Business Details
27 Years
experience
Emergency
services
Trusted HVAC Services in Fond Du Lac, WI
Fondy Heating has been a trusted provider of heating, ventilation, and air conditioning solutions in Fond Du Lac since 1999. Our family-owned business combines decades of hands-on experience with a commitment to personalized service, ensuring every client receives tailored solutions for residential and commercial spaces. As a Carrier dealer, we offer cutting-edge equipment designed to enhance comfort and energy efficiency. Our licensed technicians provide 24/7 emergency repairs, preventive maintenance, and expert installation of HVAC systems, serving local communities with unmatched reliability. We prioritize customer satisfaction through transparent communication, skilled craftsmanship, and a deep understanding of regional climate challenges. By maintaining rigorous safety standards and leveraging advanced diagnostic tools, we deliver long-lasting results that protect both property and occupant well-being.Our preventive maintenance programs help minimize breakdowns, while our sheet metal fabrication services ensure precise system integration. Over 19 five-star reviews attest to our dedication to resolving complex HVAC issues promptly and professionally. We believe in building lasting relationships through ethical practices, competitive pricing, and unwavering support for every system we install. Whether upgrading aging equipment or designing new installations, Fondy Heating remains committed to technical excellence and community service, ensuring every client breathes easier knowing their comfort system is in expert hands.
Services
HVAC Installation
Emergency Repairs
Preventive Maintenance
Sheet Metal Fabrication
Indoor Air Quality
Details
- Year established: 1999
Highlights and features
- We operate 24/7 to handle HVAC emergencies promptly
- Family-owned business with 25 years of local experience
- Authorized Carrier dealer offering premium equipment
- Licensed technicians utilize advanced diagnostic tools
- Preventive maintenance programs extend system longevity
What people say
Very professional and efficient
Helpful and friendly technicians
Reliable contractor for HVAC needs
Completed repairs promptly
Would recommend to others
Services
HVAC Installation
Our HVAC installation service ensures precise system sizing using industry-approved load calculations to maximize energy efficiency and comfort. Technicians follow strict manufacturer guidelines while considering ductwork specifications, insulation levels, and occupancy patterns. We guarantee proper refrigerant charging and electrical connections while offering lifetime labor warranties on select Carrier models, ensuring decades of reliable operation when combined with regular maintenance.
Preventive Maintenance
Comprehensive maintenance programs include multi-point inspections covering burner assemblies, blower motors, refrigerant levels, and safety controls. Our technicians clean critical components, test electrical connections, and calibrate thermostats during seasonal tune-ups. Regular maintenance improves system efficiency by up to 30%, reduces emergency repair risks by 65%, and helps maintain manufacturer warranties through documented service history.
Indoor Air Quality
We offer whole-home air purification solutions combining HEPA filters, UV germicidal lights, and smart ventilation systems to reduce allergens and pathogens. Our technicians install humidity control systems maintaining optimal 30-50% moisture levels and carbon monoxide detectors meeting EPA safety standards. These solutions address specific concerns like pet dander, volatile organic compounds, and HVAC-borne bacteria for improved respiratory health.
Sheet Metal Fabrication
Custom sheet metal fabrication services create precision duct components matching system specifications. We use galvanized steel and aluminum alloys meeting ASTM A653 standards for corrosion resistance. Technicians employ computer-aided design software to optimize airflow patterns while minimizing static pressure loss. Properly sized ducts improve system efficiency by 20-35% and ensure even temperature distribution throughout the building.
24/7 Emergency Repairs
Emergency HVAC repair service operates continuously with on-call technicians averaging 1-hour response times. Our team handles critical issues like furnace failures, refrigerant leaks, and electrical malfunctions using fully stocked service vehicles. We guarantee same-day repairs for 85% of common issues while providing transparent pricing and temporary heating solutions during extended repairs.
Questions
Do you offer emergency HVAC services?
Yes, we provide 24/7 emergency HVAC repairs with technicians available year-round for urgent heating or cooling issues.
What payment methods do you accept?
We accept cash, check, financing with approved credit, and credit cards (with a 4% fee for transactions over $1,000).
Which areas do you service?
We serve Fond Du Lac and surrounding communities including Oshkosh, Waupun, and St. Cloud across central Wisconsin.
Are financing options available?
Yes, we offer financing plans for HVAC installations and major repairs with approved credit applications processed quickly.
Do you service all HVAC brands?
Our technicians work on all major HVAC brands, providing repairs and maintenance regardless of original installation source.
What Carrier® products do you carry?
As an authorized Carrier® dealer, we offer their complete line including air conditioners, heat pumps, furnaces, and smart thermostats.
Reviews (4)
Brian Schwartz
Jul 07, 2021
Report
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
Report
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
Riley O'Hearn
Aug 08, 2018
Report
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
Chrissi Lefeber
Jul 21, 2016
Report
Wonderful service. Here in a timely manner. Ron was super friendly and took time to explain the problem completely. Will always use Fondy Heating and Air now as my go to guys!
