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Claim this listingCrystal Windows and Doors Limited
4.5
916 Google reviews
1–2 days
Typical install time
£7,500
BUS grant amount
About Crystal Windows and Doors Limited
Crystal Windows and Doors Limited is an MCS certified air source installer based in Essex. They are registered with the Boiler Upgrade Scheme, meaning they can help you claim up to £7,500 towards your installation.
Coverage area
Based in Essex, RM7 7PN
Areas served:
Reviews
4.5
916 Google reviews
Based on verified Google reviews
Joseph Proudfoot
Brilliant experience from Crystal fitting my front door and French doors for the back of the house. I had Terry come round to quote up & look at the job. Terry is incredibly informative and authentic which was the definitive reason I chose to go with Crystal. Same evening booked via the office with a surveyor to come & look and a fitting booked in all within 3 weeks of that call. Gary & Mason attended to fit the doors and they were great. Very informative, tidy & clean and top workmanship from the pair. Will be requesting these two back for when I do my windows. All-in-all, I highly recommend Crystal.
Linda Kay
I contacted Crystal Windows about upgrading my very outdated Windows on line and I received a call back immediately. A representative was sent and I was given a quotation. Long story short I had my Windows and back door installed within a few weeks and all was done perfectly. My experience and interactions with the office, surveyor to the installers are nothing but excellent.The whole team are very polite, helpful, friendly, courteous and above all professional. The office picked up on a fault and was rectified straight away. So I am very pleased with the service I received from Crystal. Will definitely recommend and use them again.
Nasreen Butt
I'm really proud of my new front door. The Crystal salesperson, surveyor and fitter were very efficient and respectful of my property. They turned it around from start to finsh all in just a week. Crystal windows and doors have transformed my house from the 1970's straight in to the 21st century. I think my front door is awesome. Thank you :)
Gareth Clayfield
We are absolutely thrilled with our new front door! The quality of the product is excellent, and the installation team was incredibly professional and efficient. What really stood out was the fantastic customer service. They proactively followed up on a small enquiry we had after the installation, demonstrating a real commitment to customer satisfaction. Highly recommend!
Kirsty Jukes
Richard and Casey were amazing from start to finish, very helpful, even when they had to redesign the conservatory. Fabulous service, right from first visit to end …they were tidy and professional and very clean. The Quality and look of windows and door are fabulous. … Really pleased with the outcome. Thank you 😊 Would recommend them
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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.
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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