HVAC RAMS template

An HVAC RAMS should describe the actual heating, ventilation or air-conditioning job, the equipment and energy sources involved, the people exposed and the safe order of work. A reusable template helps you avoid missing headings; it cannot tell you that a particular unit is isolated, a roof can carry the load, a refrigerant circuit is safe to open or an occupied building can tolerate an air-system shutdown. Those are site and equipment decisions for competent people.

Use the worksheet below for installation, servicing, maintenance or replacement of HVAC equipment in Great Britain. It is most useful before a site visit and then again at the workface, where the contractor fills in the actual plant model, location, access route, drawings, isolation points, materials, permits and hand-back tests. It does not replace design calculations, manufacturer instructions, pressure-system procedures, commissioning sheets, F-gas records, site permits or specialist risk assessments. Northern Ireland has a different regulatory context and is outside this page.

An installer fitting a small split system, a maintenance team replacing an air-handling-unit motor and a contractor working on an evaporative cooling tower need different RAMS. Do not use one completed example for all three. The examples in this guide are prompts, not technical instructions to open, charge or test refrigerant equipment.

First define the job and its limits

Write exactly which asset and part of the system will be worked on, whether the building remains occupied, and who controls it. Identify linked services: electrical supply, water, gas, refrigerant, steam, condensate drainage, controls, fire alarm interfaces and the air distribution system. Specify whether work is on a roof, in a plant room, above a ceiling or in a tenant area. Check who must approve shutdowns and who will tell building users.

Confirm the scope: survey, removal, lifting, installation, pipework, electrical connection, testing, commissioning and return to service are different stages. Name the stages that are not in your contract, so nobody assumes another trade has completed them. A RAMS for mounting equipment does not authorise someone to connect an electrical supply or handle refrigerant. If the work includes asbestos disturbance, confined-space entry, hot work, lifting operations or pressure testing, connect the relevant specialist plans and permits rather than bury those hazards in a generic line.

Check the manufacturer's information and the building's as-built records. An inaccessible isolation valve, an unlabelled cable or a different refrigerant than expected can change the method. Record the stop-and-review decision when site facts contradict the initial plan. HSE advises that risk assessments identify significant hazards and practical controls for the work; a method statement should explain how the safe sequence is delivered to the team.

Choose access and lifting controls before delivery

HVAC components may be bulky and awkward even where the weight seems manageable. Before delivery, verify the vehicle unloading point, floor loading, route through doors and corridors, stairs/lifts, roof access and any crane or hoist position. Keep pedestrians and occupants out of the movement route when needed. Where mechanical lifting is used, a competent person should plan it with suitable equipment and support conditions; the RAMS should reference the lifting plan and inspection evidence instead of inventing sling angles or load limits. HSE's lifting guidance highlights planning, supervision and proximity to structures, trenches and overhead services.

For roof plant, assess edge protection, fragile areas, weather and rescue. For ceiling voids or high ductwork, choose a safe access platform for the duration and task. HSE work-at-height guidance prioritises avoiding height where practicable, then preventing falls and planning rescue. A ladder is not the default access solution for prolonged two-handed installation simply because it is available.

Manual handling still matters: filters, duct sections, copper coils, motors and cylinders can cause injury when carried along awkward routes. The plan should state handling aids, team coordination, storage and how components are restrained before fasteners or supports are released. Never assume an existing support frame will carry a new unit without competent confirmation.

Control energy, refrigerant and process hazards

Before opening equipment, identify every energy source and who controls each isolation. A local switch that stops a fan may not isolate the supply; remote controls or automatic restart can re-energise plant. Electrical work needs competent isolation and verification under the site's procedure. Hot-water or chilled-water lines may remain under pressure or at harmful temperature. Record who will drain, depressurise and reinstate them. Do not begin because a display reads “off”.

Refrigerants bring additional legal and physical hazards. GOV.UK's current F-gas qualification guidance says individuals need the appropriate qualification for the activity and system. The GB F-gas collection also flags company certification, leak checks, records and recovery requirements where applicable. Do not state that every HVAC worker needs the same certificate: determine whether the task involves F-gas equipment and which operation is being done. Confirm the refrigerant type, quantity, safety data, ventilation, recovery/containment method, tools and competent personnel before any circuit work. Some systems use other refrigerants with different flammability or asphyxiation risks; the risk assessment must match the actual material and equipment.

Pressure testing and commissioning can expose people to stored energy. Reference the engineering procedure, test medium, pressure limits, exclusion and sign-off set by competent designers/manufacturers; a blog template should not prescribe a universal value. Manage cylinders against toppling and uncontrolled release. Keep ignition sources away where the assessed atmosphere could be flammable. If a leak or unexpected odour/alarms occur, stop, isolate access and follow the site's emergency plan rather than improvising repair in an occupied area.

For duct cleaning or insulation work, consider dust, fibres and existing building materials. Where the building could contain asbestos, obtain reliable building information before disturbing fabric, and stop if suspect material is found. For brazing or soldering, use the site's hot-work assessment and permit arrangements, fire precautions and post-work checks where needed. The related hot-work risk assessment template at /templates/hot-works-risk-assessment-template is a separate task, pending route approval; it does not authorise HVAC work on its own.

Water systems and occupied-building interfaces

An air-conditioning system is not automatically a legionella risk. Evaporative cooling towers and condensers are a particular concern because water can aerosolise; other water systems also need assessment where conditions allow exposure. HSE's evaporative-cooling guidance calls for measures to prevent or control legionella risk, and its duty guidance explains cooling-tower notification where applicable. Do not paste cooling-tower controls onto every dry split AC installation. Instead identify the system type, water treatment responsibility, shutdown/cleaning plan and responsible person if the job touches a relevant water system.

Occupied buildings add air quality and continuity questions. Is the system serving a healthcare space, restaurant, office or residential block? Could isolating an air-handling unit affect smoke control or temperature-sensitive equipment? Agree shutdown windows, temporary arrangements and communication with the building operator. Dust from drilling or duct opening may spread through occupied areas; use containment and cleaning matched to the task. Clearly mark who restores filters, access panels, fire dampers or controls, and what is tested before handing back.

Blank HVAC RAMS worksheet

Fill this for the actual asset and work. “Not applicable” needs a reason. A blank evidence or verification box means the step is open.

Pre-start verification: site walk completed ____; plant and service information checked ____; lift/access plan accepted ____; isolations agreed ____; permits active ____; team briefed ____; building operator informed ____. Completion: tests recorded ____; temporary controls removed or handed over ____; equipment/area status accepted by ____ at ____; defects/open actions ____.

A method sequence that people can use

Convert the risk table into a method in plain language. A suitable outline is: confirm work scope and plant identification; consult the controller and review drawings; survey the route and workface; set barriers and access; inspect lifting arrangements; identify and apply each isolation; verify the condition required for safe work; remove/fit equipment in the planned sequence; perform specialist refrigerant, electrical or water work only by authorised people; test and commission to the approved procedure; account for tools and temporary materials; reinstate services with the building controller; brief the operator on outstanding restrictions; close linked permits; hand over records. Replace this outline with the actual technical steps and hold points for the installation.

For example, a team replacing a rooftop condenser may discover that the quoted delivery route passes a fragile rooflight. The original RAMS is no longer valid simply because the plant model is unchanged. Stop the delivery; redesign the route and access; update the lift and exclusion arrangements; brief the team and building operator; then continue only when the changed plan is approved. The same rule applies if the refrigerant label differs from the order, a valve cannot isolate a circuit, or an occupied area cannot tolerate the proposed shutdown.

Review after any design, plant, access, weather or occupancy change, incident or near miss. A competent supervisor should make sure the current document reaches the people doing the job. Keep specialist certificates, inspection records and commissioning outputs as supporting evidence; they do not by themselves demonstrate that every site hazard was assessed.

Where the related Complys pages fit

The live HVAC product page targets business compliance management and states that a RAMS builder is available. This worksheet targets the different search task of preparing a specific installation/maintenance RAMS. Link to the general /rams pillar and verified risk-assessment/RAMS money page for the commercial next step. Do not claim that Complys automatically validates F-gas qualifications, refrigerant safety, lifting design, isolation or legionella controls. A product may organise documents; the responsible people must verify the physical job. Before publication, check the deployed builder's HVAC workflow, output, editing/export and commercial access rather than relying on marketing copy.

Source and claim register (writer-side; checked 5 October 2026)