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Special Articles
for Homeowners from
Chimney Safety
Institute of America

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Appointment call
Johnson Chimney Svcs. at


(202) 338-2300


(301) 502-1717


(703) 836-2906


Licensed & Insured 
MHIC #90306

FAQ's - Frequently Asked Questions

How often should I clean my chimney?
A chimney should be cleaned and/or inspected once a year by a qualified chimney technician.

Why do I need a chimney cap?
To protect your home from water damage caused by rain. One main reason for the breakdown of fireplaces and chimneys is water. Chimney caps also keep birds, squirrels, and other critters from nesting in your home.

Why is it important to have a properly sealed damper?
If your chimney is not properly sealed, it’s like leaving your front door open all year long! That could be $350 - $500 going up your chimney every year in additional energy costs.

How do you know when to replace your refractory panels?
When there's a crack bigger than a dime.

Do you perform inspections prior to oil/gas conversions and why do I need one?
All chimneys should be checked and cleaned to insure all deposits and obstructions are removed.

How do I know if my gas logs need cleaning or servicing?
When the logs become black with carbon deposits and/or the pilot light continues to go out.

How do I know if I need to clean my dryer vent, and how often should I clean it?
If the clothes are still damp after one cycle you should clean your dryer vent. Dryer vents should be checked and cleaned at least once a year to protect the heating element and increase efficiency.

What are the benefits of installing an attic fan?
An attic fan releases the heat that builds in the attic which prevents a strain on the air condition unit.

How often should I clean my ducts?
After the furnace is 5 years old, every 2 to 4 years.

First Rate Service

Kerrana Inc - DBA Johnson Chimney Service/Home Vent Experts specializes in a host of services such as chimney cleaning, damper replacement and repair, chimney relining, chimney caps, solar attic fans, animal removal, furnace and dryer vent cleaning.

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Here To Keep You Warm and Safe

Kerrana Inc - DBA Johnson Chimney Service/Home Vent Experts have represented quality service for over 40 years. Because customer satisfaction is our top priority, we have become synonymous with the best service money can buy. Learn more...

Contact us:

District (202) 338-2300

Maryland (301) 949-1780

Virginia (703) 836-2906


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Licensed and Insured
MHIC #90306