Renewable heating
Heat pump installation
A measured route from suitability assessment to commissioned renewable heating.
Explore service →Across Surrey
Air source heat pumps
Property-led design, installation and support for air-to-water heat pumps across Surrey.
10+ yearsdomestic heating experience stated by NW Heating
Air + groundheat-pump installation, repair and maintenance
Whole homeheat loss, emitters, controls and hot water
Surrey20 locally focused service-area pages
Direct answer
What this service involves
An air source heat pump transfers useful heat from outside air into a wet central-heating and hot-water system. The right result depends on measured heat loss, emitter output, controls, hot-water demand and careful commissioning—not simply choosing an outdoor unit.
When it may suit your home
Air source is often the practical choice where there is a suitable outdoor position, space for the associated hot-water equipment and a viable route to deliver the home’s design heat load. Older homes are not automatically ruled out, but insulation, radiators and pipework must be assessed honestly.
A clear route
How we approach air source heat pumps
- 01
Discuss the current heating system and household priorities
- 02
Complete heat-loss and emitter checks room by room
- 03
Plan outdoor siting, noise, pipe routes, cylinder and electrical requirements
- 04
Issue a system proposal and explain grant eligibility
- 05
Install, commission, balance and hand over the controls
Clear answers
Air source heat pumps: frequently asked questions
Answers are shown in full so they remain useful and accessible. Property-specific decisions still require survey evidence.
Browse the full FAQ library →Will an air source heat pump work in winter?+
Modern systems are designed to operate in cold weather. Performance still depends on correct sizing, flow temperatures and system design.
Do all radiators need replacing?+
Not necessarily. Each room’s heat loss and each emitter’s output at the proposed flow temperature determine what can stay.
Can you help with the Boiler Upgrade Scheme?+
Yes. We help homeowners understand eligibility and the installer-led voucher route. Grant approval always depends on the scheme rules and the property.
What information helps before a air source heat pumps visit?+
Share the property type, current heating fuel, recent energy use where available, comfort problems, planned building work and photographs of the existing equipment. This helps us identify the right survey or diagnostic visit.
How is air source heat pumps priced?+
A reliable price follows a defined scope. Equipment, access, diagnostic or heat-loss work, emitter and cylinder changes, electrical work, controls, commissioning and aftercare can all affect the quotation.
Related services for your next decision
Continue with the services most closely connected to air source heat pumps.
Renewable heating
Heat loss and system design
Room-by-room evidence for sizing heat pumps, emitters and controls.
Explore service →
Renewable heating
Heat pump maintenance
Planned checks that protect performance, reliability and manufacturer requirements.
Explore service →Bring us the real heating problem
Tell us what is working, what is not and what you hope to change. We’ll recommend the right next assessment.
Design evidence
What we check before recommending air source heat pumps
Renewable heating works best when the recommendation follows measured evidence. We look at the building fabric, room-by-room heat demand, the condition and output of radiators or floor circuits, water temperatures, pipe sizes, hot-water storage, controls, electrical supply, access and where equipment can be serviced safely. For a fault or maintenance visit, the same whole-system view helps separate a component problem from an operating or design symptom.
The proposal should state its assumptions, including the design outside temperature, intended flow temperature, expected emitter output, hot-water strategy and any enabling work. Where information is uncertain, we explain what must be measured or confirmed rather than hiding the uncertainty inside a product allowance.
Homeowner decisions
Questions worth resolving early
Think about the rooms that are difficult to heat, how the household uses hot water, acceptable disruption, future extensions, insulation plans and the space available for cylinders, controls or outdoor equipment. These details can change the sensible sequence of work and prevent avoidable alterations later.
Performance and running cost cannot be guaranteed from a product label. The useful comparison is a written system design with clear heat-demand and tariff assumptions. We can also explain where the Boiler Upgrade Scheme may apply, while keeping grant eligibility separate from the engineering decision.
- Clear scope and responsibilities
- Property-specific assumptions
- Commissioning and handover evidence
- Maintenance and fault-support route