Dignity. Technology. Sustainability. — Redefining the Afterlife Industry.
Dignity. Technology. Sustainability. — Redefining the Afterlife Industry.
Interior Air Safety & Purification
Air Quality Upgrade Programme
Airborne outbreaks revealed how many public buildings run their ventilation systems at minimum. This programme reconfigures an existing system so it can be switched into a high-ventilation, low-recirculation mode on demand — instead of being rebuilt under pressure.
Retrofit programmeType
One-click modeTrigger
Existing systemsScope
01 What it solves
In most public buildings the outdoor-air share of ventilation is modest. Fan-coil plus outdoor-air systems frequently run with the outdoor-air unit off or running briefly; constant-volume air-handling units typically sit around 30% outdoor air; variable-air-volume systems reach 50–60%. Even where outdoor-air standards have been raised, meeting them depends on how the building is actually run.
At the same time the systems are rarely cleaned and disinfected at the frequency national standards call for. When an airborne outbreak arrives, the building has to be reconfigured under pressure — which is the worst possible moment to be designing control logic.
The requirement therefore has two parts: the system has to be capable of high-ventilation operation, and it has to be able to switch into it immediately, without an engineer rewriting the controls.
02 What the solution includes
Public-health emergency mode
A global switch added to the intelligent building control system: logic is modified in the DDC controllers, a global variable is added at the supervisory level, and a menu key lets the operator enable or disable the mode in one click.
Outdoor-air enforcement
Outdoor-air units forced on, with outdoor air drawn directly from outside — never from plant rooms, corridors or ceiling voids — and the intake area kept clean.
All-outdoor-air operation
Air-handling units run on 100% outdoor air with the outdoor-air and exhaust dampers fully open and the return-air damper closed.
Control decoupling
Window magnetic contacts decoupled from the air-conditioning system so opening a window no longer overrides the ventilation strategy.
Low-speed delivery
Where the supply fan is variable-speed, its frequency is reduced so high outdoor-air volumes do not arrive as an uncomfortable cold draught.
Terminal network control
Fan-coil units brought onto the network so all terminal devices can be started, stopped and adjusted remotely — which is what makes unified monitoring possible in emergency mode.
Filtration upgrade
Filter grade raised to F7 or better, or high-voltage electrostatic precipitation added where a low-resistance, high-efficiency solution is preferred.
Cleaning regime
A defined schedule: the whole system cleaned and disinfected at least monthly, filters, grilles and terminal units at least weekly.
03 How it works
The programme is delivered as a set of operating-strategy changes to an existing system, plus the physical changes those strategies require.
- Establish the current stateHow the system is configured, how it is actually operated, and what outdoor-air share it can reach.
- Add the emergency modeRework the control logic, add the global variable and expose the mode as a single operator-facing switch.
- Change the air strategyForce outdoor-air units on, run air-handling units on full outdoor air, close return dampers, decouple window contacts, reduce fan frequency where needed.
- Bring terminals onto the networkConnect fan-coil units and resolve cross-zone supply boxes so each zone is served only by its own terminals.
- Upgrade filtrationF7 or better filters, or electrostatic precipitation, sized to the unit's resistance allowance.
- Set the disinfection regimeMonthly whole-system cleaning and disinfection, weekly terminal and filter cleaning, with the correct chlorine or chlorine-dioxide concentrations and contact times.
- Verify and documentBalanced airflows and a written operating procedure for switching the mode on and off.
Highest priority for funeral homes
These buildings combine high occupancy, contaminated air and elderly visitors. They are the buildings where a high-outdoor-air strategy pays back fastest.
04 Technical basis
The measures follow national ventilation and air-conditioning practice and the standards already referenced by the company's purification work.
| Standard / policy | Subject |
|---|---|
| GB 50019-2016 | Design code for heating, ventilation and air conditioning |
| GB 50243-2016 | Acceptance of ventilation and air-conditioning works |
| GB 19053-2003 | Safety limits for pathogenic bacteria in funeral premises |
| GB 50189-2015 | Energy-efficiency design for public buildings |
| MCA 2018 action plan | "Internet plus funeral service" — online services and remote interaction |
| GB 50016-2019 | Fire protection design for buildings |
05 Where it applies
The programme is written for existing buildings rather than new ones, and for the rooms where people and contaminated air coexist.
Memorial hallsFarewell hallsBusiness & reception areasOfficesMortuariesCremation hallsAnatomy and pathology roomsStaff and public circulation
06 Selected references
Deployment baseProducts in use across 500+ funeral homes nationwide
Purification track recordAir-purified clean rooms delivered since 2017 across provincial, municipal and county funeral homes
Verified performanceProject acceptance testing reported against national standards
The 500+ figure refers to funeral homes using the company's products. Specific ventilation retrofit references are available on request.
08 Questions buyers ask
Is the emergency mode a physical change or a software one?
Primarily a control change. The logic is modified in the DDC controllers and a global variable plus a menu key are added at the supervisory level, so the operator enables the mode with one click. Physical changes are limited to what the strategy needs — damper behaviour, filter grade, fan network.
Will running on 100% outdoor air be very expensive?
It costs more than recirculating, and it is a temporary mode rather than the permanent setting. For funeral homes with high occupancy and elderly visitors, the programme treats that cost as justified when the mode is active.
Can you take on a building where we do not have the original control system documentation?
Usually yes. The first stage is establishing how the system is actually configured and operated, which is a survey task rather than a documentation task. Where a controller cannot be reprogrammed, we will say so and propose an alternative.
How often should filters and terminals really be cleaned?
At least weekly for filters, grilles and terminals, and at least monthly for the whole system, using the appropriate chlorine or chlorine-dioxide concentration and contact time.
Where to go next
Scope this solution for your project.
Send the site, the zones and the stage you are at. We reply with what we would deliver, which interfaces we would own and the standards we would build to.