Heimer Engineering New York pre-purchase home, building, condo, and co‑op inspection
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Applying Scientific and
Engineering Principles to
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Air Conditioning and
Home Inspections

Professional Engineer Inspectors
Applying Scientific and Engineering
Principles to Home Inspections
and Building Inspections

Pre-Purchase Home, Building, Condo, and
Co-op Inspections in Manhattan, Queens,
Brooklyn, Bronx, Staten Island, Nassau,
Suffolk, Rockland, Putnam, and Westchester

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Air conditioning refers to the system that cools the home, building, condo, or co-op during warm, humid summer months.A Professional Engineer's home inspection should describe the condition of the air-conditioning system. Air conditioning refers to the system that cools the home, building, condo, or co-op during warm, humid summer months. Not all homes have air conditioning. If a home is in a relatively cool area such as the south shore of Long Island, it may rarely need air conditioning. Warmer areas such as Westchester, or areas with limited ventilation (such as an office or apartment in a high rise building) need air conditioning to remain comfortable. Densely populated areas like New York City depend on air conditioning to make offices and apartments habitable.

Even a properly functioning air conditioning system will leave some areas of the building relatively warm and other areas relatively cool. In addition, the airflow associated with an air conditioning system makes some people feel cold.

Central Air Conditioners

With a central air conditioning system, the compressor is typically outside the building. For suburban homes, the air conditioning compressor is usually located on the side or behind the house. In buildings (including condo and co-op buildings), the compressor may be located on the roof.

The refrigerant is circulated through the building and into a device called an air handler (sometimes called a fan coil unit). The air handler can be located in the basement, attic, or a utility room. The air inside the building is circulated through the air handler, and over coils containing the refrigerant. This chilled and dehumidified air cools the interior of the building.

Room Air Conditioners

A room air conditioner contains both the compressor and air handler componentsA room air conditioner contains both the compressor and air handler components. Typically, one needs one air conditioner per room. In some cases, a room air conditioner will cool a larger area, such as a large open living room, dining room, and kitchen combination. A single room air conditioner may also cool a smaller, multi-room condo or co-op unit. With a room air conditioner, the area of the room near the unit is usually cooler than other areas of the room. In addition, room air conditioners can be much noisier than central air conditioners.

A room air conditioner can also be a split system. Essentially, the compressor and air handler portion are split, so the compressor can be mounted outside and the air handler can be mounted anywhere in the room. Some split systems have multiple air handlers with a single compressor. Many split systems also provide heat. Split systems are generally quieter than room air conditioners. These characteristics makes a split system air conditioning ideal for a room which has different heating and cooling characteristics than the rest of the home or building.

PTAC Units

PTAC units (Packaged Terminal Air Conditioner) are found in hotel and motel rooms, and in new or renovated condo or co-op apartments. They are similar to through-the-wall room air conditioners, except that they typically provide both heating and cooling. PTAC units are generally quieter than room air conditioners. PTAC units could have compressors for cooling, or there could be an external cooling tower circulating chilled water. The PTAC unit's heat can come from an internal heat pump, an internal gas burner, or circulated water from an external boiler.

Heat Pumps

Heat pumps are essentially reversible air conditioners.Heat pumps are essentially reversible air conditioners. During the warm, humid summer months, a heat pump acts as an air conditioner and provides cooling. During colder months, the heat pump essentially cools the outside air, and the heat generated by the cooling process is used to heat the home, condo, or co-op unit.

Heat pumps are generally not well suited for larger buildings, unless a heat pump is provided in each space. This is usually done in the form of a PTAC unit. Some newer condos and co ops have a heat pump that is designed for installation in the building. These heat pumps use an outside vent, and are designed to be located within a condo or co-op apartment.

Heat pumps depend on electricity to operate. When the outdoor temperature is near freezing, an internal electric heater is needed to provide heat. This can make a heat pump expensive to operate during the cold winter months.

Evaluation of
Air Conditioners

Air conditioning systems are best evaluated when the weather outside is hot and humid.Air conditioning systems are best evaluated when the weather is hot and humid. Concerns such as an air conditioning system that is old and outdated can be checked year round. If it is cool during the inspection, the system should be rechecked on a hot, humid day if possible. If an air conditioning system has been turned off for the season, it may have to be serviced before activation.

Attic ventilation needs to be considered when evaluating the air conditioning system. Insufficient attic ventilation can cause increased cooling costs. A thermostatically controlled attic fan can reduce the cost of cooling a home.

An air conditioner may have been added after the building was constructed. The addition of the air conditioner may have created a potentially hazardous electrical condition. Our Professional Engineers evaluate whether the electric service is sufficient for the air conditioners.

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Applying Scientific and
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Call for a Home InspectionHeimer Engineering New York pre-purchase home, building, condo, and co‑op inspectionsHeimer Engineering℠ is happy to help you. Senior Staff members are available Monday through Friday from 9 AM to 5 PM.  After 5 PM, please leave a message. Messages are checked during the day on Sunday, and Sunday evening through Thursday evening. Inspections are performed seven days a week.

Heimer Engineering's℠ inspection fees are competitive with non-Engineer Home Inspector's fees, especially when you consider that many non-Engineers charge extra for termite inspections, swimming pools, etc.

Inspection orders are taken by senior staff members. A real estate purchase is complex and you should be able to speak with someone who can answer your inspection questions.

To set up an appointment for a pre-purchase inspection or to find out about Engineering services or expert court testimony email Info@heimer.com, text 888.769.6910, or call 646.757.4500. If no staff member is in the office, leave a message.

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Standards of Practice
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Heimer Engineering's℠ Professional Engineer Home Inspectors substantially adhere to the InterNACHI® Code of Ethics, to Subpart 197-4 of the State of New York Code of Ethics and Regulations for Home Inspectors, the ASHI® Standards of Practice, and the National Society of Professional Engineers (NSPE®) Code of Ethics. In the event of a conflict, the Professional Engineer Home Inspectors use Engineering judgment to decide what standard or Engineering principle takes precedence. All State of New York Licensed Professional Engineers are bound by New York State Education Law Article 145.

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Inspections are performed only after the client signs a Pre-Inspection Agreement. Use of this website is governed by our Terms of Use. This website is made available for informational purposes and does not represent a professional opinion of your situation.

Heimer Engineering PC℠ performs home inspections, building inspections, condo inspections, and co-op inspections in the State of New York. Expert witness services are provided regarding playground injuries, parking lot, walkway, and stairway slip, trip, and fall.

The Heimer Engineering PC℠ website was designed and is maintained by . The contents of this website were written by . This website is not intended to offer Engineering opinions or advice. Sitemaps and indexing information can be found at Page Sitemap, Image Sitemap, Mobile Sitemap, and Video Sitemap.

©1997-2018 Andrea and Harold Krongelb. All rights reserved. Used under a revocable license by Heimer Engineering PC. All documents and methods used by Heimer Engineering PC are owned by Harold and Andrea Krongelb and are used under a revocable license.

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Heimer Engineering PC
2171 Jericho Turnpike, Suite 230
Commack, New York, USA 11725-2947

New York Metro: 646.757.4500
Bronx, New York: 718.547.2000
Brooklyn, New York: 718.237.7777
Manhattan, New York: 212.563.4777
Long Island, New York: 516.487.2100
Long Island, New York: 631.549.2500
Nassau County, New York: 516.487.2100
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