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J & J Crump & Son Ltd

MCS Certified BUS Registered
1A Nethermour Lane, Killamarsh, Sheffield, n/a, S21 1BZ
Air Source specialistBUS grant eligible76 reviews

3.9

76 Google reviews

1–2 days

Typical install time

£7,500

BUS grant amount

About J & J Crump & Son Ltd

J & J Crump & Son Ltd is an MCS certified air source installer based in n/a. 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 n/a, S21 1BZ

Reviews

3.9

76 Google reviews

Based on verified Google reviews

A

Allan Green

2 months ago

Booked a free cavity wall consultation which was easy and smooth. Adam drove all the way from Sheffield to Solihull only to discover that unknown to myself, insulation had been fitted by the previous owners. Whilst he was present, Adam provided me with general advice on further insulation and heating options that have helped shape my next steps. Adam’s attitude and professionalism was top class and I can’t thank him enough for his help and guidance. I wouldn’t hesitate to use Adam in the future and I’m grateful for his help. He is a huge credit to the company. Thank you.

D

David Ross

a month ago

Contacted J&J Crump yesterday regarding an issue with my central heating system 3 way valve. Spoke to Dave (Heating Manager) and at 9am this morning heating engineers attended my property and completed the necessary repairs. The engineers were polite & friendly and a credit to this excellent business. It’s a pleasure to deal with such a professional company - thank you J&J Crump!

C

Chris Scoffield

5 months ago

We recently had JJ Crump to insulate our loft at our new home. From the advisor Adam who came to assess what we needed doing, to the insulation team, it only took four weeks. They did a very clean and professional job and our home is a now much warmer. We would highly recommend them.

S

Steve Stimson

2 years ago

We were quoted Extraction of old insulation (4/5 bags) Refill with new. 2.5 Days to complete all works. Price agreed. We actually had Extraction of old insulation (1.5 bags) Refilled with new 1 day to complete (Started at 10 am until 5 pm) I then queried the quote explaining this as the guys who came around were contractors and they confirmed they would be able to fix in another job because ours took less time. So J&J Crump is now earning a free job that I have paid for. Other issues – I had to cancel the initial date due to work commitments, however, to arrange another date took several months because they did not reply. I would give them a min of 2 weeks to reply before chasing. I did receive one rather rude reply. I then phoned them after 3mths and they booked me in straight away. The insulations guys were professional and great to talk to. The work done looks good but I do not have x-ray vision to check the walls. No after-sales service to check how things went. But, they were good value and we used no grants or subsidies. It was a personal contract between me and them. I just think they should lower the final bill due to it taking a lot less time and less having to be removed. Thus lowering their recycling costs.

K

Karen Furr

9 months ago

Had my cavity wall insulation done today, fantastic guys, cleaned up after them selfs, very polite. Not sure though when my extractor fans will be fitted, no one has been In contact as yet, and not sure if you get paper work for all this work, I forgot to ask. Thank you thank you

Showing 5 of 76 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

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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