Leicester & Leicestershire

Procons of heating and cooling

A plain-English comparison of heat pumps and air conditioning that heats and cools — so a Leicestershire homeowner can choose a path, not a catalogue. Artifis installs both. Many homes want both.

Heat pumps Hybrid Underfloor vs radiators Air con heat + cool Which to choose Grants

Two complementary systems

Heat the house. Cool the rooms. Or both.

A heat pump (air source or ground source) is usually a whole-house heating system. It replaces — or works towards replacing — a gas, oil or LPG boiler and feeds your radiators or underfloor heating. Eligible installs can attract the Boiler Upgrade Scheme grant (currently up to £7,500 for qualifying air-to-water or ground source systems in England and Wales).

Air conditioning is a heat pump in the wall unit. In summer it cools. In winter it heats that room. It is fast to live with, room-by-room, and is what most people mean when they want comfort on hot Leicestershire days — bedrooms, lofts, home offices, living rooms.

They are not rivals. Plenty of homes keep (or move to) a whole-house heat pump for daily heating, and add air conditioning for summer cooling plus extra winter heat in the rooms that overheat or never quite warm up. Artifis designs and installs both.

Heat pumps

Air source and ground source — one family

Both take heat from outside and lift it into the house. Both can be MCS-certified. Both can feed radiators or underfloor. The difference is where the heat is collected and how much garden work you accept.

Air source (ASHP) Ground source (GSHP)
How it works Outdoor unit takes heat from the air. Sits outside, like a larger AC condenser. Heat from the ground via buried loops or boreholes. Indoor plant is quieter at the boundary.
Install disruption Usually days to a couple of weeks for a typical house. Outdoor pad, pipework, cylinder and controls. Higher: trenches or drilling. Garden or drive is out of use during the ground works.
Running in cold weather Modern units heat well in a UK winter. Output and efficiency drop as it gets very cold; design must allow for that. Ground temperature is steadier, so efficiency is often more even through winter.
Running cost Typically cheaper to run than oil, LPG or older electric heat when the system is sized properly. Electricity in, several units of heat out. Often a little more efficient still — if the ground array is designed correctly. Higher install effort to get there.
Best for Most Leicestershire houses replacing a boiler, including many with existing radiators (often upsized). Larger plots, new-builds, or owners who want long-term efficiency and can accept ground works.
Grant (BUS) Qualifying MCS air-to-water and ground source installs can attract the Boiler Upgrade Scheme. See our grant page — Artifis does not decide eligibility.

Pros

  • Whole-house heating from one designed system.
  • Lower running cost than oil / LPG when sized right.
  • BUS grant may apply (not a hybrid — see below).
  • Air source: no boreholes, smaller outdoor footprint than ground works.
  • Ground source: steadier winter performance.

Cons

  • Higher install disruption than a like-for-like boiler swap.
  • Radiators may need to be larger (lower flow temperature).
  • Hot-water cylinder is usually required.
  • Air source: outdoor unit needs space, airflow and a considerate neighbour layout.
  • Ground source: garden or borehole cost and time.

Heat pumps are sized in kW to the house after a heat-loss survey — not guessed from a brochure. Free online survey or a physical survey if you want us on site. Details: heat pumps in Leicester.

Hybrid

Heat pump + boiler

A hybrid keeps your existing boiler and adds a heat pump. The heat pump does the bulk of the year; the boiler covers very cold snaps or a house that is not yet ready for a full switch. It can be a sensible stepping stone — less “rip everything out” in one go.

Grant honesty: hybrid systems (for example a gas boiler plus an air source heat pump) do not qualify for the Boiler Upgrade Scheme. If the grant is part of the decision, a full qualifying heat pump is the path to check first on our BUS page.

Pros

  • Familiar backup heat on the coldest days.
  • Can keep more of the existing pipework and emitters while you learn the system.
  • Useful where insulation or radiators are not yet upgraded.
  • Less “all or nothing” for some older properties.

Cons

  • No BUS grant on a hybrid (current scheme rules).
  • Two systems to service: heat pump and boiler.
  • Still burns gas, oil or LPG part of the year.
  • Controls must be set up properly or you pay to run both badly.

How the heat is delivered

Underfloor vs radiators

Heat pumps like a lower water temperature than an old boiler. That is efficient — but the heat has to get into the rooms somehow. Underfloor heating has a large surface, so it suits heat pumps well. Existing radiators often work if they are large enough; some rooms need bigger emitters.

Underfloor Radiators
Comfort Even, gentle heat from the floor. Good with a heat pump’s steady running. Familiar. Fine when emitters are sized for the lower flow temperature.
Disruption High if you are opening floors in a finished house. Easier in a renovation or extension. Lower: swap or upsize radiators, keep most floor finishes.
With a heat pump Usually an excellent match. Lower flow temperatures, efficient running. Often viable. Survey may recommend larger radiators in some rooms — not always every room.
Best for New floors, extensions, whole-house refurbishments. Lived-in houses where you want heating replaced without lifting every floor.

We do not guess radiator sizes from a floor-area rule of thumb on this page. A heat-loss survey tells you which rooms, if any, need larger emitters.

Air conditioning

Cooling and heating from the wall unit

A split air-conditioning system is a heat pump. Cooling mode takes heat out of the room. Heating mode reverses the flow and puts heat in. That is why Artifis talks about air con as year-round comfort — not a summer-only gadget.

It does not automatically replace a whole-house boiler. It heats the rooms you fit. That is the point for many homes: a loft conversion, a west-facing bedroom, a home office that cooks in July and feels mean in January.

Single split Multi-split
What you get One outdoor unit, one indoor unit. One room (or open-plan zone) done properly. One outdoor unit serving two or more indoor units. Several rooms, one outdoor footprint.
Control Simple. That room on its own schedule. Each indoor unit can usually be set separately. Outdoor capacity is shared.
Best for One problem room, a first step, or a house that later adds more singles. Two or three key rooms where you only want one outdoor unit on the elevation.

Pros vs a whole-house heat pump

  • Summer cooling — a hydronic heat pump on radiators does not give you this.
  • Room-by-room comfort, fast to feel.
  • Usually less disruption than a boiler replacement and cylinder change.
  • No need to touch every radiator on day one.
  • Heats the rooms you care about in winter as well as cooling them in summer.

Cons vs a whole-house heat pump

  • Not a full central-heating replacement unless you cover every space — most homes do not.
  • Does not heat hot water (showers and taps still need a cylinder, combi or similar).
  • BUS: air-to-air is a different, smaller grant where it qualifies at all — not the £7,500 air-to-water figure. Check the grant page.
  • Indoor units are visible. Outdoor unit still needs a tidy, legal location.

Install, service and repair across Leicester and Leicestershire: air conditioning. REFCOM F-Gas certified.

Leicestershire homeowner

Which path fits — and why both is often the answer

Use this as a chooser, not a datasheet. A survey still decides kW size, electrics and whether radiators need work.

If you mainly want… Lean towards Also consider
To replace the boiler and cut heating bills Air source or ground source heat pump (MCS, BUS if you qualify) Air con in the rooms that overheat in summer
A stepping stone, keep the boiler for now Hybrid (understand: no BUS on the hybrid) Fabric upgrades so a full heat pump becomes realistic later
Cool bedrooms / loft / office, and some winter heat there Air conditioning (single or multi-split) A heat-pump path for the rest of the house when you are ready
New floors or a renovation Heat pump + underfloor where the floors are open Air con for storeys or rooms that still need cooling
Lived-in house, keep the décor Heat pump on upsized radiators, or air con only in the worst rooms Hybrid if a full switch is a stretch this year (no BUS)
Grant as part of the budget Qualifying whole-house heat pump — confirm on the BUS page Do not plan a hybrid or a “boiler stays forever” design around the £7,500 figure

The honest upsell

Hot summers and a gas boiler that is due replacement are two different discomforts. Air conditioning solves the first. A heat pump solves the second. Artifis does both, so you are not pushed into the only product on the van. Many customers start with the rooms that ruin sleep in July, then plan the heat-pump replacement on a later survey. Others do the heat pump first and add cooling to the rooms that still bake. Either order is valid.

Money from government — current schemes only

Grants: BUS yes, RHI no

  • Boiler Upgrade Scheme (England & Wales) — currently up to £7,500 towards a qualifying air source (air-to-water) or ground source heat pump when replacing fossil-fuel heating. Oil and LPG homes may have a higher cap in some periods — always confirm on our Artifis BUS page (official GOV.UK guidance stays on this site). Artifis handles paperwork where you qualify. We do not decide eligibility.
  • Air-to-air (typical room air conditioning) is not the £7,500 figure. A smaller grant may apply in limited cases — same BUS page, not a promise on this comparison.
  • Hybrid (heat pump + boiler) does not qualify under current BUS rules.
  • Domestic Renewable Heat Incentive (RHI) closed to new applicants on 31 March 2022. Do not budget as if RHI is still open.

No prices on this page. A survey and a written estimate come next — free online survey, or a physical survey if you want us at the property.

Physical survey visit charges: domestic up to 5 bedrooms £35; 6–10 bedrooms £70; over 10 bedrooms and larger commercial premises are priced by Artifis. Standard commercial £165 weekdays or £175 weekends. That payment is a service charge, not a deposit. The survey cost is a service charge and is non-refundable. At the discretion of Artifis Ltd, the amount paid may be credited to the final invoice for a full installation of an air conditioning or heat pump unit with Artifis, provided that installation takes place within 90 days of payment of the survey charge. Artifis reserves the right to decline any refund.