ECR International Recalls Gas-Fired Hot Water Residential Boilers Due to Carbon Monoxide Poisoning Hazard

What was recalled

In mid-July of 2023, the Consumer Product Safety Commission (CPSC) announced a significant safety recall involving gas-fired hot water residential boilers manufactured by ECR International. This is not a minor issue affecting a single batch; it encompasses a wide array of models distributed under several well-known brand names that homeowners often rely on for heating their homes. The brands affected include Dunkirk, Utica Boilers, Utica Heating, Pennco, Green Mountain, and Columbia. If you have one of these units installed in your basement or utility room, it is important to verify whether your specific model is part of this recall.

The recalled products are specifically residential boilers designed to heat water for home use. Physically, these units are characterized by their blue and/or gray coloration. They stand approximately 32 inches tall, with widths ranging from 13 to 27 inches and a depth of 26 inches. To determine if your boiler is included in this recall, you must look at the rating plate located on the front left corner of the top panel of the unit. This plate contains both the model number and the serial number, which are the critical pieces of information needed to confirm eligibility for the remedy.

The scope of the recall covers specific model numbers across the various brands. For Dunkirk boilers, the affected models are DXL-K series units: DXL-060K, DXL-095K, DXL-120K, DXL-150K, DXL-175K, DXL-205K, and DXL-235K. Utica Boilers MGB-K models include MGB-060K through MGB-235K. Columbia MCB-K models range from MCB-060K to MCB-235K. Utica Heating’s UH15B-K series includes units from UH15B-060K to UH15B-235K. Pennco’s 15B-K series covers models from 15B-060K to 15B-235K, and Green Mountain’s GMGW-K series includes units from GMGW-060K to GMGW-235K.

It is crucial to check the serial numbers as well, as not every unit with a matching model number may be affected. The recall specifies precise serial number ranges for each brand. For instance, Dunkirk DXL-K models are included if their serial numbers fall between 392201652s and 402202738s, or specifically at 012302567s and 012302571s. Similarly, Utica Boilers MGB-K models are affected if their serial numbers are between 402200481s and 402202693s, or from 012302268s to 012302566s. Columbia MCB-K models are included if serial numbers range from 402201449s to 402202214s. Utica Heating UH15B-K models are affected if serial numbers are between 392201654s and 402202800s, or from 012302274s to 012303099s. Pennco 15B-K models are included if serial numbers fall between 392202597s and 402202806s, or from 012301918s to 012303055s. Finally, Green Mountain GMGW-K models are affected if serial numbers are between 392201653s and 402202686s, or from 012301924s to 012301961s. While the provided recall facts do not specify the exact number of units sold or the specific retail locations where they were purchased, the breadth of the serial number ranges suggests a substantial volume of equipment is involved.

The hazard, explained

To understand why this recall is so serious, it helps to look at what these boilers are actually doing inside your home. Gas-fired hot water residential boilers like the Dunkirk, Utica, Pennco, Green Mountain, and Columbia models involved in this ECR International recall operate by burning natural gas or propane to generate heat. This combustion process is necessary to warm the water that circulates through your radiators or baseboard heaters. However, whenever you burn fuel, it creates exhaust gases. In a properly functioning system, these harmful byproducts—most notably carbon monoxide (CO)—are safely vented outside your home through a flue pipe.

The specific mechanical failure here involves the flue inspection cover plate. This small but critical component is designed to seal an opening in the boiler’s exhaust pathway. Its job is to ensure that all combustion gases are directed out of the house and into the atmosphere. When this cover plate is missing, as it is on the affected units, that seal is broken. Instead of flowing entirely up and out through the vent, some of the exhaust gases can leak back into the boiler’s combustion chamber and escape directly into the room where the unit is installed.

This leads to the primary danger: carbon monoxide poisoning. Carbon monoxide is often called the "silent killer" because it is completely invisible, odorless, and tasteless. You cannot see it, smell it, or detect it with your senses. When it leaks from a boiler due to a missing cover plate, it can accumulate in the enclosed space of your home, especially in areas with poor ventilation. Because it binds to hemoglobin in your blood more effectively than oxygen does, it starves your body’s tissues and organs of oxygen.

The effects of carbon monoxide exposure vary depending on the concentration and duration of exposure. At lower levels, symptoms can mimic common illnesses or fatigue, including headaches, dizziness, nausea, and confusion. These subtle signs are particularly dangerous because people may not realize they are being poisoned until it is too late. At higher concentrations, or with prolonged exposure, carbon monoxide can cause loss of consciousness, severe organ damage, and even death. Since the recalled boilers do not necessarily have a mechanism to alert you that this leakage is occurring, you could be breathing in dangerous levels of gas without any immediate warning signs from the equipment itself.

This hazard is especially concerning because these units are installed in residential settings, often in basements, utility rooms, or closets adjacent to living spaces. While the CPSC notes that no incidents have been reported to date, the potential for harm is real and immediate. The absence of the cover plate removes a vital layer of safety engineering, turning a standard heating appliance into a potential source of invisible, life-threatening gas exposure.

Who is most at risk

The individuals most immediately vulnerable to the hazard posed by these recalled ECR International gas-fired hot water residential boilers are the homeowners and tenants who live in the residences where these specific units are installed. Because the defect involves the potential release of combustion flue gases, including carbon monoxide, anyone sharing the living space with an affected boiler is at risk. This includes all occupants of the home, regardless of their location within the house, as carbon monide is a colorless, odorless gas that can spread through ventilation systems and open doorways if the boiler fails to vent properly due to the missing inspection cover plate.

While anyone in the home faces potential exposure, certain groups are physiologically more susceptible to the harmful effects of carbon monide poisoning. Young children are particularly at risk because their bodies are still developing, and they breathe faster than adults, meaning they may inhale a higher concentration of toxins relative to their body weight. Their smaller lung capacity and less developed immune systems make it harder for their bodies to cope with oxygen deprivation. Furthermore, young children may be unable to recognize the early symptoms of carbon monide exposure, such as dizziness, nausea, or confusion, which can lead to delayed recognition of the danger by caregivers.

Elderly individuals and those with pre-existing cardiovascular or respiratory conditions also face heightened risks. For older adults, the body’s ability to compensate for reduced oxygen levels diminishes with age. Individuals with heart disease, anemia, or chronic lung conditions like COPD may experience severe complications even at lower levels of exposure that might only cause mild headaches in a healthy person. The stress placed on the heart and lungs by carbon monide can exacerbate these underlying conditions, potentially leading to cardiac events or respiratory failure.

Pregnant women are another group that requires careful consideration. Carbon monide crosses the placenta and can bind to fetal hemoglobin more strongly than adult hemoglobin, potentially reducing the oxygen supply to the developing fetus. This can lead to serious health complications for both the mother and the baby. Additionally, because carbon monide poisoning symptoms often mimic flu-like illness (such as fatigue, headache, and nausea), pregnant individuals might mistakenly attribute these signs to normal pregnancy discomforts or a common cold, delaying critical medical intervention. It is crucial for all residents in homes with Dunkirk, Utica Boilers, Utica Heating, Pennco, Green Mountain, or Columbia boilers matching the listed model numbers to treat this recall with urgency, recognizing that the risk is not just about equipment failure, but about the invisible, immediate threat to human health.

How to tell if you have the recalled item

Identifying whether your boiler is part of this recall requires a careful look at both the physical characteristics of the unit and, most importantly, the specific model and serial numbers printed on its rating plate. Because these gas-fired hot water residential boilers are manufactured under several different brand names by ECR International, it can be easy to miss the connection if you only know the sticker on your wall. The affected units may be branded as Dunkirk, Utica Boilers, Utica Heating, Pennco, Green Mountain, or Columbia. Even though they carry these distinct trade names, they share similar physical traits that can help narrow down the search.

Visually, you should look for a boiler that is predominantly blue and/or gray in color. In terms of dimensions, the recalled units are 32 inches tall, with widths ranging from 13 to 27 inches and a depth of 26 inches. While these measurements provide a general idea of the size, they are not definitive proof on their own. The only way to confirm if your unit is included in this recall is to locate the boiler rating plate.

The rating plate is typically located on the front left corner of the top panel of the boiler. This small metal or plastic tag contains the critical information you need: the brand name, the specific model number, and the serial number range. You must check these against the official list to determine if your unit is affected. The recall covers specific models for each brand, including:

• Dunkirk: Models DXL-060K through DXL-235K.
• Utica Boilers: Models MGB-060K through MGB-235K.
• Columbia: Models MCB-060K, MCB-095K, MCB-120K, MCB-150K, MCB-175K, and MCB-235K.
• Utica Heating: Models UH15B-060K through UH15B-235K.
• Pennco: Models 15B-060K through 15B-235K.
• Green Mountain: Models GMGW-060K through GMGW-235K.

Knowing the model number is only half the equation. You must also verify that your serial number falls within the specific ranges listed by the CPSC for each model. For example, if you have a Dunkirk DXL-K series boiler, its serial number must fall between 392201652s and 402202738s, or be exactly 012302567s or 012302571s. Similarly, Utica Boilers MGB-K models are included if their serial numbers are between 402200481s and 402202693s, or between 012302268s and 012302566s. Each brand and model combination has its own unique serial number boundaries that define the scope of the recall.

If you are unsure where to find your rating plate or if the numbers are difficult to read, do not guess. The CPSC advises consumers to contact ECR International directly for assistance. You can reach them at 800-241-5501 from 8 a.m. to 4:30 p.m. ET, Monday through Friday, or via email at ecrcustomerservice@ecrinternational.com. They can help you verify whether your specific unit is part of this recall before you take any further action.

What to do — step by step

Your refund, repair, or replacement options

If you have confirmed that your unit is part of this recall, the most important thing to know right now is that ECR International has committed to making it right at absolutely no cost to you. You do not need to worry about the financial burden of fixing a manufacturing defect, and you certainly should not feel pressured to purchase a new boiler to resolve the issue. The remedy provided in this recall is straightforward: they will send a technician to your home to perform a free inspection and repair. Specifically, if the flue inspection cover plate is missing from your unit, they will install it for free. This action directly addresses the carbon monoxide hazard by ensuring that combustion gases are properly vented and contained, restoring the safety integrity of your heating system.

To get this process started, you need to reach out to ECR International directly. They have set up dedicated channels to handle these inquiries efficiently. You can call their customer service line at 800-241-5501. Please note that this line is open from 8 a.m. to 4:30 p.m. Eastern Time, Monday through Friday. If you prefer to communicate in writing or need to submit documentation digitally, you can send an email to ecrcustomerservice@ecrinternational.com. For those who like to manage their home maintenance online, ECR International also maintains a dedicated recall page at www.ecrrecall.com. You can also visit their main website at www.ecrinternational.com and look for the "Recall" link to find more detailed information and guidance.

When you contact them, be prepared to provide specific details to help them locate your record quickly. The recall affects units from several brands under the ECR International umbrella, including Dunkirk, Utica Boilers, Utica Heating, Pennco, Green Mountain, and Columbia. You will need to have your model number and serial number ready. These numbers are stamped on the boiler rating plate, which is located on the front left corner of the top panel of the unit. Because the recall spans multiple model series (such as DXL-K, MGB-K, UH15B-K, 15B-K, GMGW-K, and MCB-K) and specific serial number ranges, having this exact information will prevent delays in scheduling your repair.

It is worth noting that the recall notice does not mention a refund or a full unit replacement as standard options. The primary remedy is the inspection and installation of the missing cover plate. This suggests that the core structure of the boiler is sound, but the safety component was omitted during manufacturing. Therefore, expecting a cash refund or a brand-new unit may not align with the official remedy plan. However, if you have unique circumstances or if the inspection reveals additional issues, that conversation will take place directly with their customer service team. For now, your goal is simply to schedule the free repair. Do not attempt to fix this yourself. Installing flue components requires specialized knowledge to ensure a gas-tight seal and proper venting. A DIY fix could inadvertently worsen the carbon monoxide leak, putting your household at serious risk. Let the professionals handle the installation to ensure your family’s safety is fully restored.

What can happen if you ignore it

When a recall involves carbon monoxide, the stakes are fundamentally different from a defective toaster or a wobbly chair. Carbon monoxide is often described as the "silent killer" for very good reason: it is completely odorless, colorless, and tasteless. You cannot see it, smell it, or detect it with your normal senses. If you continue to operate one of the recalled ECR International boilers without addressing the missing flue inspection cover plate, you are essentially inviting an invisible threat into your home’s living space. The primary danger here is not a sudden mechanical explosion in most cases, but rather the slow, insidious accumulation of poisonous combustion gases within your residence.

The specific failure point identified in this recall is the absence of the flue inspection cover plate. This component is critical because it seals the pathway where exhaust gases should travel safely out of your home through the chimney or venting system. Without this plate, there is a risk that combustion byproducts—including carbon monoxide—can leak back into the boiler’s internal chamber and subsequently escape into the room where the unit is installed. Over time, as the boiler cycles on and off during normal heating operations, these gases can build up to dangerous levels. The severity of the exposure depends on factors like how long the boiler runs, the ventilation in your home, and how close you sleep to the unit, but the potential for harm is immediate and serious.

If left uncorrected, prolonged exposure to carbon monoxide can lead to symptoms that mimic the flu or food poisoning, such as headaches, dizziness, weakness, upset stomach, vomiting, chest pain, and confusion. Because these symptoms are subtle and often mistaken for common ailments, victims may not realize they are being poisoned until it is too late. In severe cases, high concentrations of carbon monoxide can cause loss of consciousness, permanent brain damage, or death. It is important to note that while the CPSC report currently indicates no reported incidents, this does not mean the risk is theoretical. The hazard exists by design flaw; an incident could occur at any moment for any user who fails to act.

Ignoring this recall also leaves your home environment compromised in other ways. Combustion gases include not just carbon monoxide, but also nitrogen oxides and other particulates that can irritate the respiratory system, aggravate asthma, or cause long-term lung issues with chronic exposure. Furthermore, a boiler that is leaking combustion gases may be operating inefficiently, wasting fuel and potentially leading to soot buildup that could pose a fire risk over time. The remedy offered by ECR International is straightforward: a free inspection and the installation of the missing cover plate. By delaying this repair, you are not saving time or money; you are gambling with the health and safety of everyone in your household for no tangible benefit. The window to prevent a tragedy is open now, while the fix is free and readily available.

Staying safe: broader tips

While this specific recall addresses a manufacturing defect in certain ECR International boilers, the underlying safety principles apply to any gas-fired heating system in your home. Carbon monoxide is often called the "silent killer" because it is colorless, odorless, and tasteless. You cannot see or smell it until symptoms like headaches, dizziness, or nausea set in. Therefore, relying on your senses alone is never a safe strategy for detecting dangerous gas leaks or combustion failures. The most effective way to protect your household is through proactive, layered safety measures that go beyond waiting for a recall notice.

First and foremost, ensure you have working carbon monoxide alarms installed in the right places. The National Fire Protection Association recommends placing these detectors on every level of your home, including inside each sleeping area and just outside sleeping areas. They should be mounted at the height recommended by the manufacturer—typically high on a wall or on the ceiling for CO detectors, as this gas is slightly lighter than air. Test them monthly and replace batteries at least once a year, or when you change your clocks for daylight saving time. If an alarm sounds, treat it as a real emergency: evacuate immediately and call 911 from outside the home.

Regular professional maintenance is equally critical. Gas boilers, furnaces, and water heaters produce combustion byproducts that must be safely vented outdoors. Over time, vents can become blocked by debris, nests, or snow, and internal components like heat exchangers can crack due to age or stress. An annual inspection by a qualified HVAC technician can identify these issues before they become hazardous. Ask the technician to check for proper draft, inspect the flue pipe for gaps or corrosion, and verify that all connections are tight. If you notice any signs of soot buildup around the appliance, unusual odors, or yellow flickering flames instead of steady blue ones, stop using the unit and call a professional immediately.

Finally, stay informed about product safety in general. Sign up for email alerts from the Consumer Product Safety Commission (CPSC) and other relevant agencies to receive immediate notifications about new recalls. Many people do not realize that they can register their appliances with the manufacturer after purchase; this is often the fastest way to be contacted if a defect is discovered later. By combining reliable detection technology, routine professional care, and active awareness of safety updates, you create a robust defense against the hidden dangers of gas appliances.