(410) 750-1599
This email address is being protected from spambots. You need JavaScript enabled to view it.
  • Kitchen Remodeling

    Robs Jobs has been installing Beautiful
 Kitchens, Baths and Basements for too many years to count. Whether it 
is a "kitchen on a budget" that you are thinking about or a "full blown
work of art", we can do it all. Read More
  • Snowplowing

    Ol' Man Winter will be back! The Almanac, the meteorologists, and even the wooly bear caterpillars predict
another very rough and snowy winter. Read More
  • Corian Counter Tops

    Robs Jobs has another big secret that most folks don't know about,
that's right, we supply and install Corian, America's number one solid
surface counter top by Dupont. We also supply and install Granite, Silestone and Soapstone. Read More
  • Hardwood Flooring

  • Custom Building

  • 1
  • 2
  • 3
  • 4
  • 5

HVAC Tips

A-C Sizing:

Air conditioning sizing is the most important consideration when adding or even replacing an air conditioner. Rules of thumb abound, but heat gain calculations are the only sure way to get it right. Many factors are involved, and generally it should be left to a professional. The most common air conditioning mistake made is oversizing a system. Half of an air conditioner's work involves removing moisture from the conditioned air. If the system is too big, the area gets cooled fast and shuts off. The system seldom runs long enough to dehumidify the air; this results in a cool, clammy house or room. A properly sized unit will run most of the time on a very hot day. If you have tightened up the house, added insulation or upgraded windows, be sure to discuss this with your cooling contractor -- it could add up to a smaller unit the next time. 

 

Air Circulation:

Forced air heating is common in our homes. The furnace heats air and a fan blows the heated air through ducts to various rooms in the house. The air returns to the furnace through ducts and the cycle is completed. A return in each room is great, but many homes have one or two centrally-located returns. If you are suddenly experiencing cold rooms, make sure you haven't blocked the return air path. Rearranging the furniture is often the culprit here. If you have a heated room that is cold only when the door is shut, the door itself may be blocking the return path. In this case, cutting an inch or so off the bottom of the door might solve the problem. New carpet sometimes fills the space under a door that previously allowed air to pass.

 

Exhaust Fan Venting:

Exhaust fans commonly found in the kitchen and bathroom are considered source control ventilation. While many people see them as a means of eliminating odors, it's more important that they remove excess moisture generated when bathing and cooking. Exhaust fans MUST be vented to the outside! Dumping excess moisture from inside the living space into an unconditioned attic or crawlspace produces a perfect environment for mold, mildew, and the decomposition of building materials. A well ventilated attic is no excuse. Exhaust fans MUST be vented to the outside! Use insulated flex duct because it's easy to work with. And be sure to select a good quality roof or wall cap to keep the outside air out. 

 

Furnace Filters:

One of the simplest home maintenance jobs is also one of the most overlooked. Change the air filter! The furnace filter's main job is to trap dirt and dust in the air that circulates through heating and cooling equipment, but you have to change the filter element regularly for it to work. Here's how. Turn the power to the furnace off. The filter is typically located in the return duct (usually the biggest one) just before it connects to the furnace. The filter slides in and out of a narrow slot in the duct. Note the arrow on the edge of the filter; it should point towards the furnace. When finished, turn the power back on. Change filters every three to four months of heating or cooling. This easy maintenance task will lower operating expenses and maximize the life of heating and cooling equipment, and it will help you breathe easier too. 

 

HVAC Terms:

Heating, Ventilating and Air Conditioning (HVAC) systems are essential to our comfort and well being. Knowing some to the terms associated with this equipment might help in understanding its functioning or enable us to better understand the technicians that service these systems. -BTU (British Thermal Unit) -- Technically the amount of energy required to raise the temperature of one pound of water one degree Fahrenheit. This term is used to indicate the capacity or heating and cooling systems. -SEER (Seasonal Energy Efficiency Ratio). -- This compares the amount of cooling produced to the amount of electricity used. The higher the number, the more efficient the equipment. Ten (10) SEER is the bottom of the scale. -The compressor and condenser are in the unit located outside the house. The evaporator is housed inside the furnace or air handler inside the house. Ask questions if you don't understand what's going on. A good service technician should be happy to answer questions. 

 

Programmable Thermostat:

The thermostat is a temperature-sensitive on-off switch that controls the heat and air conditioning in our homes. They are simple devices and have served us well for many years. Set the thermostat and it maintains a constant temperature in the home. This once-desirable feature has become a liability. Many homes are unoccupied during the day, and keeping them at the same temperature doesn't make sense anymore. Consider installing a programmable thermostat. These high-tech devices automatically adjust their settings according to the needs of the occupants. They have been around awhile, but the new models are cheaper and easier to use than ever. The initial cost will soon be recovered in energy savings. 

 

Thermostat Location:

The thermostat is a simple on-off switch that is activated by the temperature of the air surrounding it. It will turn "on" when the temperature drops below a set point and turn "off" when the temperature is at or above a set point. Setting a thermostat higher than the desired temperature will not make the room warm faster. Thermostats should be located on an interior wall, in a central location and about 60" above the floor. Don't locate a thermostat over a heat vent, or in a sunny or drafty location. When rearranging furniture near a thermostat, be mindful of lamp placement. A lamp placed near a thermostat may cause it to think the room is warm when it is actually cold. 

 

Window Air Conditioners:

With winter coming, now is the time to pay a little attention to that window air conditioner. Remove the front cover and take out the air filter (usually a spongelike material) and clean or replace it. It's easier to keep the winter winds out if the unit is removed from the window, but if it is left in make sure that it is sealed well. Additional maintenance will improve the performance and life of the unit. Remove the cover on the outside portion of the unit and check the coils. They should be free of dust and debris -- if air can't circulate through them they can't do their job. Locate the drain hole in the bottom of the case near the back -- it should be clear of debris. Finally, put a bucket under the drain and wash the bottom pan with a 50/50 chlorine bleach water solution. Rinse with clean water.