Business Details
27 Years
experience
Emergency
services
Trusted HVAC Solutions for Homes and Businesses in Fond Du Lac
Fondy Heating has been a trusted provider of HVAC solutions in Fond Du Lac and surrounding communities since 1999. Our family-owned business combines decades of hands-on experience with a commitment to personalized service, ensuring every client receives tailored heating, cooling, and air quality solutions. As licensed contractors, we specialize in new installations, emergency repairs, and preventive maintenance, backed by a team of certified technicians available 24/7.We pride ourselves on transparency, using high-quality Carrier products and customizing systems to meet each client's unique needs. Our focus on long-term relationships is reflected in our 19 five-star reviews, highlighting prompt service, clear communication, and lasting results. With a dedication to both technical excellence and customer satisfaction, we aim to be the only HVAC partner our clients ever need.
Services
HVAC Installation
Emergency Repairs
Preventive Maintenance
Sheet Metal Fabrication
Indoor Air Quality
Thermostat Services
Boiler Repair
Ductless Systems
System Replacement
Carbon Monoxide Detection
Details
- Year established: 1999
Highlights and features
- Family-owned and operated since 1999 with deep local expertise
- 24/7 emergency service available for urgent HVAC needs
- Licensed contractors with specialized HVAC knowledge
- Preventative maintenance programs to extend system lifespan
- Serving Fond Du Lac and 15+ surrounding communities
What people say
Great job
Professional
24/7 service
Reliable
Excellent service
Services
HVAC Installation
We specialize in properly sizing and installing heating and cooling systems tailored to your home's unique requirements. Our technicians calculate precise BTU needs, ductwork specifications, and efficiency ratings to ensure optimal performance. As a Carrier dealer, we offer advanced equipment with energy-saving features that reduce long-term operating costs while maintaining comfort.
Emergency Repairs
Our certified technicians respond to urgent HVAC failures within hours, available 24/7 for critical heating or cooling issues. We carry common replacement parts in our service vehicles to resolve most problems during the initial visit, minimizing downtime and preventing further system damage through rapid diagnosis and repair.
Preventive Maintenance
Our comprehensive tune-up program includes 14-point inspections for furnaces and 12-point checks for air conditioners. Regular maintenance extends equipment lifespan, improves energy efficiency by up to 30%, and helps identify potential issues before they become major failures, maintaining manufacturer warranty validity through documented service records.
Indoor Air Quality
We install and service air purification systems that remove 99.98% of airborne contaminants down to 0.3 microns. Our solutions include HEPA filters, UV light systems, and whole-house humidifiers/dehumidifiers that work with existing HVAC systems to create healthier indoor environments for allergy sufferers and families with children.
Sheet Metal Fabrication
Our in-house fabrication capabilities allow us to create custom duct solutions for unique installation requirements. We use galvanized steel and aluminum materials to construct durable, properly sized duct systems that improve airflow efficiency and reduce energy consumption compared to standard flexible duct installations.
Questions
What HVAC services do you offer?
We provide complete HVAC solutions including system installation, emergency repairs, preventive maintenance, indoor air quality improvements, and custom sheet metal fabrication for residential and commercial properties.
Are you available for emergencies?
Yes, our 24/7 emergency service responds promptly to urgent heating and cooling needs, with technicians available year-round for critical system failures.
Do you service all HVAC brands?
We repair and maintain all major HVAC brands, using factory-certified parts and following manufacturer guidelines to ensure optimal system performance and warranty compliance.
What areas do you serve?
We operate in Fond Du Lac and 15 surrounding communities including Oshkosh, Waupun, and Rosendale, providing consistent service within a 30-mile radius of our Fond Du Lac location.
Can I finance HVAC purchases?
Yes, we offer financing options with approved credit for HVAC system replacements and major repairs, with flexible terms to accommodate different budget requirements.
Reviews (4)
Brian Schwartz
Jul 07, 2021
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I found out the hard way about Fondy heating and air's unfair, unprofessional business practices. Take caution do yourself a favor and call one of the 20 plus other heating and air conditioning services in Fond du Lac county. After being over charged and try to resolve this billing mistake with an very unprofessional lady by the name tammy I requested to speak with the owner Mr. David Larson I just kept getting Mr. Larson is not in. tammy made it clear that Mr. Larson was never going to be available or return my calls. At this point I had to get my attorney involved. Just not worth the headaches
Molly Fairbank
Aug 30, 2020
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RUN!!!! I would give zero stars if I could. Absolute worst customer service from Tammy when I called to have my AC looked into. Made me feel as if I was inconveniencing her by calling on a Friday afternoon.
Technician Nate came Tuesday and said our AC condenser hose was plugged which pooled into our furnace and filter compartment. Nate then stated that it happens all the time and wanted to look at unit outside. Less than 3 minutes later, Technician Nate was seen leaving my property. With many questions, I called Fondy Heating for answers as to what the diagnosis was as water was still
Technician Nate came Tuesday and said our AC condenser hose was plugged which pooled into our furnace and filter compartment. Nate then stated that it happens all the time and wanted to look at unit outside. Less than 3 minutes later, Technician Nate was seen leaving my property. With many questions, I called Fondy Heating for answers as to what the diagnosis was as water was still
Steve Wyrobeck
May 28, 2020
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Positive:Professionalism,Punctuality
Great company, Tammy on the phone was very helpful in my accommodations. Give her a raise!
Service:Heating maintenance
Great company, Tammy on the phone was very helpful in my accommodations. Give her a raise!
Service:Heating maintenance
Riley O'Hearn
Aug 08, 2018
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I have never written an online review before but after the horrible service I received from Fondy Heating & Air it was required. Had them come do a furnace clean & check in which I had no issues on the furnace. After the guy came out a day later we noticed water leaking out of the furnace. When I called to have them come back to check, the lady on the phone was rude saying is it that bad because we are busy. The guy came out a few days later and noticed the trap hose cracked and said sorry it could have happened when I put the hose back on from the cleaning. He ordered new hose and
