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Sustain Heating and Renewables Ltd

MCS Certified BUS Registered
Unit 5, Carey Developments, Tweed Road, Somerset, BS21 6RR
Air Source & Exhaust Air specialistBUS grant eligible16 reviewsServes 1 regions

4.5

16 Google reviews

1–2 days

Typical install time

£7,500

BUS grant amount

About Sustain Heating and Renewables Ltd

Sustain Heating and Renewables Ltd is an MCS certified air source and exhaust air installer based in Somerset. They are registered with the Boiler Upgrade Scheme, meaning they can help you claim up to £7,500 towards your installation.

System typesAir Source, Exhaust Air
BUS grant handledYes

Coverage area

Map coming soon

Based in Somerset, BS21 6RR

Areas served:

South West

Reviews

4.5

16 Google reviews

Based on verified Google reviews

K

Kyle Baker

a year ago

Initial experience with Sustain was very positive, they took a very professional approach to quoting for my air source heat pump and explaining what was required to have an efficient system. During the install they worked to limit impact on our home and accommodated minor changes to improve the system. However, since that first installation work I have uncovered a host of quality issues which I shared with Sustain and got a huge amount of backchat rather than an apology and offer to repair. This varied from cables hanging loose to the underfloor screed not being poured flat to multiple leaks on brazed connections on the piping (so not minor!). I wouldnt recommend Sustain as a company for installation of your heat pump Their servicing costs are also very high compared to others, £300 a year vs £120-150 quoted elsewhere.

P

Phil

9 months ago

We had air conditioning installed in our home by Sustain, what a pleasure to deal with a very efficient company whose aim was to put the customer first. Right from the first contact we were informed of every stage, every phone call to them was answered and any quires solved as quickly as possible. They left our home after installation as they found it, clean and tidy, all the excess packaging etc removed. I certainly know who I'll be dealing with in the future. Pity there's only 5 stars.

J

Janice Collins

9 months ago

Top notch customer service, great people to deal with. All round quality experience and a great outcome. Solar panels and batteries installed on time and to the quoted price, good advice and guidance provided. These people know their stuff and are a pleasure to deal with. Many thanks!

S

Seb Anthony

2 years ago

We had solar PV installed a couple of years ago. Everything was neat and tidy and all the staff friendly. It performs very well. This winter we had sustain back to install a new heating system and heat pump. Professionally designed. Carpets and floorboards were taken up and holes for piping created. House was put back exactly as before and everything done was neat and tidy and looks great. House is comfortably toasty throughout… we never managed to achieve this level of comfort with our old gas boiler! Perfect post install support too. Not 1 complaint, totally recommend.

T

Tim Crowfoot

6 years ago

Suastain Eco have recently fitted an LG air sourced heat pump for us. The quote was competitive, not the cheapest but not the most expensive. I got a fitting date and the team arrived on time and the work was completed to a high standard withing the time quoted. The fitting team were excellent and made a very neat job of the pipework and the rest of the installation. They cleared up nicely and always left the house tidy at the end of each day's work. The system is working well.

Showing 5 of 16 reviews. View all on Google

Frequently asked questions

How do I know you’re properly qualified and certified to install heat pumps?

We are MCS‑certified and registered with an approved consumer protection/competent person scheme, which is essential for quality assurance and to access grants like the Boiler Upgrade Scheme (BUS).

Can you tell me if a heat pump is actually suitable for my home?

We carry out a detailed home assessment, including property type, insulation levels, existing heating system and available outdoor space, to confirm whether a heat pump is a good fit.

What type and size of heat pump will you recommend for my property, and why?

We design the system using a heat‑loss calculation for your home, then match the correct kW size and model (for example, air‑source vs ground‑source) so it runs efficiently and reliably.

What will the full installation cost be, and what’s included in your quote?

Our fixed quote clearly lists the heat pump, cylinder, controls, labour, scaffolding (if needed), electrical work and any radiator or pipework upgrades, so you know exactly what you’re paying for.

Can you help me access government grants like the Boiler Upgrade Scheme?

Yes, as an MCS installer we can confirm your eligibility, apply for the BUS grant (worth up to £7,500) on your behalf and deduct it directly from your quote.

How much disruption should I expect during installation, and how long does it take?

A typical air‑source heat pump installation takes around 2–5 days, and we’ll agree locations for the indoor and outdoor units, manage any planning considerations and keep you informed each day.

Will I need to replace my radiators or upgrade anything else in my home?

After the heat‑loss survey, we’ll advise if any radiators, pipework, electrics or hot‑water cylinder need upgrading so the system can run efficiently at lower flow temperatures.

How noisy is the outdoor unit and where will it be installed?

Modern heat pumps are designed to be quiet and must meet UK noise regulations; we’ll position the unit to minimise any impact on you and your neighbours and comply with local planning rules.

What warranties, servicing and aftercare do you provide?

You’ll get manufacturer warranties on the heat pump plus our workmanship guarantee, and we offer ongoing servicing and support to keep your system performing at its best.

What running costs and savings can I realistically expect compared to my current boiler?

We’ll estimate your likely annual running costs and potential savings based on your current fuel type, insulation level and tariffs, using real‑world performance data rather than lab figures.

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Verified credentials
NICEIC Approved
BUS Registered
Quick facts
Regions covered1 areas

Boiler Upgrade Scheme

Up to £7,500

off your heat pump installation

This installer handles the full BUS grant application — deducted directly from your quote. No upfront payment needed for the grant amount.

Scheme open until 2028 — limited funding available

Check your eligibility

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