At Thielmann Heating, Cooling, and Plumbing, we understand that your home is more than just a building; it’s where comfort, safety, and peace of mind come together. For over 90 years, we’ve proudly provided homeowners in Southeastern Wisconsin with reliable and innovative solutions tailored to their unique needs. From advanced heating systems to modern plumbing upgrades, we’re here to ensure your Franklin home runs efficiently all year long. Call us today at (262) 299-6197 and see why so many have turned to Thielmann’s home service solutions.
Valuable Franklin Heating Solutions

Winters in Franklin are no match for our advanced heating services. Whether you need a new installation or expert maintenance, we have you covered with a wide range of reliable options:
- Heat Pumps: Embrace year-round comfort with versatile heat pump systems that provide both heating and cooling. These systems are an excellent choice for Franklin homeowners looking to reduce energy costs while maintaining a consistent indoor climate. Whether you need a new installation or a repair, our team ensures optimal performance tailored to your home’s needs.
- Boiler Services: Boilers are a popular choice for homes in Franklin due to their durability and efficiency. We offer comprehensive boiler services, including installations, repairs, and maintenance, ensuring your system operates safely and effectively for years to come.
- Furnace Maintenance and Replacement: Regular furnace maintenance is key to preventing breakdowns and extending the life of your system. If it’s time for an upgrade, our high-efficiency furnaces deliver powerful heating while reducing energy costs.
- Emergency Heating Repairs: A sudden heating issue can disrupt your life, especially during a Wisconsin winter. Our team is available to provide fast, effective repairs, restoring warmth to your home without delay.
Plumbing Services for Every Need
A dependable plumbing system is essential for a smooth-running household. At Thielmann Heating, Cooling, and Plumbing, we offer a comprehensive range of plumbing services to keep everything flowing smoothly and efficiently:
- Tankless Water Heaters: Experience the luxury of endless hot water while saving energy with a tankless water heater. These compact and efficient systems are perfect for homes aiming to maximize utility and performance without taking up too much space.
- Water Line Services: Leaks or aging water lines can cause significant issues over time. Using advanced detection tools, we locate and address problems quickly, ensuring uninterrupted water flow and preventing costly damage.
- Modern Fixture Installations: Upgrade your bathroom or kitchen with state-of-the-art fixtures, including energy-efficient faucets, elegant sinks, and high-performance showerheads. Our installations are designed to enhance both style and functionality.
- Sump Pump Solutions: Safeguard your basement from potential flooding with reliable sump pump services. From installations to routine maintenance, we ensure your pump is prepared to handle heavy rains and protect your home.
Efficient Cooling Services in Franklin

As the temperatures rise, having a dependable cooling system gives you the peace of mind you deserve. At Thielmann, we offer a comprehensive range of cooling solutions in Franklin designed to keep your home cool, comfortable, and efficient:
- Central Air Conditioning: Upgrade to high-performance AC systems that deliver consistent cooling while lowering energy usage. Our technicians carefully assess your home’s size and layout to recommend the perfect system for your needs.
- Zoned Cooling Solutions: Customize the temperature in different areas of your home with zoned cooling systems. These solutions improve comfort and energy efficiency by allowing you to cool specific rooms rather than the entire house.
- Seasonal Maintenance: Regular maintenance is crucial for keeping your AC system running smoothly. Our tune-ups include inspections, cleaning, and adjustments to identify and address potential issues before they escalate.
- Smart Thermostat Installation: Gain better control over your cooling system with smart thermostats. These devices allow you to adjust temperatures remotely, create schedules, and monitor energy usage, ensuring optimal comfort and efficiency.
Franklin Air Quality Specialists
Breathe easier with Thielmann’s advanced indoor air quality solutions. We provide tailored services to ensure the air inside your home is clean, refreshing, and safe for your family:
- Air Filtration Systems: Remove allergens, dust, and airborne pollutants with high-performance air filters. These systems are particularly beneficial for households with pets or allergy sufferers.
- Dehumidifiers and Humidifiers: Achieve the perfect balance of humidity in your home. Our dehumidifiers prevent mold and mildew during humid months, while our humidifiers combat dry air in winter, improving comfort and health.
- Ventilation Upgrades: Proper ventilation is key to maintaining fresh air circulation throughout your home. We provide advanced solutions that reduce indoor pollutants and enhance overall air quality.
- UV Light Purification: Eliminate harmful bacteria and viruses with UV purification systems. These devices work seamlessly with your HVAC system to create a safer living environment for your family.
Schedule Your Service in Franklin Today
Looking to improve your home’s comfort, energy efficiency, and safety? Contact Thielmann Heating, Cooling, and Plumbing today by calling (262) 299-6197 to arrange a service or consultation. Our experienced team is honored to provide Franklin homeowners with personalized solutions that exceed expectations.
Recent Jobs and Reviews in Franklin, WI
Job Locations and Reviews
Performed scheduled maintenance on customer's HVAC system. Opened access panel to inspect internal components, checked all electrical connections and control mechanisms. System appears to be in normal operating condition with no signs of damage, leaks, or unusual wear.
Performed scheduled maintenance visit on residential HVAC system. Inspected Honeywell digital thermostat and control wiring connections, verified proper operation of circuit board components, and ensured all wire connections were secure and properly terminated.
Successfully completed installation of a new furnace system, including proper connection of refrigerant lines and verification of condensate drainage. Installed copper linesets according to manufacturer specifications and ensured proper drainage to the floor drain for efficient system operation.
Performed annual tune-up on HVAC system. Conducted comprehensive electrical testing using Fieldpiece SC680 multimeter, measuring microamp readings at 3.4 μA DC and voltage readings at 59.76V. All electrical parameters were verified to be within manufacturer specifications, ensuring safe and efficient system operation.
Conducted comprehensive evaluation of aging HVAC system in basement mechanical room, including assessment of furnace unit with visible control panels and wiring, along with adjacent water heater installation with associated copper and PVC piping. Documentation completed with detailed photographs of current equipment to support replacement recommendation, noting configuration of existing ductwork, ventilation systems, and utility connections necessary for proper system upgrade planning.
Performed annual preventive maintenance on a residential Carrier furnace unit located in the basement mechanical room. Conducted full electrical diagnostic testing with SC680 multimeter, checking amperage readings (3.0 mA) to verify proper component operation. Visual inspection revealed system to be in normal operating condition with no visible damage or anomalies to the furnace or connected ventilation components.
Conducted thorough inspection of basement HVAC and ductwork system. Identified aging galvanized metal ducts with potential airflow restrictions and recommended replacement. Evaluated existing mechanical equipment mounted against concrete block wall for compatibility with new ductwork configuration.
Performed diagnostic gas analysis on heating system using Sauermann analyzer, which detected elevated carbon monoxide (CO) levels between 927-1139 ppm, indicating combustion issues. Oxygen levels measured at 3.23-3.61% with CO₂ readings around 9.7-9.9%, suggesting improper air-fuel mixture requiring adjustment or possible heat exchanger inspection.
Performed routine commercial tune-up on HVAC system. Noted significant mineral buildup and corrosion around valve connections on heat exchanger pipes. Cleaned accessible components and inspected electrical connections, observing proper wire terminations at motor assembly. System operational but recommend follow-up service to address progressive corrosion issues on heat exchange components.
Performed comprehensive HVAC tune-up service, including inspection of internal components, circuit board examination, and verification of all electrical connections. System wiring was assessed for proper termination and safety, with particular attention to the motor assembly and control board connections. All components were confirmed to be secure and operating within manufacturer specifications.
Performed comprehensive tune-up on Carrier Infinity HVAC system including inspection of ductwork integrity. Used diagnostic equipment (ST43) to verify system performance and functionality. Interior duct inspection revealed normal condition with no significant debris or damage observed.
Successfully installed new high-efficiency furnace with digital thermostat display showing proper operation at 26 degrees. Mounted Aprilaire whole-home humidifier on the system, connecting all necessary tubing and ensuring proper integration with the HVAC system. Applied service identification sticker with 24-hour service contact information for future reference.
Performed comprehensive HVAC tune-up service including inspection of furnace interior components, blower assembly, and electrical connections. Verified proper operation of motor and examined all wiring connections (red, yellow, green, white, and blue) for secure attachment and signs of wear. Inspected PVC condensate drain and exhaust connections, confirming proper sealing at rubber coupling points and checking for any blockages or leaks.
Diagnosed cooling system failure in a residential HVAC unit less than 10 years old. Inspection revealed control board malfunction in the air handler, identified by examining component specification labels and internal wiring connections. Replaced defective control board, reconnected all electrical terminals properly, and verified proper operation of cooling system before completing service.
Completed inspection of bathroom shower ceiling unit. Observed fully functioning showerhead and arm mount fixture with proper water flow. Noted presence of moisture on ceiling surface suggesting proper seal integrity, with no visible leaks or damage to the fiberglass/acrylic enclosure.
Performed diagnostic assessment of boiler control board system. Inspected circuit board displaying "On" status with multiple connection points and wiring harness intact. Visual inspection revealed no apparent electrical component damage or loose connections.
Performed annual maintenance tune-up on the residential gas furnace system located in the basement utility room. Inspected internal components after removing access panel, checked all electrical connections and wiring for proper operation. Examined the PVC ventilation system for proper installation and signs of leakage; all connections appear secure with no visible issues detected.
Performed routine tune-up service on HVAC system in basement utility room. Inspected ceiling-mounted ductwork and accessible components. Observed PVC Coreline pipe installation running between joists, which appears to be properly secured and in good condition. No immediate concerns identified with visible system components.
Performed routine maintenance on Carrier furnace system located in basement utility area. Inspected PVC intake/exhaust venting pipes and confirmed proper installation. Checked condensate drain lines and noted minor moisture staining around unit base which was addressed during service.
Performed indoor air quality service including inspection and replacement of AprilAire filter. Removed existing filter which showed visible contamination (green spot on metallic surface), indicating proper filtration was occurring but replacement was necessary. Installed new filter to maintain optimal IAQ and system efficiency.