Heater And Air Conditioning Repair and replacement


Heater Repair and Replacement

Karalis Mechanical expert heating repair technicians can handle any heat or hot water emergency.


Air conditioning Repair and Replacement

Karalis Mechanical Services provides fast, reliable air conditioning repair services that will help you deal with the summer heat.



Karalis Generators installs the most-reliable and best-built generators
in the area.


Electrical Repair

Karalis Mechanical provides a full spectrum of electrical repair and service. Electrical problems can be a quick fix or a serious issue.

Karalis Mechanical Logo

Hometown Service with Affordable Rates


Commercial Refrigeration

Karalis Generators is the leader
in commercial refrigeration repair
and service.


Service Agreements

We can even perform a FREE carbon monoxide check with every heating repair service.

Why use Karalis Mechanical
for your heater and Air Conditioning repair and Replacement services?


Available 24 Hours

24 Hour Emergency Services


Financing Options

Financing Options


Same Day

Same day, reliable services from licensed technicians providing the best heater and air conditioning repair and replacement services.


Warranties and Preventative Maintenance Plans

We offer preventative maintenance plans that keep your HVAC system or home generator running strong throughout the year.

Gold Saving

Major Savings

We look to repair first! Your comfort is our top priority.

Gold Saving


We are a Carrier dealer, but we are experts in servicing and repairing most brands of air conditioners and heaters.

HVAC Repair Service
Residential HVAC
Call Us Now:

Or visit our office
2035 Sproul Road, Broomall,
Pennsylvania 19008

Why choose us For Heater or AIr conditioning Repair and Replacement Services?

Here at Karalis Mechanical Services, we take pride in our heater and air conditioning repair and replacement services. We have an unmatched commitment to customer service and affordable pricing in Delaware County and the Main Line. We work 24/7 to ensure our customers are comfortable no matter the weather. From heating and cooling to generator installation and other electrical needs, we are here to serve you. Our local technicians can evaluate your heating and cooling repair or replacement needs with a free in-home consultation. Our trucks are stocked with the common parts we need to get your HVAC system back up and running as fast as possible. We will do everything we can to repair your HVAC system on our first visit and if replacement is necessary, we’ll make sure you get the right system for your needs and budget. 

Our Customers
Love What We Do

Over 1353 Satisfied Customers

“Very Knowledgeable”

We could not be happier with our experience with your company! The generator works perfectly, and you have always been responsive to any questions we have had. The young man who recently did the annual inspection of the generator was excellent. He was very personable and kind, and did a thorough job for us, explaining everything he did. We are very, very pleased with Karalis! Thank you!

Naaila Malik

“True Professionals”

The technician was excellent. Noticed extra moisture around the electrical box, called his boss right away, and turned out it was not a big deal but appreciate the thoroughness of the job.

Gina Pilidis

“Excellent work”

Your interest in customer satisfaction is respected. Thank you.

Corinne Nimey

“Frank Ceffaratti”

Fantastic service. Prompt and courteous.

Catherine Jane

Schedule An Appointment


Office And Warehouse

We are in the heart of Broomall on Sproul Road across the street from the Wawa. We stock many parts for popular systems. You can count on fast reliable service.

Versatile and cost-effective services

We make sure that we source and make available high caliber professionals to carry out AC repairs and AC installation.



Here Comes the Heat! Karalis Featured on NBC10

As a prolonged heat wave sets in, temperatures are expected to soar, placing additional strain on cooling systems. NBC10's Brenna Weick sought advice from HVAC expert Paul Karalis on how to ensure your air conditioning unit remains efficient and effective throughout the summer. Karalis shared valuable tips on maintaining optimal performance, including regular filter changes, cleaning the unit's coils, and ensuring proper ventilation around the system. By following these guidelines, homeowners can stay cool and comfortable even during the hottest days. Skip to the 1-minute mark for the story.

NBC10 Features Karalis