Gas Furnaces

Harmonic Heating & Air Conditioning specializes in installation and replacement of all types of gas furnaces in Montgomery, IL. We offer a wide variety of gas furnace installation and gas furnace replacement options to meet efficiency and budget needs. Our staff can diagnosis your existing systems and recommend terrific new high efficiency choices. We offer same day evaluation and prompt gas furnace installation services in Montgomery, IL.

Let us help you decide how best to solve you gas heating problems the the installation or replacement of a gas furnace.

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Installed An Armstrong 110k Btu 96% Furnace And A Honeywell F100 Media Air Filter
Tara, S. Montgomery, IL
11-10-2022

Installed An Armstrong 110k Btu A962E Furnace, HE 200 By-pass Humidifier, Honeywell F100 Media Air Filter And An Original Furnace Diagnostic At A Service Appointment
Katie and Mark, R. Montgomery, IL
03-03-2022

Installed A Trane 100k Btu SB81 Furnace
Mike, H. Montgomery, IL
02-14-2022

Installed An Armstrong HVAC System, 90k Btu A802v Furnace, 3.5 Ton LE16 Air Conditioner With Matching Coil, 700M Humidifier, Honeywell F100 Media Air Filter And An Ecobee 5 Wi-fi Programmable Smart Thermostat
Penny and Jeff, H. Montgomery, IL
02-14-2022

Furnace Diagnostic, Temporary Furnace Repairs Until Installation Of New Furnace, Installed An Armstrong 135k Btu A802v Furnace And A Honeywell F100 Media Air Filter
Carl & Missy, F. Montgomery, IL
01-27-2022

Purchased A VIP Maintenance Program And Installed An Armstrong 70k Btu A80 2V Furnace
Dennis, P. Montgomery, IL
01-06-2022

Installed An Armstrong 90k Btu A80 1E CT Furnace And An Ecobee 5 Wi-Fi Programmable Thermostat
Ron, S. Montgomery, IL
10-01-2021

Installed An Armstrong System, 70k Btu A80 1E CT Furnace And An 1.5 Ton LB13 Air Conditioner With Matching Coil
Rating:

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Robert, S. Montgomery, IL
09-13-2021

Installed An Armstrong HVAC System, 135k Btu A80 1E CT Furnace And A 4 Ton LE16 Air Conditioner With Matching Coil
Lesly, F. Montgomery, IL
09-08-2021

Installed An Armstrong 110k Btu A80 2v Furnace And Humidifier Panel
Rating:

"I really appreciated how Liz and the technicians clearly communicated everything. One tech even came back at 5pm on a Friday night to fix something that wasn’t quite right during install. Will definitely use Harmonic for all our HVAC needs. "

Haylee & Andy, K. Montgomery, IL
01-18-2021

Installed An Armstrong 135k Btu A80 1E CT Furnace
Rating:

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Douglas, H. Montgomery, IL
01-08-2021

Installed An Armstrong 90k Btu A80 2v Furnace, Installed An Armstrong 3.0 Ton LE16 Air Conditioner, Installed A Lyric T6 Pro Wi-Fi Thermostat And Installed An IWave Air Purifier
Rating:

" The guys were professional, knowledgeable and kind. They cleaned up after themselves and wore all the protective gear. Great Job; we got a heater and air conditioner and they were in and out in under 6 hours (2 guys). They even helped me get my foosball table into the basement. Thanks guys!"

Billy & Jennifer, A. Montgomery, IL
05-20-2020

Installation Of An Armstrong 90k Btu A80 2v Furnace And Installation Of An Armstrong 3.0 Ton LE16 Air Conditioner
Vanessa, N. Montgomery, IL
01-22-2020

Installation Of An Armstrong 70k Btu A80 1E CT Furnace And Installation Of An Armstrong 2.0 Ton LB13 Air Conditioning Unit
Rating:

" Your installation techs were top-notch and complete the job in less time than anticipated."

Todd, C. Montgomery, IL
12-16-2019

Installation Of An Armstrong 2.0 Ton LB13 Air Conditioner, Installation Of An Armstrong 70k Btu A80 1E CT Furnace And Installation Of A Condensate Pump
Morgan, M. Montgomery, IL
10-28-2019

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