Whole System Design. Lifetime Support.

We design how a home makes, stores and uses energy.

Ground and air source heat pumps, solar and battery storage, heating and cooling designed room by room, and the controls that run all of it as one system. Specified around your property, commissioned to perform, and supported for as long as you own it.

Installing across the South West since 2009

Ground source specialists

MCS | RECC certified

We specify Maxa & Ecoforest

Whole System Design. Lifetime Support.

We design how a home makes, stores and uses energy.

Ground and air source heat pumps, solar and battery storage, heating and cooling designed room by room, and the controls that run all of it as one system. Specified around your property, commissioned to perform, and supported for as long as you own it.

Ground Array installation in Devon by South West Heat Pumps

Installing across the South West since 2009

Geothermal & ground-source specialists

MCS | RECC accredited

We specify Maxa & Ecoforest

Why We Exist

More than a boiler replacement.

17+

Years designing and installing renewable heating systems

1k+

Heat pumps installed

800+

Systems serviced annually

4.7

Trustpilot Rating

Air source heat pumps are now mainstream. MCS recorded more than 60,000 certified heat pump installations in the UK in 2025 and air source was the majority. Quick to fit, widely available, and for a like-for-like replacement, a positive change.

Our experience since 2009 tells us there is more to it than that. We look at the whole system: how heat is generated, how it reaches each room, what the roof produces, where surplus is stored, and which controls decide when any of it runs. We model the running cost, show you the carbon saved, and look after it for its lifetime.

Ground source sits at the centre of that where long-term performance matters most. Ground that holds a steadier temperature for most of the year is the best starting point available, and for ground source heat pumps we specify Ecoforest, and nothing else. Where a site cannot take an array, we specify air source from Ecoforest and Maxa, both European, both running natural R290.

Seventeen years and more than a thousand systems across Devon, Cornwall, Somerset, Dorset and Wiltshire have taught us the same thing. A home does not run well because of the heat pump. It runs well because of the four decisions behind it.

"South West Heat Pumps are a great team. They are efficient, professional and conscientious, and their work is of a very high standard. They most definitely go the extra mile. We actually didn’t want them to finish the work early as we loved having them around!’

Design & Installation

An experienced, design-led team.

Heat-loss design, ground & air source, solar, battery and hybridisation. All specified around your home, not a price list. This is what we excel at.

Service Division

Service, Diagnostic & Repair.

Any heat pump, any brand, across the South West.

The properties we design for.

Every project is a whole, intelligent system. We design systems with heating, cooling, solar and storage working together, not just a replacement heat source.

01

Retrofit

Existing family home retrofitted with a heat pump, solar panels and battery storage

Transform an existing home into an intelligent, low-carbon system with heating, cooling, solar PV and smart tariff integration. Designed to cut bills and carbon. Not just swap the boiler.

  • Heating
  • Cooling
  • Solar & Battery
  • Solar hybridisation
  • Smart tariff ready

02

Refurbs

Period property undergoing a deep retrofit with a design-led heat pump system

Extending an existing home, renovating a substantial period property and bringing them up to modern standards of insulation. Design-led heating and cooling on a room by room basis allows you to mix underfloor heating with radiators, dual fuel towel rails and fan coils to suit how you want to live.

  • Deep retrofit
  • Extensions
  • Period & listed properties

03

New Build

Architect-designed new build home with a heat pump specified from the foundations up

Designed off plan, designed to achieve SAP and build regs compliance and installation scheduled alongside your build schedule. High performance ground or air source heat pump alongside MVHR, a mix of heating and cooling emitters with solar pv and solar hybridisation.

  • Ground & air source heat pumps
  • MVHR
  • Solar PV
  • Solar hybridisation 
  • Compliance ready

04

Barn Conversions

Class Q barn conversion heated by a ground source heat pump system

Class Q barn conversions.
Designed off plan, designed to achieve SAP and build regs compliance and installation scheduled alongside your build schedule. High performance ground or air source heat pump alongside MVHR, a mix of heating and cooling emitters with solar pv and solar hybridisation.

  • Ground & air source heat pumps
  • Solar PV
  • Solar hybridisation 
  • Compliance ready

05

Light Commercial

Commercial heat pump installation serving a small business building

Existing offices, workshops, public community buildings, retail premises, small hotels can all be supported with design led heating and cooling systems and if the required capacity is under 45kW then you may also be eligible for the Boiler Upgrade Scheme.

  • Light commercial
  • Heating
  • Cooling

Our Approach - The Thinking

A heating system considers four components.

A renewable system is about four decisions, not one single product purchase. Decisions made today shape bills, comfort and compliance for the next 15-20 years. We design every element to work as one.

01

The energy source

Ground, water or air, sized from a measured heat loss calculation for your building rather than its floor area. Where the site and budget allow, we lead with ground source for the highest efficiencies and lowest running cost.

02

What the system delivers

Heating for the home, a pool, hot water and increasingly, cooling. Mechanical ventilation with heat recovery combined to reduce energy consumption and improve air quality. Solar PV and battery so the property generates and stores its own energy rather than buying all of it.

03

How energy meets the room

Underfloor heating, correctly sized radiators, fan coils where a room needs cooling as well as warmth. Zoned and specified room by room, because a south-facing glazed living space and a north facing bedroom are not the same.

04

The intelligence that ties it together

Controls, monitoring, solar hybridisation and smart-tariff scheduling, with remote diagnostics so performance can be monitored rather than assumed.

The Investment

Funding to support your switch to renewable heating

The Boiler Upgrade Scheme funds £7,500 towards a qualifying air or ground source heat pump installation.  For off-gas-grid properties currently heated by oil or LPG this has been increased to £9,000 on applications made between 21 July 2026 and 31 March 2027. Qualifying work carries 0% VAT until 31 March 2027.

As an MCS-certified installer we claim it on your behalf and show it as an upfront discount: you never pay it and reclaim it. We make the application before we issue your contract so you know exactly what you will need to pay.

£7,500

Boiler Upgrade Scheme grant towards an air or ground source heat pump, plus 0% VAT on qualifying work.

The Proof

A selection of our installations

A 6 bedroom manor house in the South West get a rennovationand renewsable heat through ground source heat pump

Manor House & Holiday Lets

Mid Devon, Manor House & Holiday Let Renovation

A six-bedroom manor house, an attached two bedroom cottage, and three holiday let conversions, all heated and supplied with hot water from one 75kW ground source system, drawing on ten boreholes drilled to 105 metres where a horizontal array wasn’t possible.

"South West Heat Pumps are easy to deal with. They don't mess you around, they tell you things you need to understand. They're transparent and honest."

The feedback

4.7

★★★★⯪

Based on 210+ review on Trustpilot

★★★★★

SWHP performance

“From the start 5 years ago when the ground source system was installed and since then with the annual service visits, SWHP have been helpful, reliable, efficient and engaging. The SWHP folk mirror the service that the company provides.
Thank you”

North Devon · Peter Clark

★★★★★

I was so impressed with the service

“I was so impressed with the service. It was easy to arrange an appointment, the service was prompt, friendly and efficient – followed up by emails. The engineers clearly knew their job and were so lovely and friendly. I unreservedly recommend South West Heat Pumps.”

Devon · Joanne

★★★★★

Mitsubishi heat pump system

“We had SWHP install our system 5 years ago and they were really helpful and on it! It works like a dream. Sue takes care of the admin and always super helpful. Our yearly service just done by Martin recently who was a great guy and very knowledgeable … went the extra mile!”

Verified review · Little Silver Richard

Service Division · Diagnostic, Service & Repair

Looking after every heat pump.

Any heat pump, any brand, across the South West, whether we installed it or not.

Annual Serice Plan

Stay efficient. Stay covered.

Planned preventative maintenance that keeps your system at peak efficiency and protects your warranty.

  • Annual system health check & service
  • Efficiency, pressure & safety checks
  • Priority booking and breakdown support

Diagnostics & Repairs

Something not right? We'll find it.

Expert fault-finding on any make of heat pump — we’re the team other installers call.

  • Diagnostic visit & full system assessment
  • Underperformance investigation
  • Repairs across all major brands

4.7

★★★★⯪

Based on 210+ reviews on Trustpilot

The First Step

It starts with a conversation.

We specify Ecoforest and Maxa heat pumps. Chosen for their advanced specifications including: high temperature design, market leading SCOPS, smart-tariff ready, hybridisation capable and built to integrate with solar and battery. We lead with ground source: our signature expertise.

Tell us about your project

A few essentials so we can prepare for the conversation. There’s no obligation, no instant price.

Tell us about your project

Start The Conversation

Whether you're planning a system or looking after one

Prefer to talk it through first? Call 01271 850 040.

MCS certified | RECC member | Gas Safe | Maxa & Ecoforest | Installing since 2009

It starts with a conversation

We design renewable heating systes around your home and the way you live. 

Prefer to talk to us first?
Call: 01271 850 040

Tell us about your project

Get Support

Whether you’re looking to book a service or ask about diagnostics, it starts with understanding your project.

Prefer to talk to us first?
Call: 01271 850 040

Tell us what you need