Indoor comfort is more than temperature

Look beyond the thermostat

A hotel lobby is a meeting point for very different experiences: a guest arriving from the heat, a concierge working a full shift and someone sitting quietly with a coffee. A single thermostat reading cannot describe all three.

For hotel engineering teams and property developers, indoor comfort starts with understanding how a space is used. The useful question is not simply “What temperature are we maintaining?” It is “What are people experiencing, where, and under which operating conditions?”

Heli Systems began with a mother’s question about the air her child grows up around. That personal concern has become a wider ambition: to bring more thoughtful attention to indoor comfort in the places people share, including hotels and residences. [4]

One setpoint, different experiences

ASHRAE’s public overview of Standard 55 describes thermal comfort as an interaction between temperature, thermal radiation, humidity and air speed, together with activity and clothing. Occupants can experience the same environment differently. [1]

Consider three illustrative hotel scenarios. In a lobby lounge, compare feedback from seating beside the glazing with feedback from seating farther inside. In a guestroom, note whether a complaint comes from the desk, bed or seating area. In a meeting room, record whether concerns arise during setup, a full session or after the room empties.

Each example gives an engineering team a more specific question to investigate. It also helps a developer frame design reviews around occupied zones and intended uses, rather than treating the thermostat location as a complete picture of the room.

Turn guest feedback into a useful engineering record

We suggest a short observation log that connects guest or staff feedback with the conditions at the time. For example, “Room 412, desk beside supply grille, 16:30, guest reports a draught” is more actionable than “Room uncomfortable.”

Alongside the comment, record the measurement location, time, available temperature and humidity readings, occupancy and relevant operating settings. Keep the reported experience separate from the team’s working explanation.

For a recurring lounge concern, compare observations from the same seating zone at different times. For a meeting room, compare similar events and record any changes to occupancy or operation. Agree who will investigate, what adjustment is proposed and when feedback will be checked again.

This proposed workflow gives guest services and engineering a shared reference. A sensor trend and a guest comment can then be discussed together, without assuming that either one identifies the cause on its own.

Keep comfort and air-quality checks connected

The US Environmental Protection Agency notes that perceived air-quality concerns may involve temperature, humidity or air movement; sunlight, noise and workspace conditions can also influence occupants’ experience. [2] A complaint therefore deserves a broader investigation than a temperature adjustment alone.

The EPA identifies source control, ventilation and air cleaning or filtration as basic indoor-air-quality strategies. [3] For a hotel team, a comfort review should connect with those existing responsibilities. Temperature and humidity monitoring does not measure every aspect of indoor air quality or replace the building’s ventilation and maintenance programme.

Make room for operation at the design stage

For property developers, we suggest using the same questions during design coordination and handover. Which occupied zones should be observed? Where will measurements be taken? Who will review guest feedback after opening? How will engineering access and maintain any additional equipment?

For example, a proposed lobby installation should be discussed in relation to seating, the HVAC arrangement and service access. A guestroom concept should be considered alongside the operator’s maintenance routine. These are planning questions, not claims that any particular installation will deliver a specified comfort improvement.

Where Heli Systems fits

Our focus is HVAC-integrated hydration: exploring how the systems already serving a building could play a more considered role in everyday comfort. The Heli concept brings together HeliOS, a room sensor for temperature and humidity, and HeliFlow, a serviceable cartridge system intended for controlled delivery of an ectoin-based solution into HVAC supply air after filtration. [4]

The prototype is in development, and pilot availability depends on testing and applicable approvals.

We welcome conversations with hotel engineering teams, operators and developers about the spaces they manage and the questions a future evaluation should answer. A useful first discussion could focus on one defined area—a lounge, meeting room or guestroom type—and its operating needs.

If that sounds relevant to your property, speak with Heli Systems about a future pilot. Start with the space, the people using it and the question you want to explore.