Omnia Mechanical Group

571 Timpson Place Bronx, NY 10455

Phone: 212-534-2500

Contact us on email!

Four Season Rooftop Maintenance Checklist for Apartment Buildings

If you own or manage an apartment building in New York City, rooftop maintenance is key to keeping multiple systems in the property running smoothly, especially HVAC. Here is a rooftop maintenance checklist from Antler Pumps, experts in pump maintenance, repair, and installation. We’ve covered all four seasons because it’s vital you give your rooftop the attention it deserves throughout the entire year.


Preparing for heat season

The autumn months are all about preparing for the oncoming heat season, when windows are closed and air circulation is more important than ever. Your building’s ventilation system draws in clean, fresh air and exhausts dirty air through the rooftop via exhaust fans.

Air quality is related to the following for your building occupants:

  • Allergies and asthma
  • Cigarette smoke
  • Carbon monoxide buildup
  • Mold and mildew
  • Radon poisoning
  • Colds, flu, and viral illnesses
  • Particulate matter, like soot and pollution
  • Unpleasant odors

Failure to provide adequate fresh air in your apartment building can violate New York building codes and result in expensive citations. If you have problems with one or more of the above concerns, it could be a sign your ventilation system isn’t working properly.

Another sign is noisy HVAC that’s too loud or making strange sounds. It’s been our experience that this is often due to a malfunction of rooftop exhaust fans. A classic sign of rooftop exhaust failure is if lower floors have worse air quality than those far above them – a phenomenon we see often with high-rise buildings.

In fall, it’s wise to double-check that your rooftop exhaust system is working properly, before the demand for heat has it running full-bore. Follow these steps before the snow flies:

  • Clear away leaves that have collected after falling from trees.
  • Remove any trash or plant detritus from autumn wind and storms.
  • Visually inspect your fans for corrosion, rust, buildup of unwanted material, loose blades, poor electrical connections, etc.
  • Run exhaust fans to check for proper function and noise.
  • Call Antler Pumps if you have questions or if something doesn’t seem right.

Fall is a perfect time to schedule an annual maintenance check with professionals. They can sometimes find small problems that you might miss, keeping little issues from becoming more expensive ones later.


Preventing ice and snow damage

In winter, your primary duty is to keep those rooftop exhaust fans running in optimal shape. As well as performing all the duties above, as needed depending on the weather, snow and ice removal is essential.

Snow and ice can block fans, preventing dirty air from being expelled. It can also cause permanent damage to your fans and other rooftop equipment. Excess snow can also be melted by exhaust fans, which then freezes and causes more troubles. Therefore, the best course of action is to remove as much snow and ice from around your fans, clearing a space around them. This will also come in handy if your exhaust fans should need any service during the winter.


Winter cleanup plus getting ready for AC season

Ah, the joy of spring in New York City! When the city emerges from its winter cocoon, it’s time to get back up on the roof to prepare for warmer weather. Not only does this entail making sure your rooftop exhaust fans are working well, but you should be thinking about air conditioning too. Weather is more unpredictable than ever lately, but it seems like the city always goes from blustery weather to summer heat overnight.

Once the snow has melted, inspect the roof equipment for damage and again remove any leaves, twigs, blown trash, and the like, so they don’t block any openings where airflow is required. If you’re thinking about another time for an annual rooftop check or a biannual service call to pair with autumn, spring is an excellent choice. You don’t want tenants complaining about malfunctioning air conditioning during the summer months, and servicing your roof equipment in spring reduces the likelihood you’ll have to be up on the roof in oppressive summer heat.


Keeping your cooling system healthy

Why is it important to do the spring cleaning on your rooftop? Your cooling towers are located there too, and they are an integral part of your air conditioning operation.

Let’s take a moment to review how cooling towers function. They work to lower the temperature of air being blown into a building’s interior via the AC. They contain water, which pulls heat from the system, and release it into the air in an evaporative process.

  1. Water absorbs heat as it moves through a heat exchanger.
  2. The water next moves over the cooling tower, where exposure to air causes some of it to evaporate.
  3. The warm air travels into the atmosphere, leaving only cool air behind.
  4. The cool water then goes through an air handler connected to a water coil that provides cooling to interior spaces.
  5. Cool air enters inside as warm air is moved outside.

It’s a very efficient system that’s also cost-effective for property owners. Additionally, it doesn’t freeze like conventional air conditioning units, and cooling towers take up a smaller footprint.

Cooling towers are subject to a few common problems, so you want to check them at the start and end of every summer. If parts need to be cleaned, repaired, or replaced, you want to do it on either side of times when the towers are in high use.

  • Wear and tear over time is usually due to corrosion. If you observe corrosion in your plumbing or boiler system, it’s probably going to show up in your cooling towers as well. Even if you don’t see it, you may hear it when the towers operate.
  • Mineral scale accumulation is common in New York City apartment buildings because of our hard water. If you have hard water buildup (“lime”) in other areas of the property, expect it in your cooling towers. You can try to remove it with something acidic. But, if the buildup is too serious, parts will have to be replaced to prevent mechanical failure and blockages in water conduits. A filtration system should be installed upstream to prevent this in the long term.
  • The pumps in cooling towers are susceptible to both corrosion and mineral scale problems. They can also suffer from electrical parts wear or breakage, loose mountings, damaged internal parts (valves, impellers, etc.), and motor failure.

Any signs of the above should prompt a call to Antler Pumps for service. You can reach us at 212-534-2500 or schedule an appointment online. Don’t wait until your vital rooftop equipment malfunctions and causes an emergency for you. Reach out for routine maintenance and repairs, and don’t forget to put this four-season checklist on your calendar.

Our Privacy Policy

Omnia Mechanical Group(the “Company”) strives to ensure the highest standards for property listings and customer information privacy. Please review the following statement to learn about our company practices and policies. Please be aware that our Privacy Policy is subject to change at any time.

1. Purpose.

This Privacy Policy (“the Policy”) provides information on how the Company uses your personal information. By agreeing to the Policy, you agree to our collection and use of your personal information as described in the Policy. This Privacy Policy is effective for all new users of

2. Personal Information.

You can browse some areas of (“the Website”) without being a registered user. However, certain activities do require registration. (You consent to the transfer and storage of your information by registering with

3. Use of Information.

Our primary purpose in collecting personal information is to provide you with a safe and user-friendly experience. For example, the Company may use your personal information to:

  • Improve our services and the Website’s content and layout;
  • Provide the services and necessary customer support you request;
  • Resolve disputes, collect fees, and troubleshoot problems;
  • Track and record customer satisfaction with our services;
  • Protect the Company against error and fraud;
  • Inform you of special promotions and announcements;
  • Enforce our agreements, terms, conditions, and policies; and
  • As otherwise described to you at the time of collection.

We may occasionally ask you to complete optional surveys. These surveys are used to improve and customize your experience with

The Company always provides you the ability to opt-out of further communication such as promotions and surveys; see the Opt-Out section below.

The Company does not share any of your personal information with outside organizations, companies, individuals, etc. The only exception to this standard is if such a disclosure is reasonably necessary to respond to any and all legal processes.

4. Links to Other Sites.

The Website may have links to other websites that may collect personally identifiable information about you. The Company is not responsible for the privacy practices of the content of those linked websites.

5. Safety & Security Precautions.

The Website has strict security measures in place to protect you and your information from fraud. Once your information is provided to Omnia Mechanical Group, we strive to ensure the confidentiality of your identity and information.

6. Opt-Out.

The Company provides you with the opportunity to opt-out of receiving promotional and other non-essential, marketing-related communications from Omnia Mechanical Group. If you would like to opt-out of these select communications, please see any of the Company’s email communications and follow the directions indicated.

7. Account Protection.

Your password ensures the security of your account. When choosing a password, the Company suggests using various characters. It is highly recommended that you do not disclose your password to anyone. (If you do disclose your password or your personal information with others, you are responsible for all actions taken in the name of your account.) If the security of your password is compromised for any reason, please contact the Company immediately.

8. Accuracy of Information

The Company does not guarantee the accuracy of information for any and all of its properties on the Website, and is not responsible for any errors or misrepresentations (made by Renters, the Client, or otherwise).

9. Cookies

The Company may place a small cookie on your computer’s hard drive. This allows us to personalize your use on the Website. In order to maximize the functionality and usability of the Website, you must set your browser’s preferences to allow both permanent and temporary cookies.

10. Changing Your Personal Information.

Should your personal information change, please immediately update your information on the Website. This will ensure the accuracy of our records. The Company does retain personal information from closed accounts in order to comply with law and collect and disburse any fees owed.

11. Third Parties

This Privacy Policy addresses only the use of information we collect from you. Since does not control the privacy policies of third parties, you are subject to the privacy policies of those third parties. It is advisable that you consult with the management of third parties before you disclose your personal information to others.

12. General

We may amend this Privacy Policy at any time by posting the amended terms on the Website. All amended terms are immediately effective after they are initially posted on the Website.

13. Privacy Policy Questions & Concerns

Questions and/or concerns regarding the Policy should be emailed to the following email address: