AC, Heating and Plumbing Services in Wauwatosa

Thielmann - Wauwatosa - City Sign 2

Thielmann Heating, Cooling & Plumbing can assist you with all your heating, ventilation, and air conditioning (HVAC) repair issues in Wauwatosa, Wisconsin. We want you to spend more time with your friends and family and enjoy your weekends and time off at the Hank Aaron Trails without worrying about the HVAC system in your house.

With over 90 years of experience, we can ensure your systems work efficiently for comfortable temperatures at your home or business.

For HVAC services in Wauwatosa, look no further than The Thielmann Group.

Our Expert Heating Services

Wauwatosa winters are no joke, and the last thing you want is a heating system that can’t keep up. We are experts in the following heating services:

  • Fast, reliable heating repairs: A broken furnace or boiler can’t wait. Our technicians provide prompt service to restore heat to your home.
  • New heating system installations: If your heating system is outdated, we can install a high-efficiency option that improves comfort and lower energy costs.
  • Preventive heating maintenance: Regular checkups help prevent unexpected breakdowns, keep your system running smoothly and extend its life span.

Our furnace repair technicians are ready to promptly restore your heat. We know the urgency of “no heat” situations during Wisconsin winters. Our NATE-certified technicians can visit you 24/7 for HVAC emergencies — not including plumbing service — and can service and repair all system makes and models.

Air Conditioning Repairs, Maintenance & Installation for a Comfortable Wauwatosa Home

Summers in Wauwatosa can be relentless, but your home should always be a refreshing escape. Our air conditioning services help keep your space cool and comfortable when temperatures rise.

  • Air conditioner repair services: If your air conditioner is struggling, we’ll diagnose the issue and return it to peak performance.
  • New AC Installation: We install modern, energy-efficient air conditioning systems for better cooling and lower energy bills.
  • Routine AC maintenance: A well-maintained system runs more efficiently, prevents costly repairs, and lasts longer.

HVAC Repair Services in Wauwatosa, Wisconsin

Dependable Plumbing Services in Wauwatosa

Plumbing issues can be a major hassle, but we make fixing them easy. Our professional plumbing services cover everything from minor leaks to major installations.

  • Repairs and installations: From leaky faucets to new water heaters, we handle all your plumbing needs with expert care.
  • Water conditioning solutions: Improve your home’s water quality for better-tasting and cleaner water.
  • Sump pumps and pipe repairs: Prevent water damage and keep your plumbing system in top shape.
  • Hose bib services: We replace faulty hose bibs to prevent damage to your home’s foundation, including three common types — standard, ball valve and frost-free.

A Plan for Extra Peace of Mind

Want extra peace of mind? Our maintenance plan includes annual tuneups and a water quality analysis to help prevent costly surprises. You’ll also get priority scheduling, a 15% discount on repairs and expert maintenance scheduling handled for you.

Comprehensive Plumbing Services in Wauwatosa, WI

When your home’s plumbing stops working right, you need a team you can count on. Thielmann Heating, Cooling, and Plumbing delivers dependable plumbing services for homeowners across Wauwatosa with reliability and efficiency. Our team of licensed, insured plumbers handle everything from small leaks to complete home piping replacements, giving you peace of mind that your home’s plumbing systems are in good hands.

For over 95 years, our team has built a reputation for honest service and skilled workmanship. We respond quickly, assess the issue, and explain your repair or replacement options before any work begins. You get clear communication and long-lasting repairs every time.

Thielmann’s line of plumbing services include:

  • Water line repair and replacement for aging or damaged pipes.
  • Fixture repair and installation for faucets, toilets, and showers.
  • Drain cleaning and clog removal to restore proper flow.
  • Sump pump repair and replacement to protect your basement from flooding.
  • Water heater installation and repair, including tankless options.
  • Garbage disposal repair and installation.
  • Water conditioning systems to remove minerals and improve taste.

If you notice slow drains, low water pressure, or higher water bills, those are signs of a hidden problem. Our technicians use proven tools and methods to identify the cause and fix it fast.

Thielmann Heating, Cooling, and Plumbing is proud to serve Wauwatosa with reliable, professional plumbing services. Call (262) 299-6197 today to schedule an appointment and keep your home’s plumbing working reliably all year long.

Why Wauwatosa Chooses Thielmann Heating, Cooling & Plumbing

For nearly a century, homeowners in Wauwatosa have trusted us to keep their homes comfortable and running smoothly. Here’s why:

  • Licensed and insured: Your home is in expert hands.
  • Five-star service: We put our customers first and deliver top-notch workmanship.
  • Flexible financing: We can provide budget-friendly options through our financing partners.
  • Commitment to quality: Our team does the job right the first time.

HVAC Repair Services in Wauwatosa, Wisconsin

Comfort Starts Here

From chilly winter nights to sweltering summer afternoons, our expert team is here to help with reliable heating, cooling and plumbing solutions. Whether you need fast heating repairs, an air conditioning upgrade or trusted plumbing services, we’ve got you covered.

Call our technicians at (262) 384-6407 to book an appointment. A comfortable, worry-free home is just a call away.

Read Reviews by Our Customers

Recent Jobs and Reviews in Wauwatosa, WI

Job Locations and Reviews

Wauwatosa, WI - Performed comprehensive HVAC tune-up service including visual inspection of system components. Identified potential early-stage condensation issue on evaporator coil surface requiring monitoring. System currently operating within normal parameters with no immediate service concerns.
Todd H.
Todd H. Checked in
Performed comprehensive HVAC tune-up service including visual inspection of system components. Identified potential early-stage condensation issue on evaporator coil surface requiring monitoring. System currently operating within normal parameters with no immediate service concerns.
Wauwatosa, WI 53226
Performed routine tune-up on HVAC system, discovering significant corrosion on mounting bracket and interior components. Removed and replaced deteriorated bracket assembly showing rust damage at connection points, and cleaned accumulated rust stains and water damage from interior housing panel. System now operating within normal parameters after component replacement.
Performed routine tune-up on HVAC system, discovering significant corrosion on mounting bracket and interior components. Removed and replaced deteriorated bracket assembly showing rust damage at connection points, and cleaned accumulated rust stains and water damage from interior housing panel. System now operating within normal parameters after component replacement.
Ron B.
Ron B. Checked in
Performed routine tune-up on HVAC system, discovering significant corrosion on mounting bracket and interior components. Removed and replaced deteriorated bracket assembly showing rust damage at connection points, and cleaned accumulated rust stains and water damage from interior housing panel. System now operating within normal parameters after component replacement.
Wauwatosa, WI 53213
Performed combustion analysis on Lennox boiler system using Testo 310 II analyzer. Readings showed suboptimal efficiency at 67.9% with stack temperature of 216.2°F, oxygen at 18.5%, and CO2 at 1.38%. Documented existing installation configuration in mechanical room for reference.
Performed combustion analysis on Lennox boiler system using Testo 310 II analyzer. Readings showed suboptimal efficiency at 67.9% with stack temperature of 216.2°F, oxygen at 18.5%, and CO2 at 1.38%. Documented existing installation configuration in mechanical room for reference.
Ron B.
Ron B. Checked in
Performed combustion analysis on Lennox boiler system using Testo 310 II analyzer. Readings showed suboptimal efficiency at 67.9% with stack temperature of 216.2°F, oxygen at 18.5%, and CO2 at 1.38%. Documented existing installation configuration in mechanical room for reference.
Wauwatosa, WI 53213
Responded to no-heat call for a furnace under 10 years old. Diagnosed failed ignition sequence causing system lockout. Replaced dirty air filter which was restricting proper airflow and contributing to heat exchanger overheating. Reset system and verified proper operation through complete heating cycle.
Responded to no-heat call for a furnace under 10 years old. Diagnosed failed ignition sequence causing system lockout. Replaced dirty air filter which was restricting proper airflow and contributing to heat exchanger overheating. Reset system and verified proper operation through complete heating cycle.
Kevin C.
Kevin C. Checked in
Responded to no-heat call for a furnace under 10 years old. Diagnosed failed ignition sequence causing system lockout. Replaced dirty air filter which was restricting proper airflow and contributing to heat exchanger overheating. Reset system and verified proper operation through complete heating cycle.
Wauwatosa, WI 53213
Responded to no-heat call for residential gas furnace. Inspected system and identified faulty gas valve preventing proper ignition. Replaced defective valve assembly, reconnected all wiring harnesses according to manufacturer specifications, and verified proper gas flow. System now operating normally with consistent flame and appropriate heat output.
Responded to no-heat call for residential gas furnace. Inspected system and identified faulty gas valve preventing proper ignition. Replaced defective valve assembly, reconnected all wiring harnesses according to manufacturer specifications, and verified proper gas flow. System now operating normally with consistent flame and appropriate heat output.
Kevin P.
Kevin P. Checked in
Responded to no-heat call for residential gas furnace. Inspected system and identified faulty gas valve preventing proper ignition. Replaced defective valve assembly, reconnected all wiring harnesses according to manufacturer specifications, and verified proper gas flow. System now operating normally with consistent flame and appropriate heat output.
Wauwatosa, WI 53226
Responded to no heat call for residential system. Diagnosed issue with digital Honeywell thermostat showing 64°F indoor temperature despite 71°F heat setting. Verified furnace operation and ductwork integrity, confirming system was actively working to reach setpoint. Cleaned connections and confirmed proper thermostat function, restoring normal heating operation.
Responded to no heat call for residential system. Diagnosed issue with digital Honeywell thermostat showing 64°F indoor temperature despite 71°F heat setting. Verified furnace operation and ductwork integrity, confirming system was actively working to reach setpoint. Cleaned connections and confirmed proper thermostat function, restoring normal heating operation.
Makinze C
Makinze C Checked in
Responded to no heat call for residential system. Diagnosed issue with digital Honeywell thermostat showing 64°F indoor temperature despite 71°F heat setting. Verified furnace operation and ductwork integrity, confirming system was actively working to reach setpoint. Cleaned connections and confirmed proper thermostat function, restoring normal heating operation.
Wauwatosa, WI 53213
Conducted inspection of basement utility area to assess plumbing infrastructure connecting to HVAC system. Identified aging pipe joints with visible corrosion and mineral deposits at connection points between different pipe materials. Documented condition of support brackets and mounting hardware on ceiling installation for future reference.
Conducted inspection of basement utility area to assess plumbing infrastructure connecting to HVAC system. Identified aging pipe joints with visible corrosion and mineral deposits at connection points between different pipe materials. Documented condition of support brackets and mounting hardware on ceiling installation for future reference.
James P.
James P. Checked in
Conducted inspection of basement utility area to assess plumbing infrastructure connecting to HVAC system. Identified aging pipe joints with visible corrosion and mineral deposits at connection points between different pipe materials. Documented condition of support brackets and mounting hardware on ceiling installation for future reference.
Wauwatosa, WI 53213
Completed preventative maintenance service on Lennox HVAC furnace system. Inspected all components for proper operation, cleaned key parts, and verified system performance. Temperature readings at register showed 138.5°F, indicating proper heating function within normal parameters.
Completed preventative maintenance service on Lennox HVAC furnace system. Inspected all components for proper operation, cleaned key parts, and verified system performance. Temperature readings at register showed 138.5°F, indicating proper heating function within normal parameters.
Todd H.
Todd H. Checked in
Completed preventative maintenance service on Lennox HVAC furnace system. Inspected all components for proper operation, cleaned key parts, and verified system performance. Temperature readings at register showed 138.5°F, indicating proper heating function within normal parameters.
Wauwatosa, WI 53226
Performed warranty inspection of HVAC system in basement utility area. Examined ductwork, refrigerant lines, and drainage system. Verified proper installation of main air handler and associated piping. No current issues identified with the system operation or installation.
Performed warranty inspection of HVAC system in basement utility area. Examined ductwork, refrigerant lines, and drainage system. Verified proper installation of main air handler and associated piping. No current issues identified with the system operation or installation.
Josh V.
Josh V. Checked in
Performed warranty inspection of HVAC system in basement utility area. Examined ductwork, refrigerant lines, and drainage system. Verified proper installation of main air handler and associated piping. No current issues identified with the system operation or installation.
Wauwatosa, WI 53213
Wauwatosa, WI - Conducted scheduled preventative maintenance visit on HVAC system. Tested ambient temperature conditions with UEi digital meter, confirming normal operation at 75°F. All parameters within acceptable ranges; no issues detected requiring remediation.
Todd H.
Todd H. Checked in
Conducted scheduled preventative maintenance visit on HVAC system. Tested ambient temperature conditions with UEi digital meter, confirming normal operation at 75°F. All parameters within acceptable ranges; no issues detected requiring remediation.
Wauwatosa, WI 53226
Performed full inspection and combustion analysis on Lennox furnace system. Gas analyzer readings showed CO levels at 255 ppm and CO AF at 611 ppm, with combustion efficiency at 96.0%. System includes proper PVC exhaust/intake ventilation and additional air quality component installed alongside main furnace unit.
Performed full inspection and combustion analysis on Lennox furnace system. Gas analyzer readings showed CO levels at 255 ppm and CO AF at 611 ppm, with combustion efficiency at 96.0%. System includes proper PVC exhaust/intake ventilation and additional air quality component installed alongside main furnace unit.
Makinze C
Makinze C Checked in
Performed full inspection and combustion analysis on Lennox furnace system. Gas analyzer readings showed CO levels at 255 ppm and CO AF at 611 ppm, with combustion efficiency at 96.0%. System includes proper PVC exhaust/intake ventilation and additional air quality component installed alongside main furnace unit.
Wauwatosa, WI 53226
Performed combustion analysis on heating system using Testo 310 gas analyzer, documenting flue gas readings including stack temperature (293.2°F), oxygen (7.0%), CO (10 ppm), and efficiency (44.8%). Inspected burner assembly and verified proper flame characteristics with three blue flames visible through heat exchanger tubes, indicating normal operation after addressing the no heat complaint.
Performed combustion analysis on heating system using Testo 310 gas analyzer, documenting flue gas readings including stack temperature (293.2°F), oxygen (7.0%), CO (10 ppm), and efficiency (44.8%). Inspected burner assembly and verified proper flame characteristics with three blue flames visible through heat exchanger tubes, indicating normal operation after addressing the no heat complaint.
Makinze C
Makinze C Checked in
Performed combustion analysis on heating system using Testo 310 gas analyzer, documenting flue gas readings including stack temperature (293.2°F), oxygen (7.0%), CO (10 ppm), and efficiency (44.8%). Inspected burner assembly and verified proper flame characteristics with three blue flames visible through heat exchanger tubes, indicating normal operation after addressing the no heat complaint.
Wauwatosa, WI 53213
Performed visual assessment of existing HVAC system in basement utility area. Current unit is an aging beige/tan furnace with standard vertical design and connected ductwork. System evaluation indicates replacement is recommended with appropriately sized equipment to ensure optimal performance and efficiency for the home.
Performed visual assessment of existing HVAC system in basement utility area. Current unit is an aging beige/tan furnace with standard vertical design and connected ductwork. System evaluation indicates replacement is recommended with appropriately sized equipment to ensure optimal performance and efficiency for the home.
Jason G.
Jason G. Checked in
Performed visual assessment of existing HVAC system in basement utility area. Current unit is an aging beige/tan furnace with standard vertical design and connected ductwork. System evaluation indicates replacement is recommended with appropriately sized equipment to ensure optimal performance and efficiency for the home.
Wauwatosa, WI 53226
Performed routine maintenance on residential boiler system, which included inspection of heat exchanger, control panel functioning (confirmed 140°F operating temperature), and examination of all electrical components. Checked plumbing connections throughout the hydronic system, inspected expansion tank and water treatment equipment, and verified proper operation of pressure regulation valve. All components functioning within normal parameters.
Performed routine maintenance on residential boiler system, which included inspection of heat exchanger, control panel functioning (confirmed 140°F operating temperature), and examination of all electrical components. Checked plumbing connections throughout the hydronic system, inspected expansion tank and water treatment equipment, and verified proper operation of pressure regulation valve. All components functioning within normal parameters.
Kevin P.
Kevin P. Checked in
Performed routine maintenance on residential boiler system, which included inspection of heat exchanger, control panel functioning (confirmed 140°F operating temperature), and examination of all electrical components. Checked plumbing connections throughout the hydronic system, inspected expansion tank and water treatment equipment, and verified proper operation of pressure regulation valve. All components functioning within normal parameters.
Wauwatosa, WI 53213
Performed inspection and documentation of plumbing infrastructure in unfinished basement utility area. Examined copper piping system including valve connections and control components. Verified proper installation of water heater/tank and noted all visible plumbing runs through ceiling joists (copper and PVC) were in serviceable condition.
Performed inspection and documentation of plumbing infrastructure in unfinished basement utility area. Examined copper piping system including valve connections and control components. Verified proper installation of water heater/tank and noted all visible plumbing runs through ceiling joists (copper and PVC) were in serviceable condition.
Kevin P.
Kevin P. Checked in
Performed inspection and documentation of plumbing infrastructure in unfinished basement utility area. Examined copper piping system including valve connections and control components. Verified proper installation of water heater/tank and noted all visible plumbing runs through ceiling joists (copper and PVC) were in serviceable condition.
Wauwatosa, WI 53222
Conducted a comprehensive tune-up of the Payne furnace system in utility room. Inspected interior duct surfaces, noting light dust accumulation and minor corrosion on metal seams. Cleaned components, tested operation, and confirmed proper exhaust ventilation through PVC piping.
Conducted a comprehensive tune-up of the Payne furnace system in utility room. Inspected interior duct surfaces, noting light dust accumulation and minor corrosion on metal seams. Cleaned components, tested operation, and confirmed proper exhaust ventilation through PVC piping.
Makinze C
Makinze C Checked in
Conducted a comprehensive tune-up of the Payne furnace system in utility room. Inspected interior duct surfaces, noting light dust accumulation and minor corrosion on metal seams. Cleaned components, tested operation, and confirmed proper exhaust ventilation through PVC piping.
Wauwatosa, WI 53222
Conducted comprehensive assessment of aging residential HVAC system in basement utility room. Recommended full replacement of existing furnace unit showing warning indicators and visible wear. System inspection revealed outdated ductwork configuration that would benefit from redesign during replacement to improve airflow efficiency.
Conducted comprehensive assessment of aging residential HVAC system in basement utility room. Recommended full replacement of existing furnace unit showing warning indicators and visible wear. System inspection revealed outdated ductwork configuration that would benefit from redesign during replacement to improve airflow efficiency.
Dave V.
Dave V. Checked in
Conducted comprehensive assessment of aging residential HVAC system in basement utility room. Recommended full replacement of existing furnace unit showing warning indicators and visible wear. System inspection revealed outdated ductwork configuration that would benefit from redesign during replacement to improve airflow efficiency.
Wauwatosa, WI 53213
Wauwatosa, WI - Performed comprehensive HVAC tune-up including diagnostic testing with digital measurement equipment. System evaluation showed all parameters within normal operating ranges. No issues were identified during the inspection and service.
Todd H.
Todd H. Checked in
Performed comprehensive HVAC tune-up including diagnostic testing with digital measurement equipment. System evaluation showed all parameters within normal operating ranges. No issues were identified during the inspection and service.
Wauwatosa, WI 53213
Conducted a thorough assessment of the existing electrical panel and HVAC system for mini-split installation feasibility. Documented the panel's capacity and current breaker configuration to determine appropriate electrical requirements for the proposed mini-split system. Evaluated basement utility area for optimal condensate line routing and potential mounting locations for indoor air handler and outdoor condenser unit.
Conducted a thorough assessment of the existing electrical panel and HVAC system for mini-split installation feasibility. Documented the panel's capacity and current breaker configuration to determine appropriate electrical requirements for the proposed mini-split system. Evaluated basement utility area for optimal condensate line routing and potential mounting locations for indoor air handler and outdoor condenser unit.
Dave V.
Dave V. Checked in
Conducted a thorough assessment of the existing electrical panel and HVAC system for mini-split installation feasibility. Documented the panel's capacity and current breaker configuration to determine appropriate electrical requirements for the proposed mini-split system. Evaluated basement utility area for optimal condensate line routing and potential mounting locations for indoor air handler and outdoor condenser unit.
Wauwatosa, WI 53213
Wauwatosa, WI - Diagnosed and serviced 10+ year old HVAC system with no heat complaint. Inspection revealed failed ignition assembly preventing proper furnace operation. Replaced ignition module and cleaned flame sensor to restore proper heating function, then performed complete system test to verify normal operation.
Josh V.
Josh V. Checked in
Diagnosed and serviced 10+ year old HVAC system with no heat complaint. Inspection revealed failed ignition assembly preventing proper furnace operation. Replaced ignition module and cleaned flame sensor to restore proper heating function, then performed complete system test to verify normal operation.
Wauwatosa, WI 53213
Start Saving Today With

Membership Perks

Start Saving Today With

Membership Perks

What To Expect

Discover the Thielmann Heating, Cooling & Plumbing Difference

Fully Licensed & Insured

Our experts have the expertise and training to deliver the highest quality services every time.

Trusted Since 1929

We have served Southeastern Wisconsin for nearly a century, so we understand the needs of our community.

Financing Available

We offer various options from financing partners to help you meet your specific needs and budget.

5-Star Customer Service

Thielmann Heating, Cooling & Plumbing promises five-star customer service with every interaction.

Committed to Excellence

We complete jobs quickly without compromising our commitment to excellence.

Satisfaction Guarantee

Our team is dedicated to ensuring your 100% satisfaction with every service we perform.

Fully Licensed & Insured

Our experts have the expertise and training to deliver the highest quality services every time.

Trusted Since 1929

We have served Southeastern Wisconsin for nearly a century, so we understand the needs of our community.

Financing Available

We offer various options from financing partners to help you meet your specific needs and budget.

5-Star Customer Service

Thielmann Heating, Cooling & Plumbing promises five-star customer service with every interaction.

Committed to Excellence

We complete jobs quickly without compromising our commitment to excellence.

Satisfaction Guarantee

Our team is dedicated to ensuring your 100% satisfaction with every service we perform.

Review Image
Our Reviews

See What Your Neighbors Are Saying

I liked my experience with them. The guys I spoke with prior to doing the work, the estimation phase , and the ones I spoke with after the work was completed had enough knowledge and suggestion to answer all my questions. I’m pleased with the job…

De'Angelo T.

De'Angelo T.

Excellent team from start to finish. They were all very respectful of our property, as they promptly and professionally went about their task of installing a new air conditioner system. The system works very well, so far. It is also much quieter than the previous 40+…

Jerry W.

Jerry W.

Thielmann did a tremendous job replacing our Carrier furnace. They worked with us to make sure we were able to get the right product and even worked with Carrier on the issues we were seeing on our old furnace as it was failing sooner than it…

J. K.

J. K.

I've been using Thielmann Group for all my heating and air conditioning since I built my house 23 years ago. They have been great in emergency service and regular maintenance service. On time and very friendly staff. Would, and have, recommend them to anyone!

Paul K.

Paul K.

I have used Thielmann for both installation of a new furnace + A/C recently, but also an install of a ductless mini-split unit six years ago. I fully trust their brands and recommendations. I can't say enough of about this company. Every single person from administrative…

Christin C.

Christin C.