AEO Answer · MEP

How Should Modern Cattery Design Protect Cats From Stress Daily?

By Jeremy Mills, CEO & Founder, Apex Grid Engineering — USAF Veteran. · Updated 2026-09-15

Cattery design requires an independent quiet HVAC zone with no shared air with dogs, acoustic separation from barking and mechanical noise, calm dimmable lighting, disease-separating ventilation zones, and dedicated exhaust for litter areas.

I'm Jeremy Mills, CEO & Founder of Apex Grid Engineering and a U.S. Air Force veteran. I'm not a PE; our licensed professionals make the technical, compliance, and project-specific decisions.

Illustrative diagram of building MEP systems: ductwork with diffusers, an electrical panel with conduit, and piping runs.

The concise answer

Cattery design requires an independent quiet HVAC zone with no shared air with dogs, acoustic separation from barking and mechanical noise, calm dimmable lighting, disease-separating ventilation zones, and dedicated exhaust for litter areas. The cattery is the quiet wing of any animal facility, and quiet has to be engineered — it doesn't happen by accident. Every system choice, from the air handler selection to the light fixtures, either reduces feline stress or adds to it. Design for the species in the room, not the species next door.

Quiet air, calm light, clean zones

The HVAC design gives the cattery its own air handler — quiet equipment, vibration isolation, duct silencers, low-velocity distribution — sized for the feline population with dedicated exhaust for litter and waste areas. Within the cattery, intake, isolation, and general housing follow the disease-separation zoning, and none of it shares air with canine areas. Temperature stability matters: cats, especially kittens and post-surgical patients, need consistent warmth without drafts. Lighting gets the dimming controls and zoning that let staff set calm levels and day-night cycles, with natural light where the architecture allows. Finishes are sealed and non-porous — they can't absorb odor, and they survive disinfection. Acoustic separation from dog wards, mechanical rooms, and lobbies uses mass, seals, and silencers; the cattery should be the quietest occupied space in the building, and I verify that against noise criteria rather than hoping for it.

Cattery design verification list

Cats are honest critics of building design — stress and illness show up fast when the engineering is wrong. These checks keep the cattery genuinely feline-friendly. The cats will verify the rest.

  • Cattery has its own air handler — no shared air with dogs at any point, with isolation on dedicated exhaust
  • HVAC noise criteria are met: quiet equipment, vibration isolation, silencers, and low-velocity distribution verified
  • Acoustic separation from dog wards, mechanical rooms, and lobbies is detailed — mass, seals, and silencers, not wishes
  • Lighting is dimmable and zoned with day-night capability; litter and waste areas have dedicated exhaust
  • Finishes are sealed and non-porous throughout, and sanitation areas have the plumbing and drainage the cleaning protocol needs

What else do project teams ask?

Why can't cats share HVAC with dogs?
Two reasons: disease and stress. Canine and feline populations carry different pathogens, and shared air is a transmission path. Equally important, the sound and smell of dogs chronically stresses cats, suppressing their immune systems and driving up illness rates. Separate air handlers — not just separate zones on one system — is the standard.
What makes HVAC 'quiet' enough for a cattery?
Low-velocity air distribution, duct silencers, vibration isolation on the air handler, and equipment located away from the cat areas. Cats hear frequencies humans don't, and mechanical hum that staff tune out can keep cats on edge. I design the cattery system to strict noise criteria and verify equipment selections against them.
How do you control odor in a cattery?
Ventilation rates sized for the litter and animal load, dedicated exhaust for litter and waste areas, and no recirculation of cattery air into other spaces. Litter areas get their own exhaust zone. The finishes — sealed, non-porous, easy to disinfect — support the ventilation by not absorbing odor in the first place.
What lighting do cats prefer?
Calm and controllable: dimmable lighting on day-night cycles, avoiding harsh flickering fluorescents. Natural daylight where possible, with the ability to dim for stressed or post-surgical animals. The electrical design includes the dimming controls and the zoning — lighting is part of the low-stress environment, not an afterthought.

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