Support & Maintenance

At PM Technical Services, our Support & Maintenance services are engineered to deliver long-term reliability, operational efficiency, and stringent regulatory compliance for your building's water, HVAC, and mechanical systems. We offer a fully integrated approach combining proactive prevention, precise engineering interventions, and rapid reactive support across water hygiene, legionella control, HVAC systems, mechanical installations, plumbing, and general fabric maintenance.

Our programmes are meticulously designed to minimise system downtime, eliminate legionella and microbiological risks, optimise energy performance, and prolong asset life - fully aligned with UK standards such as ACoP L8, HSG274 Parts 1-3, HTM 04-01, and BS EN 806. Led by our directors, who collectively bring over 20 years of hands-on engineering experience - from on-site critical water analysis to full project lifecycle management - we provide technically robust solutions that integrate water treatment with broader building services engineering.

Serving commercial, industrial, healthcare, and residential sectors, our mobile, multidisciplinary teams ensure seamless service delivery with minimal disruption to your operations.

In-Depth Engineering Features of Our Support & Maintenance Services

Proactive Maintenance Programmes

Engineered scheduled regimes include comprehensive monitoring and optimisation:

On-site and laboratory water sampling with detailed microbiological and chemical analysis (e.g., TVC, legionella, pseudomonas).
Temperature profiling, flow rate verification, and system balancing to maintain optimal hydraulic performance.
Chemical dosing calibration and performance tuning for evaporative cooling towers, closed circuits, boilers, chillers, AHUs, FCUs, and ventilation systems.

Legionella water sampling and testing using specialised kits for rapid, accurate detection.

Reactive and Emergency Support

24/7 mobile response for critical faults: pump failures, valve malfunctions, leaks, or contamination events. Engineering interventions include dead leg removal (pipework reconfiguration to eliminate stagnation zones), TMV fail-safe testing and recalibration, showerhead descaling/disinfecion, and emergency chlorination.

Compliance and Risk Management

Full-spectrum health & safety engineering: bespoke Risk Assessments and Method Statements (RAMS), COSHH evaluations, confined space entry protocols (with escape sets), and working-at-height safeguards. We implement and audit Written Schemes of Control, maintain digital/physical logbooks, and conduct independent site audits to ensure ongoing compliance.

Specialised Water Hygiene Maintenance

Evaporative Cooling Systems

In-depth chemical analysis, biocide dosing optimisation, full clean and chlorination, acid descaling for heat transfer efficiency, and structural refurbishment - including replacement of infill packs (for enhanced water-air contact), drift eliminators (to minimise water loss and aerosol release), spray nozzles, strainers, and pumps.

Installation/maintenance of advanced dosing systems (pumps, controllers, probes, flow switches, actuators).

Closed Systems

Dynamic flushing to BSRIA guidelines, installation of sidestream filtration units and coupon racks for corrosion monitoring, automatic dosing pump integration, and inhibitor level optimisation.

Domestic Systems

CWST inspections, mechanical cleaning, disinfection, and remedial installations; calorifier internal inspections and descaling; UV lamp replacement and intensity validation; RO membrane/filter changes; chlorine dioxide level verification; and plumbing modifications.

HVAC and Mechanical Maintenance

Detailed servicing of AHUs/FCUs (coil cleaning, fan/motor alignment, belt tensioning), boiler/chiller efficiency checks, ventilation duct fogging/disinfecion, filter media replacement, and system rebalancing for airflow and energy optimisation.

General Building Fabric Support

Mechanical and plumbing engineering: pipework rerouting, cable basket installations, pump upgrades, and fabric repairs integrated with system hydraulics.

Monitoring and Reporting

Advanced trend analysis from on-site testing, corrosion rate monitoring via coupons, and engineered recommendations for system upgrades - delivered through comprehensive digital reports.

Why Choose PM Technical Services for Support & Maintenance?

Director-Led Technical Depth: Over 20 years of combined progressive engineering expertise ensures precise, practical solutions.
Integrated Multidisciplinary Delivery: Seamless combination of water, HVAC, and mechanical engineering for holistic building performance.
Proven Risk Mitigation and Efficiency Gains: Sustainable practices that lower energy costs, extend equipment life, and provide audit-ready compliance.
Client Partnership: Tailored programmes with proactive communication and rapid response.

Contact us for a detailed site survey or engineering consultation. Trust PM Technical Services to engineer the reliability your systems demand.