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 in September 2026.
The most recent job was on September 29, 2026.
Job Locations and Reviews
Completed comprehensive tune-up on residential HVAC system, including inspection of gas valve assembly, electrical connections, and verification of proper operation. Supply air temperature measured at 108.5°F at register, confirming adequate heating performance and system functionality within normal operating parameters.
Performed comprehensive tune-up on high-efficiency boiler system, inspecting circulation pump, electrical connections, and associated copper piping for proper operation. Verified all components including expansion tank, pump wiring harnesses, and compression fittings were secure and functioning within manufacturer specifications. System tested and confirmed operating efficiently with no issues detected.
Responded to water leak in kitchen ceiling originating from upstairs bathroom. Inspected bathtub installation and drain assembly to identify source of leak occurring during bath time use. Determined leak was caused by compromised tub drain seal allowing water to penetrate through floor assembly into ceiling below. Repaired drain connection, resealed drain assembly with plumber's putty, and tested system to ensure watertight operation.
Completed comprehensive tune-up service on Carrier furnace and air conditioning system. Performed full system inspection, cleaning, and testing of both heating and cooling units. Verified proper operation with temperature readings at supply registers showing 584°F at heating outlet, confirming adequate heat output and system functionality.
Performed scheduled tune-up maintenance on air conditioning system and furnace unit. Conducted electrical diagnostics using multimeter to verify proper voltage and amperage readings at control panel, confirming all electrical connections were secure and within manufacturer specifications. Measured supply air temperature at 104.7°F to verify system heating capabilities and proper operation of heat exchanger components.
Completed comprehensive preventative maintenance service on residential forced-air heating and cooling system as part of annual membership agreement. Performed full furnace tune-up including inspection of heat exchanger, burner assembly, ignition system, and gas connections. Cleaned and examined blower wheel assembly, confirming proper operation and airflow. Inspected all ductwork connections, PVC condensate and venting systems, and verified proper clearances. Conducted air conditioning system evaluation including refrigerant levels, electrical connections, and condenser operation. All components found operating within manufacturer specifications with no immediate repairs required. System returned to normal operation.
Completed annual cooling tune-up maintenance visit on Carrier air conditioning system as part of recurring family membership service. Performed comprehensive system inspection, verified condenser unit operation, checked refrigerant levels, cleaned condenser coils, tested electrical connections at disconnect box, and confirmed proper airflow through all components. Unit found in good operating condition with no repairs needed at this time.
Completed comprehensive tune-up maintenance on HVAC system greater than 10 tons. Performed internal ductwork inspection using borescope camera to assess interior condition of metallic duct surfaces and verified proper airflow pathways. Inspected condensate drain system including PVC piping and elbow connections in mechanical room, confirmed proper drainage operation and cleared any potential blockages.
Completed comprehensive furnace tune-up on Lennox system with smart thermostat control. Performed standard maintenance including blower wheel inspection and cleaning, which showed normal operation with no debris accumulation. Customer reported uneven heating and cooling distribution throughout the home; inspected airflow and verified thermostat programming, recommended professional duct cleaning and possible ductwork assessment to address comfort issues in underserved rooms.
Completed furnace tune-up and performed maintenance on Aprilaire humidifier system, including inspection of water panel filter which showed signs of mineral buildup and reduced efficiency. Discussed humidifier operation and benefits with homeowner, who expressed interest in replacement unit; provided quote for new humidifier installation. Also performed routine maintenance on Goodman outdoor condensing unit, checking refrigerant pressures with manifold gauges and verifying proper system operation.
Completed mini split installation in unfinished garage space with electrical whip and disconnect previously installed by licensed electrician. Mounted indoor air handler unit on OSB-backed wall between exposed studs, connected refrigerant lines and condensate drain, and performed system startup and testing to verify proper operation of heating and cooling functions.
Completed annual tune-up and maintenance on residential air conditioning condenser unit. Inspected outdoor unit with protective cage guard, verified fins are clean and undamaged, and confirmed system is in good operational condition.
Completed comprehensive heating maintenance tune-up on 9-year-old Bryant furnace system. Performed full safety inspection including leak detection on gas connections, exhaust venting, and PVC intake/exhaust piping. Verified proper operation of all system components, measured supply air temperature at 102.7°F confirming adequate heat exchanger performance, and inspected electrical connections, humidifier integration, and ductwork connections. All safety checks passed with no leaks or concerns identified; system operating within manufacturer specifications.
Installed new gas line routing through floor joists and crawl space area per approved estimate. Gas line was properly secured to structural framing with appropriate mounting brackets and run horizontally through existing utility space alongside other building infrastructure. Installation included brass shut-off valve with red handle for system isolation and safety control. All piping was installed in compliance with gas code requirements, properly supported at required intervals, and positioned to avoid interference with existing plumbing, electrical conduit, and HVAC systems in the area. Gas line terminates at wall penetration with secure mounting and appropriate insulation protection where needed.
Completed scheduled tune-up maintenance on air conditioning system and fan terminal unit. Performed temperature differential measurements using calibrated digital thermometer, recording 22.8-degree reading to verify proper system operation. Inspected internal components including refrigerant lines, copper tubing, electrical connections, and mounting brackets to ensure all elements were secure and functioning within manufacturer specifications.
Conducted on-site assessment for toilet replacement project involving three existing fixtures. Evaluated current installations in residential bathrooms, noting standard two-piece toilets requiring removal and replacement with customer-supplied units, and provided detailed estimate for professional installation services.
Completed estimate for new gas line installation to serve kitchen stove in basement utility area. Assessed existing gas piping configuration and determined routing requirements for rerouting current line and installing new dedicated gas supply line for stove connection. Documented existing conditions including exposed ceiling joists, HVAC ductwork, and current utility piping layout to plan optimal path for new black iron gas pipe installation that will meet code requirements and provide proper gas supply to appliance location.
Completed preventative maintenance inspection on Carrier HVAC system including air conditioning unit and furnace as part of recurring membership service. Inspected condensate drain assembly, PVC drain lines, ductwork connections, and all major system components. Verified proper operation of heating and cooling equipment, checked all electrical connections and refrigerant lines, and confirmed system is functioning within manufacturer specifications.
Returned to address inspector's corrections on HVAC installation. Properly secured and supported refrigerant line set in basement ceiling area per code requirements, and reinstalled sill insulation in box sill where line set penetrates. Documentation photos were captured showing compliant line set support installation.
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.