Access and peace of mind
Same-day service, 24/7 emergency repair for existing customers, and open communication with the owners. You can always reach the people who run ICS.
ICS Heating & Air Conditioning repairs, maintains and installs heating and cooling systems in Allentown and across Lehigh and Northampton counties.

ICS Heating & Air Conditioning has worked on homes and businesses in the Lehigh Valley since 1988. Our technicians repair, maintain and install gas furnaces, boilers, central air conditioners, heat pumps, ductless mini-splits and water heaters, along with whole-house air purifiers and humidifiers.
ICS is a Bryant Factory Authorized Dealer and also installs Mitsubishi ductless systems. Choose a service to see what it covers, or call (610) 432-8070.
Replacing a system? See furnace installation and AC installation.
“They sent a couple techs out this morning. They identified and fixed the problem and saved us from a sweltering day and gave us relief from the terrible heat!”
“Prices are reasonable and they won’t try to “upsell” you on anything you don’t need, which is always appreciated.”
“Their pricing is very reasonable and their technicians are very professional and courteous.”
“Instead of upselling me on a brand new air conditioner like the other heating and cooling companies tried to do, he performed an honest capacitor replacement and had my AC running like new within an hour of diagnosis.”
“Their pricing is fair, and I always feel confident that they’re giving me honest recommendations and taking the best care of my home.”
“The price was very reasonable and the workers professionalism and friendliness was spectacular.”
“Installed my boiler and made sure everything works well. Dave came to service my system and was quick and knowledgeable.”
“Had my water heater replaced by ICS. Great customer service, communication, and absolute professional work all around.”
“The entire team was knowledgeable, thorough in their explanations, and maintained a clean workspace throughout the project. They also removed the oil tank efficiently and without any odor.”
“They provided excellent service from start to finish: sales, installation, training us on the new smart thermostat and the office support staff. They even completed the rebate forms for me.”
“We called ICS and even with a full schedule they were able to visit the same day.”
“I was lucky to find such a professional company since they took out an oil burner & replaced it with a gas unit in my other house on South Side of Easton.”
Tom Howard, Joan Howard and John Heckenberger built ICS on three principles.
Same-day service, 24/7 emergency repair for existing customers, and open communication with the owners. You can always reach the people who run ICS.
We install equipment and materials built to last, starting with Bryant systems. As a Bryant Factory Authorized Dealer, ICS employs NATE-certified technicians who train with the manufacturer.
You get the price before the work starts. If a repair or an upgrade would help, the technician explains why and what it costs. Our air quality prices are published on this site.
Tom Howard, Joan Howard and John Heckenberger started ICS in 1988. In 2025, Josh Howard, Tom and Joan's son, took ownership with Dave Sandt and Mike Wasilkowski, two long-time members of the ICS team.
ICS stands for Indoor Comfort Specialists, the name on our vans. We still run the company on the principles it started with.
About ICSICS offers financing on new equipment and repairs, subject to credit approval. We accept credit cards, ACH payments and checks.


Call the office at (610) 432-8070 or send a request for a repair, a tune-up or a new system estimate.