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The most common type of home heating system is a forced-air heating and cooling system. This type of heater involves a furnace, which is commonly powered by natural gas, forcing air through a series of ducts that distribute the hot air through different rooms in a house. Furnaces can run on other types of fuel, including electricity, propane and oil. This type of heating system is quite popular because it doubles as a path for air conditioning in the summer.

An air conditioner leaking inside the house is a common problem. It could indicate that the air filter is dirty. Or, one of the following may be the culprit:

• Clogged condensate drain line
• Leaky, damaged, cracked or rusted drain pan
• Dirty or broken coils
• Frozen evaporator coils
• Broken condensate pump
• Not enough refrigerant
• Disconnected drain line

If your AC is leaking, contact a repair service to find out what the problem is — and how much it will cost to fix it.

Geothermal heating tends to be the most efficient way to heat a house when compared to traditional HVAC systems, according to the U.S. Department of Energy. Geothermal heat pumps (also called ground-source heat pumps) transfer energy to and from the ground to supply heat, cool air and hot water.

Note that one of the most important ways to boost efficiency, save electricity and lower your heating bills is to make sure your house is weather-tight and well-insulated.

The national average dryer vent cleaning costs range from $190 to $260. Dryer vent or duct cleaning costs can vary based on where you live in the country and what ductwork repairs may be required. Duct cleaning pros will use a brush cleaning method, a forced air vacuum, or a combination of the two to remove lint and other debris that can collect in your dryer duct, lint trap housing and vent. If left unchecked, this buildup of highly flammable debris can catch fire and lead to a home fire, says the U.S. Consumer Product Safety Commission. In addition to home safety, a great reason for regular cleaning is the money you’ll likely save on energy bills and improved indoor air quality. Pros may offer a lower rate on their dryer duct cleaning costs when you also hire them to clean your entire HVAC duct system. To ensure you’re working with a pro who will keep your home as safe as possible, read their reviews and check whether they have been certified by a reputable organization such as the National Air Duct Cleaners Association (NADCA) or the Chimney Safety Institute of America (CSIA). Many duct cleaning pros will also show you before-and-after photos as proof of the cleaning.

If you’re concerned about dust, allergens or mold, it may be time to have your air ducts cleaned. The national average cost for air duct cleaning ranges from $190 to $250. Air duct cleaning costs will vary based on a number of factors such as your location in the country, the age and condition of your air ducts, the number of linear feet to be cleaned, and any repairs your ducts may need. HVAC cleaning companies should clearly outline what is included in their services and at what rate, so always make sure you understand and have a written agreement before work begins. Here are some examples of average air duct cleaning costs:

• Tiered pricing for different levels of service:
• Standard cleaning: $100, which may include truck-mounted industrial vacuums, high-pressure air wands and air snakes to clean all supply and return vents, branch lines, and main trunk lines.
• Advanced cleaning: $200, which may include standard cleaning services, plus rotobrush or viper clean sweep in the main trunk lines.
• Ultimate cleaning: $400, which may include advanced cleaning, plus insertion of a viper microline into all vents to force debris down the branch lines and into the main trunk lines, to be handled by the viper clean sweep. Typically, all ductwork surface is contacted, before-and-after photos are provided, and the furnace is cleaned.
• A flat rate for unlimited vents: $289.
• Additional fees for larger houses: $20 for each additional 500 square feet over 2,500.

Many experts say a heating system should be serviced at least once per year. Specifically, the best course of action is to service a heating system in the fall before colder weather arrives. And, you should get your air conditioner serviced in the spring before the weather heats up. 

It’s especially important to hire a professional to perform repairs whenever you hear strange sounds, such as clanking, knocking or banging.

The better care you take of your heating system, the longer it will last. The International Association of Certified Home Inspectors estimates the following lifespans for heating systems:

• Heat exchanger: 10-15 years
• Heat pump: 10-15 years
• Furnace: 15-25 years
• Electric radiant heater: 40 years

If your heating system is broken, hire a contractor or a repair service to take a look at it. They can help you determine if it makes financial sense to replace your system or spend money on repairs. The good news is that replacing your old furnace will give you the opportunity to take advantage of newer, more efficient furnaces that can save you money on heating bills from the first cycle. 

In a hot water baseboard heating system, a boiler heats water and then the water passes through the system’s pipes and into the baseboard radiators in your home. Baseboard heating systems are generally quiet, and you’ll experience less heat loss when compared to a forced-air system. However, you can’t use radiant basement heating for cooling purposes.

Here’s how duct cleaning works in a nutshell:

• A professional duct cleaner will inspect your ducts.
• They’ll use vacuums and brushes to clean up dust and debris.
• And then they’ll seal and clean everything up. 

During the inspection process, the air duct cleaner will also look for cracks or leaks. Depending on what they find, they may also recommend repairs.

To learn more about the duct cleaning process for your home, reach out to cleaners near you.

Air duct cleaning is the process of cleaning your various heating and cooling system units, parts and components. This process often includes cleaning the following, according to the EPA:

• supply and return air ducts and registers
• grilles and diffuser
• heat exchangers heating and cooling coils,
• condensate drain pans (drip pans)
• fan motor and fan housing
• air handling unit housing

For a more specific list of tasks, ask duct cleaners near you what's included in their service.