Why is My Boiler Leaking Water? Here’s What to Check

So, your boiler is leaking water. This is probably the last thing you need today, so let’s get to the bottom of the issue. A leaky boiler can cause severe water damage, further disrupting your routine and draining your wallet.

Total Comfort’s heating experts are here to help. Promptly addressing your boiler leak will spare you all sorts of headaches. Below, we’ll tell you where to look and what to do once you’ve found the problem. 

4 Things to Check When Your Boiler is Leaking Water

There are four main culprits when your boiler is leaking water. You’ll want to inspect these before moving on to other potential sources. 

1. Boiler Pressure

If your boiler is dripping water from a pipe, then your boiler pressure is probably too high. Tiny drips are nothing to worry about, but puddles and large streams are cause for concern. If your boiler’s gauge needle points to red instead of green, you’ll need to contact Total Comfort’s professional boiler service. 

2. Loose Joints or Fittings

Temperature fluctuations make your boiler’s pipe fittings, valves, tubes, and other parts expand and contract. This movement might loosen the system’s joints and fittings. Check that every boiler pipe and tube is covered. If a boiler pipe is leaking, give it a quarter turn. If this doesn’t work, contact the experts. 

3. Damaged Seals and Gaskets

Your boiler’s expansions and contractions can also crack its gaskets and harden its seals. These parts are essential to preventing leaks. If you think your boiler’s seals and gaskets are broken, your boiler pressure may be too high. 

4. Corrosion

Older boilers are more prone to rusting, which can lead to significant issues over time. One of the most common causes of a leaking boiler tank is rust buildup, as it gradually weakens the metal and compromises the unit’s integrity. Continuous exposure to fluctuating temperatures accelerates wear and tear on essential components, increasing the risk of costly and irreversible damage. 

If a boiler becomes heavily corroded, replacement is the only viable solution to ensure safe and efficient operation.

Other Potential Reasons Why Your Boiler is Leaking Water

If you checked the previous four issues but water is still leaking from your boiler, here are some other fixtures to inspect.  

Corroded Pressure Valve

Over time, the pressure valve in your boiler can deteriorate or become damaged, leading to water leakage. To resolve this issue, you can try tightening the valve or replacing it. However, for proper installation and to prevent potential risks, it’s best to seek professional boiler repairs.

Malfunctioning Temperature and Pressure Relief Valve

Your boiler’s temperature and pressure relief valve regulate water pressure and prevent the boiler from exploding. If this valve seems broken, contact Total Comfort’s emergency heating repair team immediately. 

Damage Blowdown Valve

Blowdown valves drain dirty water from boilers. Damaged blowdown valves will force dirty water to collect in your boiler tank and potentially leak. Regular heating tune-ups can prevent these issues. 

What to Do When Your Boiler Leaks Water

If you notice your boiler leaking water, don’t panic—handling a boiler leak is simpler than you might think. Follow these steps to minimize further damage and help reduce repair costs.

1. Immediate Clean-Up: If you have a mop, use this to absorb and remove puddling water. Then, place a bucket under the leak if possible. Throwing towels around the leak can prevent excess water from sinking into your floor, walls, and foundation. 
2. Raise or Lower the Water Pressure: If your water pressure is too high, adjust it accordingly. If the leak persists, you’ll need to contact a pro. 
3. Call a Professional: Quickly secure heat and comfort back in your home with Total Comfort. Our experts will recommend repairs or replacements depending on the severity of the leak. 

Is a Leaking Boiler Dangerous?

A leaky boiler does not put you in immediate danger. But failing to address a boiler leak can lead to larger issues, such as water damage and mold growth. Consistent leaks can weaken your foundation, sink into drywall, and spread unpleasant odors throughout your home. 

How to Fix a Leaking Boiler in 4 Steps

If your boiler is still leaking water, it’s important to act quickly. Follow these steps before reaching out to Total Comfort’s expert boiler service:

1. Shut off the water supply – This helps prevent any further water damage.
2. Drain the remaining water – Run a tap to empty your boiler completely.
3. Review your insurance – If the leak has caused significant damage, review your policy to see if you’re covered.
4. Inspect your pipes – Look for any signs of corrosion or blockages that might have contributed to the leak.

When you’re ready, contact our experts for boiler repairs or a full replacement.

How Do I Know If My Boiler Needs Repair Or Replacement?

You’d think replacing your boiler would always be more expensive than repairing it, but this isn’t the case. An old or cracked boiler should typically be replaced rather than repaired. This is because older boilers often have costly replacement parts and are less efficient than newer systems. 

Installing a new boiler will likely lower your water bill and provide several years of problem-free heating. An HVAC technician can advise you after a boiler leak, helping you make the right choice for your comfort and financial well-being. 

Preventative Maintenance For Boiler Leaks

Most boiler leaks are preventable. When you schedule regular boiler maintenance and consistently check your water pressure, you avoid common pitfalls like corrosion and heat exchanger failure. 

We recommend having your boiler inspected annually. A yearly check-up catches minor problems before they become huge disasters. Avoiding major leaks and failures can greatly extend your boiler’s lifespan. 

FAQs

Who to Call For Boiler Repair & Replacement Services

A leaky boiler can severely disrupt your routine. No one wants to struggle with uncomfortable and cold temperatures in Minneapolis & St. Paul. When you need comfort in your home, contact Total Comfort.

Our HVAC experts have helped homeowners like you solve boiler leaks since 1956. We are a locally owned company, bringing exceptional service and 100% satisfaction guarantees to our neighbors in the Twin Cities. 

If your boiler is broken, you deserve affordable heating repair and replacement options. We have several financing options for new HVAC systems, so give our team a call today. We’d love to help you fix a boiler leak for good.