A commercial heat pump installation is an air source system designed for a non-domestic or multi-unit building, such as an office, shop, surgery, small workshop or block of flats, where the heating load and hours of use are larger or more varied than in a single home. Rather than one unit, these systems often use several outdoor units working together, called a cascade, so output can step up and down with demand and one unit can be serviced while the others keep running.
On busy Hampshire high streets, deliveries and crane lifts are scheduled around access restrictions and opening hours. Landlords and managing agents in Hampshire can phase the work to keep tenants and staff comfortable during the switchover. For blocks of flats in Hampshire, we assess whether individual units or a communal system suits the building and how it is managed.
Who it suits
- Blocks of flats and houses in multiple occupation needing shared or per-flat systems
- Buildings with roof or yard space for outdoor plant
- Premises that also want cooling in some areas
- Offices, shops and small commercial premises replacing gas or oil boilers
Grants and rules for heat pumps in England
In England the Boiler Upgrade Scheme gives £7,500 towards an air source heat pump (£9,000 if it replaces oil or LPG, from 21 July 2026 to 31 March 2027), and since 28 April 2026 a valid EPC is no longer needed. The grant is applied for by the MCS-certified installer and shown as a deduction on your quote.
Installing heat pumps is zero-rated for VAT across the UK until 31 March 2027. Since 29 May 2025, permitted development in England allows up to two air source heat pumps on a house, each up to 1.5 m³, with no blanket 1 m boundary rule — the installation must still meet the MCS planning standards, including the noise check. Listed buildings, flats and some conservation-area positions need extra consent, which we check at survey.
Prices
Commercial systems are priced after a site survey and load calculation.
Towns we cover in Hampshire
We cover 23 towns in Hampshire for commercial heat pump installation. Each links to local guide prices and the grant position for England.
| Town | Postcode district | Nearest town | Midwinter daylight |
|---|---|---|---|
| Southampton | SO14 | Totton | 7 h 56 min |
| Portsmouth | PO1 | Gosport | 7 h 57 min |
| Basingstoke | RG21 | Alton | 7 h 52 min |
| Gosport | PO12 | Portsmouth | 7 h 57 min |
| Waterlooville | PO7 | Havant | 7 h 56 min |
| Farnborough | GU14 | Aldershot | 7 h 52 min |
| Eastleigh | SO50 | Southampton | 7 h 55 min |
| Winchester | SO23 | Eastleigh | 7 h 54 min |
| Havant | PO9 | Waterlooville | 7 h 56 min |
| Andover | SP10 | Winchester | 7 h 52 min |
| Fareham | PO16 | Gosport | 7 h 56 min |
| Aldershot | GU11 | Farnborough | 7 h 52 min |
| Fleet | GU51 | Farnborough | 7 h 52 min |
| Totton | SO40 | Southampton | 7 h 55 min |
| New Milton | BH25 | Lymington | 7 h 57 min |
| Bordon | GU35 | Alton | 7 h 53 min |
| Yateley | GU46 | Fleet | 7 h 51 min |
| Alton | GU34 | Bordon | 7 h 53 min |
| Romsey | SO51 | Totton | 7 h 55 min |
| Fordingbridge | SP6 | Ringwood | 7 h 55 min |
| Lymington | SO41 | New Milton | 7 h 57 min |
| Petersfield | GU31 | Bordon | 7 h 55 min |
| Ringwood | BH24 | Fordingbridge | 7 h 56 min |
Commercial heat pump installation questions
What is a cascaded heat pump system?
A cascaded system links two or more outdoor heat pump units to one controller, which runs as many units as demand needs. On mild days one unit might run; on cold days all of them. This keeps each unit working efficiently, spreads wear across the units and means heating can usually continue at reduced output if one unit needs repair or servicing.
Are there grants for commercial heat pumps?
It depends on the building, its size and use, who owns it and which nation it is in, and the rules differ from those for homes. We check at survey whether any scheme applies to your building in England, Wales, Scotland or Northern Ireland, and we do not include a grant in the quote unless eligibility has been confirmed.
Can heat pumps go on a flat roof?
Yes, flat roofs are a common position for commercial plant. The roof needs a structural check for the weight of the units and their frames, and the installation usually needs a lifting plan, anti-vibration mounts, drainage for defrost water and safe access for maintenance. Pipe and cable routes from the roof into the building are planned at survey.
Can you install without closing the business?
Usually, yes. Outdoor plant, pipework and controls can often be installed while the existing heating still runs, with the switchover planned for a short window, such as a weekend or a quieter time of year. Work inside occupied areas can be phased. The programme in your quote sets out what happens when, so you can plan staff and customers around it.