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Top-Rated Furnace / forced air heating system install or replace pros in Oswego - Updated Nov 2026

Avatar for Home Comfort Systems Inc
Home Comfort Systems Inc
4.9(
315
)
Gas Furnace / Forced Air Heating System - InstallBoiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For Business+43 more

Serving Oswego, IL and surrounding areas

Approved

In business since 1972

Free estimates

Emergency services offered

"Home Comfort Systems was professional, honest and fairly priced. Steve Bilica (owner) came out to give me an estimate on a new furnace. He made me feel comfortable, which is important to me as a single woman. His estimate was the lowest of three I obtained ($4150) and he was so honest, he advised that my current unit didn’t need replacing yet. (The only reason I was getting estimates was because some other cut-throat company told me I needed a new one...for $11k!!...due to a cracked heat exchanger. However, all the other companies I contacted for estimates said I did NOT have a cracked heat exchanger.) I decided not to get a new furnace in the end. It’s been running great, although I did need a new blower motor about five months after the estimate, so Jeff D installed it for me ($385). Way cheaper than a whole new unit, so I’m happy. I’ll definitely go with this company again for repairs and when it’s time for a new furnace."
Additional Photos
Response time8 hrs
Response rate100%
10 neighbors recently requested a quote
Avatar for Four Seasons Heating & Air Conditioning
Four Seasons Heating & Air Conditioning
4.3(
3,298
)
Gas Furnace / Forced Air Heating System - InstallDucts & Vents - Install or ReplaceElectric Furnace / Forced Air Heating System - Install - For Business+43 more

Serving Oswego, IL and surrounding areas

Approved (Corporate)

In business since 1971

Free estimates

Emergency services offered

"On a Cold and Snowy 2nd day of Spring 2020, my heating system went out and got really cold in the house. Called Four Seasons to come out for an immediate repair. Four Seasons was able to come out within 2 hours. Technician was very knowledgeable and fixed the the problem right away and my furnace was up and running before the freezing night came. Thanks, Four Seasons!"
Additional Photos
Additional Photos
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Response time9 hrs
44 neighbors recently requested a quote
Recommended by86%of homeowners
Midwest Climate Control
4.4(
87
)
Gas Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - RepairThermostat - Install or Replace+16 more

Serving Oswego, IL and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

"Don came out & fixed the issue with the gas leak coming out of the furnace within 15 minutes. He then helped with my Nest thermostat that reset & wasn't turning back on. He was very courteous & knowledgeable."
Response time2 days
18 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Best Rates Heating and Cooling
Best Rates Heating and Cooling
4.8(
144
)
Gas Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - Repair+1 more

Serving Oswego, IL and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"I needed a new air conditioner for this coming spring and summer I had a couple companies lined up to come to my home here in Bolingbrook, from Best rates heating and cooling from Oswego came out with his daughter, and he noticed that the furnace was giving issues. He asked me if there was anything going on, the amazing part about it is I went down with both of them even his young daughter who is nine years old asked his father and said hey Papa, the furnace is not supposed to be making that booming sound right thatâ s when I knew that I was gonna be going with this company for his daughter to know at such a young age how a furnace should operate he responded with. Itâ s not operating well but weâ re going to figure it out. Keep in mind I had called him for the air conditioner on he checked the age of the unit and the brand-name and he brought me up to speed. My unit was 14 years old after he said what was causing the booming sound was that I had a flexible gas line and he said that he would repair it for me. He also went above and beyond and check the inside of the furnace and the condition with his camera and I saw that it was rusting up in the inside. His professionalism was great he said we can continue to the just AC If you would like to, but you may only have a couple years left. He gave me both options for both. I went forward with him. Right away You canâ t shop that type of customer service. The morning of the install it was raining I thought to myself maybe they will reschedule Shirley enough. They showed up at 7 AM at my doorstep ready to rock â nâ roll. Ish and General Sir good morning and put down flooring cloths and they continue to do the install even in the rain. These guys worked hard and Iâ m excited to use my new Wi-Fi thermostat. They even help me and was patient enough to set it up the WiFi thermostat because I forgot the password and the installation is Came out perfect way better then I expected. Definitely recommend them.! Ask for ISH!!!!! Thanks guys"
Project Photos
Response time10 hrs
23 neighbors recently requested a quote
Recommended by91%of homeowners
Long Shun HVAC and Refrigeration Inc.
4.3(
126
)
Gas Boiler or Radiator Heating System - RepairGas Furnace / Forced Air Heating System - RepairGas Furnace / Forced Air Heating System - Repair - For Business

Serving Oswego, IL and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

"Pump was out on my water heating radiator furnace. Sam came the next day on time, made the determination, got me a quote, ordered the parts and fixed next day on my schedule. Full trust in Sam!"
Response time3 hrs
Response rate95%
1 neighbors recently requested a quote
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FAQs for furnace / forced air heating system install or replace projects in Oswego, IL

Converting from an oil furnace to an electric furnace isn't a simple swap—the oil system needs to be completely removed before installing the electric furnace. You'll need a full electric system installation, but you might be able to reuse existing ductwork if it's up to current safety standards. You’ll need to budget for a new electric furnace installation, which costs between $1,800 and $6,200, including professional removal, proper disposal, and safe installation of the new system.

Electric furnaces are 100% efficient at converting electricity into heat. However, some of that heat can be lost as it travels through your home's ductwork or escapes through poorly insulated areas. That's why regular duct maintenance and proper home insulation are important to maximize your furnace's efficiency and reduce heat loss, ensuring consistent warmth and lower energy costs.

With proper maintenance, an electric furnace can last anywhere from 20 to 30 years, outlasting the average gas furnace's lifespan of 15 to 20 years. To keep your electric furnace running efficiently, schedule regular cleanings, tighten connections, and have inspections done before winter arrives. With routine maintenance, you’ll ensure consistent, safe heating for years to come.

The size of the electric furnace you need depends on factors like your home's square footage, climate, and insulation quality. As a general guideline, those who live in warmer climates should multiply their square footage by 30 to 35 BTUs, while those in cooler areas should multiply it by 50 to 60 BTUs.

Consulting with an HVAC professional can help you determine the exact size that's right for your home.

An electric furnace works by converting electricity into heat using high-resistance heating elements. A blower then pushes the warm air through your home's ductwork, distributing heat evenly throughout your space. Since there's no combustion involved, electric furnaces eliminate the risks associated with gas furnaces and provide consistent, reliable heating when properly installed.

An electric furnace uses between 40 and 80 kilowatts per day to heat your home. The exact amount it uses depends on factors like your home's size, insulation, and overall energy requirements. Larger homes or those with poor insulation use more energy than smaller, well-insulated spaces. A professional furnace assessment can help confirm the ideal unit size for your needs.

The Oswego, IL homeowners’ guide to furnace / forced air heating system installs or replaces

From average costs to expert advice, get all the answers you need to get your job done.