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Cosy Castle Limited

MCS Certified BUS Registered
92 South View Crescent, Sheffield, Yorkshire, S7 1DH
Air Source specialistBUS grant eligible7 reviewsServes 2 regions

5.0

7 Google reviews

1–2 days

Typical install time

£7,500

BUS grant amount

About Cosy Castle Limited

Cosy Castle Limited is an MCS certified air source installer based in Yorkshire. They are registered with the Boiler Upgrade Scheme, meaning they can help you claim up to £7,500 towards your installation.

System typesAir Source
BUS grant handledYes

Coverage area

Map coming soon

Based in Yorkshire, S7 1DH

Areas served:

LondonSouth East

Reviews

5.0

7 Google reviews

Based on verified Google reviews

D

David Reese

a year ago

Cosy Homes North West is a great company. Paul’s the best plumber we’ve ever had. He ticks all the boxes - very pleasant, reliable and efficient. He has always sorted out our plumbing problems, even when previous plumbers have failed. We’d definitely recommend him to anyone.

K

Kristian Hynes

a year ago

Homes North West LTD are great, Paul is an amazing guy who works harder than any other trades I have used before. He has done multiple jobs at different properties for me for several years now and the results are always perfect. New bathroom, kitchen, repairs, and yearly checks and certificates all done to the highest standard and his response times to anything emergency related have all been fantastic. I cant rate them high enough, you will not need to use anyone else again I can promise you that.

D

David Halicki

a year ago

We've used Cosey Homes NW Ltd, for well over 10 years, firstly when we lived on the Bird Estate and since we moved to the bungalow on Yew Tree Lane in 2018. They were recommended to us by our sister in laws parents. What it's annual gas inspections, gas fire repairs, minor plumbing jobs to fitting new gas central heating, gas fire, fire place and chimney breast, We've used and will continue to use them. Professional, reliable, high quality 👌 friendly service. Yes, we highly recommend them.

N

Nicola Sykes

a year ago

Best plumber ever. Solved a few problems for us - domestic boiler related, as well as some commercial plumbing work for our business. Very reliable, and very honest. No problem recommending Paul.

R

Rob Haughian

a year ago

Paul was professional & knowledgeable, and quickly diagnosed the issue with our boiler, explaining everything in a clear and understandable way and offered helpful advice on maintaining the system in the future. Highly recommended!

Showing 5 of 7 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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Quick facts
Regions covered2 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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