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Greengen UK Ltd

MCS Certified BUS Registered
Unit A, Cober house, Wheal Vrose Business Park, Helston, Cornwall, TR13 0FG
Air Source & Exhaust Air specialistBUS grant eligible65 reviewsServes 1 regions

4.8

65 Google reviews

1–2 days

Typical install time

£7,500

BUS grant amount

About Greengen UK Ltd

Greengen UK Ltd is an MCS certified air source and exhaust air installer based in Cornwall. 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 Cornwall, TR13 0FG

Areas served:

South West

Reviews

4.8

65 Google reviews

Based on verified Google reviews

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Mark Thurston

4 months ago

We had very specific requirements for our air source heat pump project with tight timeframes due to a leaking boiler and limited hot water. Neil from GreenGenUK listened to our needs and went out of their way to accommodate as much as possible, designing to spec. The survey was thorough and the presales spec was highly detailed. Jack, our GreenGenUK plumber, carried out the plumbing work to an exceptional standard (see photos). We used a different plumber to install our rads to reduce costs and GreenGenUK worked together with our plumber. However, in retrospect, we wish we had used GreenGenUK to perform the full install as their workmanship was neat and high quality and would have represented better value. We had personal aftersales service from the company director, Rob, who really knows all the technologies they sell. Overall, I can't fault the service and I don't think we were the easiest of customers! I would highly recommend the team and am looking forward to using them for my next project.

J

Jeremy Legge

6 months ago

Reference: Morgen Heating Engineer Dear GreenGenUK I was not the only one to notice Morgen’s very neat installation of the heating system. Another Heating Engineer, who saw this very tidy and neat installation, said he would employ Morgen there and then. Morgen is a very polite young man and is an excellent ambassador for the GreenGen team. We are very pleased with his work.

D

D B

a year ago

I've just had GreenGenUK to install solar panels on my west facing roof to compliment my existing east facing array, and to integrate this into the existing battery storage. I must say what an excellent job was done throughout the whole process. From the initial sales visit, the quotation, through the detailed survey, the scaffold, the panel fitting and the wiring exercise, at every stage each team performed professionally and efficiently. I can't recommend them enough, especially the electrical team of Mike and Fionn who deserve a special mention for their friendly and helpful manner, nothing was too much trouble. Thank you GreenGenUK

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Mandy Smith

3 months ago

We had installed an air source heat pump by greengen, we couldnt fault the fitting but and its a big but the after care/follow up is absoulutly diabolical. Appointments made, waited in, had time off work and no show and no explanation. We had to phone the office to let them know the plumber never showed up. Re booked assured we would be 1st call of day (by the office) time off work again, called office as no show and appatently double booked and would arrive with us 3 hours after time we were given. If this is their best after sales service i wouldnt bother either promoting them or taking out their after sales care plan.

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Jonathan

a year ago

Really pleased with our recent heat pump installation from Greengen. Communication and quality of work was great throughout. Big thanks to Morgen for the quality and tidyness of the plumbing work, was really impressed with this. Thanks also to Shaun for the site meetings and sorting logistics. Would happily recommend to others. Thanks again!

Showing 5 of 65 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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