(610) 432-8070Family-owned in Allentown since 1988
Family-owned since 1988

Your Trusted Local HVAC Provider

ICS Heating & Air Conditioning repairs, maintains and installs heating and cooling systems in Allentown and across Lehigh and Northampton counties.

ICS Heating & Air Conditioning logo
  • 4.9 stars on Google59 reviews
  • Bryant Factory Authorized DealerNATE-certified technicians
  • BBB A+ ratingAccredited since 2000
  • Nextdoor Neighborhood Fave2020, 2022, 2023 and 2025

Heating and air conditioning in Allentown and the Lehigh Valley

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.

LKLocal Guide · 76 reviews · 47 photosG
★★★★★July 2026

“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!”

Jennifer Roscher3 reviewsG
★★★★★November 2025

“Prices are reasonable and they won’t try to “upsell” you on anything you don’t need, which is always appreciated.”

Jodi Eslinger1 reviewG
★★★★★November 2025

“Their pricing is very reasonable and their technicians are very professional and courteous.”

Joshua Edelman22 reviews · 25 photosG
★★★★★April 2026

“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.”

Lauren Coker8 reviews · 5 photosG
★★★★★November 2025

“Their pricing is fair, and I always feel confident that they’re giving me honest recommendations and taking the best care of my home.”

Michael Schrey4 reviewsG
★★★★★November 2025

“The price was very reasonable and the workers professionalism and friendliness was spectacular.”

Keith BendelLocal Guide · 11 reviewsG
★★★★★November 2025

“Installed my boiler and made sure everything works well. Dave came to service my system and was quick and knowledgeable.”

Matthew Rohrbach1 reviewG
★★★★★November 2025

“Had my water heater replaced by ICS. Great customer service, communication, and absolute professional work all around.”

Michael Harden12 reviewsG
★★★★★November 2025

“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.”

Cindy Polzer11 reviewsG
★★★★★March 2025

“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.”

Dave SLocal Guide · 27 reviews · 3 photosG
★★★★★January 2016

“We called ICS and even with a full schedule they were able to visit the same day.”

Darlene Reilly8 reviewsG
★★★★★June 2019

“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.”

How ICS has worked since 1988

Our three founding principles

Tom Howard, Joan Howard and John Heckenberger built ICS on three principles.

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.

Quality equipment and workmanship

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.

Transparent, competitive pricing

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.

Proudly serving the Lehigh Valley

Family-owned in Allentown since 1988

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 ICS
Since 1988
  • Bryant Factory Authorized DealerFactory-trained, NATE-certified technicians
  • BBB A+ ratingAccredited business since 2000
  • Nextdoor Neighborhood Fave2020, 2022, 2023 and 2025
  • PA HIC #PA046041Pennsylvania home improvement contractor

Financing available

ICS offers financing on new equipment and repairs, subject to credit approval. We accept credit cards, ACH payments and checks.

Communities we serve

ICS serves homes and businesses in every part of the Lehigh Valley and surrounding areas.

AllentownBethlehemEastonWhitehallEmmausMacungieAlburtisBreinigsvilleCenter ValleyCoopersburgCoplayNeffsNew TripoliOrefieldSchnecksvilleBathNorthamptonQuakertownKutztownLehightonPalmerton

See all service areas

Location

1732 W Fairmont StAllentown, PA 18104
Get directions
Office hoursMonday to Friday: 9 AM to 4 PMSaturday and Sunday: Closed
EmergenciesExisting customers can reach our answering service 24/7 for emergency repairs.
Brands we install
BryantMitsubishi ElectricNew YorkerBradford WhiteA.O. SmithAprilAire

Frequently asked questions

What areas does ICS serve?
ICS serves all of Lehigh and Northampton counties, including Allentown, Bethlehem, Easton, Whitehall, Emmaus and Macungie, plus nearby Quakertown, Kutztown, Lehighton and Palmerton. See the full list on our service areas page.
Do you offer emergency service?
Yes, for existing ICS customers. Our answering service takes calls 24/7 for emergency repairs. The office answers the phone Monday to Friday, 9 AM to 4 PM.
What brands do you install?
ICS is a Bryant Factory Authorized Dealer and installs Bryant furnaces, air conditioners and heat pumps. We also install Mitsubishi ductless systems, New Yorker and Bradford White boilers, Bradford White and A.O. Smith water heaters, and AprilAire and Air Scrubber air quality products. See the products we install.
Do you offer financing?
Yes, on new equipment and repairs, subject to credit approval. See financing options.
Do you accept credit cards?
Yes. We accept credit cards in person or over the phone, card and ACH payments through our online bill pay, and checks by mail.
Do you work on commercial buildings?
Yes. We service packaged rooftop units up to 10 tons, split systems up to 5 tons, and central boiler systems in apartment buildings. See commercial HVAC.

Request service

What do you need?

No heat or no cooling right now? Call (610) 432-8070.

Schedule service with ICS

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

1732 W Fairmont StAllentown, PA 18104
Get directions
Office hoursMonday to Friday: 9 AM to 4 PMSaturday and Sunday: Closed
EmergenciesExisting customers can reach our answering service 24/7 for emergency repairs.

Pay your bill online

Schedule Service
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