Heating repair in Baltimore

Air Conditioning & Heating

A Comprehensive Full Services Provider

 

A/C, Heat Pumps, Furnaces, Mini Splits, Boilers, Water Heaters

Heating Services in Baltimore including Repair

All-Air Systems is based in Baltimore and serves Baltimore and surrounding area. We provide the best heating and air conditioning services for existing and new customers in Baltimore. Our technicians receive continuing education and training in order to make sure that we schedule a technician for your service who will have the knowledge and experience to repair your heater in a timely manner that minimizes any disruptions to you.

Image of All Air Systems technician performing heating repair on furnace in Baltimore

Notice your heating not working?

Need heating service or repair?

You might be experiencing one of the following conditions:

 

1. A cold house.

2. Your heating system is not turning on at all.

3. The heating system fan is running but you have no heat in the house.

Looking for the best local heating service provider in Baltimore to repair or service your heating system?

All-Air Systems repairs all residential heating systems, including:

Heat Pump heating

There are several reasons why heat pumps are popular. First, they do not require fossil fuel to heat. They produce heating with the outdoor unit and its refrigerant. Instead of running in a/c mode, it reverses the direction of the refrigerant and sends the hot refrigerant to the indoor unit. When it gets really cold outside, the indoor unit has an electric heat element to help maintain the supply air temperature. Second, heat pumps can cool and heat very efficiently based on its efficiency rating.

Furnace heating

Unlike heat pumps, furnaces use fossil fuel to heat your home. They can use either natural gas, propane, or oil. Gas and propane furnaces are essentially identical in the way they produce heat. By contrast, oil furnaces have a different “burner” to introduce oil to a spark to ignite the oil creating heat. Moreover, because these systems use fossil fuel for heating, they typically produce a higher supply air temperature to your house.

Boiler heating

Some people confuse boilers with furnaces. There are a few differences. First, boilers don’t use a blower fan to send heated air through duct work for all areas of your home. Instead, they heat water and send the heated water through radiators that are placed in the rooms of your house. Second, there are several safety devices for the boiler heating systems to ensure that the fuel and water aspects of the system are operating normal and to shut the boiler off if it begins to operate outside of safe conditions.

Geothermal Heating

Geothermal heating utilizes refrigerant much like a traditional heat pump. However, the difference is that geothermal heating systems operate at much higher efficiencies. This higher efficiencies are achievable by utilizing the grounds ability to remove and absorb heat instead of relying on outside air temperatures like heat pumps.

Wall heaters

Wall heating can be electric or provide heating by using fuel. For example, the Rinnai wall heater is installed in pretty much any room. First, a gas line is installed and run to the heater. Then, the combustion gasses are expelled outside typically directly through the wall with a vent cap.

What could be wrong with your heating system?

The heating problem you are having needing repair depends in large part on the type of heating system you have. In Baltimore, you could have one or more of the different types of systems. Certain areas of Baltimore have more furnaces or boilers because there is a natural gas supply from the local utility. Other areas that are more remote tend to have heat pumps or furnaces and boilers that use propane or oil. Baltimore actually has a good mix of every type of heating system. We are trained and experienced in all types of heating systems. No matter what heating problem you are having, we will diagnose and repair the heating issue quickly so you can get back to more important things.

Types of Heating System Problems in Baltimore

Image to show reader a heat pump while reading about causes of no heat

Heat Pump heating

A few common examples of things causing your heat pump system from not heating requiring professional repair include:

1. Electrical problem

-Tripped or bad breaker

-bad electrical wiring or components

2. Low on refrigerant

-the system low pressure switch has shut down the system due to low refrigerant pressure that may be caused by a leak

3. Bad refrigerant circuit part

-this could include an inexpensive part or a high cost part such as a compressor.

Image to show reader a furnace while reading causes of no heating

Furnace heating

A few common examples of things causing your furnace system from not heating requiring professional repair include:

1. Electrical power supply problems

2. A bad component causing a safety to trip and preventing the furnace from running

3. A bad safety switch keeping the combustion cycle from starting or continuing

4. Problems with the fuel side, including:

-lack of fuel

-dirty fuel

-bad gas valve or bad oil burner components

Image to show reader a boiler while reading causes of a boiler not heating

Boiler heating

A few common examples of things causing your boiler system from not heating requiring professional repair include:

1. Electrical power supply problems

2. A bad component causing a safety to trip and preventing the boiler from running

3. A bad safety switch keeping the combustion cycle from starting or continuing

4. Problems with the fuel side, including:

-low on oil, dirty oil filter, lack of maintenance, bad burner pump

5. Bad water side components such as:

-zone valves, expansion tanks, reliefs, pumps

More on why heat pumps stop working

There are numerous reasons why your heat pump stopped working. But without over complicating things, in the simplest form, the causes can be split up into 2 problems.

The first is electrical. The second is mechanical.

Electrical

On the electrical side of things, each system has a electrical power side and a controls side. The power side is what is coming from your electric panel. In homes, this is the 120 or 208 volts AC that powers your outdoor and indoor units.

The electrical controls primarily consist of a lower voltage (typically 24 volts AC). Control signals can also be in the form of milliamps and volts DC. Special meters are required to read these signals.

Mechanical

On the mechanical side of things, are all of the moving parts including the physical components and refrigerant system. These are your fans, compressors, refrigerant piping, burners, valves, etc.

Electrical issues are caused by tripped, blown, or bad breakers or fuses. They are also caused by other faulty electrical wiring or parts such as transformers, circuit boards, capacitors, contactors, safety switches, etc.

Mechanical issues can be caused by usual wear and tear or wear caused by an abnormal condition. For example, fan motors can go bad because they are just old and have reached the end of their life. On the other hand, fan motors can go bad in a few years from repeat on and off cycles or because another part the motor relies on is going bad. In the latter case, the motor is forced to run without the help of the other part and therefore it runs under more extreme conditions. The worst enemies to a motor are excessive heat, dirt, and electrical surges and shorts.

Low on Refrigerant

Heat pumps can stop running because they are low on refrigerant. If the system lacks the proper amount of refrigerant then the low pressure switch can open the electrical controls circuit and thereby prevent the compressor from running. On the opposite side of that equation, if a condition is causing the refrigerant pressure to escalate when the system is running, the high pressure switch will stop the unit from heating or cooling.

Bad Safety Switches

Sometimes one of those pressure switches goes bad and sticks in the open position preventing the system from running despite having sufficient refrigerant. Sometimes the refrigerant levels are good, the switches are fine, but the compressor itself is bad. The compressor can be bad because the motor in the compressor is dead. This could be caused by bad electrical windings due to a short to ground or between its own windings. More often, the compressor is fine, but a part it relies on is bad or is weakening. This part could be a capacitor, a contactor, a circuit board.

Compressors

Compressors can also go bad or stop running due to refrigerant piping or refrigerant flow problems. For example, if a refrigerant pipe developed a blockage from either a kink in the copper piping or on the inside of the piping, then the compressor would not be properly cooled by the returning refrigerant and could be cycling off on high temperature protection. A metering device in the indoor coil could get blocked and this would cause a lack of refrigerant to the evaporator. In cooling mode, this would result in an overly superheated gas back to the compressor. The compressor would start overheating, and motors do not like excessive heat.

 

More on Why Furnaces stop working

Not to beat the same drum again, but furnace issues can be split into the same 2 problems as heat pumps. The only difference here is you are not dealing with refrigerant, but a fuel.

Its important to note that furnaces come in 3 main varieties based on the fuel they consume – natural gas, propane, and oil.

While the biggest difference lies between gas and oil, each system has similar protections due to the potential dangers involved with igniting and burning a fuel.

Combustion Cycle

The furnace has what is known as a combustion cycle. This cycle involves the process of introducing, igniting, and safely operating while heating. The cycle has safety switches built into the process that will open the control circuit should the combustion of the fuel deviate from normal parameters. Included in this is proper air flows, proper temperature ranges, proper response signals, proper flame detection, a lack of flame roll out, etc. As soon as a safety switch senses an abnormal reading, it will act to shut of the gas valve or oil pump, ignitor spark to prevent the furnace from operating outside of safe limits.

Safety Switches

The pressure switch confirms that the combustion fan motor is running to expel hot combustion gases outside. This prevents overheating the heat exchanger and putting harmful gases and carbon monoxide into the home.

The limit switches make sure the furnace doesn’t get too hot and start potentially causing a fire hazard.

The flame sensor senses that there is actually a flame. If it fails to sense a flame, its signal (or lack of a signal) will shut the gas valve off and prevent gas from being disbursed into the home.

The flame rollout switch senses when the flame is not being properly pulled into the heat exchanger. When the flames “roll out” and dance up the wall of the furnace, then the rollout switch will shut down the furnace.

Heat Exchangers

Cracked heat exchangers can cause flame rollout. This can be witnessed when the main air blower turns on and the flame begins to dance out of the heat exchanger openings. The main airstream is causing back pressure in the combustion side of the heat exchanger. This force can cause the flame to be pushed back into the burner chamber.

Control Boards

On furnaces in particular, ignition control boards and transformers can go bad as well. This prevents the furnace from sending and receiving proper signals to bring on the furnace fan or combustion cycle.

 

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