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AC Troubleshooting and Diagnostic Guide

When your air conditioner breaks down or begins malfunctioning, it’s generally pretty hard to miss. The tricky part is knowing which part of the AC is the source of your problem.

At Cranney Home Services, we respond to AC repair calls every single day. These types of jobs are simply part of our regular service rotation routine and we make every effort to help our customers understand what causes the problem and how they can avoid it in the future.





Damaged or burned out capacitor.

Capacitor replacement will restore power to AC.

Evaporator Coils

Dirt, bacteria or mold build-up on coils.

Thorough cleaning will restore proper performance and prevent health problems.


Blown, damaged or loosened fuse.

Replacement of fuses will restore power to AC.

Drain Lines

Debris clogging drain lines.

Routinely check and clear drain lines to prevent water damage.


Worn down or stuck relays.

Replacement or repair of malfunctioning relays will restore AC to working order.

Outdoor Fan Motor

Outdoor debris blocking fan, causing overheating.

Manually check and remove debris.

Indoor Fan Motors

Damaged shaft causes noise or decreased air pressure.

Replace or repair blower motor.

Air Handler

Poor air circulation.

Clean or replace air filters/check functionality of blower motor.


AC blowing hot air.

Replace or repair compressor.

Don’t ignore a malfunctioning air conditioner—or you’ll end up paying for it in the end! Let Cranney Home Services make all necessary repairs and get your AC operating at design performance once again!

What Sets Cranney Home Services Apart?

We can be reached 24 hours day and are available to respond to emergencies quickly. Our staff is expertly trained in all areas of customer service.

Our Heating and Cooling Technicians, Plumbers and Electricians are licensed, uniformed and professional. They respect your home and your property. They go as far as to put on booties before entering your home and roll out a protective carpet as well. The diagnostic or dispatch fee that we charge allows our professionals to carefully evaluate your problem and/or inspect your systems so they can provide you with a flat rate price to do the work you’ve requested. Once you approve that price and all that it includes, Cranney Companies will complete the requested work for you. Service Partner Plans will be offered to you at the time of our visit. If you opt to purchase one of these plans, you will receive an immediate 15% discount on your services that day and many other benefits. Serving you well is important to us! Our Customer Service Representatives will personally follow up with you, upon completion of the work, to make sure that everything was accomplished to your satisfaction.

Proudly Serving The
North Shore and
Merrimack Valley
Areas include:
Salem   |   Andover   |   Danvers   |   Lynnfield   |   Melrose
and surrounding cities