GMS

Call Directions Website Contact the business

Grays Mechanical & Maintenance Services are a family run group set in the heart of Buckinghamshire
(1)

GMS is a family run business set in the heart of Buckinghamshire, South of England. With a wealth of over 20 years experience in the industry, we operate as an independent supplier to offer impartial advice and guidance on the best equipment and leading technology, creating the perfect building environment to suit your needs.

12/10/2026

A comfortable, temperature-controlled home is closer than you think. Use our free no-obligation instant quote tool to explore luxury home air conditioning systems tailored to your property and budget.

$Same comfort. A fraction of the climate impact ❄️We finished a two-system installation in Fifield this week, and one hal...$

09/10/2026

Same comfort. A fraction of the climate impact ❄️

We finished a two-system installation in Fifield this week, and one half of it is worth a word of explanation.

The living room system runs on R-290 - propane. It's a natural refrigerant with a global warming potential of 3. The R-32 used in most air conditioning sold today has a GWP of 675, and the R-410A before it was 2,088. R-290 also isn't classified as an F-Gas, so unlike R-32 it isn't subject to the phase-down quota that will keep tightening through the rest of the decade.

In plain terms: it's the lowest-impact option on the market, and it won't be caught out by the regulations in ten years' time.

The two bedrooms are handled separately by a Mitsubishi Electric Elegance multi-split - two indoor units running from a single outdoor unit, so there's only one condenser outside instead of two, and each room still sets its own temperature.
• R-290 single split serving the living room - GWP 3
• Mitsubishi Electric Elegance multi-split serving two bedrooms
• One outdoor unit for both bedrooms - less clutter, tidier pipework
• Heating as well as cooling, so both systems earn their keep all year

R-290 isn't right for every property - siting matters, and that's exactly what a survey is for. We'll give you a straight answer either way. Free, no-obligation home survey: call 01628 522802.

07/10/2026

Air conditioning you can hear, but can't see

The master bedroom in this Gerrards Cross home sits right under the eaves - lovely in every way except that there was nowhere to put a wall unit without spoiling the room. So we didn't put one there at all.

The Daikin ducted unit is concealed in the loft space above, feeding the bedroom through two slim linear grilles set into the ceiling. From inside the room there's nothing to see. The condenser sits discreetly at low level on the side elevation. We also fitted a Daikin Perfera wall unit in the second bedroom, and ran the power supplies to both from the consumer unit.

• Daikin ducted system, 3.5 kW - concealed in the loft, two linear grilles
• Daikin Perfera wall unit, 2.5 kW - down to 19 dB(A) with Flash Streamer air purification
• Both systems controlled from anywhere with the Daikin Onecta app
• Backed by a 5-year Daikin warranty, with servicing handled by us

If a room in your home has nowhere obvious for a wall unit, ducted is almost always the answer - and we'll tell you honestly whether it's practical. Free, no-obligation home survey: call 01628 522802.

06/10/2026

One unit. Two seasons sorted ❄️🔥

Most people call us in July. The ones who call in October are the clever ones - this Beaconsfield living room now has cooling ready for next summer and heating that will carry it through the winter, from the same system.

We fitted a Mitsubishi Electric Elegance 3.5kW single split, with the condenser mounted back-to-back directly behind the indoor unit. That keeps the pipe run to a couple of metres, which means a tidier install, less disruption on the day, and better efficiency for the life of the system.

Mitsubishi Electric Elegance, 3.5kW cooling / 4.0 kW heating
A+++ in cooling, A++ in heating - SEER 8.7 / SCOP 4.7
Down to 18 dB(A) - genuinely quiet in a living room
Built-in Wi-Fi, controlled from anywhere with the MELCloud app
Backed by a 7-year manufacturer warranty as a Mitsubishi Business Solutions Partner

A heat pump in a wall unit will heat a room far more cheaply than most people expect - happy to explain the numbers. Free, no-obligation home survey: call 01628 522802.

27/09/2026

Happy Birthday 🥳 to our Operations Director Callum have a great day!

28/08/2026

Twin‑split Daikin Comfora installation completed this week in Prestwood ❄️🏡

Our engineers have just finished a Daikin Comfora twin‑split air‑to‑air heat pump system at a property in Prestwood - serving both a bedroom and the living room with efficient, quiet, year‑round comfort.

The living room unit was installed on an internal wall, but as always, our team had the solution. No external wall? No problem. With clean routing, and precise positioning, the system was installed seamlessly without compromising performance or aesthetics.

What the homeowner now benefits from:

Independent heating & cooling for two key rooms

Quiet, efficient Daikin Comfora fan coils

Clean, tidy installation throughout

A fully commissioned system ready for immediate use

Another technically sound, visually discreet installation delivered by the GMS team.

If you’re considering air conditioning or heat pump solutions for your home, we’re ready to help.

18/08/2026

Another upgrade completed in Beaconsfield ❄️🏡

Following our recent installation at this Beaconsfield property, our engineers have now added a second Mitsubishi Heavy Industries single‑split air‑to‑air heat pump system - this time serving the open‑plan kitchen space.

To accommodate the internal wall location, the team fitted a condensate pump, ensuring reliable drainage and long‑term performance. As always, the installation was completed with precision, tidy routing, and a clean finish throughout.

What the homeowner now benefits from:

Efficient heating & cooling for the open kitchen

Quiet, reliable Mitsubishi Heavy Industries performance

A discreet wall‑mounted indoor unit

Fully commissioned system ready for year‑round comfort

Another professional residential installation delivered by our engineers - expanding comfort across the home with dependable, high‑quality workmanship.

If you’re considering air conditioning or heat pump solutions, our team is ready to help.

10/08/2026

Twin‑split comfort delivered in Maidenhead ❄️🏡

Last week our engineers completed a Daikin Comfora twin‑split air‑to‑air heat pump installation at a property in Maidenhead - providing efficient, year‑round comfort to both the kitchen and master bedroom.

This setup gives the homeowner control across two key living spaces, with quiet, reliable performance from each wall‑mounted unit. As always, the installation was completed with precision and care:

Two sleek Daikin Comfora fan coil units

Clean routing and tidy finishing throughout

Full commissioning and performance testing

A seamless installation designed for long‑term efficiency

Another professional residential project delivered by our team, combining technical expertise with a clean, discreet finish.

If you’re considering air conditioning or heat pump solutions for your home, we’re ready to help.

28/07/2026

It’s been a busy few weeks at GMS! We’ve welcomed new engineers into the team and prepared a fresh fleet of vans to support our customers during the peak season.

Thanks to Ford Slough for getting our vehicles lined, secured, and ready to go in under a week — a brilliant effort that helps us stay responsive and reliable for all the homes and businesses we support.

We’re excited to continue growing as part of the wider GS Group and look forward to delivering even more great service across the region.

21/07/2026

Another Bourne End home upgraded with year‑round comfort ❄️🏡

Last week our engineers completed a single‑split Daikin Sensira air‑to‑air heat pump installation at a residential property in Bourne End. A clean, efficient system designed to deliver reliable cooling through the summer and comfortable heating in the colder months.

This installation included:

A sleek, wall‑mounted Daikin Sensira indoor unit

Full refrigerant and electrical connections

System commissioning and performance testing

A tidy, discreet finish that blends perfectly into the home

The Sensira range offers excellent efficiency, quiet operation, and dependable performance — and our team ensures every installation is completed to the highest standard.

Address

Bourne End
SL85YS

Telephone

+441628522802

Website

http://www.graysmaintenanceservices.co.uk/

Alerts

Be the first to know and let us send you an email when GMS posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Contact The Business

Send a message to GMS:

Want your business to be the top-listed contractor in Bourne End?

GMS