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Frequently Asked Questions


Q: How often should I change the filter?
You should change your filter about every 1 to 3 months depending on where you live (under-construction subdivision) and filter type.

Q: Why should I have my equipment serviced before the spring and fall season starts?
To help ensure your heating and cooling equipment will not fail when you need it the most and to keep it as efficient as possible.

Q: How long does it take to have my air conditioner or furnace maintenanced?
A preventive maintenance check routinely takes approximately 1 hour, if you have kept your units properly maintained.

Q: I dust and the next day the dust is there again. What can help with this problem?
After we perform the blower door test, we have isolated the major infiltration problems and are able to remediate them.

Q: I have one room that stays either too cold or too hot compared to the rest of the home. What can be the cause of this and how can it be corrected?
This problem can be caused by inadequate ductwork or thermal bypass inside of a conditioned space. The blower door will aid in indicating the problem areas for correction.

Q: The unit outside has ice on it. Is it broken or about to go out?
No. If your unit is routinely maintained it will help it run more efficiently. If you own a heat pump, the ‘ice’ you see could mean it is about to go into defrost mode. If it is not a heat pump or has just come out of defrost, you may require a service technician to diagnose and correct the problem.

Q: My children have allergies. What can be done to make the air cleaner and healthier in my home for them?
Elimination of infiltration in the house and ductwork will drastically cut back your family members allergy symptoms.

Q: My home has a musty, old “smell” in it. Is there something that can be done to cure this?
We routinely complete our Whole House Comfort Check-Ups, using our blower door, on older and newer homes to eliminate odors.

What is a blower door?
The blower door is a diagnostic tool which helps locate air leaks in buildings and measures how leaky they are. Originally developed over 30 years ago by scientists researching building energy losses, it is now used by hundreds of HVAC contractors to find a host of problems related to home comfort, dust and allergy problems and high utility bills.

Can a blower door find duct leakage?
The blower door was originally used to find over all building infiltration, it is common practice to use a blower door in conjunction with a air capture hood to measure duct leakage.

What actually is duct leakage?
This is the expensive conditioned air leaking out of supply ducts to the outside, and outdoor air leaking into return ducts and plenums.

I can see how disconnected ducts can be a problem, but do the small cracks and gaps really amount to much?
Until recently the extent of duct leakage was largely overlooked. But research as found that unsealed joints and loose connections in the typical system adds up to between 30 and 80 square inches of combined leakage area.

What can duct leakage do to a systems performance?
Duct leaks can dramatically reduce the capacity of an otherwise well installed HVAC system. In fact in a study done by the EPA they state that typical duct systems lose 25-40 % of the heating or cooling energy put out by the central furnace heat pump or air conditioner.

Can duct leakage attribute to indoor air quality problems?
Duct leakage often worsens building indoor air quality by bringing in outdoor contaminants from garages, crawl spaces, and attics. In some cases duct leakage causes combustion and fire hazards due to backdrafting of appliances.

Air infiltration in a home, is this a serious problem?
Uncontrolled air infiltration represents a sizeable portion of the cooling dehumidification and heating loads, typically between 20% and 30%. Many homes have Equivalent Leakage Areas of between three and eight square feet.

I have heard of a Thermal Bypass, but what actually is one?
Most homes have hidden or "Thermal Bypasses" which cause significant conductive energy loss. Typically these area are dropped ceiling (fur downs) over kitchen cabinets, bath tubs or closets. Open wall cavities around fireplace chimneys or plumbing/duct chases, and of course insulated attic hatches, pull down stairs and bare sheetrock. Heat gain or loss is often greater through these areas than through the rest of the attic floor.

Can a poor thermal envelope cause any other problems?
Thermal envelope problems contribute to discomfort of all kinds. They add to the cooling and dehumidification load in the summer. They cause cold drafts and dryness in the winter. They bring in dust, noise and insects from outside. Fixing these problems have more benefits than simply energy savings.










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