Fitchburg’s Leading HVAC Services Provider
Fitchburg’s heating and cooling professionals
Fitchburg is close enough to Madison’s energy, yet far enough to enjoy peaceful neighborhoods and access to nature. But when your furnace dies in the middle of winter, or your air conditioner fails on the hottest day of the year, that comfort quickly disappears. You need someone you can trust to fix it fast — a reliable HVAC contractor in Fitchburg, WI who shows up on time, does the job right, and doesn’t overcharge you.
That’s where we come in. For over 70 years, Harker Heating & Cooling has been the HVAC contractor families and homeowners in Fitchburg count on for heating repairs, cooling maintenance, emergencies, and full system replacements. We’re not here to sell you something you don’t need. We’re here to provide honest assessments, affordable solutions, and service you can rely on 24/7.
Why Fitchburg Homeowners Trust Us as Their Local HVAC Contractor
We’ve been servicing the Fitchburg community since 1949, which means we’ve earned our reputation one customer at a time. When we say we understand Wisconsin winters and the heating challenges that come with them, we’re not guessing — we’ve been solving those problems for generations. Our team of certified HVAC specialists knows what it takes to keep your home comfortable year-round, whether that’s ensuring your furnace runs safely and efficiently through January or making sure your air conditioner keeps up during sweltering summer afternoons.
What sets us apart as your HVAC contractor in Fitchburg, WI isn’t just experience — it’s our commitment to integrity. We believe every homeowner deserves an honest assessment of their heating and cooling system without pressure to replace equipment that just needs repair. We’ll tell you what your system really needs, give you options, and help you make the decision that makes sense for your budget and your home’s comfort.
Expert Furnace Repair and Maintenance Services
Your furnace is one of the hardest-working systems in your home, especially in Wisconsin. When cold weather arrives, a properly functioning furnace isn’t a luxury — it’s essential. As your local HVAC contractor in Fitchburg, we provide comprehensive furnace services, from routine seasonal maintenance to emergency repairs and full system replacements.
Signs Your Furnace Needs Attention:
- Strange noises like banging, rattling, or grinding
- Uneven heating throughout your home
- A burning smell when the system first kicks on
- Higher than normal heating bills
- Your furnace is more than 15-20 years old
- Yellow or flickering pilot light (on gas furnaces)
- Cold air blowing from vents instead of warm air
Furnace Maintenance: Prevention is Key
We recommend annual furnace maintenance before winter arrives. During a maintenance visit, our technicians inspect your entire system, replace filters, check for gas leaks, verify proper airflow, and ensure everything is operating safely and efficiently. This simple step can catch small problems before they become expensive repairs, extend your furnace’s lifespan, and help you avoid a breakdown when you need heat most.
Many homeowners don’t realize that a dirty furnace filter can reduce efficiency by up to 15%, making your system work harder and costing you money every month. We’ll show you how often to change it and help you understand what signs mean your furnace needs professional attention.
Furnace Repair When You Need It Most
When your furnace stops working, we understand the urgency. That’s why we offer 24/7 emergency heating repair throughout Fitchburg and the surrounding areas. Call us any time — day or night, weekends or holidays — and we’ll dispatch a certified technician to diagnose and fix the problem. We carry common parts on our trucks, so we can often complete repairs the same day you call. No heating system failure should leave your family shivering in the cold.
When It’s Time to Replace Your Furnace
If your furnace is aging, frequently breaking down, or producing high energy bills despite regular maintenance, replacement might be the right choice. We’ll walk you through your options, explain the difference between efficiency ratings, and help you find a system that fits your budget. As a Carrier Factory Authorized Dealer, we install top-quality heating systems backed by solid warranties.
Providing routine furnace maintenance to bigger fixes
When temperatures begin to drop in Fitchburg, it can seem like a daunting task to get your furnace back in working order. But it’s important to ensure your furnace is as safe, functioning and energy efficient as possible. Fortunately, our HVAC specialists are available for routine furnace maintenance. Harker’s furnace experts will inspect your furnace unit, change your filter, and ensure there are no dangerous leaks or problems that could affect the health of your family or home.
Harker provides heating maintenance, repairs and replacement services for:
- Furnace systems
- Gas and oil boilers
- Fireplaces
- Heat pumps
- Garage heaters
- Geothermal heat pumps
- Radiant heat systems (must connect to a boiler)
Be on the lookout for strange noises, cold blowing air, funny smells; these are all signs of a furnace breakdown. And if your furnace happens to go on the fritz, you know who to call.
Air Conditioning Repair and Maintenance in Fitchburg
Your furnace isn’t the only piece of equipment that needs regular routine maintenance — so does your air conditioner. Up to 80% of air conditioning compressor issues could be eliminated if the problems that lead up to the a/c breakdown were addressed in a timely fashion. At Harker, we suggest calling for an air conditioning inspection in spring. Regular a/c maintenance can help your system run longer, and ensure that you’re not paying more in energy costs than you should. A dirty air conditioner, for example, can more than double your bills, without providing you with a cool and comfortable home.
HVAC experts suggest homeowners change their A/C unit’s air filter every 60-90 days — especially if you own pets. Otherwise, your air conditioner unit could start to collect direct and affect its functionality.
If you’ve already replaced the air filter and still notice low airflow, condensation, or increasing energy bills, call the A/C specialist at Harker. We can help identify and fix the problem, fast.
Common Air Conditioning Problems We Solve:
- System not cooling or only cooling slightly
- Weak airflow from vents
- Strange noises or odors
- Water pooling around the indoor unit
- High humidity levels inside your home
- System turning on and off frequently
- Uneven cooling in different rooms
Air Conditioning Maintenance: Maximize Efficiency and Lifespan
We recommend scheduling air conditioning maintenance in spring, before the cooling season kicks into high gear. During maintenance, we inspect your outdoor condenser unit, check refrigerant levels, clean coils, inspect electrical connections, and verify system operation. A well-maintained air conditioner runs more efficiently, uses less energy, and lasts longer.
Many people don’t realize that a dirty air filter can reduce cooling efficiency significantly — some studies show it can double your energy costs. We’ll help you stay on top of filter changes and other maintenance tasks that keep your system running smoothly.
Air Conditioning Repair Services
If your air conditioner isn’t cooling properly, we’re here to find and fix the problem. Whether it’s a refrigerant leak, a faulty compressor, a failing capacitor, or a clogged condenser coil, our certified technicians have the expertise to diagnose the issue and recommend the best solution. We work fast so you can get back to enjoying cool, comfortable air.
24/7 Emergency HVAC Repair in Fitchburg
Heating and cooling emergencies don’t happen during business hours — they happen at 2 AM in January or on the hottest day of summer. That’s why we offer round-the-clock emergency HVAC service. When your system fails and you need help immediately, we’re available 24 hours a day, 7 days a week, 365 days a year.
Call us at (608) 255-6902 anytime you need emergency heating or cooling repair. We’ll respond quickly, diagnose the problem, and get your system back up and running. Our goal is to restore your home’s comfort as fast as possible.
Indoor Air Quality Solutions for Healthier Homes
Furnaces and air conditioners keep your home comfortable, but they don’t necessarily keep the air clean. Because modern homes are built tight for energy efficiency, they can trap pollutants, allergens, pet dander, and moisture inside. If you or your family members suffer from allergies, asthma, or respiratory issues, poor indoor air quality might be the culprit.
As your trusted HVAC contractor in Fitchburg, we offer comprehensive indoor air quality solutions:
- Air filtration systems that capture allergens and pollutants
- Whole-home humidifiers and dehumidifiers to maintain optimal moisture levels
- Air purifiers and ionization systems to eliminate odors and improve air quality
- Ventilation solutions to bring fresh air into your home while maintaining energy efficiency
- Duct cleaning services to remove years of dust and debris
A simple upgrade like a higher-efficiency air filter or the addition of a whole-home air purifier can dramatically improve your home’s air quality and the health of your family.
Protecting your family with indoor air quality solutions
Living in Fitchburg, with its vast network of parks and recreation trails, there is always a reason to get up and head outside as a family. But winter leaves many of us wanting to curl up at home, instead. This can lead to poor indoor air quality.
Because homes are built to be energy efficient — keeping warm air out in the summers, and keeping out the cold in winter — they are also built to keep out health, fresh air, allowing pollutants, allergens and pet dander to build up and cause health concerns.
Despite popular belief, furnace and air conditioning filters don’t actually clean your home’s air. To keep your home free of indoor air quality problems, you should:
- Dust and vacuum regularly;
- Use non-toxic cleaning products and low-to-no VOC chemicals; and
- Install an air purifier.
Harker’s IAQ specialists can help you figure out whether a portable air purifier is best, or if your home is better suited for a whole-home air cleaning system.
No hot water? Harker can help
When you live in a city that sees subzero winter temperatures, there’s nothing worse than waking up with hot water heaters, or no water at all. Don’t get left in the cold — call Harker’s team of hot water heater experts. A water heater may be showing signs of trouble if:
- Your hot water heater is more than 10 years old;
- Your heater is making strange noises, such as rumbling or knocking;
- You notice rust-colored water, which indicates corrosion; or
- Water is beginning to pool around the tank.
Our HVAC technicians can repair and replace electric and gas hot water heaters at a cost and timeline that’s reasonable for you, so you can get back to relaxing in a hot shower fast.
Visit our showroom to see the latest home heating & cooling equipment on the market.
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Answers to Common HVAC Questions
How often should I have my HVAC system maintained?
We recommend professional HVAC maintenance at least once a year. Ideally, schedule furnace maintenance in the fall before heating season, and air conditioning maintenance in the spring before cooling season. If you have a heat pump or live in a climate where you use both heating and cooling regularly, twice-yearly maintenance is even better.
What’s the difference between HVAC repair and replacement?
Repair addresses a specific problem — a failed capacitor, a refrigerant leak, or a broken compressor. Replacement means installing a new system. If your system is older than 15 years, breaks down frequently, or uses expensive R-22 refrigerant (being phased out), replacement often makes more financial sense than continued repairs. We’ll help you evaluate what’s best for your situation.
How much does HVAC maintenance cost?
Regular maintenance is an investment that pays for itself through improved efficiency and fewer emergency repairs. Most homeowners find that annual or semi-annual maintenance costs far less than dealing with a breakdown at an inconvenient time. We’ll provide you with a clear estimate before any work begins.
Why is my air conditioner not blowing cold air?
There are several possibilities: low refrigerant, a faulty compressor, a clogged condenser coil, a broken expansion valve, or even just a tripped circuit breaker. Our technicians will diagnose the exact cause and recommend the most cost-effective fix.
What signs mean I need a new furnace?
If your furnace is 15-20 years old, requires frequent repairs, produces a yellow pilot light flame (on gas models), makes unusual noises, or causes uneven heating throughout your home, it might be time to consider replacement. Newer furnaces are significantly more efficient, which can lower your heating bills by 20-30%.
Why Choose Harker Heating & Cooling as Your Fitchburg HVAC Contractor?
Integrity and Honesty. We don’t pressure you into replacements you don’t need. We provide honest assessments and let you decide what’s right for your home and budget.
Years of Experience. We’ve been serving Wisconsin families since 1949. That longevity means we’ve seen every problem and know the best solutions.
24/7 Availability. Emergencies don’t wait for business hours, and neither do we. We’re here whenever you need us.
Certified Technicians. Our team is trained, certified, and committed to doing the job right the first time.
Competitive Pricing and Financing. We offer affordable rates and flexible financing options so you can afford the comfort your home deserves.
Fast, Reliable Service. We show up on time, work efficiently, and complete most repairs the same day.
Carrier Factory Authorized Dealer. We install and service high-quality equipment backed by solid warranties.
Get the HVAC Service You Deserve in Fitchburg
Whether you need emergency repair, routine maintenance, or a complete system replacement, Harker Heating & Cooling is your trusted HVAC contractor in Fitchburg, WI. We’ve earned the trust of thousands of homeowners in our community, and we’d like to earn yours.
Don’t wait until your furnace fails in the middle of winter or your air conditioner stops working in the summer heat. Call us today to schedule maintenance, request a repair, or get a free in-home estimate for a new system.
Call us at (608) 255-6902 or book online anytime — we’re available 24/7 to serve you.
We look forward to keeping your home comfortable all year long.
