Furnace Repair

Turn to Our Experts for Furnace Repair in Buffalo Grove

Providing Quality Service in Mount Prospect area


Fixing Broken Furnaces in Buffalo Grove and Northbrook Since 2005

Are parts of your home unnaturally chilly? Is there something banging and groaning behind your walls in the middle of the night? Before you call the Ghostbusters, it might be a good idea to reach out to a local furnace repair company. These signs are often experienced by people with a heating problem. And, in most cases, they can be solved by an experienced HVAC technician. To learn more about furnaces and what it takes to fix them, read on.

Give us a call at (847) 722-0000 to schedule residential heating repair in the Northbrook and Buffalo Grove area.

Signs Your Furnace in Buffalo Grove Has a Problem

There are times when something goes wrong in the heating process. Though this sometimes leads to an obvious problem—a complete furnace breakdown—this isn’t always the case. Much of the time, the signs you need to call a Buffalo Grove HVAC contractor are much more subtle. To prevent big problems from snowballing into larger ones, it’s important to be on the lookout for the following:

  • Weird Smells: When you first turn your furnace on for the year, you might notice a musty smell. This is typically dust burning off that settled over the months your furnace sat idle. This will dissipate as the unit operates and isn’t anything to be concerned about. If you notice an odor that suddenly appears or refuses to go away, however, it’s time to call a Buffalo Grove HVAC professional.
  • Odd Noises: Is your furnace banging or making some other kind of noise? This can be the result of numerous issues with the unit and is best diagnosed by a heating repair expert. Call (847) 722-0000 to schedule a furnace repair in Buffalo Grove and Northbrook .
  • More Service Calls: Every furnace in the Northbrook or Buffalo Grove area will have a part fail and need service in its life. In fact, one out of four people in the US will have an HVAC technician in their home each year. But if you’re making multiple calls in a heating season, it’s a sign you’ve been propping up a system that is aging out. Note that service calls don’t include preventative furnace maintenance visits.
  • Climbing Utility Bills: There are many reasons your electric or gas bills can rise. Cooler temperatures are an obvious reason. But, if your fuel usage suddenly increases dramatically, you probably should have our Buffalo Grove HVAC experts take a look. This increased cost often indicates a furnace that's being pushed past its limit.
  • Visual Rust: While some amount of rust is expected with age, excessive amounts—especially on the flue—can be a sign of improper venting. If a roof or plumbing leak is causing furnace corrosion, it’s not just an eyesore. It can be dangerous. If the system rusts through to the heat exchanger, your home could be contaminated with deadly carbon monoxide. So, if you notice an issue with furnace rust, give Master Mechanical a call.
  • Frequent Cycling: If your furnace is constantly turning on and off, there’s something stopping the unit from working properly. Unfortunately, this can be difficult to diagnose due to a variety of potential causes. To get the problem located and fixed quickly, rely on our Buffalo Grove heating repair experts.
  • Start-Up Problems: Does your furnace not turn on when it drops below the indicated temperature on your thermostat? Are you hearing clicking noises on start-up? These issues often signal an upcoming furnace breakdown. So, if you ever notice them, reach out to Master Mechanical by phone or form.

Fortunately, no matter the scope or size of the problem, Master Mechanical can handle your residential furnace repair. Though we do most of our work in Wheeling, Northbrook, and Buffalo Grove, we are also well known and trusted throughout the surrounding areas.

The Top 5 Causes of Furnace Failure

It’s important that homeowners understand what parts of their furnace are most likely to fail. This can better prepare them to communicate with us about their heating problems. It also allows us to quickly fulfill your heating repair needs in Mount Prospect area. When fixing heating systems in Buffalo Grove, we often find the following culprits, some of which can save you a service call:

  1. Clogged Filters: When was the last time you swapped out your furnace filter? If the answer is more than a few weeks ago, it might be time to check it, especially if you have pets. When running, your heating system pulls in dust, dander, and dirt. This is kept out of the mechanical parts by your furnace filter. A clogged filter restricts airflow, making your heating system work harder. Replacing it not only helps efficiency, but also improves air quality.
  2. Bad Thermostats: Your thermostat is responsible for signaling your furnace when to turn off and on to maintain the set temperature. If it’s not working properly, you’ll struggle to get warm. For instances where the thermostat may be at fault, make sure its batteries are good, if it uses any. Also, double-check that it is set to HEAT with the run method on AUTO.
  3. Ignition Failure: Sometimes the pilot light or surface ignitor will fail and refuse to light the burners. If this happens your furnace won’t be able to heat the air, leaving you in the cold. To prevent this, have it checked and cleaned regularly by our Buffalo Grove-area HVAC professionals. If it's the middle of winter, though, just give our Buffalo Grove HVAC contractors a call at (847) 722-0000 instead.
  4. Exhaust Blower Issues: The furnace exhaust blower is what takes the combustion gases out of the heat exchanger and vents it safely outdoors. If this component fails, the furnace will cycle on and off or shut down. Regular inspections and maintenance visits can prevent this from happening.
  5. Blower Motor Failure: The blower motor is essentially what keeps the air moving around your home. Should this component fail, it doesn’t matter how efficient your furnace is, the hot air won’t be distributed around your home. The blower can fail from overheating or from it becoming clogged with debris. Have your ducts cleaned and your furnace tuned up to keep the blower working effectively.
  6. Bad Heat Exchanger: The heat exchanger is one of the most important components of a conventional furnace. It is the component that safely transfers heat from the flame into heated air that is circulated in the home. When the heat exchanger develops holes or cracks, replacing it can be quite expensive. Some people prefer to simply replace their furnace. An expert evaluating your system can best advise you. If the stress on your heat exchanger is due to excess cycling due to having too large of a furnace, only replacing the heat exchanger will result in the same problem developing again.

Fortunately, we can handle all of these issues and more! Master Mechanical is your trusted partner for furnace maintenance and repairs in Buffalo Grove. Don't let a need for Buffalo Grove furnace repair ruin your day. Contact us at (847) 722-0000 instead.

Trust Us to Tackle Your Furnace Problems in Buffalo Grove or Northbrook

When it comes to furnace repair in Buffalo Grove or Wheeling, we know you have plenty of HVAC companies to choose from. However, not all of them are equal.

When you need your furnace repaired or replaced, trust the experts at Master Mechanical! As our long list of happy customers shows, many of your neighbors already do! With 21 years of experience helping people in the Buffalo Grove area, we have the know-how necessary to fix your broken furnace or replace the old one. No matter what you need, our company has well-defined services and procedures to ensure the job's done right. In other words, when it comes to furnace repair, you can always count on Master Mechanical for quality products and workmanship. Contact us today to schedule your furnace repair in Buffalo Grove.

Frequently Asked Furnace Repair Questions

Why isn’t my furnace reaching the temperature I set?

If your furnace in Buffalo Grove isn’t keeping up with the thermostat, several issues could be at play. The most common is a clogged air filter that’s restricting airflow and lowering efficiency. Other potential reasons include:

  • An old or failing furnace
  • A malfunctioning thermostat
  • Blocked or closed vents
  • Problems with the pilot light or flame sensor

For expert help, contact Master Mechanical today.

When your furnace in Buffalo Grove blows cold air, it might be due to something simple or more complex. Start by checking your thermostat to ensure it’s set to heat. If the thermostat isn’t the issue, the problem could be with the flame sensor or ductwork leaks. Our technicians can quickly diagnose and fix the problem for you.

Furnace repair costs in Buffalo Grove vary based on the issue. Smaller problems like sensor replacements can cost as little as $100, while major repairs like heat exchanger replacements may cost thousands. Most standard repairs range between $300 and $800. Older systems tend to have more expensive issues, so regular maintenance is key.

Before contacting a professional for furnace repair in Buffalo Grove, check these items:

  • Replace dirty air filters
  • Confirm your thermostat is set correctly
  • Ensure the pilot light is lit
  • Verify the furnace circuit breaker hasn’t tripped
  • Open any closed air vents

If these steps don’t solve the problem, call Master Mechanical for professional assistance.

If your furnace in Buffalo Grove is making unusual noises, it’s likely due to a mechanical issue. Common causes include:

  • Dirty burners causing booming sounds
  • Cracked heat exchangers making popping noises
  • Faulty blower motors buzzing or grinding
  • Loose screws or bolts rattling during operation
  • Expanding or contracting ductwork

Ignoring these noises could lead to further damage. Contact (847) 722-0000 to schedule a repair.

Some signs it’s time to call for furnace repair in Buffalo Grove include:

  • Persistent burning smells
  • Thermostat error codes
  • The furnace cycling on and off frequently
  • Weak airflow or no heat
  • Unusual popping or banging noises
  • A sudden increase in energy bills

Contact (847) 722-0000 to schedule a repair if you notice these issues.

Water leaking from a furnace might seem odd, but newer high-efficiency systems often create condensation. Common causes include:

  • Clogged condensation drains
  • A damaged heat exchanger
  • Faulty condensate pumps
  • Air conditioner or humidifier issues

Leaking water can damage your furnace, so call (847) 722-0000 to address the problem right away.

Older furnaces in Buffalo Grove may have a standing pilot light that occasionally goes out. To safely relight it:

  1. Turn off the gas and wait five minutes.
  2. Adjust the gas valve to “Pilot” and press the reset button.
  3. Use a long lighter to ignite the flame.
  4. Once the light is steady, release the button and turn the valve to “On.”

If it doesn’t stay lit, contact Master Mechanical for assistance.

A cracked heat exchanger is a serious safety issue for furnaces in Buffalo Grove. It can cause incomplete combustion, allowing carbon monoxide—a deadly gas—to leak into your home. Replacing a heat exchanger is costly, so it’s often more economical to replace the entire furnace. Our experts can assess the best option for your home.

If your furnace seems to be running endlessly, it’s likely due to a thermostat malfunction, clogged air filters, dirty flame sensors, or an obstructed flue. These issues waste energy and can overheat your system. Call (847) 722-0000 for fast diagnosis and repair.

A cheap furnace repair might seem like a good deal, but it often leads to problems like:

  • Inferior parts that fail quickly
  • Incomplete system inspections
  • Unskilled technicians
  • Pushy contractors recommending unnecessary replacements
  • No warranty on the work

Choose Master Mechanical for reliable, high-quality furnace repairs.

At Master Mechanical, we repair all major furnace brands in Buffalo Grove, including Lennox, Carrier, Trane, and Goodman. No matter the make or model, our experienced technicians know how to diagnose and fix any issue your system might have.

Loud furnaces are often due to high fan speeds, unbalanced ductwork, or obstructions. Start by lowering the blower fan setting, if possible. If that doesn’t work, call (847) 722-0000 to adjust the system for quieter operation.

Strange smells from your furnace in Buffalo Grove can be caused by:

  • Burning dust during startup
  • Mold or mildew in the system
  • Electrical burning from a short circuit*
  • Rotten egg smells from a gas leak*
  • Grime in the heat exchanger

If you smell gas or burning, turn off your furnace and call (847) 722-0000 immediately.

Routine maintenance is key to extending your furnace’s lifespan. Schedule annual tune-ups with Master Mechanical, replace filters regularly, and address minor issues like strange noises or thermostat problems before they worsen. Preventative care helps avoid costly repairs.

If your furnace clicks on and off repeatedly, it might be time to clean the flame sensor. Here’s how:

  • Turn off power and gas to the furnace
  • Locate the flame sensor near the burner
  • Remove the sensor and clean it with fine-grit sandpaper
  • Replace the sensor and restore power

If you’re uncomfortable doing this, call Master Mechanical for help.

While minor fixes like changing filters are fine for DIY, most furnace repairs should be left to professionals. Furnaces involve electrical, gas, and mechanical components, making them potentially hazardous. For safe and effective repairs, contact Master Mechanical.

Proof We’re the Best HVAC Company Straight From Our Customers

  • Mini-Split Installation That Exceeded Expectations
    Gwen Anderson
    Jake is amazing! We reached out to get a quote for a mini-split system to cool our server room, and Jake exceeded our expectations. He recommended a more cost-effective solution that has provided us with incredible results. His out-of-the-box thinking and thoughtfulness are so impressive. I had six other HVAC companies provide quotes, but Jake was the only one who made sustainable and well-considered suggestions. The office staff is also super friendly and helpful!
  • Came Right on Time for Our
    Dominique Haffery
    We just had Master Mechanical service our AC units before it gets too hot! This way we know they are operating efficiently! I used to be scared to pay money for these things but it truly saves money in the long run! Master Mechanical was able to come out quickly, give me a shorter window then most companies do in this trade, came right on time, communicated the whole way! They are professional and experts at their craft! Highly recommend!!!
  • A Great Company for Complicated HVAC Problems
    Eric Williams
    Jake did an excellent job helping me solve a complex problem that no one else could help with - I needed a new thermostat installed for a unique 120V water chiller AC system, and all other HVAC companies refused to work on it. Jake was on time, friendly, informative, and had it done in less than an hour. Highly recommended!
  • Saved $1000 With a Second Opinion on AC Repair
    Kris
    I’m glad I called Master Mechanical for a second opinion. They saved me $1000 over the quote for the same repair from another HVAC company. They were professional on time and fixed my unit same day. They also weren’t pushing upsales. They did let me know my options, but unlike the other company, Master Mechanical didn’t try using scare tactics to get me to buy additional services. Master Mechanical will be my first choice going forward and I’ve already recommended their services to family members as well.
  • Repaired My Boiler Instead of Pushing an Unnecessary Replacement
    Kathleen Ferraro
    I am so grateful to Master Mechanical for repairing my old boiler. Danny Chee is very knowledgeable and was able to figure out the problems and repair them. Plus he is a very nice, polite person. He made sure everything was working correctly before leaving, even after 5:00. The people on the phone, Paul and a woman whose name I can't recall, are professional and helpful. I received texts and emails confirming appointments and letting me know when Danny was on his way. They could have sold me a new boiler but instead fixed the old one at a fraction of the cost. I highly recommend them and will continue to rely on them in the future.