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) 299-6197 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) 299-6197 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) 299-6197.
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 June 2026 and September 2026.
The most recent job was on September 16, 2026.
Job Locations and Reviews
Responded to service call for leaking water heater in basement utility area. Upon inspection, observed gray cylindrical residential water heater with copper supply lines and pressure relief valve piping, unit positioned on concrete floor with drain pan beneath. Assessed condition of tank, connections, and surrounding plumbing infrastructure to determine source of leak and provided estimate for water heater replacement options.
Performed on-site assessment for washing machine water supply valve replacement. Inspected existing hot and cold water supply lines with flex hoses and shut-off valve connections in utility closet, noting current configuration and accessibility for valve replacement work. Provided estimate for replacing both hot and cold water shut-off valves to ensure proper water flow control and prevent potential leaks.
Completed on-site estimate for Magic Pak HVAC system replacement. Assessed existing unit installation in basement/crawl space area, documenting current ductwork configuration with visible condensation issues on metal duct surfaces and aging infrastructure including deteriorated wall surfaces and exposed copper piping. Evaluated structural support system, insulation conditions, and accessibility for replacement equipment installation.
Completed routine cooling system maintenance visit as part of membership agreement. Performed comprehensive diagnostic testing of outdoor condensing unit, including voltage measurements reading 495.1V and refrigerant pressure analysis using manifold gauges. Inspected electrical components including capacitor, contactor, and associated wiring connections to ensure proper operation and safety compliance.
Installed 40-gallon residential water heater in basement utility area per approved estimate. Unit was properly positioned, connected to existing plumbing supply and discharge lines, and integrated with pressure tank system using appropriate brass fittings and copper piping. All connections were tested and verified operational with no leaks detected.
Completed electrical estimate for standby generator installation at residential property. Assessed basement area for transfer switch placement, identifying suitable location near existing electrical panel with adequate clearance from furnace and HVAC systems. Evaluated exterior mounting location adjacent to existing natural gas meter for generator pad installation, confirming gas line accessibility and proper clearances from building structure. Documented existing electrical infrastructure, utility connections, and site conditions to develop comprehensive material and labor requirements for automatic transfer switch installation and generator hookup.
Installed a 50-gallon power vent water heater with copper supply lines, brass shutoff valves, and expansion tank in residential utility space. Completed all plumbing connections and verified proper system operation upon installation.
Completed preventative maintenance cooling tune-up on Carrier HVAC system as part of recurring membership agreement. Performed comprehensive system inspection including refrigerant pressure and temperature diagnostics, verified proper system operation with readings of 858 PSIG high-side and 207.5 PSIG low-side pressures, confirmed electrical amperage at 24 amps, and documented equipment condition with superheat and subcooling measurements showing system operating within manufacturer specifications.
Completed preventative maintenance tune-up on Carrier Infinity furnace system. Performed comprehensive system diagnostics including electrical testing with digital multimeter, verifying capacitor readings and voltage levels to ensure proper operation. Inspected all system components, PVC venting, and air filtration unit, confirming equipment is functioning within manufacturer specifications with no issues identified.
Responded to warranty service call for tankless water heater with no heat output. Upon arrival, inspected unit and associated plumbing connections including hot and cold water PEX lines with isolation valves, electrical supply connections, and venting system. Diagnosed issue, performed necessary repairs to restore proper operation, and verified unit was heating water correctly before completing service.
Responded to service call for poor indoor air quality and haze throughout home. Upon arrival, found HVAC system had been shut down by homeowner as a precaution. Performed comprehensive system diagnostics and air quality assessment. Determined primary cooling system was functioning properly with no mechanical issues or refrigerant concerns. Verified air handler operation, inspected ductwork for obstructions, and confirmed proper airflow throughout system. Recommended deployment of portable air purification units to address immediate air quality concerns while system operates normally. Customer educated on proper system operation and air quality monitoring procedures.
Completed preventative maintenance tune-up on York furnace and outdoor condensing unit. Performed system inspection, verified proper operation of all components, and documented equipment condition with photographs for service records.
Conducted on-site assessment for complete HVAC system replacement in basement mechanical room. Evaluated existing aging furnace and air conditioning system, documenting current equipment configuration including gas line routing, venting arrangement, and drainage conditions. Photographed mechanical space layout, existing ductwork connections, PVC vent piping, copper refrigerant lines, and floor drain with visible water staining indicating potential condensate management concerns. Provided comprehensive replacement estimate for new high-efficiency heating and cooling equipment suitable for basement installation.
Responded to service call for AC unit producing loud buzzing noise and causing lights to dim upon startup, indicating potential electrical issues. Upon inspection, found outdoor condensing unit showing signs of weathering and dirt accumulation on exterior panels. Performed diagnostic assessment of electrical components and compressor operation to identify source of abnormal noise and voltage draw. Unit is covered under active parts and labor warranty installed earlier this year.
Completed routine cooling season maintenance visit per membership agreement. Performed comprehensive system inspection of outdoor condensing unit, verified electrical measurements using clamp meter showing nominal capacitor readings, and checked refrigerant pressures with manifold gauges to confirm proper system charge and operation. All components found operating within manufacturer specifications with no repairs needed at this time.
Completed scheduled cooling system tune-up and preventive maintenance inspection as part of recurring membership agreement. Performed comprehensive evaluation of air conditioning unit exterior components, verified proper ventilation airflow through louver panels and filter media, and confirmed electrical connections and conduit installations were secure and functioning correctly.
Completed HVAC equipment assessment for furnace replacement estimate in basement mechanical room. Evaluated existing dark-paneled furnace unit with blower access, associated white PVC venting system extending to ceiling joists, and existing electrical panel with dual columns of circuit breakers to determine compatibility requirements for new equipment installation. Documented current system configuration including humidifier/air treatment device mounted on ductwork, concrete floor conditions, and access parameters for replacement work.
Installed a 50-gallon natural vent Bradford White water heater in basement utility area. Connected copper supply lines, installed thermal expansion tank with brass fittings, and completed all necessary plumbing connections including pressure relief valve. Verified proper venting configuration and tested unit for safe operation.
Completed routine cooling season maintenance visit under membership agreement. Performed comprehensive A/C tune-up including system inspection of evaporator coil, heat exchanger fins, and electrical components. Replaced air filter with Honeywell 16x25x4 media filter. Inspected condenser unit control board, capacitor, and all electrical connections for proper operation. Verified all wiring terminations secure and system operating within manufacturer specifications. Documented equipment condition with photos showing clean coil surfaces and properly functioning control components.
Completed residential water heater installation in basement utility area. Retrieved new unit from Ferguson supply house and coordinated arrival with customer onsite. Installed tall cylindrical water heater with proper connections to existing plumbing system, including copper supply lines and flexible connectors. Mounted blue expansion tank horizontally above unit and connected to water system. Installed metallic flue piping for proper venting. Verified all connections to electrical panel and ensured proper grounding and circuit protection. Tested system operation and confirmed no leaks at all connection points.
