HVAC CONTRACTORS

Contact J.L. Ash Now: 215-379-2463
​J . L . Ash, Inc.

​​​What is HVAC?

HVAC stands for Heating, Ventilation and Air Conditioning.  These are the various heating and air condition equipment in your home or business that maintain a comfortable environment.


When Should I Do Maintenance?


The old adage is true:  an ounce of prevention is worth a pound of cure. 


You wouldn't drive your car 100,000 miles without changing the oil.  The same logic holds true for your home comfort system.


Regular HVAC preventative maintenance is the best way to ensure trouble-free operation and peak performance.


Pre-season maintenance is also important.  It can help to avoid a system failure in severe hot or cold weather when you need it most, and it can also keep your energy bill from getting out of control.


For a system that heats and cools:

  • perform maintenance in the spring and fall


For cooling system maintenance only:

  • perform maintenance at least once a year, before the cooling season


For furnace maintenance only:

  • perform maintenance at least once a year, before the heating season


How often should I replace the filter?

  • we recommend replacing the filter a minimum of twice during the season, optimally every month


What is a pre-season check-up?

  • ​​a pre-season check-up is an opportunity for your service technician to check the overall function of your hvac system including air filters


How can I increase the efficiency of my home's heating and cooling systems?

  • ​HVAC systems are designed to provide optimal efficiency and comfort. Now it’s time to do the same to your home. Here are some things you can do around        the house to optimize the operation of your system, as well as the comfort inside your home.
  • COOLING SYSTEM MAINTENANCE: Set the thermostat as high as comfort will permit.; Make sure attics are adequately ventilated to relieve heat buildup. If necessary, improve airflow by adding or enlarging vents or installing an attic fan.; Draw blinds or drapes to block sunlight during the hottest part of the day.; Install awnings over windows exposed to direct sunlight.; In the cooling season, don't run kitchen and bath exhaust fans longer than necessary.; Don't place lamps, TV sets or other heat-producing devices beneath a wall-mounted thermostat. Rising heat from that equipment may cause the a/c system to over cool your house.
  • HEATING/FURNACE MAINTENANCE: Locate the thermostat on an inside wall away from windows and doors.; Set the thermostat as low as comfort permits. Each degree over 68°F can add 3% to the amount of energy needed for heating.
  • INSULATION: Make sure your home is properly insulated. This is the single most important step in conserving energy. Thermal insulation should be specified in terms of thermal resistance . R-30 (10") is recommended for ceilings, and R-11(3-1/2”) for exterior walls and floors over unheated areas. In colder climates consider additional insulation.; Infiltration of humid outside air is your heating and air conditioning system's worst enemy—it could account for 15% to 30% of air conditioning energy requirements. Find the places where air can sneak into the home and plug them with caulking, weather-stripping or plastic. Also, weather-strip and caulk around all entrance doors and windows.; Cut heat transfer through your windows by 40% to 50% with double-glazing (two panes of glass separated by a sealed air space) and low-e glass.; Use wood- or metal-frame storm windows even if single-glazed windows are high quality. The extra layer of glass and the layer of still air will cut heat transfer considerably.; Remember that by increasing the glass area, you increase the amount of heat added in summer and lost in winter.; Make sure fireplaces have tight-fitting dampers, which can be closed when the fireplace is not in use. Invest in a humidifier to conserve energy in winter. The air in your home won't be as dry, so you stay comfortable at a lower temperature setting.


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