Furnace Services
Reliable winter heating for your home.
- Emergency Service
- Est. 1990
- Family-Owned for 3 Generations
- Father & Son Operated
Why Illinois Homeowners Trust AccuMax for Furnace Service
A functioning furnace is essential in Illinois winters. When your system fails, you need fast, reliable repair. When you're ready to upgrade to a high-efficiency model, you need expert installation. AccuMax, Inc. brings three decades of heating expertise to furnace repair, maintenance, and new installation. We diagnose problems accurately, stand behind our work, and keep Naperville, Downers Grove, Plainfield, Batavia, and Oak Brook families warm through every winter.
Winter Emergency Response You Can Count On
Furnace failure in January means a cold home and potential health risk. We prioritize emergency calls during heating season, and many homes receive same-day technician response. We understand the urgency.
Complete Heating System Expertise
Furnaces are complex — gas burners, heat exchangers, blowers, controls, and safety systems all work together. Our technicians understand the full system and diagnose root causes, not just symptoms. That expertise saves you money on repairs.
Quality Installation Means Efficiency and Longevity
A new furnace installed poorly will never reach its rated efficiency. We install to manufacturer specifications, ensure proper ductwork airflow, set controls correctly, and verify performance before we're done. Your system works as designed.
Armstrong Air Partnership Means Quality You Trust
We install Armstrong Air furnaces with factory warranty and our membership plan protection. You're not guessing about reliability — you're backed by a trusted manufacturer and our service guarantee.
Furnace Solutions
Explore our furnace repair, maintenance, and installation services, or request your consultation below.
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Our Complete Furnace Service Portfolio
Furnace Repair & Emergency Service
Your furnace won't ignite, produces weak heat, cycles on and off too frequently, makes unusual noises, or has a cracked heat exchanger? We diagnose the problem and repair it. We prioritize heating emergencies and work quickly to restore your comfort. All repairs are backed by a workmanship warranty.
- Accurate diagnosis of ignition, burner, and heat exchanger issues
- Emergency heating service prioritized during winter season
- Repair of weak heat, short cycling, and unusual noises
- Safety inspection included with every service call
- All repairs backed by a workmanship warranty
Furnace Maintenance & Fall Tune-Ups
Preventive furnace maintenance before winter heating season catches problems early and keeps your system running efficiently. Tune-ups include burner inspection, heat exchanger check, airflow verification, control system test, and safety verification. Schedule annual maintenance to avoid mid-season breakdowns.
- Burner inspection and cleaning for efficient combustion
- Heat exchanger check for cracks and safety concerns
- Airflow verification and filter replacement
- Control system and thermostat calibration test
- Full safety verification before heating season
- Annual maintenance scheduling to prevent mid-season failures
Furnace Installation & System Replacement
An aging furnace or one that breaks frequently? Modern high-efficiency furnaces use less gas, heat your home more evenly, and often qualify for utility rebates. We handle professional installation, explain rebate options, and include extended warranty through Maintenance Membership Plan.
- Professional removal and disposal of old equipment
- Proper sizing based on square footage, insulation, and climate
- Installation to manufacturer specifications for peak efficiency
- Ductwork evaluation and optimization
- Rebate paperwork coordination for maximum savings
- Extended warranty through Maintenance Membership Plan
Affordable Financing & Rebates on Your New Furnace
A new high-efficiency furnace is a major investment — and it shouldn't strain your budget. AccuMax, Inc. offers flexible financing through Service Finance Company and helps you capture every manufacturer and utility rebate your new system qualifies for.
Flexible Financing Through Service Finance
With approved credit from Service Finance Company, you'll enjoy:
Replace or upgrade your HVAC system without the sticker shock. Break the cost into affordable monthly payments that fit comfortably in your budget.
What you see is what you pay. Your financing terms are laid out clearly from day one, with no surprise charges down the road.
Check your balance, view statements, and make payments anytime through Service Finance's secure online portal — no phone calls or paperwork required.
Qualified homeowners may be eligible for promotional rates, including low-interest and deferred-payment options. Ask us about current offers when you schedule your estimate.
Questions about financing? Call us at (630) 800-1598 and we'll help you find the right option before you commit.
Rebates Available on Heat Pump Systems
Aurora homeowners upgrading to a qualifying heat pump system may be eligible for up to $2,000 in available rebates. Rebate programs and eligibility requirements change regularly based on manufacturer and utility incentive schedules. Contact AccuMax, Inc. early in your project — we'll help you identify what's currently available for your home and make sure you capture every rebate dollar before the opportunity closes.
Keep Your Furnace Running Efficiently All Winter
Annual preventive maintenance is the best way to protect your furnace investment. An AccuMax, Inc. maintenance plan keeps your furnace at peak efficiency, protects your warranty, and catches small issues before they become costly mid-winter breakdowns.
Take $40 off a second plan if you have another system. Cancel any time — the unused portion of your dues is refunded.
Our HVAC Specials & Seasonal Offers
AccuMax, Inc. regularly offers seasonal specials and savings for homeowners in Aurora, Naperville, Downers Grove, and throughout our service area. Whether you're scheduling a tune-up, planning a system replacement, or looking to improve your indoor air quality, there's often a current offer that can help you save.
$149 Value Menu
Add any service from our Value Menu for just $149 when we're already at your home. Every option is one flat price — see how much you save compared to regular rates. Ask your technician about available add-ons at your next visit.
See the Value MenuOriginal Price
Questions About Furnace Services
Modern furnaces have AFUE (Annual Fuel Utilization Efficiency) ratings of 90–95%, meaning 90–95 cents of every dollar of gas heats your home. Older furnaces may be 70–80% efficient. A new furnace often pays for itself in energy savings over 10–15 years, especially if your current system is 15+ years old.
A furnace sized too small won't heat your home adequately. One sized too large cycles on and off too frequently, wasting energy and reducing comfort. Proper sizing requires calculating your home's heat loss based on square footage, insulation, climate, and other factors. We size furnaces correctly to ensure optimal performance.
Furnace safety is critical. Gas leaks, carbon monoxide, and improper combustion are serious risks. Our technicians include safety inspections in all service calls and maintenance visits. If we find safety issues, we address them immediately. We strongly recommend annual maintenance to keep your system safe.
Yes. A new furnace won't perform well if your ductwork is undersized, leaky, or poorly designed. We evaluate your ducting and recommend improvements when they'll significantly improve efficiency and comfort. Proper ductwork is essential to getting the full benefit of a new high-efficiency furnace.
Modern high-efficiency furnaces can save 15–30% on heating costs compared to older, less efficient models. Variable-speed blowers and modulating burners also provide more consistent comfort and quieter operation. Many new installations also qualify for federal or utility rebates.
Yes. We prioritize emergency furnace calls during heating season. Many homes receive same-day technician response when the furnace fails in cold weather. Call us at (630) 800-1598 for emergency heating service.
Furnace Service Across Aurora & the Western Chicago Suburbs
AccuMax, Inc. provides expert furnace repair, maintenance, and installation throughout Aurora and the western suburbs — diagnosing problems accurately, installing systems correctly, and backing every job with membership plan protection.
Additional Communities Served
Don't see your city listed? We serve many additional communities throughout the western suburbs — contact us to confirm availability in your area.
Complete Your Furnace Investment
Whether you need emergency repair, seasonal maintenance, or a new high-efficiency system, AccuMax has you covered from installation through long-term care.
Schedule Your Furnace Service or Consultation Today
Whether you need emergency winter repair, want to schedule fall maintenance before heating season starts, or are considering a new high-efficiency furnace, AccuMax, Inc. is ready to help. We serve Naperville, Downers Grove, Plainfield, Batavia, and Oak Brook with expert furnace service and honest recommendations.
Our three generations of HVAC expertise, Armstrong Air ProTeam certification, and commitment to quality installation mean your furnace will perform as designed — keeping your family warm and your energy bills in check through every Illinois winter.
Family-Owned Since 1990
Three generations of HVAC expertise rooted in Aurora
Armstrong Air ProTeam Dealer
Factory-trained and certified on the equipment we install
Emergency Service Available
Weekends and after-hours when you need us most
Full-Service HVAC
Heating, cooling, IAQ, water heaters, and light commercial RTUs
Community-First Values
Locally based, personally accountable, invested in Aurora