Your HVAC system helps keep your home comfortable regardless of the weather outside. From snowy winters to blazing summers, your heating and air conditioning help keep your family comfortable and safe from the elements.
Our team of HVAC professionals at The Thielmann Group Heating and Cooling understands this and is dedicated to providing outstanding customer service and HVAC service in Brookfield that will keep your system running smoothly for a long time. We offer heating and air conditioning services for every style of HVAC system, and we are ready to serve our local community in the Brookfield, Wisconsin area!
Air Conditioning Repair and Tune-Up Services
As temperatures rise over the summer, your air conditioning keeps you and your family cool and comfortable. Our team of HVAC professionals at The Thielmann Group offers air conditioning service in Brookfield, WI, to keep your system in peak condition and save you money on more expensive repairs later down the road. We tailor our services to meet your home’s needs while staying within budget.
AC Replacement and Installation Services
Maintaining a comfortable temperature in your home during the blazing Brookfield summers is important in keeping your family safe and comfortable. As Brookfield’s trusted HVAC experts, we handle every aspect of your AC replacement project and understand the importance of a well-functioning air conditioner, which is why we offer specialized air conditioner replacement and installation services to keep your HVAC system running at its highest potential throughout the summer.
Ductless Mini-Split Installation and Repair Services
While the traditional HVAC setup requires a separate air conditioning unit and furnace to provide heat and cool air, a ductless mini-split HVAC system provides heating and cooling solutions with only one system. It can be a versatile heating and cooling option for both the summer and winter. The Thielmann Group offers installation and repair services for ductless mini-split HVAC systems to keep your home cool and comfortable.
Furnace Repair and Cleaning Services
Your furnace keeps your home nice and toasty even when there is snow outside your window. Our team at The Thielmann Group offers furnace repair in Brookfield, WI, including repairs and cleanings to keep your furnace running smoothly. Yearly furnace cleanings can help prolong the lifespan of your furnace and prevent more costly repairs later down the road.
Furnace Installation and Replacement Services
A reliable furnace can help keep your family warm even during the snowy winter months. Our team of professional furnace technicians offers an expert and thorough furnace service in Brookfield, WI that includes same-day services and customer-focused solutions that will last a lifetime. Whether replacing your outdated furnace or installing a brand new furnace, our team at The Thielmann Group is ready to help every step of the way.
Heat Pump System Installation Services
Heat pumps offer an alternative to the traditional furnace method of heating your home. Our team of professionals at The Thielmann Group offers upfront pricing, free estimates, and a customized installation plan to keep the process as smooth as possible and provide results that will last a lifetime. We offer heat pump installation services to keep your home heated—even if snow is on the ground outside.
Boiler Installation and Repair Services
Boilers don’t just provide your home with warm water during the winter months, but they can also heat your home as part of your HVAC system. We offer boiler installation and repair services to ensure your home remains heated and comfortable.
Thermostat Installation and Repair Services
The thermostat in your home is like the brain of your HVAC system, controlling whether the heating or cooling system is running and the temperature your home needs to maintain. A good-quality thermostat gives you extensive control over the temperature of your home and endless customization options. The Thielmann Group offers thermostat installation and repair services for both smart thermostats and traditional thermostat systems.
Commercial Heating Maintenance and Installation Services
Your business or other commercial building requires reliable heating and cooling to keep work running smoothly and employees comfortable every season. Our HVAC technicians at The Thielmann Group are trained and certified to provide top-notch heating and cooling services for commercial buildings in the Brookfield area. We also offer air quality services including repairing faulty ductwork.
Have Fun this Weekend Instead of Worrying About HVAC Issues in Your Home
Leaving the dirty work to the professionals at The Thielmann Group ensures that your HVAC system is in good hands, but also gives you the freedom to enjoy your weekend with your family and friends instead of worrying about HVAC issues in your home. If you want to explore family entertainment, swing by the Silverspot Theater in downtown Brookfield. While we work on your home, take a break and enjoy some delicious tacos at the Belair Cantina. Enjoy your time off, and leave the heating and cooling services for your Brookfield home to us!
Our Professionals Will Keep Your Home Comfortable During the Autumn, Winter, Spring, and Summer Seasons
As the seasons change, so do your HVAC needs. Summers in Brookfield can get as cold as 10 degrees Fahrenheit, and your heating needs to maintain a comfortable temperature in your home. Also, in the summer, your air conditioning keeps you comfortable and protected from the blazing temperatures of up to 90 degrees Fahrenheit Our team of experts at The Thielmann Group is ready to work with you on any repair or maintenance services to keep your HVAC system in peak condition to withstand the weather outside your door.
Book a Heating or Cooling Appointment With Our Team in Brookfield
Are you looking to schedule an appointment with one of our expert HVAC technicians? Contact The Thielmann Group Heating & Cooling online or over the phone at (626) 600-3896 for a free estimate or to schedule a visit. Our team is ready and available to answer any questions or concerns you may have. Whether it is your heating or air conditioning, our team is ready to get the job done.
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Recent Jobs and Reviews in Brookfield, WI
Brookfield, WI at a glance
Thielmann Heating, Cooling & Plumbing has completed 20 jobs in Brookfield, WI in September 2026.
The most recent job was on September 28, 2026.
Job Locations and Reviews
Replaced defective solenoid valve on humidifier system to restore proper operation and humidity control. New valve was installed from available stock, all electrical connections were properly terminated and secured, and system was tested to verify functionality.
Conducted on-site evaluation of existing sump pump system to provide estimate for backup pump installation. Assessed current setup consisting of primary sump pump with vertical PVC discharge piping secured to concrete block wall with metal clamps, discharging into circular sump pit with blue rim. Evaluated exterior drainage system including white PVC and black corrugated flexible piping extending from foundation to direct water away from structure. Discussed options for secondary backup system including battery-powered backup pump and water-powered backup pump alternatives to ensure continuous operation during power outages or primary pump failure. Documented existing conditions and drainage infrastructure for estimate preparation.
Conducted on-site assessment for gas furnace replacement. Evaluated existing HVAC system installation, documented current equipment configuration including furnace unit, PVC venting system, electrical connections, and control components. Photographed equipment specifications, mechanical room layout, and existing infrastructure to prepare comprehensive replacement estimate.
# HVAC Service Report Responded to service call for non-operational furnace. Upon inspection, discovered extensive rust and corrosion throughout the unit's internal components, including metal brackets, mounting hardware, and housing panels. The evaporator coil sections showed significant deterioration with accumulated debris between aluminum fins and visible compression damage. Metal surfaces exhibited severe oxidation from prolonged moisture exposure, with rust penetration affecting structural integrity of critical components. Documented equipment condition with photographic evidence showing advanced corrosion on mounting brackets, deteriorated painted surfaces, and compromised coil assemblies. Unit condition indicates extended exposure to humidity and moisture, resulting in widespread component degradation that has impacted system functionality.
Installed customer-supplied garbage disposal unit under kitchen sink. Completed all necessary plumbing connections, verified proper drainage function, and ensured secure mounting of the disposal unit to the sink assembly.
Completed furnace replacement in basement, removing 18-year-old natural gas unit and installing new system. Updated thermostat to Bryant Evolution Connex model with digital display and programming capabilities.
Conducted on-site assessment for water heater replacement, evaluating existing plumbing connections, copper supply lines, and filtration components mounted on concrete block wall. Documented current system configuration including aged copper piping, brass valve fittings, and cylindrical filter assembly to provide accurate installation estimate and identify any necessary modifications to existing infrastructure.
Completed comprehensive air conditioning tune-up including system diagnostics with digital multimeter to verify electrical performance and proper voltage readings. Inspected evaporator coil, refrigerant lines, and all mechanical components to ensure optimal system operation and efficiency for the cooling season.
Completed comprehensive tune-up service on Daikin furnace and air conditioning system. Performed full system inspection including gas valve assembly, ignition components, electrical connections, and control board. Replaced 16x25x4 air filter, verified proper operation of all mechanical and electrical components, inspected ductwork and PVC venting system, and confirmed system is operating within manufacturer specifications.
Performed comprehensive preventive maintenance on commercial HVAC system consisting of five rooftop units, two heat pump systems, and two interior air handling units. Completed full tune-up procedures on all equipment including filter inspection and replacement, electrical connection testing with multimeter, refrigerant line inspection, cleaning of condensate drains, and verification of proper airflow and system operation. All units tested and confirmed operational with no deficiencies noted.
Completed annual tune-up and maintenance on air conditioning system and natural gas furnace. Performed combustion analysis on heating unit with flue gas analyzer, confirming optimal efficiency at 94.0% with safe carbon monoxide levels of 7 ppm and proper oxygen content at 7.7%. Inspected condensate drain pan and PVC drain lines, verified proper installation and drainage flow, confirmed all components clean and functioning correctly.
Installed a new 40-gallon Bradford White residential water heater in utility room, connecting all copper supply lines, pressure relief valve, and associated plumbing components. Verified proper operation of expansion tank and ensured all connections met code requirements for safe and efficient hot water delivery.
Assessed water heater with severe leaking from bottom due to rust-through damage from prolonged contact with concrete floor. Provided estimate for complete water heater replacement including 40-gallon gas gravity unit, expansion tank with mounting arm, copper press fittings (couplings, male/female adapters, 90-degree elbows), 3/4-inch copper pipe, and ball valve for proper installation and code compliance.
Completed recurring membership cooling maintenance visit. Performed system diagnostics using digital multimeter to verify electrical parameters and measured supply air temperature at 72.7°F using calibrated digital thermometer. All readings within normal operating range for cooling system operation.
Responded to water main leak in basement utility area. Conducted thorough inspection of copper pipe assembly and brass valve system connected to water meter. Documented precise measurements of existing piping configuration to determine correct replacement parts needed. Assessed condition of corroded brass fittings and aging copper pipes showing significant patina and wear. Prepared specifications for parts ordering and developed comprehensive repair estimate for water main leak remediation.
Completed full tune-up maintenance on residential HVAC system for new customer. Performed comprehensive inspection of furnace components including pressure switches, blower assembly, electrical connections, and safety controls; verified all wiring connections secure and pressure switch operation within specifications. All components found operating properly with no issues identified during service visit.
Completed furnace and air conditioning tune-up on residential Lennox HVAC system. Performed comprehensive diagnostics using digital meter to verify system temperatures and operational parameters, inspected outdoor condenser unit positioned on exterior pad, and confirmed all components operating within manufacturer specifications. Customer requested afternoon appointment due to work schedule; prior contact was made before arrival as requested.
Conducted plumbing assessment for two active water leaks requiring immediate attention. Inspected hose bib shut off valve located inside cabinet area, which exhibited active leaking requiring valve replacement or repair. Evaluated AO Smith ProLine water heater in basement showing signs of water damage and active leakage at base, with visible water staining on concrete floor indicating ongoing issue requiring tank replacement or repair of failed components.
Conducted comprehensive plumbing estimate for three separate issues: sump pump evaluation in basement area with exposed joists and copper piping, replacement assessment for upstairs bathroom tub spout with chrome fixtures and diverter handle, and diagnosis of exterior hose bib leak. Documented existing conditions of all fixtures with photographic evidence for accurate material and labor quotation.
Conducted on-site assessment for replacement of two aging shutoff valves located on both sides of the water meter in basement. Inspection revealed existing valves showing signs of corrosion, oxidation, and weathering, with visible verdigris on copper components and deteriorated metal surfaces. Documented current plumbing configuration including vertical pipe assembly with compression fittings, valve bodies with blue handles, and associated copper tubing secured with mounting brackets. Noted water staining on adjacent wall surfaces indicating potential past leakage or moisture exposure. Photographed existing valve conditions, pipe connections, threaded fittings, and overall meter assembly to provide accurate estimate for valve replacement work. Observed water treatment system including softener unit with salt supply in immediate vicinity of work area. Provided detailed assessment of required materials and labor for complete shutoff valve replacement to ensure proper water meter isolatio
