No photography of this property is on the record yet. We would rather show you nothing than a picture of somewhere else.
Each pathway scores 0 to 3 on the quality of the evidence published, not on the quality of the property. Open a row for every claim and its source.
Air Quality2Specified, 2 of 3.
Specified2 of 3 · Filtration, ventilation and what the air is measured at.
- Specified
Trade press reporting on the retrofit states that incoming ventilation air is filtered by MERV 13 rated filters. The filter grade is named, no filter change interval, airflow rate or particulate reading is published.
The incoming ventilation air is filtered by high-efficiency MERV-13-rated filters which reduces the quantity of airborne pollutants.
PublishedArchitectural Products, Making Passive House History at Hotel Marcel. Checked 2026-08-14. Archived copy from 2026-08-15. - Specified
The same article names the energy recovery ventilator manufacturer as Swegon and describes the unit transferring heat and moisture between exhaust and incoming outdoor air. No model, ventilation rate or recovery efficiency figure is published.
For the Swegon Energy Recovery Ventilators, the system exchanges both heat and moisture energy between the outgoing exhaust air streams with the incoming outdoor air.
PublishedArchitectural Products, Making Passive House History at Hotel Marcel. Checked 2026-08-14. Archived copy from 2026-08-15. - Specified
Variable air volume boxes meter ventilation air per zone and carbon dioxide levels are monitored to reduce airflow when occupancy is low. Carbon dioxide is named as a control input and no measured concentration is published.
Another energy-saving feature is Variable Air Volume (VAV) boxes which meter the amount of ventilation air provided to and extracted from each individual ventilation zone.
PublishedArchitectural Products, Making Passive House History at Hotel Marcel. Checked 2026-08-14. Archived copy from 2026-08-15. - Specified
The kitchen hoods are described as using a four stage filtration process including a high efficiency filter and carbon charcoal filter pack. No filter grade or capture efficiency is published.
The hoods utilize a self-contained 4-stage filtration process to reduce emissions which includes a high-efficiency filter/carbon-charcoal filter pack.
PublishedArchitectural Products, Making Passive House History at Hotel Marcel. Checked 2026-08-14. Archived copy from 2026-08-15. - Specified
The equipment manufacturer's case study names the air source variable refrigerant flow system and the energy recovery ventilators as the heating, cooling and ventilation equipment. No airflow rate or filtration figure appears in the case study.
A CITY MULTI® air-source Variable Refrigerant Flow (VRF) system from METUS complemented by energy recovery ventilators (ERV), was selected for the hotel's heating, cooling and ventilation requirements.
PublishedMitsubishi Electric Trane HVAC US, Hotel Marcel case study. Checked 2026-08-14. Archived copy from 2026-08-15. - Claimed
The hotel states that it operates without fossil fuels, that the kitchen uses induction cooking and that banquet service uses induction equipment with no sterno fuel. The statements sit under sustainability and are framed as carbon measures, and no combustion appliance inventory or air reading accompanies them.
Induction cooking to avoid any need for fossil fuels
PublishedHotel Marcel, Sustainability. Checked 2026-08-14. Archived copy from 2026-08-15.
What would move this score
- What filter grade is fitted to guest room air handling, for example MERV 13 or HEPA H13?
- What is the fresh air supply rate per person in a guest room?
- Are carbon dioxide, particulate or volatile organic compound levels measured, and are the readings published?
- Is there a mould inspection and remediation protocol, and when was it last run?
- Are there gas cooktops, fireplaces or other combustion sources inside guest rooms?
Water Integrity1Claimed, 1 of 3.
Claimed1 of 3 · Source, treatment, tested panels and how drinking water arrives.
- Claimed
A travel publication's account of a stay mentions touch free water stations in the lobby. No water source, treatment train, filtration specification, laboratory panel or dispenser brand is published.
The lobby served as her picture-posing playground, where she hunted for shapes, like the triangles in the restaurant's funkily-shaped glasses, while I hunted for its earth-first touches, from touch-free water stations to a plaque certifying the zero-emission hotel as one of the nation's first LEED Platinum certified hotels, on its way to be net zero by the end of this year.
PublishedHotels Above Par, Hotel Marcel in New Haven: America's Eco-Conscious Brutalist Hotel. Checked 2026-08-14.
What would move this score
- What is the water source, and what treatment is applied before it reaches a guest room?
- Is there a published contaminant test panel, and which laboratory ran it?
- Is shower and bath water filtered, and to what specification?
- How are pools and spas sanitised, and is the chemistry published?
- How is drinking water delivered, and is it treated on site?
Light Rhythm2Specified, 2 of 3.
Specified2 of 3 · Circadian lighting specification, flicker, blackout and daylight.
- Specified
The room features list states that each room has motorised sheer and blackout window shades controlled from a touch panel and a bedside remote. Blackout provision and its control method are specified, no fabric, opacity rating or supplier is named.
Touch panel and bedside remote control of art and vestibule lights and motorized sheer and black-out window shades
PublishedHotel Marcel, Rooms. Checked 2026-08-14. Archived copy from 2026-08-15. - Claimed
The hotel names a Power over Ethernet direct current low voltage system as the power and control layer for all lighting and shades. It is published under renewable energy beside a lighting energy saving figure, and it names no colour temperature, tunability, dimming range or flicker performance, so it describes an electrical topology rather than anything about what the light does. Recorded at the tier that carries no specification.
Power-over-Ethernet (POE) DC low voltage system provides power and control of all lighting and shades in the hotel
PublishedHotel Marcel, Sustainability. Checked 2026-08-14. Archived copy from 2026-08-15. - Specified
The room features list gives the guest room glazing as triple pane windows five feet high with hardwood surrounds by Stickley. The height of the glazed opening is published, no glazing manufacturer, visible light transmittance or daylight factor is published.
Triple-pane energy-efficient sound insulated 5 foot-high windows with Stickley hardwood window surrounds
PublishedHotel Marcel, Rooms. Checked 2026-08-14. Archived copy from 2026-08-15. - Claimed
A travel publication reports that interior facing guest rooms receive daylight from the building's central light well. No daylight measurement or glazing area is published.
All of the hotel's guest rooms have natural lighting thanks to the interior rooms facing the hotel's central lightwell
PublishedMatador Network, New Haven's All-Electric Hotel Is Raising the Bar for Green Luxury. Checked 2026-08-14. Archived copy from 2026-08-15.
What would move this score
- Is guest room lighting tunable or circadian, and what specification is published?
- What colour temperatures are used in the evening, and are fixtures flicker free?
- Do sleeping areas have full blackout, and is it specified?
- What daylight access does a typical room have?
- Is exterior lighting shielded or reduced overnight?
EMF Harmony0Not published, 0 of 3.
Not published0 of 3 · Wired versus wireless topology, and what is measured where people sleep.
We looked for published information on EMF Harmony and found none. That is a gap in the public record, not a finding about the property.
What would move this score
- Are guest rooms wired for data, or is access wireless only?
- Where are wireless access points and smart meters placed relative to the bed?
- Have field levels been measured in sleeping areas, and by whom?
- Can a guest have wireless disabled in their room on request?
- Is any shielded cabling or shielding material specified in the build?
Materials and Textiles2Specified, 2 of 3.
Specified2 of 3 · Named materials, finishes, bedding composition and cleaning chemistry.
- Specified
The room features list states that guest room linens are organic cotton certified to Oeko-Tex. The particular Oeko-Tex standard, product class and certificate number are not published.
Luxury linens made from Oeko-tex certified organic cotton
PublishedHotel Marcel, Rooms. Checked 2026-08-14. Archived copy from 2026-08-15. - Specified
The room features list names the mattress model fitted in guest rooms. No core composition, foam type, cover fabric or flame retardant treatment is published for it.
Serta Perfect Sleeper TempActive Suite Dreams NXT mattress
PublishedHotel Marcel, Rooms. Checked 2026-08-14. Archived copy from 2026-08-15. - Specified
The design page names the casegoods designer and manufacturer and gives the casegoods as solid hardwood. No timber species, finish, adhesive or emission class is published.
Hotel Marcel features solid hardwood casegoods designed by Dutch East Design and produced by The New Traditionalist.
PublishedHotel Marcel, Design. Checked 2026-08-14. Archived copy from 2026-08-15. - Specified
The design page names the maker of the guest room window surrounds and vanities. No finish, sealant or emission class is published for the joinery.
The window surrounds and vanities were produced by the Stickley Furniture Company.
PublishedHotel Marcel, Design. Checked 2026-08-14. Archived copy from 2026-08-15. - Claimed
The hotel states that it uses environmentally friendly cleaning products. No product, brand, ingredient list or certification scheme is named.
Uses environmentally-friendly cleaning products
PublishedHotel Marcel, Sustainability. Checked 2026-08-14. Archived copy from 2026-08-15. - Claimed
The hotel states that no single use plastics are used for events, dining or guest room bathroom amenities. The statement is published under recyclable products as a waste measure and names no replacement material.
No single use plastics are used for events, dining, and guest room bathroom amenities
PublishedHotel Marcel, Sustainability. Checked 2026-08-14. Archived copy from 2026-08-15.
What would move this score
- What are the mattresses made of, and are they treated with flame retardants?
- What is the fibre content of the linen, and is it certified, for example to GOTS or OEKO TEX?
- Which paints, adhesives and sealants were specified, and are they low emission?
- What cleaning and laundry products are used, and is the list published?
- Are there named low emission certifications on the flooring or joinery?
Food and Kitchen2Specified, 2 of 3.
Specified2 of 3 · Sourcing, on site growing, cookware, kitchen water and additive discipline.
- Specified
Regional food press names Four Mile River Farm in Old Lyme, Connecticut as the beef supplier for the hotel's restaurant BLDG, and reports that each farm and purveyor is listed on the back of the menu. No share of purchasing and no certification is published.
Gill cites the Haus Burger as one of her favorite burgers ever, giving credit to the beef that's from Four Mile River Farm in Old Lyme, a family operation that prides itself on giving its livestock the best life possible.
PublishedCTbites, Former Hell's Kitchen Finalist Megan Gill is Cooking at Hotel Marcel's BLDG in New Haven. Checked 2026-08-14. Archived copy from 2026-08-15. - Specified
The restaurant's own about page publishes a list of named farms and purveyors including Four Miles River Farm, Norwich Meadows, G.R.O.W.E.R.S Inc., Arethusa Farm, La Belle Farm, Seacoast Mushrooms and LP Seafood and Specialty. No share of produce, sourcing radius or third party verification is published alongside the list.
Tying into BLDG's mission of sustainable dining, Chef sources her menu's ingredients locally and from farmers who instill sustainability into their practice.
PublishedBLDG, About. Checked 2026-08-14. Archived copy from 2026-08-15. - Claimed
The hotel states under sustainable operations that it procures locally sourced ingredients and sustainably produced offerings. No supplier, share or verification method is given in that statement.
Procures locally sourced ingredients and sustainably produced offerings
PublishedHotel Marcel, Sustainability. Checked 2026-08-14. Archived copy from 2026-08-15.
What would move this score
- What share of produce is grown on site or sourced locally, and is it verified?
- Which cooking oils are used, and is the policy published?
- What cookware is used in the kitchen?
- Is kitchen and ice water filtered, and to what specification?
- Is there a published position on additives, preservatives or allergens?
Biophilic and Healing Design2Specified, 2 of 3.
Specified2 of 3 · Nature access, views, volume and natural material contact, designed with intent.
- Specified
The room features list gives the bed as a custom walnut bed made in Connecticut with an integrated nightstand, naming the timber in direct contact with the sleeping area.
Connecticut-made custom walnut bed with integrated nightstand and custom sconces
PublishedHotel Marcel, Rooms. Checked 2026-08-14. Archived copy from 2026-08-15. - Specified
The design page names the materials of the circulation spaces, including board formed concrete walls, steel railings, mahogany handrails and terrazzo treads and risers.
The stairwells feature board-formed cast-in-place concrete walls, but steel machined railings, mahogany handrails, and trapezoidal terrazzo treads and risers.
PublishedHotel Marcel, Design. Checked 2026-08-14. Archived copy from 2026-08-15. - Claimed
Trade press reports that the conversion created two light wells and turned former mechanical spaces into open air courtyards to bring daylight further into the plan. The intent is published, no dimensions or daylight measurement are given.
distributing more daylight to the interior with the creation of two light wells and the transformation of former mechanical spaces into open-air courtyards
PublishedArchitectural Products, Making Passive House History at Hotel Marcel. Checked 2026-08-14. Archived copy from 2026-08-15. - Claimed
The design page describes the building envelope as precast concrete panels framing 525 windows. The count is a building element count and no window area, room volume or ceiling height is published.
The hotel's exterior is composed of high-strength precast concrete panels known as Mosai panels that frame the building's 525 windows.
PublishedHotel Marcel, Design. Checked 2026-08-14. Archived copy from 2026-08-15.
What would move this score
- Does every guest room have direct outdoor access or an operable opening?
- What is the published design intent behind the natural materials used?
- What are the typical ceiling heights and room volumes?
- Was the landscape designed with native planting, and is the palette published?
Sound and Sensory Ecology2Specified, 2 of 3.
Specified2 of 3 · Measured background noise, separation between keys, and scent load.
- Specified
The room features list describes the guest room windows as triple pane and sound insulated. No sound transmission class, glazing manufacturer or measured internal noise level is published.
Triple-pane energy-efficient sound insulated 5 foot-high windows with Stickley hardwood window surrounds
PublishedHotel Marcel, Rooms. Checked 2026-08-14. Archived copy from 2026-08-15. - Specified
Trade press gives the replacement glazing specification as triple glazed, argon filled and laminated, and states the windows act as acoustic dampeners given the hotel's proximity to Interstate 95. No decibel figure or sound transmission rating is published.
In addition to the insulation, the windows also act as acoustic dampeners which is key as the hotel sits close to I-95.
PublishedArchitectural Products, Making Passive House History at Hotel Marcel. Checked 2026-08-14. Archived copy from 2026-08-15. - Claimed
A travel publication reports the writer's impression that highway noise was not audible in the guest room. No measurement was taken and none is published.
the thick windows completely drown out the noise from the surrounding highways
PublishedMatador Network, New Haven's All-Electric Hotel Is Raising the Bar for Green Luxury. Checked 2026-08-14. Archived copy from 2026-08-15.
What would move this score
- What is the measured background noise level in a guest room at night?
- What acoustic separation is specified between adjoining keys?
- How loud is the guest room air conditioning at its lowest setting?
- Is fragrance diffused into guest rooms or public areas, and can it be declined?
38 open questions could be answered with information this property already holds. Answer these for this property
Where you’ll be
New Haven, Connecticut, United States
41.2965, -72.9186 · Open the full map · © OpenStreetMap contributors
What is not publishedthe gaps we looked for and did not find
EMF Harmony has nothing published. The hotel publishes complimentary WiFi for Hilton Honors members as a room amenity, which is neither a disclosure of network topology nor evidence of its absence, and nothing is published about wired data in rooms, access point or smart meter placement relative to beds, measured field levels, or whether wireless can be switched off on request. The building's all electric operation and its Power over Ethernet low voltage lighting are published as energy measures and say nothing about the wireless environment or the wiring around a bed, so neither has been counted there. Water Integrity rests on a single press mention of touch free water stations: no water source, treatment train, room level filtration, laboratory panel or pool chemistry is published. On air, no carbon dioxide, particulate or volatile organic compound readings are published, no fresh air supply rate per person is given, and no mould inspection protocol appears. On light, no colour temperature schedule, flicker performance or circadian specification is published. On materials, no paint, adhesive, sealant or flooring emission class is named, no mattress composition or flame retardant information is published, and no cleaning product is named. On food, no share of produce, cooking oil policy or cookware is published. On sound, no measured background noise level, no acoustic separation rating between adjoining keys, no plant noise figure and no fragrance policy are published. The published energy figures, an energy use intensity of 34 kBtu per square foot, over 575,000 kWh of annual solar generation, 1.5 MWh of battery storage, an 80 per cent reduction in ventilation conditioning energy, a 30 per cent lighting energy reduction and airtightness reported as 10 per cent better than the EnerPHit requirement, measure energy rather than anything the eight pathways cover and have not been scored. The 110,000 square foot building area and the published room areas are building dimensions and were likewise not counted. One source could not be read: the USGBC project page for Hotel Marcel returned a logged out view, so the LEED scorecard credit detail, including any low emitting materials, enhanced indoor air quality or acoustic performance credits, could not be checked and nothing has been inferred from it.
Other standards held
Useful context. A held standard does not move a pathway score on its own. It moves a score only through the evidence that standard publishes.
Regional context2 public figures about the area, none of which scores
Public data about the surrounding area. None of it contributes to the score, because a property cannot be marked down for the conditions outside it.
- Safely managed drinking water, USA: The World Health Organization reports 98 per cent of the population nationally, 98 per cent in urban areas using a safely managed drinking water service. This describes the country, not this property, and says nothing about what reaches a guest room here. It is recorded because it is the background against which a property's own treatment is worth publishing. Source
- Ambient PM2.5 and PM10 near New Haven, Connecticut, United States: Modelled ambient air over this location averaged 12.2 micrograms per cubic metre of PM2.5 and 13.4 of PM10 across the 720 hours to 2026-08-17, peaking at 67.5 PM2.5. The World Health Organization annual guideline for PM2.5 is 5. This is the outdoor air over the area, modelled rather than measured on site, and it is not a reading of the air inside any room. Source
Not published is not unsafehow to read these scores, and what this index does not promise
A low score means a property has not published information. It does not mean the property is unsafe, unhealthy or poorly run.
These scores measure disclosure. These scores describe disclosure, not property quality. This index has no commercial relationship with the properties listed unless a badge on the listing says otherwise.
Conditions change, and we will not always know. Every record is a snapshot of what a property had published when we read it, and that date is on the page. Conditions change: a property can refit, change suppliers or replace a system at any time, and nothing requires it to tell us. We re-read records and ask properties directly for updates, but there will always be a gap between what is true today and what was published when we looked. Use this as a frame of reference for what to ask, not as a substitute for asking. Take your own questions to the property before you book, and tell us if you find something we have wrong.
We report what properties publish. We do not inspect, certify or vouch for any property on this index unless a listing says we assessed it on site, and we accept no responsibility for decisions made or outcomes experienced on the basis of what you read here.