80% furnaces
Turns 80 percent of its gas into heat and vents through a chimney or metal flue, like most older furnaces. Often the simpler swap where new venting would be hard to run.
Furnace Installation Services
ICS Heating & Air Conditioning installs and replaces gas furnaces in Allentown and across the Lehigh Valley.
Gas furnaces we install
ICS installs Bryant gas furnaces as a Bryant Factory Authorized Dealer, from standard 80% models to high-efficiency furnaces rated up to 98.5% AFUE.
Preferred Series
High-efficiency furnaces with a variable-speed blower. The two-stage models run on low heat most of the time, which is quieter and keeps temperatures steadier.
Evolution System
Bryant's top line. The modulating Evolution 987M adjusts its heat output in small steps to match the weather. Evolution furnaces include the Red Shield 10-year unit replacement limited warranty.
Our process
In-home visit
We look at your current furnace, the ductwork, venting, gas line and thermostat, and ask about rooms that run hot or cold.
Written quote
You get your equipment options and prices in writing, with financing if you want it.
Installation day
Most furnace replacements take a day. We remove the old furnace, set the new one, and connect the gas line, venting, condensate drain and thermostat.
Startup and walkthrough
We start the furnace, check the gas pressure and venting, test for carbon monoxide, and show you the thermostat and where the filter goes.
Warranty and financing
Bryant Preferred and Evolution furnaces carry a 10-year parts limited warranty and a lifetime heat exchanger limited warranty when registered with Bryant within 90 days of installation. Evolution furnaces add the Red Shield 10-year unit replacement limited warranty for the original homeowner.
ICS offers financing on new heating systems through Wells Fargo and NEIF, subject to credit approval. See financing and payment options.
See our reviews
Jodi Eslinger1 reviewG“Their pricing is very reasonable and their technicians are very professional and courteous.”
Michael Harden12 reviewsG“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.”
Ryan Martin2 reviewsG“Everything that needed to be done was thoroughly explained to us and was executed as quoted.”
LKLocal Guide · 76 reviews · 47 photosG“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“Prices are reasonable and they won’t try to “upsell” you on anything you don’t need, which is always appreciated.”
Joshua Edelman22 reviews · 25 photosG“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“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“The price was very reasonable and the workers professionalism and friendliness was spectacular.”
Keith BendelLocal Guide · 11 reviewsG“Installed my boiler and made sure everything works well. Dave came to service my system and was quick and knowledgeable.”
Matthew Rohrbach1 reviewG“Had my water heater replaced by ICS. Great customer service, communication, and absolute professional work all around.”
Cindy Polzer11 reviewsG“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“We called ICS and even with a full schedule they were able to visit the same day.”
Frequently asked questions
How much does a new furnace cost?
It depends on the efficiency, the Bryant line, and whether the venting, gas line or ductwork need changes. A 90%+ furnace costs more to install than an 80% model and less to run. You get a written quote after the in-home visit.
How long does a furnace replacement take?
Usually a day. A conversion from oil, or a move from an 80% furnace to a 90%+ furnace with new venting, can take longer.
When should I replace my furnace?
Common reasons are age (15 to 20 years), repairs that keep adding up, a cracked heat exchanger, or rooms that never get warm. Not sure yet? See furnace repair.
Should I get an 80% or a 90%+ furnace?
AFUE is the share of the gas that becomes heat in your home. An 80% furnace sends 20 cents of every gas dollar up the chimney, and a 96% furnace loses 4 cents. High-efficiency furnaces pull so much heat from the exhaust that it condenses, so they vent through PVC pipe out the side or roof of the house and need a drain. An 80% furnace uses the existing chimney or metal flue. Which one makes sense depends on your gas use, where the furnace sits, how easily new venting can run, and how long you plan to stay. We go over the installed price and the operating cost of each at the estimate.
Can you switch my home from oil to gas or propane?
Yes. ICS replaces oil furnaces and boilers with gas or propane heating and removes the old oil tank. Where natural gas runs on your street, gas usually costs less to run than oil. Where it doesn't, propane does the same job from a tank your propane supplier installs. A conversion can also include a new gas line, a chimney liner or new venting, and a new thermostat. Our Easton page describes a gas conversion we did on the South Side.
Should I replace my air conditioner at the same time?
If both are more than about 12 to 15 years old, replacing them together saves labor and gives you a matched system. See AC installation.
Can a heat pump work with my gas furnace?
Yes. A dual fuel system pairs a heat pump with a gas furnace. The heat pump heats in mild weather and the furnace takes over when it gets cold. See heat pumps.
Do you install propane furnaces?
Yes. Bryant gas furnaces can be set up to run on propane, the usual choice where natural gas isn't available.
Request service
Get a furnace estimate
Request an in-home estimate online or call the office at (610) 432-8070.
1732 W Fairmont StAllentown, PA 18104
Get directions
Get directions
Office(610) 432-8070
Office hoursMonday to Friday: 9 AM to 4 PMSaturday and Sunday: Closed
EmergenciesExisting customers can reach our answering service 24/7 for emergency repairs.