Chillers, switchboards, fire pumps and water plant. Our engineers plan the work, and it is installed by crews we prequalify and supervise daily. Pick a system to see where it sits in the building and what our method is for it.
Roof plant · every guest room
Cooling runs hard for most of the year in Saudi Arabia. When the plant struggles, the rooms at the end of the pipework and under the roof notice first.
SEC substation interface and the hotel's LV room · risers · every floor
Brand standards add load: more sockets, USB points, EV chargers, bigger kitchens. We start at the main switchboard and the SEC supply.
Basement pump room · stair risers · every floor
Fire and life safety (FLS) drawings are prepared and stamped by a licensed engineering office and approved by Civil Defense before work starts. Fire systems are installed only by Civil Defense-licensed contractors, under our site management, and nothing is handed over until it has been tested in front of you and inspected by Civil Defense.
Basement and roof tanks · booster set · every bathroom
A weak shower on the top floor is usually fixed in the plant room, not in the bathroom.
What's included
A small permanent team of engineers runs every job: project manager, MEP engineer, QS and procurement, HSE and QA. Installation crews work under the permits and our inspection plan, and our engineers check their work. CORETECH is liable to you for every subcontractor's work.
HVAC and ventilation
Power, lighting, standby
Water in, water out
Installed only by Civil Defense-licensed contractors
Coordinated and interfaced; we don't claim them as a fifth trade we install. The brand's approved lock, Wi-Fi, IPTV, room-management and CCTV vendors work under our programme and the permits; we provide the containment, power and connections, and test the interfaces to the PMS, POS and lock server before a floor returns to sale.
Some hotel systems stay under the maker's or a licensed specialist's contract. We bring them into one plan, one shutdown schedule and one weekly report, and test the points where they meet our work.
The boundaries of every job are agreed before work starts: who owns what, who touches what, and how it is proved afterwards.
Where the work starts
What the hotel sees, and where our engineers go looking first.
Top-floor and corner rooms don't hold temperature in August.
Roof insulation and solar gain, fan coil coil capacity and filters, and the supply water temperature at the plant.
Lower floors and the podium run warm when occupancy peaks.
Differential pressure at the index circuit, pump head and drive setpoint, and balancing and control valves at the far branches.
The generator didn't pick up the load during the last outage.
Transfer switch, load bank test, fuel system, and which loads actually sit on the essential board.
Civil Defense flagged the fire alarm panel at the last inspection.
Panel age and spares, detector coverage after past refits, and the cause-and-effect matrix.
Showers lose pressure during the breakfast peak.
Booster set sizing and controls, pressure-reducing valves, tank levels and hot water circulation.
Cold taps run warm in summer.
Roof tank exposure and insulation, cold pipework sharing hot ceiling voids and risers, and tank turnover.
Guests report a drain smell in the bathroom.
Dried or siphoned traps, stack venting and air admittance valves, and the shower drain.
The new brand standard adds EV chargers and a bigger kitchen.
Maximum demand against the SEC supply, spare capacity at the main switchboard, and room on the busbar for new ways. If the supply is short, the SEC load-increase application starts first.
Energy and running cost
We start from 12 months of electricity and water bills and benchmark kWh and m³ per occupied room. Each measure is listed with its estimated saving, its basis and its simple payback. Savings are verified to IPMVP (the International Performance Measurement and Verification Protocol): a written M&V plan sets the boundary, option, baseline period and adjustments before work starts, using Option B for plant and Option C for whole-building bills. Results are compared against a baseline adjusted for cooling degree-days and occupied room-nights (ASHRAE Guideline 14).
Life safety comes first, then guest comfort, then efficiency. The order is about priority; efficiency still carries real value.
Typical low endTypical range
Illustrative split for a Riyadh hotel; these are typical ranges, and your own figures come from your 12 months of electricity bills.
| Measure | What it cuts | Basis of the estimate |
|---|---|---|
| Variable-speed pumps and 2-way valves | Pump energy at part load | Logged pump kW and flow |
| Chilled-water reset and chiller sequencing | Compressor energy | Two weeks of chiller-only and whole-plant kW/TR logging |
| EC fan coils | Fan energy in every room | Unit count and run hours from the BMS or sample metering |
| Key-card and occupancy setback | Cooling and lighting in empty rooms | Occupancy from the PMS and sample room logging |
| LED and lighting controls | Lighting energy, and the heat the cooling has to remove | Fitting count and operating hours |
| Heat recovery to hot water | Calorifier load and heat rejected on the roof | Hot-water demand against chiller run hours |
In your plan, each line also carries its estimated kWh and SAR saving per year and its simple payback. No saving is quoted before your bills and logging are in.
Start with a chiller plant energy check
Compare the chiller options
How the engagement works
Live MEP work in an occupied hotel is mostly about planning the shutdowns. These are the steps, and who signs each one.
Plant inspected, maximum demand taken from 12 months of electricity bills and power-quality logging, existing drawings checked against what is really installed.
Reviewed with your chief engineerShop drawings and material submittals for every item before anything is ordered (CT-05). Where fire systems or escape routes change, stamped FLS drawings approved by Civil Defense first (CT-04).
Approved by the owner or the owner's consultant, and by Civil Defense for FLSEach isolation dated, timed and set against occupancy, at branch valves and floor boards wherever the risers allow it. Main board work is done section by section across the bus coupler where the board's form of separation allows it, at night, with a rented generator carrying the essential loads; sprinkler work runs inside a logged impairment window with a fire watch.
Signed by the general manager and chief engineerSpecialists install; our project manager, MEP engineer and HSE/QA lead check against inspection and test plans. Every electrical isolation is locked with a multi-lock hasp: a personal lock for every worker and the hotel's lock added by the authorised engineer, then proved dead (live-dead-live) before work. Nothing is re-energised without the authorised engineer's lock removed and signature on the permit.
Daily permits to work from the hotelWitnessed tests, HVAC testing and balancing (T&B), controls point-to-point and functional tests, flow tests for fire pumps, then handover documents.
Owner's representative, and Civil Defense for FLSChiller, AHU or fan coil replacement as a defined project: survey, design review, phased installation and T&B.
A fixed-fee survey of the fire systems against Civil Defense requirements, then the remedial works as a project if you want us to do them.
What you receive
Approved before the work, recorded during it, handed over at the end. The codes are the ones in our full document register.
CT-05Every item approved before it's ordered. Switchboards to IEC 61439: design verification from the original manufacturer and routine verification of each board, witnessed at the factory. Materials with SASO conformity.
CT-07How each isolation runs and who agreed it, including lock-out/tag-out, isolation certificates and fire-system impairments.
CT-08Hold points, checks and sign-offs per system.
CT-11Witnessed, including the HVAC testing and balancing (T&B) report: airflow and fresh air per room, and supply and return water temperatures on every floor handed back; controls point-to-point and functional test sheets. Where energy was part of the case, the comparison against the adjusted baseline in the M&V plan; for chillers, the first-summer peak test.
CT-12Test records and approved drawings set out for Civil Defense.
CT-15What was installed, where, and how it's isolated.
CT-16Equipment data, schedules and spares lists.
CT-18Each manufacturer's warranty, its start date and its conditions. These are listed separately from our defects period under the contract, which runs from each zone's taking-over certificate.
Our engineers lead; crews we prequalify per discipline install under the permits, with their work checked daily by our engineers, and fire systems are installed only by Civil Defense-licensed contractors. Each one is submitted to you for approval before they start. You deal with one contractor, and CORETECH is liable to you for every subcontractor's work.
It can, with temporary cooling. Our method is to replace one unit at a time between November and March. Where the remaining chillers can carry the load, they do; where they can't, we bring in temporary cooling for each swap, and the survey tells you which before you approve the budget. That means surveying in the summer before, when the plant is at full load, and ordering in time for the winter window. In the first July or August after the swap we come back for a performance test at peak load.
Yes. We review it against site conditions, raise anything that won't fit the existing building, and build to the approved version.
Before work starts, the FLS drawings are stamped by a licensed engineering office and approved by Civil Defense. At the end we prepare the test records and the inspection pack (CT-12), and we attend the inspection with you and the Civil Defense-licensed contractor. Anything raised is closed out and re-tested before handover.
Sometimes. New brand loads such as EV chargers and bigger kitchens can push a hotel past its contracted capacity. The load survey tells you early, and if an application is needed we prepare it so its timeline is in the programme from the start.
Before mobilisation, the cover for the works (contractor's all risks, CAR) is set out against your property policy with your broker, so it is clear which policy covers the new works, the existing building, guests' property and third-party liability. Each specialist's insurance certificates are collected and registered under the works policy. The cover itself is what the signed agreement and the policies say.
Yes, across Saudi Arabia from our Riyadh base. Projects elsewhere in the GCC are considered on request.
Codes we work to
The Saudi regulations and standards behind this service, with what each covers and how we apply it.
Other services
Start with the plant room