Looking for comprehensive property system services for your home or business in New Berlin, Wisconsin? Thielmann Heating, Cooling, & Plumbing specializes in diverse plumbing, heating and cooling system solutions. We’re a full-service company offering repairs, maintenance, installations and replacements. Plus, we have 24-hour emergency HVAC services for your urgent needs!
Reliable HVAC System Repair, Replacement, & Maintenance Services
New Berlin’s weather can make it challenging to keep your home comfortable. When the temperatures skyrocket or plunge, ensure your HVAC system can handle it.
We are your go-to team for professional air conditioning, furnace, heat pump, and other HVAC services in the local New Berlin, WI area. We have the tools and expertise to get your systems working right so you can enjoy comfortable temperatures throughout your home or business.
Keeping cool in the summer requires a good air conditioner. Whether you need AC repair, replacement, maintenance, or installation services, count on our team to get the job done right.
We work on all types of cooling systems, including:
- Air conditioners: We can work on all models of air conditioning systems for residential and commercial properties.
- Heat pumps: We can repair, replace, or maintain energy-efficient heat pumps that deliver warm air inside and outside the home.
- Ductless mini-splits: We can service ductless HVAC units that provide total climate control for single rooms.
Contact our team at (262) 315-3067 to schedule AC services in New Berlin.
Additional Heating and Cooling Support We Offer
In addition to our HVAC system specialties, we can assist you with various heating solutions and components, including:
Top-Rated Heating System Services
Staying warm during the Wisconsin winter can be a struggle if your furnace, heat pump, or boiler isn’t working perfectly. No matter what is wrong with your HVAC system, we can fix it. Our team offers heating repair, replacement and maintenance services for heating systems like furnaces, boilers and heat pumps. Our professionals will help keep your New Berlin home warm throughout winter.
HVAC Ductwork Services in New Berlin
The air ducts around your home or business are the only link between your HVAC system and your rooms. You’ll have serious system trouble if any ducts are cracked, broken, disconnected, or blocked.
Our company provides comprehensive ductwork services in New Berlin. We offer air duct installation, repair, maintenance and cleaning so you can get the most out of your HVAC system.
For all your ductwork needs, call (262) 315-3067 or contact us online to schedule services today.
Reliable Indoor Air Quality Services
The air in your home can be dirtier than you may think. Dust, debris, and other harmful contaminants could be in your air, leading to respiratory illnesses and HVAC damage. The team at The Thielmann Group offers indoor air quality services, including:
- Air purifiers
- Humidifiers
- Dehumidifiers
Enjoy clean, safe air throughout your home.Schedule indoor air quality services in New Berlin by contacting us online or calling (262) 315-3067.
Commercial and Professional HVAC Unit Services
Commercial properties need top-quality HVAC systems that are made to last. Whether you need service for your system or a new one installed, look to our team for packaged unit services. We work on all brands of commercial-grade packaged HVAC units. Our team also installs packaged units for residential properties, allowing homeowners to have heating and cooling from a single, robust system. These convenient, energy-efficient systems allow for quick heating and cooling.
Trusted Plumbing Solutions for New Berlin, WI Homes
Plumbing issues never come at a good time. Whether you’re dealing with a dripping faucet or a flooded basement, Thielmann Heating, Cooling, and Plumbing provides the professional service New Berlin homeowners rely on. Our licensed plumbers are trained to handle every type of repair, replacement, and installation with precision and care.
From minor leaks to full system upgrades, we handle it all. Our technicians repair broken pipes, unclog drains, and replace worn fixtures that waste water and raise utility bills. If your water heater is struggling, we can repair it or install an energy-efficient model suited to your household. We also offer sump pump maintenance and water filtration systems that protect your home’s foundation and improve water quality.
Why homeowners in New Berlin choose Thielmann:
- Fast response times for urgent repairs
- Clear communication and upfront pricing
- Work completed to meet all local plumbing codes
- Licensed, insured professionals with years of experience
Our full range of plumbing services includes:
- Water heater repair and installation (tank and tankless)
- Drain cleaning and obstruction removal
- Leak detection and pipe replacement
- Sump pump service and installation
- Fixture, toilet, and faucet upgrades
- Garbage disposal repair and replacement
- Water treatment and filtration systems
Your plumbing system should work without worry. Thielmann Heating, Cooling, and Plumbing keeps your New Berlin home safe, efficient, and comfortable. Call today for prompt service or 24/7 emergency support when you need it most.
We Also Offer Water Conditioning Services for Clean, Safe Water
Water conditioning can clean your water, providing health benefits for you, your family or your patrons. We provide the following commercial and residential water conditioning services:
- Water filtration, including specialized carbon, reverse osmosis and sediment filters
- Whole-house filters for clean water flow through all your fixtures
- Iron curtains that eliminate sulfur, iron and manganese from water
- Water softening solutions to decrease unwanted mineral contents of hard water like calcium and magnesium
Introducing one or more of these solutions can improve the longevity of your appliances and clothing, promote better cleaning, decrease rust stains and enhance overall water quality for drinking.
Choose Thielmann Heating, Cooling, & Plumbing in New Berlin for Expert Service
Since 1929, our team has been a go-to choice for top-quality residential and commercial services in New Berlin and beyond. Our NATE-certified technicians can service all HVAC brands, install Lennox-brand units, offer 24-hour emergency care and more. You can also trust our team for extensive plumbing maintenance, repairs and installations. Plus, we offer diverse financing options, upfront pricing, special deals and a job well done. Contact us online or call (262) 384-6407 to schedule your service appointment.
Read Reviews by Our Customers
Recent Jobs and Reviews in New Berlin, WI
New Berlin, WI at a glance
Thielmann Heating, Cooling & Plumbing has completed 20 jobs in New Berlin, WI between September 2026 and October 2026.
The most recent job was on October 2, 2026.
Thielmann Heating, Cooling & Plumbing has completed 344 jobs in New Berlin, WI in the last 12 months.
Job Locations and Reviews
Completed scheduled heating maintenance visit on residential gas furnace system. Performed comprehensive inspection of heat exchanger, burner assembly, and gas valve operation. Verified proper function of blower motor, tested all electrical connections and control board operation, and confirmed safety systems were operating within manufacturer specifications. All components found to be in good working order with no immediate service needs identified.
Performed comprehensive furnace tune-up and inspection using borescope camera to examine internal components and heat exchanger for cracks or deterioration. Accessed unit through attic space, verified all electrical connections, tested safety controls, and confirmed proper system operation with all components functioning within manufacturer specifications.
Completed comprehensive tune-up and safety inspection on gas furnace system. Verified proper operation of burner assembly, heat exchanger, draft inducer motor, pressure switches, gas valve, flame sensor, and all electrical connections; system operating within manufacturer specifications with no issues found.
Responded to emergency service call for non-operational sump pump system with failed battery backup in crawl space. Upon arrival, found water had overflowed approximately 2 inches above crock level. Drained accumulated water from sump crock and assessed the Sumptek Alpha pump control system. Evaluated primary pump failure and battery backup malfunction that prevented automatic activation during power loss or primary pump failure. Inspected discharge piping, electrical connections, and float switch operation. Documented equipment condition and system configuration for repair recommendations.
Conducted comprehensive plumbing inspection of kitchen sink drainage system, including garbage disposal unit, PVC drain lines, and associated connections. All components were examined for proper operation, secure fittings, and potential leaks, with photographic documentation completed for service records.
Completed full HVAC system installation in basement mechanical room, including new air conditioning unit, evaporator coil, and 43-foot refrigerant line set. Installed new Carrier-branded air handler unit mounted vertically above existing furnace, with proper integration of ductwork including white rigid supply ducts and black flexible return connections. Ran white PVC condensate drainage and venting pipes from system with appropriate routing through ceiling joists. Installed copper refrigerant lines along wall studs with proper insulation and secured mounting. Connected all electrical components to existing panel with code-compliant wiring. Coordinated with licensed electrician for electrical hookup and obtained necessary permits prior to installation. Tested system operation, verified proper airflow through metallic ductwork and galvanized plenum, confirmed refrigerant charge levels, and ensured all connections were secure and leak-free. System fully operational and ready for service.
Completed comprehensive heating and cooling tune-up on MAGICPAK unit. Performed standard maintenance procedures including inspection of serpentine copper heat exchanger, which showed normal operational wear patterns and thermal discoloration consistent with regular use. All system components were evaluated and unit was returned to proper operating condition.
Completed plumbing inspection of exposed basement ceiling infrastructure per customer concern regarding needle valve and clamp installation. Examined copper supply lines, PVC drainage system, and associated mechanical fittings throughout unfinished utility space. Documented existing plumbing configuration including copper piping connections to PVC components via metal fittings, verified proper support and securing methods for all visible lines. Assessed needle valve and clamp assembly for structural integrity and code compliance, confirmed adequate clearance from ceiling joists and electrical conduit. Provided photographic documentation of current installation and recommended next steps for addressing customer concerns about blocking and ceiling finishing work.
Conducted on-site assessment for boiler replacement in residential basement mechanical room. Evaluated existing heating system including current boiler unit, chimney flue configuration, electrical panel capacity, and distribution infrastructure. Documented equipment layout showing brick chimney stack, existing white boiler unit on concrete base, associated ductwork, copper piping connections, and electrical service panels. Assessed feasibility of adding zone control system for upper floor heating distribution. Photographed mechanical room conditions including electrical panels, HVAC components, and existing piping configurations to develop comprehensive replacement estimate and zoning upgrade options.
Completed plumbing estimate for bathroom remodel involving installation of dual water supply lines for toilet and bidet fixtures. Assessed existing subfloor conditions and plumbing infrastructure in crawl space area, evaluated wall cavity access for rough-in work, and documented required PVC supply line routing through wooden framing to accommodate new fixture installations.
Diagnosed kitchen sink faucet with leak and low hot water pressure. Replaced Delta internal components using genuine Delta parts (RP4993G) to restore proper function and eliminate leak.
Completed high-efficiency boiler tune-up and inspection on residential heating system. Performed comprehensive maintenance including cleaning heat exchanger, inspecting burner assembly, testing all safety controls, and verifying proper combustion levels. Checked expansion tank pressure, examined piping connections for leaks, and confirmed all valves and fittings were operating correctly. System restored to optimal performance with no heat issues identified.
Completed annual tune-up and maintenance on Amana furnace model DM96VC0803BNAA, 80,000 BTU/HR unit. Inspected condensate drain system, verified proper operation of all components, and confirmed equipment is functioning within manufacturer specifications.
Completed full installation of new air conditioning system and evaporator coil with 24-foot refrigerant line set connecting outdoor condensing unit to indoor air handler. Modified and raised existing ductwork in basement mechanical room to accommodate new equipment configuration. Coordinated with licensed electrician for proper electrical connections and obtained necessary permits for installation compliance. Installed Carrier-branded indoor unit in basement alongside existing water heater, ensuring proper clearances and accessibility for future maintenance. Positioned outdoor condensing unit on exterior pad adjacent to house foundation with appropriate clearance from structure and landscaping. Verified all refrigerant connections, tested system operation, and confirmed proper airflow through modified duct system. System commissioned and operating to manufacturer specifications.
Completed rough-in plumbing installation for new full bathroom addition in unfinished basement. Installed complete drainage system including PVC waste lines routed through ceiling joists and vertical drain stacks mounted to concrete block walls. Ran water supply lines utilizing both PVC and copper piping to accommodate future fixture locations. Poured and leveled concrete floor sections in cross-pattern configuration to establish proper drainage slopes and prepare substrate for fixture installation. Coordinated plumbing rough-in with existing HVAC ductwork and electrical systems in ceiling space to ensure proper clearances and code compliance.
Responded to service call and successfully completed repair by replacing defective control board. Removed failed circuit board assembly and installed new replacement unit, restoring system to proper operation.
Completed air conditioning tune-up and system evaluation on outdoor condensing unit. Performed electrical diagnostics using digital multimeter to verify proper voltage and amperage readings. Cleared excessive vegetation growth that had accumulated around and through the unit's fan grille and louvered panels, which was restricting airflow and potentially impacting system efficiency. Discussed duct cleaning services with customer as requested.
Completed comprehensive furnace tune-up including full system inspection, filter check, and temperature verification. Supply air temperature measured at 123.6°F, indicating proper heat exchanger operation and burner performance. All ductwork and components inspected and found to be functioning within normal parameters.
Completed comprehensive preventive maintenance visit for both heating and cooling systems under annual membership agreement. Performed full tune-up inspection on Lennox furnace model EL296UH090XE48C-01, including verification of manufacturer specifications, voltage readings at 120V, and proper equipment labeling. Inspected and serviced air conditioning unit as part of scheduled seasonal maintenance protocol. Verified foam insulation gasket material at furnace base for proper sealing and energy efficiency. Documented equipment condition through photography for service records. All systems operating within normal parameters upon completion of maintenance procedures.
Completed estimate for gas piping installation to service a portable generator. Assessed existing mechanical room infrastructure including copper supply lines, galvanized ductwork, and wall-mounted utility connections. Evaluated generator specifications requiring 1/2" to 3/4" gas line connection with 3/4" quick-connect fitting for safe and compliant natural gas supply to portable unit.
