Commercial Mechanical Services in Surrey and London
WTS Plumbing & Heating Ltd is a family run mechanical services contractor based at Jayes Park Courtyard in Ockley, about seven miles south of Dorking on the A29. From that base we install heating, cooling, ventilation and pipework for new build, refurbishment and fit-out projects across Surrey and London. Our own engineers lead every job, with specialist subcontractors brought in where the scope calls for it. WTS has traded since 2008 and now works as the mechanical contractor for main contractors, fit-out companies and building owners. Recent projects include Moonbug at Camden Lock, Kew Gardens, Cabot Square, Cannon Street, Voysey House and Level 9 of Moor House.
Full Mechanical Installations for Every Building Type
We install complete mechanical packages in offices, schools and colleges, shops, clinics and light industrial units. That covers closed-loop low temperature hot water (LTHW) heating, chilled water, air conditioning, mechanical ventilation (HVAC) and the Building Energy Management System (BEMS) that ties them together. In Surrey that might be an office refurbishment in Dorking (RH4 and RH5), Reigate (RH2) or Leatherhead (KT22), a new plant room on a business park around Epsom (KT17, KT18 and KT19) or Banstead (SM7), or a heating replacement in Ashtead (KT21), Cheam (SM2 and SM3) or Cranleigh (GU6). In London it is more often a Category A or Category B fit-out inside an existing building. We price from a consultant's drawings and specification, or design the system ourselves through our design and modelling service when the client prefers a design and build route.
Heating, Cooling and Ventilation Systems
On the heating side we install commercial boilers, air source heat pumps, plate heat exchangers, LTHW distribution, radiators, trench heating and underfloor heating. For cooling we fit chillers, chilled water circuits, fan coil units and VRF and split air conditioning, with our F-Gas registration covering the refrigerant work. Ventilation ranges from a single extract fan to full air handling units, ductwork and heat recovery. Each system is sized from the building's heat loss and cooling load rather than a rule of thumb, so plant is not oversized and running costs stay down. We are Gas Safe registered, MCS certified for heat pumps and, because WTS holds OFTEC registration, we work on oil and LPG heating as well as mains gas where a rural Surrey site has no gas main.
Integration with Base-Build Systems
Much of our London fit-out work is connecting a new floor or tenancy onto the landlord's base-build services. That means tapping into chilled water and LTHW risers at the landlord's valves, extending condensate and drainage, and setting the new fan coil units and controls to talk to the building's BEMS. We agree isolation, permits to work and out-of-hours shutdowns with the building manager in advance so the rest of the building carries on as normal. New pipework is pressure tested, flushed and chemically cleaned to BSRIA guidance before it is opened to the landlord's system. Level 9 of Moor House is one example: a single floor inside a much larger building.
Low Carbon Heating and Cooling for Commercial Buildings
Most refurbishment briefs we see now ask for lower energy use and a better EPC rating, and mechanical services are where most of that saving is found. We replace old atmospheric boilers with condensing boilers or air source heat pumps, add heat recovery to ventilation so warmth is not thrown out with the extract air, and fit variable speed pumps and fans that slow down when the building does not need full output. Good controls matter as much as good plant, so we set up BEMS time schedules, weather compensation and optimum start rather than leaving everything on constant. At Kew Gardens and at Moonbug the building management system was part of our scope, alongside the pipework. Our sustainability service covers the surveys and options appraisals that come before a decision like this.
Plant Room Design and Installation
We build new plant rooms and strip out and refit old ones. A typical scope is boilers or heat pumps, chillers, buffer vessels, pumps, pressurisation units, plate heat exchangers, LTHW and chilled water headers, valves, flues and the BEMS panel. Pipework is fabricated by our own engineers and insulated and labelled once tested. We lay the room out so that every valve, strainer and pump can be reached for maintenance without dismantling something else, because a plant room that is awkward to service ends up neglected. Where the building is occupied we sequence the work so the old plant keeps running until the new plant is ready, then change over on an agreed date, often over a weekend.
Quality, Safety and Compliance
All of our mechanical installations are carried out to the relevant British Standards and to CIBSE and BSRIA guidance. WTS is SafeContractor Approved, Gas Safe registered, F-Gas registered, MCS certified and a NICEIC Approved Contractor, so the electrical connections to plant are done in house rather than left to another trade and we can deliver the mechanical and electrical (M&E) package together. Ask us for our Gas Safe registration number and check it on the Gas Safe Register before work starts. Every job runs on risk assessments and method statements, with pressure test certificates, flushing records and commissioning sheets collected as we go and handed over with the operation and maintenance manuals. Parts and workmanship carry a 12-month warranty.
Our Commercial Mechanical Services Include:
- LTHW and chilled water system design and installation
- Air conditioning, VRF and mechanical ventilation systems
- Building Energy Management Systems (BEMS) and controls
- Plant room design, replacement and commissioning
- Tie-ins to existing base-build and landlord services
- Pipework fabrication, insulation and distribution
- Air source heat pumps and heat recovery ventilation
- Planned and reactive mechanical maintenance
Working with Main Contractors, Consultants and Building Owners
We work for main contractors and fit-out companies, and directly for building owners, managing agents and facilities managers. We attend design and site meetings, issue our own drawings through the design and modelling service, keep to the programme and hand over with a commissioning and validation report the consultant can sign off. From the Ockley office our engineers reach Dorking, Reigate, Leatherhead, Ashtead, Epsom, Banstead, Cheam and Cranleigh by road as part of our regular Surrey round, and we also take on London projects in Wimbledon (SW19), Putney (SW15), Fulham (SW6) and Central London on request, subject to engineer availability. After handover the same team is available for planned maintenance and reactive call-outs, so the engineer who commissioned the plant is the one who comes back to service it.
Call WTS Plumbing & Heating Ltd on 01306 621 057, or 02080 874 309 for London projects, or email info@wtsmechanical.co.uk to discuss the mechanical services package for your next project in Surrey or London.
Commercial services by town
Alongside full mechanical installations, WTS runs commercial boiler installation, boiler repair, boiler servicing and commercial plumbing services town by town from the Ockley office. The pages below cover Dorking, Reigate, Epsom, Banstead and Cheam in Surrey, plus Putney for London clients. Each one explains what we do for offices, shops, landlords and managing agents in that town and how to book a site visit.
DorkingCommercial boiler installation in DorkingCommercial boiler repairs in DorkingCommercial boiler servicing in DorkingCommercial plumbers in Dorking
ReigateCommercial plumbers in Reigate
EpsomCommercial boiler installation in EpsomCommercial boiler repairs in EpsomCommercial boiler servicing in EpsomCommercial plumbers in Epsom
BansteadCommercial boiler installation in BansteadCommercial boiler repairs in BansteadCommercial boiler servicing in BansteadCommercial plumbers in Banstead
CheamCommercial boiler installation in CheamCommercial boiler repairs in CheamCommercial boiler servicing in CheamCommercial plumbers in Cheam
PutneyCommercial boiler installation in PutneyCommercial boiler repairs in PutneyCommercial boiler servicing in Putney
Questions we are asked about mechanical services
Mechanical services are the heating, cooling, ventilation, pipework and controls in a commercial building. On a typical WTS project that means LTHW heating, chilled water, air conditioning, ductwork and the BEMS that runs them, installed as one package by our engineers. Public health services, meaning hot and cold water, drainage and rainwater, are usually part of the same contract and covered on their own page.
Yes. WTS can price from a consultant's drawings and specification, or design the system in house through our design and modelling service and then install it. Design and build suits fit-outs and refurbishments where the client wants one contractor responsible for the whole mechanical package. Either way we issue our own installation drawings and hand over with commissioning records.
Surrey first, from our office at Jayes Park Courtyard in Ockley, about seven miles south of Dorking. Regular commercial work takes us to Dorking, Reigate, Leatherhead, Ashtead, Epsom, Banstead, Cheam and Cranleigh. We also work regularly in London, with projects at Camden Lock, Kew Gardens, Cabot Square, Cannon Street, Voysey House and Moor House, and we take on work in Wimbledon, Putney and Fulham on request.
Yes, this is routine fit-out work for WTS. New fan coil units, pipework and controls are connected onto the landlord's chilled water and LTHW risers at the landlord's valves. Shutdowns, isolations and permits to work are agreed with the building manager beforehand, usually out of hours, and new pipework is pressure tested and flushed before it joins the base-build system so other tenants are not disturbed.
WTS is Gas Safe registered, F-Gas registered for refrigerant work on air conditioning, MCS certified for heat pumps, OFTEC registered and a NICEIC Approved Contractor, and the company is SafeContractor Approved. Ask us for our Gas Safe registration number and check it on the Gas Safe Register before work starts.
Yes. Parts and workmanship carry a 12-month warranty, and the engineers who installed the system can stay on for planned maintenance and reactive call-outs after handover. That covers boiler and heat pump servicing, air conditioning maintenance under F-Gas rules, pump and pressurisation checks and BEMS adjustments as the building settles into use. Planned visits are agreed around the building's own operating pattern.