Installation
components
Aftercare

Extract

Outdoor unit absorbs heat from the air — even on the coldest UK winter days. natural refrigerant — propane (R290) is compressed to high temperature using a variable-speed twin rotary compressor — the inverter modulates output continuously to match the building's real heat demand. Propane (R290) is a natural refrigerant with a global warming potential of 3, exempt from EU climate regulations — no risk of expensive refrigerant replacement during the unit's service life.

Distribute

Indoor indoor controller takes the heat from the outdoor unit and routes it to your heating circuit and hot water cylinder. Unlike Grandis-range indoor units where the pump, expansion vessel, valves, and controller ship pre-assembled in one box, the Aconomis indoor controller is a smart electrical control unit — the cylinder, circulation pump, and valves are site-built around it. Lower capital cost, simpler indoor footprint, well suited to small-flat retrofits.

Reverse

In summer, the cycle reverses. Chilled water flows through underfloor pipes for silent water-based cooling. No separate condenser, no wall-mounted split units, no fluorinated-gas certification needed. Both Aconomis and Grandis ranges support reversible cooling — same compressor and refrigerant circuit that heats in winter cools in summer.

All-in-one outdoor

All refrigerant stays in the outdoor unit — only water pipes enter your home. No special refrigerant handling needed at install or service. Unlike split-system heat pumps that require a refrigeration-qualified engineer for refrigerant work, Grandis R can be installed by any MCS-certified heat pump installer without fluorinated-gas certification.

Controls

Room thermostat plus the ACOND HeatUp app set your target temperature. Weather compensation adjusts water temperature automatically as outdoor conditions change — keeps the system running at peak SCOP without homeowner intervention. Multi-zone scheduling per room. Remote diagnostics by ACOND if anything ever goes wrong.

Hot Water

Heat-pump-priority mode heats the cylinder ahead of space heating when there's demand. For 2–3 bed homes, a 180–210L indirect cylinder is typically right-sized — fits an airing cupboard, under-stairs space, or utility room. Weekly anti-legionella cycle runs automatically. For tight installs, swap the standard cylinder for a Sunamp Thermino heat battery (4× smaller, see Works With section below).

SCOP 4.77 Efficiency rating — A+++ heating. 477% efficient: every 1 kWh of electricity delivers 4.77 kWh of heat over a typical UK heating season.
Heat per kWh 4.95 Heat output per kWh of electricity, measured at typical UK winter conditions (7°C outside, 35°C water).
Output to 8 kW Sized for typical UK 2–3 bed homes: 100–140 m² floor area. Variable-speed inverter modulates output continuously to match real demand — no oversized cycling, no on/off short-cycling.
Operating −22 → +35°C Full capacity delivered across every UK winter day. Tested at the cold winter temperatures the UK occasionally sees.
Indoor Unit Indoor controller Indoor controller — smart electrical control unit. Cylinder, circulation pump, expansion vessel, and 3-way valve are site-built around it. Lower capital cost than a Grandis indoor unit, smaller indoor footprint.
Refrigerant propane Natural hydrocarbon. GWP 3. Exempt from EU climate regulations — no risk of expensive refrigerant replacement during the unit's service life.
Electrical 230V · 1ph 230V single-phase, 50 Hz. Standard mains supply, no three-phase distribution required. RCD per UK Building Regulations.

Control

Grandis R ships with the ACOND HeatUp app for iOS and Android, plus room thermostat in the reference room. Weather compensation and multi-zone scheduling as standard. Remote diagnostics from ACOND through cloud connection — if anything ever goes wrong, the manufacturer can see it before you call.

HeatUp app · iOS / Android

Luxury comfort, always within reach. The free ACOND HeatUp mobile app gives full system control — set heating, cooling, and hot water modes, adjust setpoints, view live status, schedules, and energy consumption. A single account supports multiple buildings — useful for landlords, property managers, and CleverBloom service plan visibility.

Weekly scheduling per zone

Independent temperature setpoints and time programmes per heating zone. Bedrooms cooler than living areas at night. Weekend schedules different from weekdays. Holiday mode drops everything to frost protection. All configured once on the app, then runs automatically.

Real-time energy monitor

Live kWh consumption visible in the app — see exactly what your heating is costing per day, per week, per month. Compare seasons. Identify the rooms or schedules that drive consumption. Particularly useful when paired with solar PV — see when the heat pump runs on free roof energy vs grid.

Weather compensation

Auto-adjusts water temperature before you feel cold. Reads outdoor temperature, predicts heat demand, and modulates output continuously. Keeps the system running at peak SCOP without manual setpoint chasing — the homeowner just sets a comfortable room temperature and the controller does the rest.

Multi-zone temperature

Independent room temperature control across the property. Each zone valve and room thermostat reports back to the controller. Bedrooms can run at 18°C while the living area runs at 21°C. Empty zones default to frost protection. Optimises both comfort and running cost.

Filter and service alerts

CleverBloom service plan visibility through the same control architecture. Push notifications when annual service is due, when filters need a check, or when the heat exchanger is approaching a recommended deep clean. No surprise breakdowns from missed maintenance.

Remote diagnostics by ACOND

ACOND monitors connected units remotely from their service centre in the Czech Republic. Most warranty cases can be diagnosed without a site visit — sensor logs, water temperatures, compressor performance all visible to the manufacturer. Faster fixes, lower service cost, longer system life.

Cloud connected · OTA updates

WiFi connection to ACOND cloud. Firmware updates pushed over-the-air — controller logic, app features, and bug fixes installed automatically. The unit you buy this year keeps getting better through its 20-year design life. No need for installer site visits to apply software updates.

Smart home integration

Optional building-control protocol integration with home automation systems — Loxone, KNX (via gateway), Crestron, or any compatible building-management systems. Configurable as part of the project for clients running whole-house automation. Most domestic clients run the HeatUp app standalone; smart home integration is an upgrade path when needed.

Installation

Heat-pump-replacement project takes 2–3 days end-to-end for a typical 2–3 bed home. Allow up to 5–7 days if radiators need resizing or new pipework runs are extensive. No council permission needed under permitted development since May 2025 (listed buildings excepted). CleverBloom is MCS-certified and applies for the £7,500 government grant on your behalf where the property qualifies.

01 Consultation Free · phone or video Discuss the property, the current heating setup, and what you want to achieve. Confirm BUS grant eligibility (must be replacing a fossil-fuel boiler, EPC valid, no outstanding loft / cavity insulation recommendations). Indicative sizing and approximate quote sent within 48 hours.
02 Survey & Design Half day on site Heat loss calculation per room (standard MCS heat-loss methodology). Radiator and underfloor heating assessment — which radiator or floor loops work as-is, which need resizing. Cylinder sizing based on occupancy and demand. Electrical capacity check. Outdoor unit position confirmed. Final spec and fixed-price quote issued.
03 Install 2–3 days on site Outdoor unit positioned on a concrete pad, garden plinth, or wall brackets. Indoor controller mounted indoors (utility room, under stairs, or airing cupboard). Pipework run from outdoor to indoor unit. Cylinder installed (or Sunamp Thermino if specified). System filled with treated water. Existing boiler decommissioned and removed where applicable.
04 Commission Half day Initial power-up and air purge. Flow rates set per radiator or floor loop. Weather compensation curves configured. HeatUp app paired to homeowner's network. government-approved commissioning certificate (MCS) issued. BUS grant claim filed by CleverBloom on the homeowner's behalf. £7,500 deducted from final invoice on grant approval.

Components

Six components make up an Aconomis N system. Each one specified to suit your property's heat-loss profile and hot-water demand. Same component breakdown shown in the pricing section below — what's in the system, what's site-built, what each part does.

1 · ACOND Aconomis N outdoor unit

The heat pump itself. Variable-speed twin rotary compressor with natural refrigerant — propane (R290), 8 kW heating output. Stainless steel housing. 4× efficient, COP 4.95 at A7/W35. Sits on a concrete pad, garden plinth, or wall brackets — outdoor unit only, no refrigerant lines run indoor (all-in-one).

2 · Indoor controller

Smart electrical control unit — the indoor brain of the system. Houses the controller, weather compensation logic, RCD protection, and HeatUp app connection. Pump, valves, expansion vessel, and cylinder are site-built around it. Smaller indoor footprint than a Grandis indoor unit — fits an under-stairs cupboard or utility room.

3 · Hot water cylinder

Indirect cylinder, 180–210L typical for a 2–3 bed home. Heat-pump-priority charging brings the cylinder up to temperature from the heat pump alone for normal demand. Weekly anti-legionella cycle automatic. Tight space? Replace with a Sunamp Thermino phase-change battery (4× smaller — see Works With section below).

4 · Buffer tank

Small thermal store between heat pump and radiator or floor loops. Stops the heat pump short-cycling when demand fluctuates, gives the system stable water temperatures, and gives the variable-speed inverter time to find its optimal modulation point. Typically 50–80L for a 2–3 bed system.

5 · Pipework & materials

Insulated water pipes between outdoor unit and indoor controller. Stainless steel or copper to MCS standards, insulation rated for outdoor exposure. Cable run for outdoor unit electrical supply, RCD wiring, and outdoor temperature sensor. All sized at survey to suit the routing — short runs reduce pipework cost, long runs need more insulation.

6 · Water treatment

Magnetic filter and corrosion inhibitor on the heating circuit — protects the heat exchanger from sludge and prevents corrosion. Manufacturer warranty requirement. In hard-water regions like London, an Ecosoft softener on the cylinder feed prevents limescale build-up that would otherwise degrade efficiency over time.

Aftercare

What ACOND covers as standard, and the two system-protection components that keep the warranty valid and the heat pump performing year after year. CleverBloom service plans and extended warranties available — quoted alongside the install.

5 year manufacturer warranty

ACOND warrants the Grandis R for 5 years from commissioning as standard. Optional extension to 7 years available when the system is on a CleverBloom annual service plan — the inspection record satisfies ACOND's extended-warranty conditions. Both parts and labour covered.

20 year design life

ACOND publishes a 20-year design life on the Grandis range. Heavy-duty stainless steel housing resists coastal salt and urban pollution. Variable-speed twin rotary compressor with inverter control modulates output continuously — fewer hard starts, less mechanical wear, longer service life than fixed-speed alternatives. Serviceable components throughout, no proprietary failure points.

propane future-proof

Propane (R290) is a natural refrigerant safe from upcoming EU regulations that restrict synthetic refrigerants. No risk of expensive refrigerant replacement during the unit's service life — unlike R32 or R410A systems where supply will tighten and prices will rise as phase-down progresses. Propane (R290) has roughly 1,000× lower climate impact than R32.

MCS certified

Every Grandis R installed by a government-approved (MCS-certified) installer qualifies for the £7,500 government grant and complies with government noise and performance standards (MCS 020). CleverBloom is MCS-certified and handles the grant application end-to-end. Grant deducted upfront from your invoice on approval.

Water treatment

A magnetic filter and corrosion inhibitor protect the heat pump's heat exchanger from sludge and scale. Treated system water is a manufacturer warranty requirement — untreated systems are typically excluded from cover. The combination keeps efficiency steady, prevents pump and valve failures, and means fewer service callouts over the life of the unit.

Water softener

An Ecosoft softener removes calcium and magnesium from the feed water before it reaches the heat pump. In hard-water regions like London, this stops limescale forming on the heat exchanger surfaces — the single biggest cause of efficiency drop-off and component failure in air-to-water heat pumps. With a softener fitted, the system runs at design performance for decades instead of degrading year by year.

Pricing

No items found.
Supply only
fully installed

£9,091

from £4,700

£7,500 government grant (where eligible)

What's included (6 components)

ACOND Aconomis N 8 kW £3,841
Indoor controller (indoor unit) £700
Hot water cylinder £900
Buffer tank £500
Pipework & materials £800
Water treatment £350
+ MCS commissioning labour £2,000

£3,841

Catalog headline · components delivered · no install labour included


What's included

ACOND Aconomis N 8 kW outdoor unit £3,841
Indoor controller, cylinder, buffer, pipework, treatment quoted at survey
Equipment
£11,200
Installation & commissioning
£4,300
Fully installed
£15,500
After £7,500 BUS grant 0% VAT until March 2027
£8,000
get a quote
07526 985258
No items found.

Technical specifications

SCOP 4.77 Efficiency rating — A+++ heating. 477% efficient: every 1 kWh of electricity delivers 4.77 kWh of heat over a typical UK heating season.
Heat per kWh 4.95 Heat output per kWh of electricity, measured at typical UK winter conditions (7°C outside, 35°C water).
Output to 8 kW Sized for typical UK 2–3 bed homes: 100–140 m² floor area. Variable-speed inverter modulates output continuously to match real demand — no oversized cycling, no on/off short-cycling.
Operating −22 → +35°C Full capacity delivered across every UK winter day. Tested at the cold winter temperatures the UK occasionally sees.
Indoor Unit Indoor controller Indoor controller — smart electrical control unit. Cylinder, circulation pump, expansion vessel, and 3-way valve are site-built around it. Lower capital cost than a Grandis indoor unit, smaller indoor footprint.
Refrigerant propane Natural hydrocarbon. GWP 3. Exempt from EU climate regulations — no risk of expensive refrigerant replacement during the unit's service life.
Electrical 230V · 1ph 230V single-phase, 50 Hz. Standard mains supply, no three-phase distribution required. RCD per UK Building Regulations.

Works with

No items found.

Installed by CleverBloom

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About products

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ACOND Aconomis N — air-to-water heat pump · UK installation

The ACOND Aconomis N is the volume-fit Aconomis variant — the most popular model in the ACOND range for typical UK 2–3 bedroom homes between 100 and 140 m². At up to 8 kW heating output, modulating with a variable-speed inverter, it covers the full annual heat demand of a typical British semi or terrace. Same propane all-in-one architecture as the rest of the range — no fluorinated-gas certification needed at install or service, no risk of expensive refrigerant phase-down later. Reversible cooling is included across the Aconomis range — same compressor and refrigerant circuit cools in summer.

Aconomis N achieves 4× efficient (477% efficient, A++ rated) and COP 4.95 at A7/W35. Indoor distribution uses an indoor controller rather than a pre-assembled indoor unit: a smart electrical control unit that the cylinder, circulation pump, expansion vessel, and 3-way valve are site-built around. Lower capital cost than a Grandis-range install, smaller indoor footprint, and well suited to typical UK 2–3 bed retrofits where the boiler cupboard or under-stairs space already houses the heating plant. The catalog headline price is £3,841 supply. Used at our Hackney E8 Victorian terrace listed-building install and North Wharf Road W2 aesthetic clinic.

Heat Pumps

A heat pump replaces your gas boiler. It heats your home in winter, cools it in summer, and produces hot water year-round from a single outdoor unit. One system, three jobs. For 1–2 bed flats and small homes, the heat pump replaces electric resistance heating, storage heaters, or a gas combi — the right choice depends on what's there today and how much heat the property loses.

We integrate heat pumps with the radiator or floor loops that suit your property. Low-temperature radiators work well in retrofits where you want to keep things simple. Underfloor heating pairs naturally with a heat pump because both run at low water temperatures, giving you quiet, even warmth across every room — and the same underfloor pipes can deliver chilled water for silent cooling in summer. Choosing the right mix of radiator or floor loops is where most heat pump installations succeed or fail. We specify each property individually based on heat loss, layout, floor build-up, and how you actually use the rooms.

ACOND heat pumps

ACOND heat pumps are built in the Czech Republic, in a country where winters regularly drop below minus twenty. That matters. A heat pump designed for mild weather will stall when the temperature actually drops. ACOND units are engineered from the outset for real continental winters, which means they still deliver full heating capacity on the days you need it most.

The build quality reflects decades of Central European engineering culture. Heavy-duty stainless steel construction, serviceable components, and propane natural refrigerant circuits designed for long life rather than lowest cost. Every ACOND unit ships pre-tested at the factory, performance-certified to the EN 14825 standard verified by , and supplied with detailed sizing tools so installers can match the unit to the property. The result is a heat pump that performs the way the data sheet says it will, year after year.

Aconomis N in CleverBloom's heating scope

CleverBloom installs ACOND Aconomis N for typical UK 2–3 bed retrofits, listed-terrace scope, small commercial unit fitouts, HMO and rental upgrades, and architect-led refurbs across London and the UK. CleverBloom handles design, MCS-compliant sizing per room, mechanical install, electrical first-fix, control commissioning, BUS grant administration where applicable, and ongoing service. Every Aconomis N install is commissioned to MCS 020 noise standards and Building Regulations Part L as part of the project handover, with full O&M documentation and HeatUp app pairing for the homeowner.

Aconomis N sits alongside other CleverBloom heating products: Sunamp Thermino phase-change heat batteries (4× smaller than a traditional cylinder, ideal for tight retrofits), Etherma infrared panels for shoulder-season redundancy, Ecosoft water treatment (essential in hard-water UK regions to protect heat exchanger longevity), magnetic filtration and corrosion inhibitor (warranty-required water treatment), Showersave / Recoup waste-water heat recovery, and PV + battery integration via Fox ESS or Octa for solar self-consumption. Combined as a coordinated heating scope, Aconomis N replaces a gas boiler with a system that does heating, cooling, and hot water from a single outdoor unit.

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