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) 315-3067 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) 315-3067 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
Franklin, WI at a glance
Thielmann Heating, Cooling & Plumbing has completed 20 jobs in Franklin, WI between June 2026 and September 2026.
The most recent job was on September 15, 2026.
Job Locations and Reviews
Completed comprehensive tune-up service on residential boiler system and mini-split unit. Inspected hydronic heating distribution manifold with multi-zone brass ball valves, verified circulator pump operation (Taco 007 model), examined copper piping connections and flexible ductwork throughout mechanical room, and documented system configuration with all components functioning properly.
Completed installation of new high-efficiency furnace system with proper permitting and electrical work coordinated. Installed EL297UH090XV48CK-02 unit with exterior PVC venting and intake piping configured through foundation, ensuring proper condensate drainage and code-compliant termination. All components labeled and documented per manufacturer specifications.
Conducted site assessment for replacement of two commercial air conditioning units. Inspected existing HVAC infrastructure in mechanical room, documented current furnace unit F-1 and associated ductwork configuration. Evaluated equipment accessibility, ductwork connections, and spatial requirements for new AC unit installations. Photographed existing system components and mechanical room layout to prepare comprehensive replacement estimate.
Responded to no-cooling call where unit made a clunking noise and ceased operation. Upon arrival, performed diagnostic testing on Carrier outdoor condensing unit and identified failed component requiring replacement. Completed repairs, verified proper system operation, and restored cooling functionality.
Completed diagnostic evaluation and replacement of two interior shut-off valves serving exterior hose bibs. Accessed valves located in concealed space behind ceiling/wall area with exposed framing. Removed existing corroded shut-off valves showing significant oxidation and patina buildup on copper supply lines. Installed new shut-off valves with cross-handle mechanisms on copper piping connections to ensure proper water control to outdoor spigots. Verified proper operation of both new shut-off valves and confirmed no leaks at connection points.
Completed routine cooling system maintenance visit as part of membership agreement. Performed comprehensive A/C tune-up including inspection of outdoor condensing unit electrical components, capacitor, contactors, and wiring connections. Verified proper operation of indoor air handler and furnace system. All components found to be functioning within normal parameters and system operating efficiently.
Responded to callback regarding customer dissatisfaction with previously installed thermostat model. Removed existing unit and installed preferred Honeywell Home thermostat as discussed. Verified level installation and proper mounting to wall surface. System tested and operational upon departure.
Conducted comprehensive assessment of 41-year-old existing furnace and air conditioning system in residential basement for replacement estimate. Evaluated current HVAC equipment configuration, existing electrical service capacity at main panel, available clearances for new equipment installation, and utility connections including gas lines and condensate drainage. Documented existing system specifications, ductwork conditions, and spatial requirements to provide accurate equipment sizing and replacement recommendations for complete heating and cooling system upgrade.
Completed annual tune-up on residential air conditioning system. Performed comprehensive inspection of outdoor condenser unit, verified proper operation of all components, and ensured system is ready for cooling season. Customer requested 16x25x4 furnace filter for future replacement.
Completed preventive maintenance tune-up on residential air conditioning system at single-family home. Performed comprehensive inspection of outdoor condenser unit, verified electrical connections at disconnect box, checked refrigerant levels, cleaned condenser coils, and tested system operation to ensure optimal performance for the cooling season.
Performed comprehensive air conditioning tune-up and system diagnostics. Utilized digital multimeter and manifold gauge set to measure electrical parameters, refrigerant pressures, and system performance across condenser coils and associated components. All readings verified within manufacturer specifications, system operating efficiently with no deficiencies noted.
Performed site assessment of non-functional Carrier outdoor condensing unit (ACR22) and documented existing equipment condition with photographs. Evaluated installation location, electrical disconnect, and surrounding clearances to prepare comprehensive replacement estimate for failed air conditioning system.
Responded to service call for air conditioning unit experiencing surging issues as part of prepaid membership cooling maintenance visit. Upon inspection, accessed electrical compartment and examined all internal components including capacitor, contactor relay, and associated wiring connections. Verified proper electrical connections, checked capacitor condition and ratings, and inspected control circuits for any loose or damaged wires that could cause intermittent surging behavior.
Responded to no cooling call on 10-year-old Carrier HVAC system for new homeowners requesting warranty coverage verification. Upon arrival, performed system inspection and diagnostics on furnace/air handler unit installed in mechanical room. During examination, discovered compromised condensate drain system with corroded brass manifold assembly showing significant age-related deterioration, discoloration, and moisture accumulation on surrounding components. The drainage hardware exhibited brown staining and corrosion at connection points, indicating potential blockage or drainage failure contributing to system malfunction. Inspected PEX tubing connections and drain line routing from unit. Documented equipment condition and warranty-eligible components with photographic evidence for manufacturer claim submission. System requires condensate drain assembly replacement to restore proper operation and prevent future cooling interruptions.
Completed air conditioning tune-up service at residential property. Inspected outdoor condensing unit and found heavily soiled air filter with significant dust and debris accumulation restricting airflow. Removed and replaced dirty filter with new pleated HVAC filter to restore proper system ventilation and efficiency.
Performed comprehensive tune-up on MagicPak HVAC system, servicing both heating and cooling components. Conducted thorough inspection of cabinet-style unit, verified all manufacturer specifications and safety labels, checked refrigerant levels using manifold gauges, and inspected internal components including blower assembly and condensate management system. All systems tested and operating within normal parameters upon completion.
Responded to no cooling call on commercial AC unit. Upon inspection, found system running but not producing cool air. Diagnosed issue as failed compressor due to internal mechanical failure, evidenced by corroded and mineral-stained service port fittings. Thermostat showing permanent hold at 75°F with cooling mode active but unable to satisfy setpoint. Advised customer of compressor replacement requirement to restore cooling function.
Responded to callback for recently installed AC system not cooling properly. Upon inspection, discovered evaporator coil completely frozen over with extensive ice buildup throughout the unit. Found drain pan filled with debris and moisture, indicating airflow restriction. Identified inadequate airflow as root cause of freezing condition. Documented conditions with photos showing ice accumulation on coil and contaminated drain pan. System requires defrosting, airflow correction, and verification of proper refrigerant charge once ice melts.
Responded to service call for AC unit leaking issue. Upon arrival, performed system inspection and diagnostics on Carrier CNPVP3617ALA4AA unit containing R-410A refrigerant. Documented unit specifications and current condition with photos for service records.
Completed scheduled preventive maintenance cooling visit on Carrier condensing unit as part of prepaid membership agreement. Performed comprehensive system inspection including visual assessment of condenser coil fins, cabinet condition, and refrigerant line connections. Unit found in good operational condition with clean exterior housing, straight condenser fins, and no visible signs of damage, rust, or refrigerant leaks. Condenser coil showed minor debris accumulation between fins typical of normal operation. Equipment positioned properly on concrete pad with adequate clearance from structure and landscaping for proper airflow and serviceability.