Is Your Furnace Leaking Water?

Posted by Ohio Heating

Dec 27, 2021 7:47:00 AM

If you have noticed that your furnace is leaking water, here is a list of the most common issues:  

There is a clogged drain. Condensation from air conditioning coils contains bacteria that can formfurnace repair ggl 21-1 slime and clog the drain.   


There is a condensation leak.  High-efficiency furnaces create condensation as they utilize cool exhaust and then blows it away from your unit. When the tubing is damaged, broken or not functioning correctly, this could be the cause of your leak.

Standard efficiency furnaces should not have condensation. A leak is particularly unusual and could indicate an improperly sized flue pipe. If this is the problem, then hot exhaust might be condensing in the pipe as it cools down.

To see if your furnace is high- or low-efficiency you can examine the vent pipe.  If the pipe is PVC (white plastic), then it’s a high-efficiency unit. If the pipe is metal it is a standard-efficiency furnace. 

The secondary heat exchanger is not functioning properly. The leak might be caused by the secondary heat exchanger. This repair can be expensive, so most customers decide to replace the furnace as opposed to repairing the exchanger.

There is a humidifier leak.  A humidifier that isn't working properly can cause water issues. If you’ve stayed on top of your annual HVAC maintenance, then this probably isn’t the issue because your service technician most likely would have noticed the problem. If you haven't had a furnace check in a while, schedule an appointment immediately. This type of leak could cause serious damage to your unit.

Internal drain system clog. A plug in the internal drain system that operates in both the air conditioning unit and the furnace, could be directing water into the furnace. 

Don’t ignore leaking water issues. Leaks can cause significant damage to your equipment, walls and flooring, and can also lead to harmful mold growth. 

It's important to inspect your furnace, heat pump or boiler system annually to insure it is safe and performing at its maximum level. Good preventive service keeps your equipment running at peak performance and reduces costly breakdowns. Schedule a furnace inspection now to insure your family's comfort and safety. Call 614-863-6666

When you need a furnace repaired, call Ohio Heating & Air Conditioning. Our highly trained technicians are NATE certified and fully bonded. Regardless of the make or model of your HVAC equipment, or whether or not it was installed by us, we can repair it for you.

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Topics: furnace repair, furnace leaking water

A Cracked Heat Exchanger is Dangerous

Posted by Ohio Heating

Oct 26, 2021 8:53:00 AM

Many homes in Central Ohio use a natural gas furnace to keep it warm and cozy. A gas furnace not only produces a large amount of heat, but it does so at a lower cost than electric furnaces ( since natural gas costs less than electricity per unit).   furnace repair new 2021

A well-maintained heating system helps homeowners avoid dangerous situations. Current furnace systems are built with your safety in mind, and have special features to keep dangerous gases such as carbon monoxide from seeping into your home. 

A cracked heat exchanger is a huge problem. If it is your heat exchanger is damaged, you cannot run your furnace, even though it seems to be running fine. The gases will continue to leak into your home's air and can be very dangerous.

What Is a Heat Exchanger?

The heat exchanger enables your furnace to heat the air that travels through its ventilation system. When the burners of the furnace ignite, they generate hot combustion gas, which is collected inside the heat exchanger. This is a metal chamber or series of chambers that typically resemble a clam-shell.

The hot combustion gas within the exchanger heats up the metal walls, and the blower fan of the furnace comes on and sends air around the exchanger, where it picks up heat from the furnace wall, then continues into the ductwork. This process uses combustion gas to heat the air without the gas ever coming into contact with that air.

Once the heating process is over, the combustion byproducts in the heat exchanger are vented out of the system through a flue, in order to release the gas harmlessly into the outdoor air.

Why Do Heat Exchangers Crack?

Expansion and contraction of the metal as it heats and cools causes stress that will eventually cause a crack to form. Corrosion, due to the reaction between the combustion gas and metal can also strain the metal to the point where it cracks.

Overheating causes many premature heat exchanger cracks. When a furnace cannot get enough airflow, the heat exchanger overheats and suffers excess stress from expansion and contraction.

These cracks are typically small and hard to detect. But when the exchanger expands with heat, the cracks open up and let some of the gases escape sending toxic gas into your home. 

Warning Signs

Examine the furnace for any corrosion or cracks on other components. This is also the sign of a problem.

Strange smells can indicate a malfunctioning heat exchanger. A strong and unpleasant odor similar to formaldehyde can cause headaches as well as other physical symptoms. If you smell anything similar to formaldehyde call a technician at once.

Listen for a clicking sound coming from the furnace as soon as the blower shuts off. This should always be investigated by a pro.

Unfortunately, heat exchangers cannot be repaired. When a heat exchanger cracks or rusts through it must be replaced. Because the heat exchanger is at the center of the furnace, nearly the whole furnace must be disassembled. 

Replacing a heat exchanger only solves part of the issue. It doesn't resolve the cause of the problem which is most often a furnace that is the wrong size or one that is not installed correctly. The best solution is to replace the whole furnace with a new properly sized and vented furnace that is properly installed. When you add up utility rebates, tax credits, factory rebates, and the energy savings of a properly sized furnace, a furnace replacement can actually be cheaper than repairing the old equipment.

Ohio Heating & Air has a full line of energy-efficient furnaces that can save you money on your fuel bills and our easy finance options make it easy to afford. Give us a call at 614-863-6666 to learn more.

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Topics: furnace repair, cracked heat exchanger

Is Your Furnace Blowing Cold Air?

Posted by Ohio Heating

Feb 19, 2019 10:28:34 AM

furnace repair What should you do if you suddenly realize your furnace is blowing cold air?  

Here are several steps to troubleshoot the problem with your furnace before you call a repair man.

1) Check the Thermostat. Be sure the thermostat is not set to ON.
If your furnace is blowing cold air only part of the time, it may be because the blower is constantly running. Check your thermostat. If your thermostat’s fan setting is set to ON, the furnace blower will constantly run even when your furnace isn’t heating the air. Turn your thermostat’s fan setting to AUTO. Only warm air should be coming through the vents now.

2) Check the Thermostat BatteriesAnother possible reason for your heater blowing cold air is the batteries in your thermostat. Some thermostats are connected to central power and some have central power with a battery backup. There are some thermostats that work on batteries only, so check your thermostat and replace your batteries accordingly. The batteries don’t need to be totally dead for your thermostat to malfunction. Improper temperature inputs from the thermostat can cause your heater to blow cold air.

3) Is the Furnace Overheated? Does your furnace blow warm air and then cold air but then stops blowing any air?  This is an indication that your furnace may be over heating. Your furnace has a safety device known as the limit switch. This turns the burners off if your furnace is too hot. The blower will continue to blow to cool the furnace down.

The most common cause of overheating is a dirty furnace air filter. The dirty air filter will block airflow, causing the furnace to run longer to heat your home until it overheats. Change the air filter and see if your furnace starts only blowing warm air. Repeated overheating will damage your furnace’s heat exchanger and replacing the exchanger can be expensive.

4) Check Your Pilot. Those with an electric heater can skip this step. Those with a gas furnace should check the pilot light. A pilot light is a small flame that is burning constantly to ensure that your heater can ignite easily. These can be blown out sometimes, usually from the gas company shutting down lines for maintenance or emergencies. 

Sometimes when you find your furnace blowing cold air, regardless of how handy you are, it may be easier and cheaper to call in a qualified professional. Furnace repair can be difficult. A licensed HVAC contractor will be able to diagnose and repair your furnace quickly. Do you need help in picking a qualified contractor? Check out these tips on how to choose an HVAC contractor:

How to Choose an HVAC Contractor

At Ohio Heating & Air Conditioning, we’re proud of the fact that all our technicians are NATE certified and we are fully licensed and bonded. Quality installation and service mean a longer life for your heating and cooling equipment and increased energy efficiency. 

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Topics: commercial HVAC contractor, furnace repair, furnace blowing cold air

Is Poor Home Insulation Causing Cold, Hard to Heat Rooms?

Posted by Ohio Heating

Feb 20, 2017 2:00:00 PM

If you and your family are suffering from cold hard to heat rooms, the problem may not be your HVAC system. It may be your home's insulation. The most efficient heating system can't function properly if the home doesn't have enough insulation for maximum energy efficiency. You should effectively insulate your home from the roof to the foundation. Places for home insulation are: unfinished attic space; finished attic rooms; all exterior walls; floors above cold spaces; band joists; and storm windows.


Attic Insulation

Loose-fill or batt insulation will typically be installed in at attic, where loose-fill is less expensive and offers better coverage.

In order to determine if you have enough attic insulation, measure the insulation’s thickness. More insulation may be added if it is measured less than R-30, which is 11 inches of fiberglass or rock wool or 8 inches of cellulose.

Vertical walls with attic space directly behind them may be insulated and air sealed. If you are remodeling or are building a new home, be sure that any attic decking, which provides additional storage space or is used as a platform for an HVAC system or a hot water tank, is raised above the ceiling hoists to have space for effective insulation. A radiant barrier may be installed to decrease summer heat intake if you live in a hot or warm environment.

Duct Insulation

Be sure to seal and insulate ducts if they are installed in unconditional space.Ductwork defects can cause lots of problems. A typical home has about 20 to 30 percent of the air that moves through the system lost due to leaks, holes, and poorly connected ducts.

Cathedral Ceiling Insulation

Ceiling temperatures will be similar to room temperatures if cathedral ceilings are properly insulated; thus a balanced temperature will be distributed throughout the house. Space between the roof deck and the house’s ceiling must be available in cathedral ceilings for proper insulation and ventilation, which can be obtained by using truss joints, scissor truss framing, or large rafters.

Hot roof designs permit greater insulation to be installed in the roof cavity as vent space is no longer needed. The roof cavity is required to be completely air sealed from the conditioned space below to avoid moisture accumulation and roof degradation. Ceilings that do not have attics are frequently insulated with foil-faced batt because it generates the appropriate permeability rating. To maintain ventilation, a vent baffle needs to be installed between the insulation and the roof.

Rigid foam insulation may be applied beneath the rafters to add R-value and to prevent thermal bridging through wood rafters. Rigid insulation needs to be protected with a fire-rated material, such as half-inch drywall, when applied inside of a building

Exterior Wall Insulation

You may need to add insulation to your exterior walls if your house is too cold in the winter and too warm in the summer when the attic has been properly insulated and air sealed. Exterior wall insulation can become expensive but is beneficial if living in a cold environment. Insulation can be added simultaneously when replacing exterior siding

Blow-in insulation may be used on an existing house to offer adequate air sealing when installed using the dense pack method. This may be added to the house’s exterior walls without interruption to already finished areas.

Insulated panels, insulated concrete forms, and insulated concrete blocks can all be applied to existing houses because they have built in insulation. Houses that use these insulation materials have exceptional insulating capabilities with minimal thermal bridging.

Using insulating wall sheathing instead if wood sheathing materials will provide higher R-values.

Insulating Floors above Unheated Garages

All possible leaking areas must be sealed when insulating floors located above unconditioned garages. This is beneficial because the danger of contaminants in both the garage and the conditioned space is reduced. An air barrier can also be installed to avoid short circuiting the insulation beneath the sub floor from cold air entering.  

Foundation Insulation

An adequately insulated foundation will keep both heating costs low and rooms which are below-grade more comfortable while preventing moisture issues, insect infestation, and radon infiltration.

Basement Insulation

Effective basement insulation will reduce heating costs and will prove comfort without moisture. The following guidelines should be followed when installing basement insulation:

For new construction:

  • Minimize thermal bridging and heat loss
  • Protect the damp-proof coating
  • Reduce moisture/condensation accumulation
  • Reduce interior temperature fluctuation
  • Conserve room space

For existing houses:

  • Install interior insulation rather than exterior.
  • Insect infestation will be prevented.

Consider these guidelines when installing interior basement wall insulation:

  • Insulation often requires a fire-rated covering
  • Interior space will be decreased by several inches
  • Damp-roof coating will not be protected
  • Insulation may moisten if exterior drainage is ineffective
  • Excellent air-sealing details with vapor diffusion retarders are crucial

For R-values for basement walls, consider the following:

  • Blanket insulation
  • Insulating concrete blocks
  • Foam board insulation
  • Insulating concrete forms
  • Loose-fill insulation
  • Sprayed foam insulation

Moisture prevention is significant for basement insulation in order to prevent water accumulation, humidity, and mold.

Slab-on-Grade Insulation

An insulated slab will be easier to heat, and temperature can be easier to gauge when placing the slab’s mass within your house’s thermal envelope. Insulating the slab’s exterior may reduce heating costs by 10% to 20%. 

Ohio Heating & Air Conditioning has the knowledge and resources to help you solve your heating and cooling problems. From cold, hard to heat rooms to improving your indoor air quality, we have become a leading heating and cooling company Columbus OH and Central OH.

With Bryant as our marque line of equipment, we are able to offer competitive prices on custom systems. They have awarded us their highest certification as a Bryant factory authorized dealer.

From a basic furnace or thermostats to a high end, energy efficient system with zone control, we have an intelligent indoor climate solution that's right for you and your budget.

Ohio Heating & Air Conditioning can provide complete services for you and your family. Whether for repair, maintenance, installation or replacement, choose Ohio Heating & Air Conditioning. We have the experience to meet all of your heating and cooling needs. Complete customer satisfaction is one of our top priorities. We can deliver the quality and comfort your family deserves.

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Topics: ductwork defects, duct insulation, furnace repair, Home Insulation

What to Expect from Your Ohio Heating & Air Conditioning Service Call

Posted by Ohio Heating

Feb 11, 2017 11:42:41 AM

Superior Service for Our Customers! 

troubleshootingIf you've scheduled an appointment with Ohio Heating & Air Conditioning for service or repair of your existing equipment or to discuss replacing or upgrading an old system, you've chosen wisely.
We are known for great service and a reputation for doing Whatever It Takes® to keep you and your family safe and comfortable.
Here's what to expect during an appointment or service call with Ohio Heating & Air Conditioning:
  • We will arrive at your home at the scheduled time of your appointment. If the tech will be late, someone from our team will call you in advance to let you know or reschedule.
  • When the technician gets to your home, he will likely want to inspect your existing system to understand the unique details and situation of your home. In doing so, access to all areas of your home—from rooms to crawl spaces, attics, etc. may be required.
  • The service technician might ask you several questions about your existing system. You may want to prepare in advance for these questions by using our pre-service checklist.
  • You will also likely be asked questions about your family's special heating, cooling and air quality goals and needs.
  • Once the meeting has ended, if a follow-up meeting is needed for further discussions or service, you can expect someone from our team to get back in touch with you right away.

Ohio Heating & Air Conditioning takes your safety and comfort very seriously. We are a Bryant Factory Authorized Dealer, our technicians are Nate Certified and we are licensed and fully bonded. Our team is focused on finding the best solutions for your family and budget. From furnace repair to upgrading to a high efficiency system, Ohio Heating & Air Conditioning is the contractor to call.  

We service all makes & models

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Topics: service call, service call check list, furnace repair

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