How does a central air conditioner work?

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What should I expect from an Air Duct Cleaning service provider?

If you choose to have your ducts cleaned, the service provider should:

• Open access ports or doors to allow the entire system to be cleaned and inspected.
• Inspect the system before cleaning to be sure that there are no asbestos-containing materials (e.g., insulation, register boots, etc.) in the heating and cooling system. Asbestos-containing materials require specialized procedures and should not be disturbed or removed except by specially trained and equipped contractors.
• Use vacuum equipment that exhausts particles outside of the home or use only high-efficiency particle air (HEPA) vacuuming equipment if the vacuum exhausts inside the home.
• Protect carpet and household furnishings during cleaning.
• Use well-controlled brushing of duct surfaces in conjunction with contact vacuum cleaning to dislodge dust and other particles.
• Use only soft-bristled brushes for fiberglass duct board and sheet metal ducts internally lined with fiberglass. (Although flex duct can also be cleaned using soft-bristled brushes, it can be more economical to simply replace accessible flex duct.)
• Take care to protect the duct work, including sealing and re-insulating any access holes the service provider may have made or used so they are airtight.

Please contact us today for a Free Estimate for all your Solar Energy needs

You've come to the right place for all of your Solar Energy needs, including Solar Hot Water, Solar PV Electric Power, & Solar Pool Heating Systems. We are members of CanSIA (Canadian Solar Industries Association). Our products meet all the standards and come with warranties. Our installation teams are well trained.  You can relax knowing that you're dealing with professionals.


There are so many different reasons why people go solar.  Some families like to take control of their energy future and be protected from volatile utility prices.  Others don’t like paying so much to the utility companies each month with nothing to show for it.  Because a solar system will pay for itself multiple times during its lifetime, going solar can be one of the best investments a homeowner will ever make. 


In addition to the financial benefits, some people harvest the sun because it enables them to harvest a free and abundant source of energy instead of using fossil fuels, which are quite costly and have a limited supply.  Others go solar because harvesting the sun is truly green, benefiting the earth’s natural climate, air, and water quality.

We make your life comfortable

Cambridge Heating and Cooling receives excellence award

Duct Cleaning

Deciding Whether or Not to Have Your Air Ducts Cleaned
Knowledge about the potential benefits and possible problems of air duct cleaning is limited. Since conditions in every home are different, it is impossible to generalize about whether or not air duct cleaning in your home would be beneficial.

If no one in your household suffers from allergies or unexplained symptoms or illnesses and if, after a visual inspection of the inside of the ducts, you see no indication that your air ducts are contaminated with large deposits of dust or mold (no musty odor or visible mold growth), having your air ducts cleaned is probably unnecessary. It is normal for the return registers to get dusty as dust-laden air is pulled through the grate. This does not indicate that your air ducts are contaminated with heavy deposits of dust or debris; the registers can be easily vacuumed or removed and cleaned.

On the other hand, if family members are experiencing unusual or unexplained symptoms or illnesses that you think might be related to your home environment, you should discuss the situation with your doctor.

You may consider having your air ducts cleaned simply because it seems logical that air ducts will get dirty over time and should occasionally be cleaned. While the debate about the value of periodic duct cleaning continues, no evidence suggests that such cleaning would be detrimental, provided that it is done properly.  Cambridge Heating & Cooling has a fleet of specially trucks, along with trained technicians, that will ensure that the job is done properly.

Cooling Maintenance

We do:

• air conditioner maintenance and repairs
• roof top units (commercial)
• duct work
• residential, commercial, industrial

How Central Air Conditioner Works

Central air conditioning helps keep your home cool and reduces humidity levels. By transferring heat from air located inside your home to the outside, conditioned and cooled air is left to be re-circulated. Using electricity as its power source, the compressor inside an air conditioning unit pumps coolant, or refrigerant, back and forth to gather heat and moisture from indoors. Warm air from inside is blown over the cooling coil, which is connected to the compressor, and then pumped back into your home.

Tips on keeping your cooling running smoothly:

• Change or clean your furnace filter
   (Failing to check the filter regularly can be costly: dust and dirt can work their way into the blower and coil assemblies, reducing the furnace's operating efficiency and eventually damaging the motor. )
• check gas coolant pressure

Heating Maintenance

We do:

• furnace maintenance and repairs
• roof top units (commercial)
• duct work
• residential, commercial, industrial
• convert from oil to gas

Tips on keeping your furnace running smoothly:

• Change or clean your furnace filter
   (Failing to check the filter regularly can be costly: dust and dirt can work their way into the blower and coil assemblies, reducing the furnace's operating efficiency and eventually damaging the motor. )
• Clear outdoor exhaust vents
  ( During the winter, be sure to clear snow and ice away from the intake and exhaust vents outdoors. If the vents become blocked, dangerous carbon monoxide fumes can back up into the house, and the furnace could shut down)
• Schedule an annual tune-up
  (An annual checkup by a service technician is also a good idea - especially if you have a natural gas system. The technician will check the flues and temperature settings, examine the heat exchanger for cracks, and check the safety mechanisms)
• Check the owner's manual to see if the blower motor should be lubricated. If you have an older heating unit, you might need to add a drop or two to each oil port.
• Replace frayed belts (mostly on older units)
• Check flues or vents for cracks or blockages
• Check the condensate drain to make sure it is properly attached and flowing freely

How a Gas Furnace Works

Furnaces keep your home warm in the winter and serve as an important part of your air conditioning system in the summer. In a furnace, gas is combusted in a burner and then heat produced from that reaction passes through a heat exchanger where it is transferred to the air distribution system. The duct work throughout a home carries and disperses the conditioned air and the flue or vent pipe releases the byproducts, such as carbon dioxide and water vapor, outside the home.

Air Conditioners:

• Central air, ductless, split, rooftop.

Furnaces:

• high efficiency -single stage, two stage, two stage variable speed,  multistage variable speed
• Boilers: mid efficiency, high efficiency and radiators

Air Quality Products:

• Humidifier
• air cleaners - media type, electronic and HEPA

Tankless Water Heaters.

We are a service driven firm - available to help you solve any issues you might have with your current furnace or air conditioning system.  Call us for any emergency service 24 hours a day, 7 days a week.

Our maintenance and repair service will provide you with exceptional operation of your HVAC systems. We offer professional work and use qualified technicians.

We are authorized resellers of: Lennox, American Standard, Goodman, Honeywell, LG Electronics, and