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Lower bills · Energy security · Lower emissions

Heat pumps, solar panels and batteries for forward-thinking homeowners.

See what you could save in about 30 seconds — then connect with our fully certified, locally based installer teams.

Free · Takes 30 seconds

Which green tech are you interested in?

Pick one, two or all three. Most homeowners go for a combo!

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You could save

£—

per year

CO₂ reduction

—

kg per year

An illustration for an average home of this type — remember every home and family differs.

Independent, social-impact driven, Certified B Corporation
Expert support, advice and installation
Access grants, finance (if you're eligible!) and even the odd freebie
Certified B Corporation

Held to a higher standard

We're a Certified B Corporation — meeting high standards of social and environmental performance, transparency and accountability. Independent by design, our job is doing right by you — and the world in which we live.

Working alongside Department for Energy Security & Net Zero Lendology CIC Community Energy England

Our three technologies

Heat pumps, solar & batteries

The building blocks of a greener, cheaper-to-run home. Mix and match — or let us suggest a combo.

Heat pumps

Swap your gas, oil or LPG boiler for clean, efficient heating — and grab the £7,500 Boiler Upgrade Scheme grant if you're eligible too.

Explore heat pumps →

Solar panels

Generate free, clean electricity from the Sun, whilst relying much less on the Grid. Meet up to 100% of your annual electricity needs — for 25 years.

Explore solar →

Home batteries

Store cheap off-peak or solar-generated electricity and use it when you need it most. Get much more value out of your solar panels.

Explore batteries →

What Thermly does

Find your Green Tech Combo

Seven ways to mix heat pumps, solar panels and batteries — aligned to your budget and your home.

Full Kit & Kaboodle

The all-in option — future-proof your home while you generate and store your own clean energy.

Heat pumpSolarBattery

Super Power

Generate it, store it, use it — and sell back anything you don't need.

SolarBattery

Double Bubble

Best of both: a future-proofed home and a lot more off your energy bill.

Heat pumpSolar

Store & Save

A clean, efficient heating system using low-cost off-peak electricity stored for when you want it most.

Heat pumpBattery

Future Proofer

Wean your home off fossil fuels — a heat pump futureproofs your heating system, and heats it much more efficiently.

Heat pump

Generator

Generate your own clean, free electricity from the Sun for the next 25 years or more. Simple.

Solar

Night Owl

Store electricity when the rates are lowest — overnight — and use it when you need to.

Battery

Not sure which?

Choose them all, see the impacts and then adjust accordingly.

The £7,500 Boiler Upgrade Scheme

A £7,500 government grant — and don't worry about the paperwork

Homeowners in England and Wales who are replacing a fossil fuelled heating system can qualify. We'll check your eligibility, handle the application and knock it off the total price. You never pay it upfront.

£7,500 off a heat pump, confirmed before you pay your deposit
Our installer teams handle the application to OFGEM
Most people see the cost of installation more than halved as a result
£7,500knocked off the cost of your heat pump through the Boiler Upgrade Scheme.

How it works

What are the next steps?

1

Get your free report

A few quick questions and we'll build your personalised report in about 30 seconds.

2

Compare installers

We partner with expert local installer teams — compare their estimates and pick the one for you.

3

Survey

Your chosen installer visits for a proper assessment. A proper job takes time — and this is an essential step.

4

Installation

Up to a week depending on the tech. Then watch the benefits as they start to stack up.

5

Aftercare

We'll check in throughout your first year, and stay on hand thereafter.

“

It just felt like the right time, and the right thing to do.

"We had been talking about it for a while, but it was when Thermly got in touch that we finally just went for it. We had a great installer who came around and spent a few hours with us, explained absolutely everything — we had loads of questions, but they explained exactly how it would work."

Philip
Full Kit & Kaboodle customer · Somerset
Philip's newly installed air-source heat pump Philip outside his home

Good to know

Questions homeowners ask us

Absolutely. A well designed and installed heat pump will keep your home warm in temperatures down to about minus 15°C. It doesn't tend to get that cold here though.

Despite the name, no. Sorry. But if you choose to install a heat pump through Thermly we'll give you a £250 voucher from John Lewis, which you can spend towards one.

We've done the hard work of getting the best installers on board, so we know they'll do a great job. We'll always give you an honest and independent opinion, and — crucially — we'll make sure the price you're paying is fair. We'll act as your own personal concierge, taking the stress and strain away. Everything is kept safe and secure on Thermly, so anytime you need details, documentation or paperwork, it's there when you need it. If anything goes awry, we'll fix it. We're friendly, helpful, we love what we do and we're doing this for all the right reasons. Trust the process — it's taken us long enough to get right!

We can give you a very good idea of that if you could answer a few simple questions for us. Unfortunately there isn't one size fits all. We have some more articles on costs in our Info Hub if you're interested, but the best thing to do is get a figure tailored to your circumstances. There is £7,500 available towards the cost of a heat pump in the form of the BUS grant. You'll also earn income from selling electricity back to the Grid from solar panels. Depending on where you live, we may also be able to signpost you to our finance provider, Lendology.

It depends on your home, how you use it, your budget, and what you're trying to achieve. Click the big orange button, choose a Combo and answer a few simple questions. It'll take 30 seconds and then we can provide you with a free report which will answer a lot of your questions.

See what you could save

Free personalised report · about 30 seconds