Heat Your Building Efficiently
and Cool It in Summer Too
An air-to-air heat pump extracts heat from the outside air and delivers it into your building — even when temperatures drop well below freezing. In summer, simply reverse the cycle for energy-efficient cooling. One system, year-round comfort, up to 4× cheaper to run than direct electric heating.
The Science Behind
Air-to-Air Heat Pumps
Heat pumps don't generate heat — they move it. The outdoor unit absorbs low-grade heat from the outside air, concentrates it using a refrigeration cycle and delivers it as warm air via the indoor unit. The process is efficient at temperatures as low as -20°C in modern inverter models.
- Coefficient of Performance (COP) of 2.5–4.0 — meaning £1 of electricity produces £2.50–£4 of heat
- Effective down to -15°C ambient (most models) or -20°C (cold-climate variants)
- Reverse the cycle in summer for cooling — no second system needed
- Entirely electric — no gas connection required
- Quiet, unobtrusive indoor units — same format as a standard split AC
- WiFi controls and smart scheduling as standard on modern units
- Installation identical to a standard split system — one outdoor, one or more indoor units
Why Choose an
Air-to-Air Heat Pump?
For spaces without gas supply, or where replacing ageing electric heaters with something far more efficient, air-to-air heat pumps offer a compelling combination of low running costs, minimal installation disruption and year-round versatility.
Low Running Costs
A COP of 3.0 means you get 3kW of heat for every 1kW of electricity used — typically 3× cheaper per hour than a direct electric heater of the same output.
Year-Round Use
Heat in winter, cool in summer — from a single system. No separate air conditioning unit needed alongside a heating solution.
No Gas Required
Electric-only connection — ideal for properties not connected to the gas network, listed buildings or new builds with all-electric specifications.
Minimal Disruption
Installation is identical to a standard split system — typically completed in a day with no major building work required.
Inverter Technology
Modern inverter-driven compressors modulate output to match demand precisely — no on/off cycling, more consistent temperatures and lower wear.
Smart Controls
Set heating and cooling schedules, control remotely via app and monitor energy consumption — all from a single interface.
We'll Tell You If It's
Not Right for Your Building
Air-to-air heat pumps are a genuinely excellent solution for many situations — but not every situation. A poorly insulated older property may not retain the heat efficiently enough to justify the investment. We'll assess your building and give you an honest view before you commit.
Honest Assessment
We'll advise on suitability honestly — and tell you if another solution would serve you better
F-Gas Certified
All refrigerant handling by Category 1 F-Gas certified engineers — legally compliant from day one
All Major Brands
Daikin, Mitsubishi, Samsung and Fujitsu cold-climate heat pump variants — we recommend what's right for your climate and budget
Aftercare Included
Annual servicing plans and PPM contracts available from installation day — including F-Gas logbook maintenance
Related Services
Ventilation Systems
MVHR, heat recovery and extract ventilation for homes and businesses.
Refrigeration & Cold Rooms
Cold room design, commercial refrigeration and emergency breakdown response.
HVAC Design & Consultancy
Load calculations, system specification and project management for HVAC projects.
Electrical & Plumbing
Power supplies, pipework and electrical services supporting HVAC installations.
Compliance & Maintenance
PPM contracts, F-Gas compliance, TM44 surveys and reactive maintenance.
The economics of an air-to-air heat pump depend on your existing heating method. The comparison is most favourable against direct electric heating and unfavourable against cheap gas — so it's important to do the maths for your situation.
- COP 3.0 at 7°C ambient: 3kW of heat per 1kW of electricity — at 30p/kWh that's 10p per kWh of useful heat
- Direct electric panel heater: 1kW of electricity = 1kW of heat — at 30p/kWh that's 30p per kWh of heat. The heat pump wins by 3:1
- Gas boiler at 90% efficiency: at 8p/kWh gas, usable heat costs about 9p per kWh — heat pump at COP 3.0 is roughly comparable
- The economics improve significantly when using an EV tariff or Economy 7 overnight rate to pre-heat spaces at lower electricity cost
- As electricity grid decarbonises, the carbon footprint of heat pump heating improves automatically — gas doesn't
Air-to-air heat pumps are not single-season products. The same unit provides efficient heating in winter, comfortable cooling in summer and dehumidification during the muggy shoulder months — all from a single installed system.
- Mode switching is as simple as pressing 'Heat' or 'Cool' on the remote — no seasonal changeover or additional equipment
- In autumn and spring, 'auto' mode handles the switchover automatically based on the room temperature vs your setpoint
- Dehumidification mode can be run independently of heating or cooling — useful during humid British summers without over-cooling the room
- The system can be set to different operating schedules for winter and summer so you don't have to reprogram it each season
- For spaces where cooling was previously unaffordable (portable units are expensive and ineffective), the heat pump provides summer relief at reasonable running cost
An air-to-air heat pump runs entirely on electricity — there's no gas connection, no boiler, no flue and no combustion. This makes it viable in a wide range of situations where gas heating is unavailable, impractical or undesirable.
- Off-grid properties: rural homes without mains gas benefit significantly from heat pump efficiency compared to oil or LPG heating
- Listed buildings and conservation areas: no external flue, no boiler room modifications — less likely to require listed building consent than a gas installation
- New builds with all-electric specifications: straightforward integration alongside ASHP or GSHP for supplementary room-level heating and cooling
- Workshops, garden offices and outbuildings where running a gas supply isn't practical or cost-effective
- Properties with existing direct electric panel heaters where replacing with a heat pump delivers immediate running cost savings
Unlike a boiler replacement, heat pump installation requires no pipework modifications, no radiator changes and no drain-down. It's one of the least disruptive heating solutions available.
- A standard single-zone installation is typically completed in 3–4 hours by a two-person team
- One small hole through the external wall (typically 65–80mm diameter) is required for the refrigerant pipes and cables
- No gas supply works, no boiler decommissioning and no drainage modifications — just a clean electrical connection
- The space occupied by the indoor unit is comparable to a large picture frame — it sits high on the wall and doesn't require floor space
- The outdoor unit needs a suitable location: a flat roof, external wall bracket or ground pad with good airflow clearance — we assess this at the site survey
All modern air-to-air heat pumps use inverter-driven variable-speed compressors. This is what makes them dramatically more efficient than older fixed-speed compressors — and far more comfortable to live with.
- A fixed-speed compressor can only be fully on or fully off — it overshoots the temperature setpoint and cycles repeatedly, wasting energy and causing temperature fluctuations
- An inverter compressor ramps up to full speed rapidly when demand is high, then throttles down to maintain temperature precisely — running continuously at low capacity
- At low capacity, inverter compressors operate at their highest efficiency — a 5kW unit running at 1kW output is more efficient per kW than when running at full power
- Continuous low-speed operation is also quieter and causes less wear on the compressor than repeated start-stop cycling
- Modern inverter drives achieve SEER (seasonal energy efficiency ratio) figures of 7–9 for cooling — significantly above minimum regulatory requirements
Smart controls transform a heat pump from a comfort appliance into an energy management tool. Set and forget routines mean you get the right temperature at the right time without having to think about it.
- Brand apps: Daikin Onecta, Mitsubishi MELCloud, Fujitsu FGLair, Panasonic Comfort Cloud — all free to download, iOS and Android compatible
- Weekly scheduling: set different temperatures for different times of day — pre-heat before waking, reduce when away, resume before returning home
- Energy consumption monitoring: daily and monthly logs show exactly how much electricity the heat pump has used — useful for tracking bills and optimising schedules
- Voice control: compatible with Amazon Alexa, Google Assistant and Apple HomeKit depending on brand and model
- Holiday mode: maintain a frost-protection minimum temperature while you're away, or shut down completely and restart automatically before you return