Omnia Mechanical Group

571 Timpson Place Bronx, NY 10455

Phone: 212-534-2500

Contact us on email!

6 Signs of a Bad Circulator Pump

If you own or manage a rental property in New York City, you know having adequate heat and hot water for tenants is a top priority. One of the devices that helps ensure that is a circulator pump. Here are six signs of a bad circulator pump you should be aware of. When you know the signs, you can recognize them before your phone starts ringing off the hook because tenants are unhappy.

Purpose of the Circulator Pump

Keep hot water flowing

Also known as a recirculator or recirculation pump, your circulator pump is part of your hot water system. In some properties, it’s used solely to keep hot water moving through the pipes at all times. This way, tenants never have to wait for hot water at the tap. Ultimately, recirculating hot water is more convenient and less wasteful. It can also help property owners save money on water and energy bills.

In some buildings, a circulator pump is also part of the boiler system. Not only does it propel hot water through the pipes for bathing and cleaning, but it also keeps a steady supply of hot water available for steam heating.

Signs of a Bad Circulator Pump

No water in the system

Depending on the anatomy of your plumbing, you may see no water circulating at all, or you may have hot water only at certain spigots. Often this isn’t due to a complete failure of the pump but rather, it’s a stuck impeller. The impeller is the guts of the pump. It moves water from the pump’s intake side to its outlet. It resembles a fan or water wheel.

Sometimes tapping the pump can get the water circulating again. If that doesn’t work, it’s time to have a pump expert check it out to see if it simply needs cleaning or if it needs a complete replacement.

Occasionally, we see a circulator pump that is inadequate for the needs of the property. This can occur if the wrong pump was installed or if the needs of the building have increased since the circulator pump was first put in. Swapping out the pump should fix this issue.

Radiators not getting hot

If you rely on a circulator pump to supply your radiators and your circulator pump is not working, you will not get heat or will get very little heat. Tenants will be quick to tell you about this!

Usually, you can tell that the pump is not coming on or staying on (see below), which means it needs cleaning, repair, or replacement. If the pump is working, the lack of heat is due to another problem with your heating system, such as the boiler itself, the pipes supplying the radiators, or radiator valves.

Pump won’t come on or stay on

A circulator pump that won’t come on at all or that refuses to stay on could be due to a few different problems:

  • Disconnected or corroded wiring (may require attention from an electrician)
  • Broken parts inside the pump, including the pump motor that powers the impeller
  • Problems with the relay switch, causing the pump motor to fail to turn on or to cut out intermittently
  • Malfunctioning or incorrectly adjusted bypass valve (see “Hot water coming from the cold tap,” below)
  • Pump overheating and shutting off
  • Thermostat not adjusted properly or not working
  • Failure to coordinate between the thermostat and the pump’s aquastat, which decides when to turn the pump on or off depending on the temperature of the water

If you’ve done what you can to evaluate or fix these causes and the pump is still failing, it’s time to call the pump professionals.

Noisy pump

A circulator pump that makes excessively loud or unusual noises has something wrong with it. Likely candidates include:

  • Wrong size pump for the system (too large or too small)
  • Air in the line (needs to be bled)
  • Bearings need replacement or have come loose
  • Pump not properly aligned with pipes
  • Internal part malfunctioning, such as a valve
  • Improper pump mounting

Pump leaking water

Leaking water is also a sure sign that something is wrong. You may notice a related drop in water pressure along with this symptom. If you see rust on the exterior of the pump or nearby, you know the leakage has been going on for some time.

Typically, this problem can be repaired, meaning you won’t have to replace the entire unit. We usually see one of four things causing leaks: worn or broken mounting bolts, worn or broken seals (AKA gaskets), improperly attached or broken flanges or joins, or malfunctioning valves.

If you’re stuck dealing with a bad circulator pump, don’t let it turn into a major headache for you and your tenants. Reach out to Antler Pumps today by calling 212-534-2500 or using our easy online form to schedule an appointment.

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 We may collect and store the following personal information:

  • Name, email, address, telephone number, and (depending on the service used), move-in dates;
  • Transactional information (such as lease terms, lease parties);
  • Computer sign-on data, statistics on page views, and traffic to and from the Website; and
  • Other information, including IP address and other web log information.

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 Antler Pump & Motor Corporation, 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 Antler Pump & Motor Corporation. 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: