Accredited installer & certified
Supply, installation, servicing and repair for homes, businesses and vehicles across Derbyshire — with a depth of expertise most engineers simply don't have.
From a single room in your home to a full commercial system — with 33 years of experience there isn't much we haven't seen or can't handle.
"Not every engineer is equal.
Experience makes the difference."
"There are engineers who fit units — and engineers who truly understand the systems. Our team is firmly in the second category."
Derbyshire Air Conditioning is a family-founded business with deep roots in the county. Led by Ash — born and bred in Heage, with over 33 years in the trade — we've grown into a trusted team of engineers serving homeowners, businesses and vehicle owners across Derbyshire and further afield.
We're not a large faceless contractor, and we're not a sole trader with a van. We're a small, close-knit professional team that takes genuine pride in every installation, service and repair. Every member shares the same standards Ash has built his reputation on — attention to detail, clean workmanship, and solutions that actually work.
What sets us apart is experience that can't be shortcut. Ash is one of a very small number of engineers in the UK with the depth of knowledge to diagnose and fix faults that have defeated others. As a Mitsubishi Diamond Dealer, we also offer an industry-leading 7-year warranty that most local companies simply cannot match.
Experience, honesty and quality on every job. Not the cheapest — the best value.
We cover all of Derbyshire and into the neighbouring counties. For specialist and complex projects, we travel nationwide.
Nationwide specialist work: For complex installs, listed buildings or specialist fault diagnosis, we regularly travel beyond Derbyshire. If you've struggled to find an engineer with the right expertise — get in touch regardless of where you are.
"Derbyshire Air Conditioning Ltd installed an excellent AC unit, very professional, on time and very competitive pricing. Ashley gave advice on systems and location of unit for maximum efficiency, noise reduction and aesthetics. Overall an excellent service, would highly recommend with no hesitations."
"Brilliant service provided by Ashley and his team. Fitted 3 quality Mitsubishi AC units in our home with zero mess and professional workmanship. Moved all furniture, cleaned up afterwards, and Ashley ensured we were totally happy before leaving."
"Friendly professional and tidy job fitting 2 air con units for us. We would definitely recommend, first class job. We just had our air conditioning fitted by Ash and Rick — they were professional, friendly and amazingly clean in how they worked."
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No call centres, no middlemen. WhatsApp us for the fastest response — or call to speak to us directly. We'll get back to you the same day.
We're a small team and we answer our own calls and messages. WhatsApp is the quickest way to reach us — send a message any time.
It depends on the system, property type and complexity. A single-room domestic unit typically starts from around £1,500–£2,500 fully installed. Multi-room systems and commercial work vary more. We provide free, no-obligation quotes — just get in touch with your requirements.
A single wall-mounted unit can usually be installed in a day. Multi-room systems typically take 2–3 days depending on complexity. Commercial projects vary — we'll give you a clear timeline during the quoting process.
We exclusively install Mitsubishi Heavy Industries, Daikin and Fujitsu. These are the most reliable and energy-efficient systems available. We won't fit equipment we don't believe in.
It's an accreditation from Mitsubishi Heavy Industries recognising installers who meet their highest standards of training and purchase volume. As a Diamond Dealer, we can offer a 7-year warranty on split and multi-split systems — most local companies can only offer 5.
We're based in Heage, Derbyshire and cover all of Derbyshire plus neighbouring counties. For specialist or complex projects, we travel nationwide. Get in touch and we'll confirm.
Yes — we specialise in exactly this. Ash has over 33 years of diagnostic experience across every major brand and system type. We regularly resolve faults that have defeated other engineers.
WhatsApp us for the quickest response — we typically reply the same day. For emergencies, call us directly. We offer emergency callouts for commercial and hospitality customers.
