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Claim this listing4.8
65 Google reviews
1–2 days
Typical install time
£7,500
BUS grant amount
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.
Based in Cornwall, TR13 0FG
Areas served:
4.8
65 Google reviews
Based on verified Google reviews
Mark Thurston
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.
Jeremy Legge
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 B
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
Mandy Smith
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.
Jonathan
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!
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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).
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.
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.
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.
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.
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.
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.
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.
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.
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.
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
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