Johnstone Supply
From $50
Up to $500
Open 7:00 AM – 4:30 AM
In North Fond Du Lac, we're more than just a HVAC supplier – we're your reliable partner for heating and air conditioning systems. At our family-o…
Compare top-rated hvac providers in North Fond Du Lac. Profiles include verified reviews, service details, and direct contact options.
From $50
Up to $500
Open 7:00 AM – 4:30 AM
In North Fond Du Lac, we're more than just a HVAC supplier – we're your reliable partner for heating and air conditioning systems. At our family-o…
From $50
Up to $500
Closed until Thu, 7:30 AM
At E. C. Merrill, Inc. in North Fond Du Lac, we specialize in HVAC services, providing reliable solutions for your home comfort needs. Whether it'…
These companies are based in nearby cities and serve North Fond Du Lac.
From $50
Up to $500
Closed until Thu, 7:30 AM
In Fond du Lac, we are Fondy Heating & Air Conditioning - your reliable partner in HVAC services. We specialize in keeping your home comfortable a…
From $50
Up to $500
Open 24/7
In Fond du Lac, we are Ziegelbauer HVAC Inc., your reliable partners in all matters related to heating, ventilation, and air conditioning (HVAC). …
From $50
Up to $500
Closed until Thu, 8:00 AM
In Fond du Lac, we are Wesley Heating & Cooling - your reliable partner for HVAC services. Homeowners turn to us for expert solutions in air condi…
From $50
Up to $500
Closed until Thu, 8:00 AM
In countless Fond du Lac households, clean air ducts are a beacon of health and comfort. At Wisconsin Natural Air Duct Cleaning, we specialize in …
From $50
Up to $500
Closed until Thu, 8:00 AM
At Caldera A/C & Heating LLC in Fond du Lac, we specialize in providing comprehensive HVAC services to homeowners. Our expertise lies in HVAC cont…
From $50
Up to $500
Open 24/7
At homes in Fond du Lac, a consistent issue homeowners face is ensuring their HVAC systems are running smoothly. That's where we come in – Air Tec…
From $50
Up to $500
Open 7:00 AM – 4:00 PM
At Hilbert's Refrigeration Heating in Fond du Lac, we specialize in HVAC services, focusing on air conditioning solutions. Our team is dedicated t…
From $50
Up to $500
Open 7:00 AM – 4:00 PM
In Fond du Lac, at BMI HVAC Supply, we specialize in providing top-tier heating and air conditioning solutions for your home. We are committed to …
From $50
Up to $500
Open 7:00 AM – 3:30 PM
At Chimney Medics LLC in Fond du Lac, we understand the importance of a safe and clean chimney for your home. We specialize in providing comprehen…
From $50
Up to $500
Closed until Thu, 7:30 AM
In Eden, we're more than just a heating and cooling company—we're your neighbors. For years, our HVAC services have been keeping homes comfortable…
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Hiring an HVAC professional is a decision about your budget, your comfort, and sometimes your safety — so it deserves more than an impulse phone call. This is the short version of how we'd approach it, and the exact criteria embedded in every GigoPro profile.
Ratings tell you the average; recent reviews tell you the truth about right now. Read the last handful of reviews for a company, not just the stars. A contractor who fixes the reported problem, explains what was done, and leaves the site clean is the one you can trust with a multi-thousand-dollar decision.
Confirm the company actually performs your specific job — a residential AC repair shop is not automatically a commercial rooftop specialist, and vice versa. Check that your address is inside its service area, and look for stated response times if your situation is urgent.
Reputable pros will inspect, then give a written, itemized estimate — clearly stating labor, parts, and any permit costs. Price differences between honest quotes reflect equipment brands, warranty terms, and installation quality, so never choose on the bottom line alone. Ask what each quote includes and what it excludes.
Licensing and insurance requirements differ from state to state and shift over time. In regulated jurisdictions, ask for the company's license number and proof of insurance before work begins — never after. Professional companies expect these questions and answer them without hesitation.

Whether your air conditioner stopped on the hottest day of the year, your furnace is cycling on and off in January, or you are planning a full system replacement for your home or business — this page is your starting point. GigoPro's hub gathers verified heating, ventilation, and air conditioning contractors from cities across the United States in one place, so you can stop calling around and start comparing on facts.
Every company you find here lists what it actually does: air conditioning repair and installation, furnaces and heat pumps, ductwork and ventilation, indoor air quality, commercial HVAC maintenance, and emergency call-outs. Each profile shows the services offered, the area the company serves, recent customer reviews with ratings, and contact details — so you can shortlist three or four pros, request written estimates, and book the one that fits you best.
Quality on Gigo is not self-declared. Before any business appears in search results, we moderate the profile: we verify that the company is real, actively operating, and actually operates in the category it claims; for regulated trades, we verify proper credentials. Listings that stop being active are hidden automatically. That is what "verified near you" should mean, and it is why tens of thousands of homeowners 100 000 start their search here every month.
Pick your city below to see local providers, ratings, and current availability — or read on to learn about the services, get a simple contractor-hiring checklist, and find out what to expect before you book.
The contractors in this directory cover every part of that equation, from a quick fix to a full replacement. Here is what each type of service involves, and when you are likely to need it.
Central AC repair covers everything from a tripped breaker and a refrigerant leak to a failing compressor or a blower motor that needs replacing. If your system is older than 12–15 years [verify & localize], or repairs keep adding up, a new installation — including ducted central systems and ductless mini-splits — can be the smarter long-term call. Companies listed here service AC units of every age and brand, so a technician visit starts with a proper diagnosis, not a sales pitch.
Furnaces, boilers, and space heaters keep your home livable through winter. Typical jobs: no-heat emergencies, noisy operation, pilot and ignition problems, carbon-monoxide safety checks, and full furnace replacement. Annual pre-winter maintenance is the cheapest insurance you can buy against a breakdown in freezing weather. If your heat stops working, prioritize companies that list emergency or same-day response in their profile.
Heat pumps heat and cool from the same efficient unit — air-source systems are the most common, with ground-source (geothermal) options for larger projects. Contractors in this category install, repair, and replace heat pumps, size them correctly for your home, and handle the ductwork modifications that a switch from a furnace often requires. If you are replacing an aging system, a heat pump conversion is worth having with two or three licensed pros before you decide.
Your ducts carry every degree of comfort to every room. Duct cleaning removes dust and debris that builds up over years; duct sealing stops the leaks that let conditioned air escape into attics and crawl spaces; and duct repair or replacement fixes crushed, disconnected, or rodent-damaged runs. If rooms in your house never quite reach the set temperature, airflow problems are often the culprit — worth checking before you blame the system itself.
Modern HVAC work goes beyond temperature. Air purifiers, whole-home filtration, humidifiers and dehumidifiers, ventilation and fresh-air systems, and UV treatments all change what you breathe. Companies offering indoor air quality services can test and improve air in homes with allergies, asthma, new paint or renovation dust, or simply poor circulation.
Offices, restaurants, retail spaces, and apartment buildings have very different needs than homes — rooftop units, package systems, and scheduled maintenance contracts that keep tenants comfortable and equipment warranties valid. The directory includes commercial HVAC contractors who can respond quickly when a business space loses heat or cooling, and who will quote preventative maintenance to avoid the midnight call-out later.
A spring tune-up before cooling season and a fall check-up before heating season catch small problems while they are still cheap to fix. Maintenance typically covers filter replacement, cleaning coils and burners, checking refrigerant charge, testing safety controls, and confirming airflow. Many companies publish maintenance plans in their profiles — compare what is included (and what an emergency visit costs) before you commit.
Systems break on weekends and holidays. Emergency-ready contractors keep after-hours teams for exactly the no-heat, no-cool, or gas-odor situations that can't wait until Monday. Check a company's profile for stated emergency availability and response policy before needing it — that is far easier than cold-calling on a Christmas morning.

GigoPro lists providers in 10171 cities across all 50 states. Each city page shows local air conditioning, heating, and ventilation companies with their ratings, recent reviews, service areas, and contact details — so you see exactly who operates near you before you call. Listings are moderated at signup and reviewed continuously; businesses that stop operating are removed, and new cities are added regularly.
We show only active businesses that pass moderation. Results are specific to North Fond Du Lac and nearby service areas, and inactive profiles are removed to keep the list current.
Ratings and reviews come from customers who used the service. Compare hvac pros in North Fond Du Lac by experience, responsiveness, and value before you reach out.
Filter by neighborhood, check locations on the map, and find providers close to home or work in North Fond Du Lac. Listings are refreshed regularly — August 2026.
Find verified hvac providers in cities across the United States. Each city page lists active businesses with reviews, contact details, and current offers. Showing the most active cities — type a city name in the filter to jump elsewhere.
Yes. Browsing businesses, reading reviews, and comparing providers is free for everyone. Business owners can create a basic listing at no cost.
Every profile goes through moderation before it appears in search. We check that the business is real, active, and matches the category it claims. For regulated trades, we look for proper credentials, and inactive listings are hidden automatically.
Start with ratings and recent reviews, then compare the services offered, location, and response time. Contact two or three providers, ask for written estimates, and compare what each quote includes — not just the bottom line.
Yes. Create a free business profile to reach local customers searching for your category. You can update your services, photos, and contact details anytime, and customers can book you directly from your profile.
Business owners update their own profiles. Our team also refreshes hub pages and removes inactive listings to keep search results current. This page, for example, is reviewed and updated monthly.
At minimum, once a year — ideally a spring tune-up before cooling season and a fall check-up before heating season. Systems that run year-round, older units, and commercial systems often benefit from professional service twice a year.
Ask each contractor for both a repair quote and an honest assessment of the unit's remaining life. As a general rule, if a repair costs more than a third of a new system, or your equipment is past its expected lifespan and breaking down repeatedly, replacement is usually the better value. Get two or three opinions before a decision this large.
Yes — many list emergency and same-day service in their profiles, with stated after-hours policies. Open the profile and check the response-time and availability information before you need it; in a real emergency, filter for companies that explicitly offer 24/7 service.
Costs vary by region, system type, and job — there is no honest single number. Reputable contractors provide written estimates after inspecting the system, and comparing two or three is the best way to understand what your job should cost.
Yes. After your job is done, you can rate the company and describe your experience. Verified reviews from recent jobs are exactly what helps the next homeowners in your city choose well — and what keeps listed professionals at their best.
Waste of time even tho they have the part to get me out of heat wave they won’t sell it to me want me to pay someone else another crazy markup and wait for them to be able to come to my house (got quote of two days to just look at it or extra $150 for rush which doesn’t mean now just faster than 2 days) to put in a part that has two wires to it like people are helpless and don’t understand basic mechanics, you are the problem with American businesses and why Amazon is winning I have the part coming from them faster than I can get a local serviceman to my house just to look at it.
Thank you for your amazing & quick service. We appreciate it & look forward to doing more business with you in the future!
Excellent service, they many times have parts in stock for equipment that the actual distributors for those brands do not have in stock. Always extremely helpful, courteous, and get things taken care of, in a very efficient and timely manner. This is a wholesale supply house selling only to licensed contractors who are insured.
We have had their service on more than one occasion, the always show up when they say they are going to. We were extremely happy when they were able to install our AC , no other businesses would even come and give us a quote.
I chose E.C based on the reviews. So I want to thank those before me for being honest. The service was great. I removed the fan on my air conditioner because themotor was so hot. When the tech came he could of made a comment, but he just put it back in and fixed what was wrong. Took more time to put the fan back then it didto fix the issue.
A/C went out this last hot stretch. Brian came out within a half hour of me calling. They sure did not need to attempt to fix the inefficient dinosaur that is my a/c unit, but knowing the forecast they did! Meanwhile, they patiently explained all my options for new. Pleasure to work with all of E.C. Merril; Brian he is a hard worker (outside when it's 90!), courteous, patient, cleans up after the work is done and makes sure I know what's going on.