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  1. Stay ahead of the curve with Honeywell

    August 2, 2013 by admin | Category: EducationalComments (0)

    Honeywell’s RedLINK components provide the option of customizing any RedLINK Wireless Comfort system to achieve control, comfort and convenience.





  2. Increase Your Home’s Comfort & Energy Efficiency

    May 10, 2013 by admin | Category: EducationalComments (0)

    A comfortable home is an energy efficient home. Hot and cold spots, running out of hot water or poor air quality are signs your HVAC and plumbing systems are underperforming. We offer a selection of Air Conditioning, Ventilation and Plumbing products for a total home solution promoting balanced temperature control, cleaner air, and reduced energy and utility consumption. We invite you to get comfortable in your own home and reduce your utility usage, with these featured products. Our licensed Contractors perform seasonal maintenance, repair and air conditioning services that will keep you feeling and breathing easy while lowering your utility bills.


  3. Increase Air Conditioner Efficiency By Cleaning The Coils

    April 30, 2013 by admin | Category: Educational, HelpfulComments (0)

    As warm weather approaches, this is a great time to schedule your residential HVAC system maintenance to make sure your central air conditioner is working efficiently.  Keeping your air conditioner in top working order will help it last longer and reduce your energy bills.

    There are a few things you can do yourself, but don’t forget to have the system serviced by an experienced HVAC technician.  Air conditioning professionals have special equipment including gauges to check the pressure in the system that homeowner cannot do themselves.

    Due to the way that a modern air conditioning system works, keeping the coils clean and free of blockages is important toCoil-Cleaning the efficient operation of the system.  A typical residential air conditioning system has a condenser coil located in the outdoor unit and an evaporator coil installed the duct system above the furnace.

    Coolant is compressed and pumped through the outdoor condenser coil where it is cooled by blowing air across the coils.  The coolant then flows to the indoor evaporator coil where it expands and gets very cold.  Indoor air is cooled by blowing it across the coils and is then distributed throughout the home through the ducts.

    As you can see, good airflow across the coils is important to keep your system operating efficiently.  Dirt, dust, and debris that blocks airflow across the coils makes the system less efficient which means it has to work harder.  Keep your condenser coil free of dirt, leaves, grass clippings, and other debris and make sure there is at least two to three feet of space around the unit.

    Indoors, change your air filter regularly to help keep the evaporator coil clean.  If the evaporator coil becomes clogged with dirt and dust, you can clean it carefully using the brush attachment with a vacuum cleaner.  Be sure not to damage the soft aluminum fins.


  4. Convert with Confidence

    March 20, 2013 by admin | Category: EducationalComments (0)


    Ensuring a proper match-up of evaporator coils, filter drier and TXV will maintain high efficiency in R22-to-R410A converted units and prevent callbacks. Just follow these three easy steps:


    1. Match the outdoor unit properly to an AHRI-rated evaporator coil to ensure system performance. An improperly matched indoor coil can create undue stress on a cooling system, resulting in dramatically reduced efficiency and possible premature failure.

    2. Flush the system with a solvent formulated for R410A retrofits to
    clean the line set of particulates, acid, oil and water that could undermine your retrofit. When possible, replace the line set for better results.

    3. Install a filter drier and well-matched TXV to ensure proper refrigerant flow, optimize performance.


  5. Commercial Refrigeration Equipment Life Cycle

    February 15, 2013 by admin | Category: EducationalComments (0)

    From first purchase through years of service, you can count on Johnstone Supply for your refrigeration equipment, maintenance supplies, and service parts. Here’s a quick diagram outlining the Commercial Refrigeration Equipment Life Cycle.


    refrigeration life cycle


  6. Johnstone Tech Tip

    February 13, 2013 by admin | Category: EducationalComments (0)



  7. Sources of Carbon Monoxide

    February 6, 2013 by admin | Category: EducationalComments (0)

    The list of CO sources could be very long, and there is always something to add to it. Basically, every time when carbon fuels are used, the products of combustion contain Carbon Monoxide. If products of combustion (fumes) find their way inside of the house, they will bring Carbon Monoxide along.



    A few examples of possible sources:

    ♦ Household appliances like gas  furnace, gas hot water heater, fireplace, kitchen range, cloth dryer. They burn natural gas, propane, heating oil, wood. A regular check ups only reduce chances of getting CO from heating appliances, but can not eliminate them completely.

    ♦ Even a burnt turkey in the oven or a burnt toast produces some CO. Though in this case Carbon Monoxide is not the biggest concern.

    ♦ Anything with engines — cars, bikes, power tools. Engines are so powerful sources of Carbon Monoxide that they may pollute air the house even when are used outdoor in the vicinity of the house. Sometimes all it takes is to live close to a busy intersection.

    ♦ In no cases cars, bikes, power tools with engines can be run inside of the house. Even if it’s only in garage and just to warm up. Absence of the door between the garage and the rest of the house makes almost no difference.

    ♦ If your house is not completely detached (semi-detached, row house, apartment) your can get Carbon Monoxide from your neighbour through the shared walls.

    Quite often events that create unsafe condition are unpredictable and totally out of our control. Our only defense is a good alarm or several of them better yet.

    Indoor levels of CO generally follow outdoor levels unless there is a problem inside of the hose. That is why when troubleshooting Carbon Monoxide instances, we want to know ELEVATION – i.e. how much the level of Carbon Monoxide inside exceeds the ambient level of CO.

    Outdoor levels of CO below 1 ppm are usually found in rural an quiet suburb areas. In urban settings 50 ppm can be found on the streets with heavy traffic. Most of the time though levels varies between 1 to 10 ppm.

    Only when elevated level of Carbon Monoxide is measured in the house, should we start investigating into the causes.

    via CozyWorld


  8. Standard HVAC Methods Don’t Always Work in Old Houses

    January 15, 2013 by admin | Category: EducationalComments (0)

    Adding to the ductwork can severely cripple the home HVAC system.  This is especially true if the house has more than 1 story, and the ductwork was designed a long time ago.

    What can people add to the ductwork? It could be more ductwork attached to old-furnacethe existing ductwork. It could be something that people insert into the ductwork – air conditioning coil or very dense a furnace filter.

    Homeowners build additions to the house: the second store, a sun room or a greenhouse. The ductwork for the addition is often just added to the existing ductwork without increasing its size. Air for heating and cooling of the added rooms comes at the expense of the existing rooms. As a result nobody gets decent heating and even much less cooling.

    In some houses homeowners can get away with attaching additions to the existing ductwork. Usually this is a bungalow that previously had an oversized furnace. It’s not unusual to come across a 1,000 sq. ft. bungalow with an old 120,000 BTUmonster-furnace sitting in the basement. Quite often the owner can attach a horizontal addition like a sunroom to the existing ductwork without affecting the rest of the house. If there is any problem with uneven temperature or humidity throughout the house, it can easily be solved by keeping the furnace fan continuously running.

    On the other extreme are old 2 and 3 story houses whose ductwork many years ago was intended for heating only. There are lot of them in the downtown of Toronto. No addition to that ductwork goes unpunished.

    Today’s furnaces with much stronger blowers can partially compensate for the undersized ductwork, but only partially. If radical changes to the ductwork are not practical, ductless heat pumps can take care of remote rooms of the house.

    Via CozyWorld.


  9. Low Pressure Orifice Chart

    January 10, 2013 by admin | Category: EducationalTags: | Comments (0)

    Looking for a Low Pressure Orifice Chart? Search no more. Here’s a printable one!



  10. False Alarms

    January 4, 2013 by admin | Category: EducationalComments (0)

    False Alarms are part of the life. They are not always false.

    We refer to carbon monoxide alarm as a false alarm every time when we are unable to pinpoint the cause of the alarm. This is what it actually is – we are unable.

    False alarms is a part of having a Carbon Monoxide alarm in your home. Besides Carbon Monoxide, alarm may sound on many things – cleaning chemicals, mosquito repellents, humidity, power surge, etc. Even when detectors die – most probably they will let you know about this fact with false alarm.

    L39-709clThe best way to tell false alarms from justified ones is to have 3 alarms in the house. For example, If you have 2 alarms showing 0 ppm and the third one displaying for a half an hour something out of whack, you can safely accept the reading indicated by 2 alarms as true.

    Do not rush to discard the faulty alarm though. Switch alarms. Does the same alarm keeps alarming? Probably it needs replacement.

    Try to recall what has happened around that alarm within one hour prior to it went off. Did you use any cleaning chemicals, aerosols? Any power fluctuation? Carpet steam cleaning was done and the alarm is plugged into the outlet close to the floor? There are so many things that can trigger an alarm.

    Carbon Monoxide alarms live on average 5 years. Get into a routine of buying a fresh alarm every other year. This way you will always have in the house at least 3 working alarms. When an old alarm starts acting up, just discard it. They are not serviceable.

    Another source of false alarms are dual alarms – a combination of Carbon Monoxide alarm with Gas or Smoke alarm in one unit.

    It is probably a good idea to also have a gas alarm in the house, especially if your fuel is heavier than air and can hide undetected in the basement, like propane or oil. The trouble is that gas detectors themselves cause a fair amount of false alarms.

    Nail polish that your wife used, wine that you pored into simmering meat, glue that your kid used to assemble his toys, bunch of other chemicals can trip a gas alarm off. Smoke detector also may go off for no apparent reason.

    When one of the alarms goes off, people often get confused about the cause of the alarm. Keep in mind that alarms may go off at night, or when only children are home. If you want to have the both Carbon Monoxide and Gas alarms in the house, try to at least separate them.

    To sum up. The majority of alarm are false. When Carbon Monoxide alarm goes off, the only way to prove the alarm wrong is to compare it against other alarms in good working condition. No matter how many times you have had the alarm false, take every alarm seriously until you have proven it false.

    Via CozyWorld.